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PDL BioPharma Inc.

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FY2007 Annual Report · PDL BioPharma Inc.
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PDL BIOPHARMA, INC.

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1400 Seaport Blvd.
Redwood City, CA 94063
Tel:  650-454-1000
Fax:  650-454-2000
www.pdl.com

A N N U A L   R E P O R T

 
 
 
 
 
 
 
 
 
 
Our antibody humanization technology has 
made possible nine life–changing medicines.  
We’re currently focused on leveraging our 
core expertise to discover and develop a new 
stream of innovative antibody products tar-
geting oncology and immunologic diseases, 
while we work to optimize the value of our 
successful antibody humanization royalties.

MANAGEMENT 

L. Patrick Gage, Ph.D.
Interim Chief Executive Officer

Richard Murray, Ph.D.
Executive Vice President and
Chief Scientific Officer

Andrew Guggenhime
Senior Vice President and
Chief Financial Officer

Mark McCamish, M.D., Ph.D.
Senior Vice President and
Chief Medical Officer

Jaisim Shah
Senior Vice President, Marketing  
and Business Affairs

Francis Sarena
Executive Director, 
Chief Legal Officer and Secretary

BOARD OF DIRECTORS

Karen A. Dawes
L. Patrick Gage, Ph.D.
Brad S. Goodwin
Joseph Klein III 
Laurence Jay Korn, Ph.D.
Richard Murray, Ph.D.
Jon S. Saxe, Esq.

CORPORATE INFORMATION

Corporate Headquarters
1400 Seaport Blvd.
Redwood City, CA 94063
Tel:   650-454-1000
Fax:  650-454-2000
www.pdl.com

Transfer Agent and Registrar
BNY Mellon Shareowner Services
P. O. Box 358015
Pittsburgh, PA 15252-8015
or
480 Washington Blvd.
Jersey City, NJ 07310-1900
Tel:  800-522-6645 (US)

201-680-6578 (outside US)

TDD for hearing impaired: 
800-231-5469 (US)
201-680-6610 (outside US)
www.bnymellon.com/shareowner/isd

Independent Auditors
Ernst & Young LLP
Palo Alto, CA 

Corporate Counsel
DLA Piper US LLP
San Francisco, CA

Annual Meeting
2008 Annual Meeting of Stockholders will 
be held on May 28, 2008 at 9 a.m. at PDL 
BioPharma, 1400 Seaport Blvd., Redwood 
City, CA 94063

CORPORATE GOVERNANCE 
DOCUMENTS

PDL’s corporate governance guidelines,  
annual report, SEC filings, and code of  
conduct for directors, officers (including 
our principal executive officer, principal 
financial officer and principal accounting 
officer) and employees can be obtained 
free on our website at www.pdl.com. 

Additionally, stockholders may receive 
copies upon request to:

Corporate and Investor Relations
PDL BioPharma, Inc.
1400 Seaport Blvd.
Redwood City, CA 94063
Tel:   650-454-1508
Fax:  650-454-2000

Stock Listing
Our common stock trades on the NASDAQ 
Global Select Market under the symbol 
“PDLI.”  We had never declared any cash 
dividends on our capital stock prior to 
March 2008, when we declared a $4.25  
per share of common stock dividend.   

We also announced in March 2008 that we 
plan to spin off our biotechnology related 
assets, which we intend to complete by 
the end of 2008, and that thereafter we 
plan to distribute future antibody human-
ization royalty revenues, net of any operat-
ing expenses, debt service and income 
taxes, to our stockholders.

Price Range of Common Stock
As of March 31, 2008, we had approxi-
mately 242 common stockholders of 
record. Because brokers and other 
institutions hold many of these shares on 
behalf of stockholders, we are unable to 
estimate the total number of stockhold-
ers represented by the record holders, but 
we believe that they are well in excess of 
record holders. The following table sets 
forth the quarterly high and low bid prices 
for a share of PDL common stock for the 
fiscal years ended December 31, 2006 and 
2007, as reported by the NASDAQ Global 
Select Market. 

2006 

Q1 
Q2 
Q3 
Q4 

2007 

Q1 
Q2 
Q3 
Q4 

High 

$ 33.30 
$ 32.97 
$ 19.95 
$ 23.29 

High 

$ 21.69 
$ 27.46 
$ 24.16 
$ 21.31 

Low

$ 27.15
$ 16.79
$ 16.39
$ 18.70

Low

$ 18.78
$ 23.02
$ 20.23
$ 17.72

Design: Helene Sherlock     l    Photograph: Kingmond Young

 
 
 
 
LETTER TO OUR STOCKHOLDERS
May 2008

The past year has been one of tremendous change for PDL BioPharma, marked by a series of events that, 

by the end of 2008, should result in two separate public companies: a streamlined antibody–focused bio-

technology organization that we plan to spin-off  from PDL BioPharma, and the current company, which 

will administer the successful antibody humanization royalties. We believe these two separate companies 

would enable investors to realize the full value of each of PDL BioPharma’s current assets.  

Our decisions and actions in 2007 were aimed at optimizing the value of each of our core assets. First, 

we recognized the need for our Board of Directors and management to undertake a thorough strategic 

review process.  As a result, we fi rst concluded that our commercial products were no longer a strategic 

fi t for the company, and we began a process to sell these assets.  We subsequently decided also to seek 

buyers for the company as a whole or for our other individual assets – a decision we felt could deliver 

additional value for our stockholders. 

By the end of 2007, we were pleased to announce an agreement to sell our oncology product, IV Busulfex, 

to Otsuka Pharmaceuticals.  In early 2008, we then announced an agreement to sell our commercial and 

cardiovascular assets, consisting of product rights to Cardene, Retavase and ularitide, to EKR Therapeutics.  

Shortly thereafter, we entered into an agreement to sell our large–scale manufacturing facility to  

Genmab.  We determined that each transaction refl ected the value of the particular asset and provided 

the best return for our stockholders in light of other alternatives.  In total, these three transactions pro-

vided initial proceeds of over $500 million in cash, which we subsequently announced would be returned 

to stockholders through a special cash dividend.  In March 2008, we ended the formal sale process for the 

company and announced a restructuring to focus on our core expertise in antibody discovery and  

development. 

As we then assessed our remaining core assets – our biotechnology operations and our royalty stream  

 – we determined that separating them would best enable our stockholders to realize their values fully 

and independently.  To achieve this separation, in April 2008, we announced our intent to spin off  the bio-

technology component of our business from our antibody humanization royalty stream.  This transaction 

is anticipated to occur by the end of 2008.

Following the spin-off  of the biotechnology operations, PDL BioPharma would retain rights to the an-

tibody humanization royalty revenues from all current and future licensed products.  These include the 

products on which PDL currently generates royalties, which totaled $221 million in revenues for the full 

year of 2007. We look forward to additional potential royalties from one recently approved product and 

another in registration, and there are many more in various stages of development that could contribute 

to growth of this royalty stream prior to the expiration of our humanization patents in 2014.

In parallel to the spin–off  process, we are pursuing eff orts to sell or otherwise monetize some or all of the 

value of the antibody humanization royalties, and we believe our plan to separate them from our biotech-

nology assets enhances our ability to eff ect such a transaction. Subsequent to the spin–off , PDL intends 

to distribute future royalty revenues, net of any operating expenses, debt service and income taxes, to 

stockholders.

As a separate public company, our streamlined biotechnology operations would continue to focus on the 

discovery and development of innovative antibodies in the areas of oncology and immunology.  We will 

apply our experience and knowledge in novel target identifi cation and antibody engineering to create 

new therapies, extending our current pipeline of promising antibody product candidates. 

We are also excited about leveraging our core antibody technologies with breakthrough protein engi-

neering approaches to optimize antibody therapeutics.  Such capabilities form the backbone for our 

biotechnology operations and suggest a stream of antibody candidates for our development pipeline 

going forward.

Of course, the more visible area of value creation for the new company in the near term will be advance-

ment of our clinical candidates, led by daclizumab in multiple sclerosis (MS) and other immunologic dis-

eases such as asthma.  Results from PDL-designed and -executed placebo-controlled phase 2 clinical trials 

of daclizumab in MS and in asthma met their primary endpoints, and we are advancing this promising 

antibody in both areas of signifi cant unmet need.  We are pleased to continue to work on the MS program 

with Biogen Idec, the leader in this therapeutic fi eld. We also continue to work with them on volociximab, 

our antibody currently being tested in ovarian and lung cancers. 

Two additional innovative antibodies from our discovery research are in earlier stages of development. 

HuLuc63 is in phase 1 evaluation for multiple myeloma, and during 2008, we plan to extend the program 

with combination therapy trials and fully explore the antibody’s potential in other disease areas. PDL192 

is another exciting “fi rst-in-class” antibody that we plan to advance into clinical development in 2008.  

PDL192 has demonstrated compelling activity in preclinical solid tumor models, the data for which were 

fi rst presented to the scientifi c community in the spring of 2008, and we look forward to moving this 

important program ahead in the coming years.  

Now that we’ve set our strategic course, our focus turns to the implementation of a timely and smooth 

spin-off  transaction.  A key objective is to determine the leadership, including new CEOs for PDL and for 

the biotechnology company post-separation.  As our planning continues during the year, we intend to 

update you with additional details regarding the structure, leadership, and fi nancial operations of both 

companies.

We would like to close with our sincere thanks to our stockholders, employees, and partners without 

whose support we would not be able to move forward successfully on our stated path.

Sincerely,

Karen A. Dawes  

Chair of the Board Offi  cer 

L. Patrick Gage, Ph.D.

Interim Chief Executive Offi  cer

 
 
 
 
 
 
 
 
 
Pre-Clinical    Phase 1     Phase 1-2    Phase 2

PIPELINE PORTFOLIO

Immunology

Daclizumab

Multiple Sclerosis*
Severe Asthma

PDL241

Immunologic diseases

PDL252

Immunologic diseases

Oncology

Volociximab

Ovarian*
Lung*

HuLuc63

PDL192

Multiple Myeloma (monotherapy)
Multiple Myeloma (combination)

Solid Tumors 
(IND planned for Q2 2008)

*Partnered with Biogen Idec

ROYALTY GROWTH
(dollars in millions)

2003 

  2004 

   2005 

     2006 

       2007*

$221.1

$184.3

$130.1

$83.8

$52.7

*2007 royalty revenues included sales of the following licensed antibody products:   Avastin®, Herceptin®, 
Xolair®, Raptiva® and Lucentis® from Genentech; Synagis® from MedImmune;  Mylotarg® from Wyeth; and 
Tysabri® from Elan.

 
UNITED STATES
SECURITIES AND EXCHANGE  COMMISSION
Washington, D.C. 20549

FORM  10-K

(cid:1) ANNUAL  REPORT PURSUANT  TO  SECTION 13  OR  15(d)  OF  THE

SECURITIES EXCHANGE ACT OF  1934

FOR THE FISCAL YEAR ENDED DECEMBER  31, 2007

OR

(cid:2) TRANSITION REPORT PURSUANT  TO  SECTION 13  OR  15(d)  OF  THE

SECURITIES EXCHANGE ACT OF  1934

For the transition period from 

 to 

Commission File Number: 000-19756

12MAR200801535450

PDL BioPharma,  Inc.
(Exact name of registrant as specified in its charter)

Delaware
(State  or other jurisdiction of incorporation or organization)

94-3023969
(I.R.S.  Employer  Identification  No.)

1400 Seaport Boulevard
Redwood City, CA 94063
(Address of principal executive offices)

Registrant’s telephone number, including  area code
(650) 454-1000

Securities registered pursuant to Section 12(b) of  the Act:  None

Securities registered pursuant to Section 12(g) of the Act:
Common Stock, par value $0.01 per share
Preferred Stock Purchase Rights, no par value
(Title of Class)

Indicate  by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes (cid:1) No  (cid:2)

Indicate  by check mark if the registrant is not required to file reports  pursuant to Section 13 or Section 15(d) of the Act. Yes (cid:2) No  (cid:1)

Indicate  by check mark whether the registrant (1) has filed all  reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for  such shorter period that the registrant was required to file such reports),
and (2) has been  subject to such filing requirements for the past 90  days. Yes (cid:1) No (cid:2)

Indicate  by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will  not  be
contained,  to the best of registrant’s knowledge, in definitive  proxy or information statements incorporated by reference in Part III of
this Form  10-K or any amendment to this Form 10-K. (cid:2)

Indicate  by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition
of ‘‘accelerated filer and large accelerated filer’’ in Rule 12b-2 of the Exchange Act (Check one):

Large accelerated filer (cid:1)

Accelerated filer (cid:2)

Non-accelerated filer (cid:2)
(Do not check if a
smaller reporting
company)

Smaller reporting company (cid:2)

Indicate  by check mark whether the registrant is a shell company (as  defined in  Rule 12b-2 of  the  Act).  Yes (cid:2) No (cid:1)

The  aggregate  market value of shares of common stock held by non-affiliates of the registrant, based upon the closing sale price of  a
share of common stock on June 29, 2007, as reported on the NASDAQ National Market System, was $2,265,076,181.

As of February 21, 2008, the registrant had outstanding 117,668,198 shares of common stock.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the  registrant’s proxy statement to be delivered to stockholders with respect to the registrant’s 2008 Annual Meeting of
Stockholders  to be filed by the registrant with the U.S. Securities and  Exchange Commission (hereinafter referred to as the ‘‘Proxy
Statement’’)  are incorporated by reference into Part III of this  Annual  Report on Form 10-K. The registrant intends to file its proxy
statement within 120 days after its fiscal year end.

Forward-looking Statements

PART I

This  Annual Report contains ‘‘forward-looking statements’’ within the meaning  of  Section 27A of the

Securities Act of 1933, as amended, and  Section 21E of  the Securities and  Exchange Act of  1934, as
amended. All statements other than statements of historical facts are ‘‘forward-looking  statements’’ for
purposes of these provisions, including  any  projections of  earnings, revenues or other financial items,  any
statements of the plans and objectives of  management for future operations, including any statements
concerning proposed new products or licensing or collaborative arrangements, any statements regarding
future economic conditions or performance, and any statement of  assumptions  underlying any of the
foregoing. In some cases, forward-looking  statements  can be  identified  by the use of  terminology such as
‘‘may,’’ ‘‘will,’’ ‘‘expects,’’ ‘‘plans,’’ ‘‘anticipates,’’  ‘‘estimates,’’  ‘‘potential,’’  or ‘‘continue’’ or  the negative
thereof or other comparable terminology. Although we  believe that the expectations reflected in the forward-
looking statements contained herein are reasonable, there can  be no assurance that such expectations or  any
of the forward-looking statements will prove  to be correct, and  actual results  could differ materially  from
those projected or assumed in the forward-looking statements. Our future financial condition and  results of
operations, as well as any forward-looking  statements, are subject to  inherent  risks  and uncertainties,
including but not limited to the risk factors  set forth  below, and for  the  reasons described  elsewhere in this
Annual Report. All forward-looking statements  and reasons why results may  differ included in this Annual
Report are made as of the date hereof, and we assume no obligation  to update these forward-looking
statements or reasons why actual results  might  differ.

As used in this Annual Report, the terms ‘‘we,’’ ‘‘us,’’ ‘‘our,’’ the ‘‘Company’’  and ‘‘PDL’’  mean

PDL BioPharma, Inc. and its subsidiaries  (unless the context indicates  a different meaning).

We  own or have rights to numerous trademarks,  trade names, copyrights and other intellectual
property used in our business, including PDL BioPharma,  the PDL logo, RESTORE(cid:3) and HuZAF(cid:3),
each  of which is considered a trademark, and Nuvion(cid:5). All other company names, tradenames and
trademarks included in this Annual Report are  trademarks, registered trademarks or trade names  of
their respective owners.

ITEM 1. BUSINESS

OVERVIEW

We  are a biopharmaceutical company  focused on the discovery and development of novel
antibodies in oncology and immunologic  diseases.  We receive royalties and other  revenues through
licensing agreements with numerous  biotechnology and pharmaceutical companies  based on  our
proprietary antibody humanization technology  platform. These licensing agreements have contributed to
the development by our licensees of nine  marketed  products. We  currently have several  investigational
compounds in clinical development for severe  or life-threatening diseases, two of which  we are
developing in collaboration with Biogen Idec MA,  Inc. (Biogen  Idec).  We began marketing and selling
acute-care products in the hospital setting in the United States  and Canada  in March 2005; however, in
August 2007, we began the process of  divesting each of  our commercial  products and had completely
divested these assets as of March 7, 2008.

Our aim is to discover and develop antibody products. Our  goal is to submit to the  FDA, on
average, one investigational new antibody-based drug application (IND) per  calendar  year  and augment
this  pipeline generation through additional in-licensing at various stages of development. Our internal
research and development efforts are focused on novel antibodies for the treatment  of cancer and
immunologic diseases. Certain of our products  in development address  indications  that  require specific
expertise or large development and marketing efforts, such as multiple  sclerosis (MS), respiratory

2

diseases  and some oncology indications, and our  strategy for those products is to seek appropriate
partners with global development, manufacturing and  commercialization capabilities.

On August 28, 2007, in connection with a months-long  evaluation of strategic alternatives that our

management and Board of Directors  conducted, we  announced our intent to sell  our commercial  and
cardiovascular assets, which were comprised of the Cardene(cid:5), Retavase(cid:5) and IV Busulfex(cid:5) commercial
products and the ularitide development-stage cardiovascular product (together, the  Commercial and
Cardiovascular Assets). The decision  to  pursue  a sale of these assets was related to a significant
strategic change to focus the Company  on the discovery and  development of novel antibodies in
oncology and immunologic diseases.  Given  the change in our  strategic direction and the current  timing
of our pipeline products, we determined that  our  commercial products  and cardiovascular development
programs, which are not antibody-based products, were no longer a strategic fit.

We  subsequently announced on October  1, 2007 that we would seek  the sale  of  our  entire
Company or of our key assets, which  decision  was  in connection  with our ongoing evaluation of
strategic alternatives and our objective  to  maximize stockholder  value.

Related to the sale of the Commercial and Cardiovascular  Assets, in December 2007,  we entered
into a definitive agreement with Otsuka Pharmaceutical  Co., Ltd. (Otsuka) for the sale of IV Busulfex
product-related assets for $200 million  in  cash. In  February 2008, we entered into a definitive
agreement for the sale of  Cardene, Retavase and ularitide product-related assets (the Cardiovascular
Assets) to EKR Therapeutics, Inc. (EKR) for an upfront payment of $85 million,  up to $85  million in
development and sales milestone payments,  as well as  royalties on certain future  product sales. On
March 7, 2008, we closed the sales of  both transactions.

Also in February 2008, we entered into an  asset purchase agreement for the  sale of our Minnesota
manufacturing facility and related operations  to  GMN, Inc.,  a wholly owned subsidiary of Genmab A/S
(Genmab), for total cash proceeds of $240  million. Under the terms  of this agreement, Genmab  would
acquire our manufacturing and related  administrative facilities in Brooklyn Park, Minnesota, and all
assets therein, as well as certain of our lease obligations related to our facilities in  Plymouth,
Minnesota (together, the Manufacturing Assets). In addition, Genmab plans to retain the
approximately 170 employees currently  working at  the manufacturing facility. In connection with this
transaction, Genmab would produce  clinical material to supply certain of  our pipeline products for  our
investigational studies under a clinical  supply agreement. We expect to close this transaction during  the
first quarter of 2008.

In March 2008, we announced that we had ended the  sale process for the Company  or our
biotechnology discovery and development assets  and  that we would  focus on  the discovery  and
development of innovative new antibodies  for cancer and immunologic diseases. While we had  actively
pursued  a sale of the entire Company  or  our key assets since  we  announced our intent to do  so in
October 2007, we had not received any firm offers for the Company as  a whole or for our
biotechnology assets.

We  also announced in March 2008 that we intend  to  distribute to our stockholders at least
$500 million of the initial proceeds from the sale of the Commercial and  Cardiovascular  Assets and
Manufacturing  Assets,  pending  the  close  of  all  of  the  transactions,  in  a  form  and  at  a  time  to  be
determined. In addition, we announced that we  are actively evaluating several alternative structures that
would, if completed, result in the distribution to our stockholders of 50%  or more of the value of
future antibody humanization royalties that  would be received from currently marketed products,  net of
any applicable corporate-level taxes. We  are carefully  evaluating  numerous factors, including  tax
implications, structural considerations,  and market conditions, in  order to  select the alternative that
would maximize the value of the humanization royalties for our stockholders. The structures being
evaluated include, among others, a sale  of the  right to receive  future royalties, a securitization of future
royalties or a distribution to stockholders  of securities related  to  the royalty stream.

3

In an effort to reduce operating costs  to a level more consistent  with a biotechnology company

focused solely on antibody discovery and  development, in March  2008 we  commenced  a restructuring
effort pursuant to which we intend to  eliminate approximately 250 employment positions over
approximately one year and undertake other  substantial cost  cutting measures. This reduction is in
addition  to  previously  planned  reductions  of  approximately  335  positions  resulting  from  the  sales  of  the
Commercial and Cardiovascular Assets and Manufacturing Assets.  Subsequent to the transition period,
we expect that our workforce will consist  of  approximately  300 employees. We anticipate a transition
period of approximately 12 months before planned expense reductions and transition services related to
the Commercial and Cardiovascular  Assets  and Manufacturing Assets sale transactions  are fully
implemented or completed. We have offered retention bonuses and  other incentives to the transition
employees, as well as to the employees that we  expect to retain after the restructuring, to encourage
these employees to stay with the Company.  In connection with  this  restructuring  effort, we expect to
incur significant transition-related expenses over  the next 12-month period, a portion of which would be
recorded  as restructuring charges.

We  were organized as a Delaware corporation in 1986  under the name  Protein Design Labs, Inc.

In 2006, we changed our name to PDL BioPharma, Inc.

OUR PRODUCTS IN DEVELOPMENT

We  have several investigational antibody-based compounds in  clinical  development  for cancer  and

immunologic diseases, two of which we  are developing in  collaboration with Biogen Idec.  The table
below lists various investigational compounds for which we are pursuing clinical  development activities
either on our own or in collaboration.  Not all clinical trials  for each  product candidate  are listed below.
The development and commercialization of  our product candidates are subject to numerous risks  and
uncertainties, as noted in our ‘‘Risk Factors’’ of Part I, Item 1A of this  Annual  Report.

Product Candidate

Indication/Description

Program Status

Daclizumab . . . . . . . . . . . . . . . . . . . Asthma

Multiple sclerosis

Transplant

maintenance

Volociximab (M200) . . . . . . . . . . . . . Solid tumors

HuLuc63 . . . . . . . . . . . . . . . . . . . . Multiple myeloma
PDL192 . . . . . . . . . . . . . . . . . . . . . Solid tumors

Phase  2b program  being  planned
Phase 2  program  ongoing  in
partnership
Phase  2 program being  evaluated

Phase 2 program ongoing in
partnership
Phase 1  program  ongoing
Pre-IND

Nuvion(cid:5) (visilizumab) . . . . . . . . . . . .
Cardene (nicardipine hydrochloride) . . . Acute hypertension Marketed product,  sold  to  EKR

ulcerative colitis

IV steroid-refractory Program  terminated  in August 2007

Collaborator

—
Biogen  Idec

—

Biogen Idec

—
—
—

—

Daclizumab. Daclizumab is a humanized monoclonal antibody that binds  to  the alpha chain
(CD25) of the interleukin-2 (IL-2) receptor on activated T cells, which  are white blood cells  that  play a
role in inflammatory and immune-mediated processes in the  body. Daclizumab is the  active  component
of  the  approved  drug  marketed  worldwide  by  Hoffmann  La-Roche  (Roche)  as Zenapax, which is
indicated for the prevention of acute organ  transplant rejection following transplant surgery.

We  and our partner, Biogen Idec, are currently testing daclizumab in a phase 2 study  in patients

with multiple sclerosis. In March 2007,  we and Biogen Idec  announced  that the CHOICE trial, a
phase 2, randomized, double-blind, placebo-controlled  trial of daclizumab,  met its primary endpoint in
relapsing MS patients being treated with  interferon beta.  In October 2007,  we presented the phase 2
CHOICE data that demonstrated daclizumab 2 mg/kg administered every  two weeks as  a subcutaneous
injection added to interferon beta therapy significantly reduced new or enlarged gadolinium-enhancing
lesions at week 24 compared to interferon beta  therapy alone, in  patients with active relapsing multiple

4

sclerosis. Patients from this trial were followed for an  additional 48 weeks  after the treatment  period to
further assess safety and efficacy. We,  together with Biogen Idec,  initiated in the first quarter of 2008  a
phase 2 monotherapy trial of daclizumab,  the  SELECT trial, to advance  the overall  clinical
development program in relapsing MS.

In addition, we are independently pursuing development  of daclizumab for treatment of moderate

to severe asthma and intend to initiate  a  phase 2 trial during  2008. We  also continue  to  evaluate
daclizumab for transplant maintenance,  including potential partnership opportunities.

Volociximab (M200). Volociximab is a chimeric monoclonal antibody that inhibits  the functional
activity  of a5ß1 integrin, a protein found  on activated endothelial cells.  Blocking the activity  of  a5ß1
integrin has been found to prevent angiogenesis,  which is the formation of new blood vessels  that  feed
tumors and allow them to grow and metastasize.

We and our partner, Biogen Idec, are currently investigating  volociximab in various phase 2,
open-label clinical trials in patients with advanced solid tumors.  This  includes two  phase 2 clinical trials
in ovarian cancer, initiated in August 2007,  and two phase  1 trials in  non-small cell lung cancer
(NSCLC), which were initiated during the  last quarter of 2007  and the first quarter of 2008.

HuLuc63. HuLuc63 is a humanized monoclonal antibody that binds to CS1, a cell surface
glycoprotein that is highly expressed on myeloma cells  but minimally expressed on normal cells.
HuLuc63 may induce anti-tumor effects through antibody-dependent cellular cytotoxicity  activity on
myeloma cells. The phase 1 trial of HuLuc63  in patients with advanced multiple  myeloma is ongoing.
We  anticipate initiating phase 1 combination trials of HuLuc63 in the second half of  2008.

PDL192. PDL192 is a novel humanized monoclonal antibody  in preclinical  development. We
intend to file an IND in 2008, upon successful completion of certain remaining  preclinical studies,  for
PDL 192 in solid tumor applications.

Nuvion (visilizumab). Our Nuvion antibody is a humanized monoclonal  antibody that  binds  to
CD3, a protein found on the outer membrane of T  cells. T cells are white blood cells  that  play  a role
in inflammatory and immune-mediated  processes in  the body.  We hold all worldwide rights to the
development, manufacturing and sales of  the Nuvion antibody.

The Nuvion antibody was, until August 2007, being tested in a  registrational program in patients

with intravenous steroid-refractory ulcerative colitis  (IVSR-UC).  On August 24,  2007, following a
routine Data Management Committee (DMC) evaluation of data  from  121 patients from  the
RESTORE 1 trial, the DMC recommended to us that we terminate the RESTORE 1 study  due  to
insufficient efficacy and an inferior safety  profile in the Nuvion arm compared to IV steroids alone. We
then promptly reviewed unblinded data  from the  RESTORE 1  trial and concurred with the  DMC’s
recommendation. On August 28, 2007,  we  announced our termination of  the Nuvion phase 3
development program in IVSR-UC. We have no current plans for the continued development of
Nuvion in any indications, however, the pharmacodymamic  effects of this molecule are well  understood
and other indications as well as potential partnerships are being considered.

Cardene.

In March 2008, we closed the sale of the Cardiovascular Assets, which included  Cardene,

to EKR. In February 2008, we terminated  the then-ongoing pediatric  study, the purpose  of which was
to extend marketing exclusivity for six months following the  November 2009  expiration of the
underlying patent. However, we continue to perform  development work  for  new formulations  and
presentations of Cardene pursuant to  an agreement with EKR.  We expect to continue  to  provide these
services to EKR through the end of  2008, the costs of which  EKR will  reimburse under the terms of
our  agreement. All operating expenses  incurred in 2007 relating  to  the development of Cardene have
been included in discontinued operations in the Consolidated Statements of Operations  for all periods
presented.

5

For a  discussion of the risks and uncertainties  associated with the  timing of completing a product

development phase, see the ‘‘If our research  and development  efforts are  not  successful, we may not be
able to effectively develop new products,’’  ‘‘The clinical development of drug  products is inherently
uncertain and expensive and subject  to  extensive  government regulation,’’ ‘‘We must comply with
extensive government regulation,’’ ‘‘We may  be  unable to enroll a sufficient number of patients in  a
timely manner in order to complete  our clinical trials,’’ ‘‘We must  attract and retain key employees in
order to succeed,’’ ‘‘We have ended our  solicitation  of  interest  in the Company and  its assets, other
than  our  humanization  royalty  stream  assets,  and  undertaken  to  restructure  the  Company,  which  could
distract our management and employees, disrupt operations, make  more difficult our ability to attract
and retain key employees and cause  other  difficulties,’’ ‘‘The process of  pursuing and implementing
multiple significant transactions and  transaction structures simultaneously  diverts  the attention of our
management and employees, increases our professional services expenses  and may  disrupt  our
operations,’’ ‘‘We have a history of operating losses and may not achieve  sustained profitability,’’ ‘‘We
face significant competition,’’ ‘‘Changes in the U.S. and international health care industry,  including
regarding reimbursement rates, could adversely  affect the  commercial value of our development
products,’’ ‘‘We must protect our patent  and other intellectual  property  rights to succeed,’’  ‘‘If our
collaborations are not successful or are terminated  by  our partners,  we may not effectively develop and
market some of our products,’’ ‘‘The failure to gain market acceptance of our product candidates
among the medical community would  adversely affect  our  revenue,’’ ‘‘The ‘‘fast track’’ designation for
development of any of our products  may not lead to a faster  development or regulatory review or
approval process and it does not increase  the likelihood the  product will receive regulatory approval,’’
‘‘Failure to achieve revenue targets or raise additional funds  in the future may require  us  to  reduce the
scope of or eliminate one or more of our  planned activities,’’ ‘‘We  may  be unable to obtain or maintain
regulatory approval for our products’’  sections of our Risk Factors.

OUR ANTIBODY RESEARCH AND PRECLINICAL DEVELOPMENT

Our proprietary antibody humanization  technology has  positioned us as  a leader in  the

development of therapeutic antibodies that  overcome many of the problems associated with mouse
antibodies. Although mouse monoclonal  antibodies  are relatively easy to generate, they can  have
significant drawbacks as therapeutics, including a short half life that  requires  frequent administration
and the high likelihood that a mouse  antibody will be recognized by  the body’s immune system as
foreign. The immune system therefore responds with a human  anti-mouse antibody, or HAMA,
response, which rapidly neutralizes the  mouse antibody and renders it ineffective for further therapy.

Using our patented approach, ‘‘humanized’’ antibodies are designed to retain biological activity of

mouse antibodies while incorporating  human-like traits, which  enhance the  utility of such antibodies  for
human therapeutic use. Clinical trials and  preclinical studies  have shown  that  our  humanized  antibodies
have the desired human-like antibody characteristics,  low immunogenicity and  a usefully long half-life,
coupled with  the important target binding  activity of a  mouse-derived antibody.  Our researchers  are
continuously searching for new technologies and approaches  to  build upon our strong  antibody
know-how.

Building upon our antibody humanization platform, our research efforts are now focused on

discovering and developing humanized antibodies  for  the treatment of cancer and  immunologic
diseases.  We have significant research activities aimed  at the  discovery of new antibodies and utilize
various state-of-the-art research tools intended  to  optimize  the efficiency of  antibodies that may be
useful for the treatment of certain diseases. These activities  are intended to provide antibody product
candidates for further preclinical and clinical  development in our  core  disease areas. We use a variety
of sophisticated methods to discover  our antibody targets. We also have in-licensed targets  or
antibodies, through collaborative research  agreements, from academic institutions or other

6

biotechnology or pharmaceutical companies and expect  to  in-license additional  rights in the  future in
order to develop additional antibody-based products.

We  validate targets that result from our own  discovery efforts, our  collaborations and  in-licensing,
by evaluating antibodies against these targets in a number of  different in vitro and in vivo assays. Our
validation activities help determine which  antibodies have sufficiently potent biological activities for  us
to humanize them using our proprietary technology and subsequently enter them  into  preclinical testing
and clinical development.

We  conduct additional research activities intended to improve the general characteristics of

antibodies that are used as human therapeutics. As examples, we are examining factors which influence
the interaction of antibodies with other  components of the  human immune system and  factors which
influence the duration of circulation  of  antibodies in humans, with the aim of engineering antibodies
with even more favorable biological characteristics.

Based on our proprietary and focused antibody discovery capabilities,  we  are evaluating a number

of additional therapeutic antibody candidates, at  earlier stages of development, focused on the
treatment of cancer and immunologic  diseases. We  have several humanized antibody candidates in
earlier research stages, the most-advanced  of which could enter clinical  studies over the next several
years if ongoing preclinical development  is successful.

Research and development expenses were $204.2  million  in 2007, $209.3  million  in 2006 and

$156.0 million in 2005. We expect our  research  and  development expenses to decrease significantly
from recent levels because we have undertaken a  restructuring to reduce expense levels and  our Nuvion
program in IVSR-UC, which was a significant driver of research  and  development  expenses in the last
three years, was terminated in August  2007. While we anticipate an overall decrease in  research  and
development expenses, we expect that  research and development expense levels  for our earlier  stage
programs will continue to increase as we  advance  these  product candidates  into  later stages  of
development and that we will add new  product  candidates to our development pipeline.  We also expect
that our research and development expenses may change unexpectedly due to changes  in trial design,
cancellation of projects, initiation or  in-licensing  of  new  programs  or  out-licensing of or entering  into
collaborations for our current programs.

OUR MANUFACTURING AND DISTRIBUTION

The manufacture of pharmaceutical products is an  expensive,  multi-step, complex process. Products
must be manufactured in facilities approved by the  U.S. Food and  Drug  Administration (FDA) that are
subject to periodic FDA inspection. Steps in  the manufacturing process,  including the  manufacture of
the active pharmaceutical ingredient,  filling, labeling and packaging, may be managed  by  multiple third-
parties and require extensive coordination.

Antibodies for use as human therapeutics are generally manufactured through the  culture of
mammalian cell lines, which produce  the antibodies. We have  facilities and personnel in  California for
the production and characterization of  such  cell  lines.  We also  engage in process development  activities
intended to improve the productivity and  other characteristics of  such cell lines.  We  believe our
knowledge and capabilities in this area provide  a competitive advantage over  those companies  that
currently lack such process development operations.

7

We  currently manufacture certain antibodies for  use as clinical trial material  in our manufacturing

facility in Brooklyn Park, Minnesota. However, we  entered into a definitive  agreement in February 2008
to sell our Manufacturing Assets to Genmab, and we expect this  transaction to close in the first quarter
of 2008. To fulfill our manufacturing  needs in the  near-term, we have entered into a  clinical supply
agreement with Genmab that would become effective upon the close of the transaction. Under the
terms of this clinical supply agreement,  Genmab would manufacture  on  our behalf  clinical trial  material
for certain of our pipeline products for a minimum of  two years following the  close of the transaction.

Prior to their sale in March 2008, we had outsourced the manufacturing of the Commercial  and

Cardiovascular Assets to third-party contract  manufacturers  in the  continental  United States and in
Puerto Rico. We have transferred all  rights and  obligations under  these manufacturing arrangements  to
Otsuka  and EKR in connection with the  closing of the  sales  of  the IV Busulfex product and the
Cardiovascular Assets, respectively.

Additional information regarding risks associated with manufacturing that affect  our  business  is

contained under the headings ‘‘Manufacturing changes may result in delays in obtaining regulatory
approval or marketing for our products,’’ ‘‘We rely  on sole  source, third-party contract manufacturers to
manufacture our products,’’ and ‘‘Our  business may be harmed if  we cannot obtain sufficient quantities
of raw materials’’ in Item 1A below under the  heading ‘‘Risk Factors.’’

TECHNOLOGY OUTLICENSE AGREEMENTS

We  have been issued patents in the United  States  and elsewhere, covering the humanization of
antibodies, which are known generally as  the Queen patents, which  expire in  2013 and  2014, and are
described in more detailed below under  the heading ‘‘Our Patents  and Other  Proprietary Rights.’’ We
have entered  into license agreements  with numerous  entities that are independently  developing  or have
developed humanized antibodies pursuant  to  which we have licensed  certain rights under our Queen
patents to make and sell therapeutic  antibodies targeting  antigens  specified in  the license  agreements.
In general, we received an upfront licensing fee,  and  rights to receive annual maintenance  fees  and
royalties on any product sales under these  license agreements. Under  some of these agreements,  we
also may receive milestone payments. In addition  to  granting licenses under our Queen patents, some
of these  agreements provide that we  will  perform for a fee certain services related to the humanization
of specified antibodies for the licensee.

The nine humanized antibody products listed below are currently  approved for use by the  FDA

and are licensed under our humanization patents.

Licensee
Genentech, Inc. (Genentech) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Avastin(cid:5)

Product Name

Herceptin(cid:5)
Xolair(cid:5)
Raptiva(cid:5)
Lucentis(cid:5)
Synagis(cid:5)
MedImmune, Inc. (MedImmune) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wyeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mylotarg(cid:5)
Elan Corporation, Plc (Elan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tysabri(cid:5)
Roche . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Zenapax(cid:5)(1)

(1) Roche is obligated to pay us royalties on Zenapax only once product sales have reached a certain
threshold; we have not received royalties on sales of Zenapax since the first quarter of 2006, and
we do not expect to receive royalty revenue from Roche’s sales of Zenapax in the future.

8

Under most of these patent license agreements, we are  entitled to receive a  flat-rate royalty based

upon our licensees’ net sales of covered products. Our master  patent license agreement with
Genentech, however, provides for a tiered  royalty structure  under which the royalty rate Genentech
must pay on royalty-bearing products sold in the United States  or manufactured in the  United States
and sold anywhere (U.S.-based sales)  in  a given calendar  year decreases  on  incremental  U.S.-based
sales above several net sales thresholds. As a result,  Genentech’s average annual  royalty rate  will
decline  as Genentech’s U.S.-based sales increase during that  year. Because we  receive royalties  in
arrears, the average royalty rate for the  payments we receive from Genentech in  the second calendar
quarter—which would be for Genentech’s sales  from the first  calendar quarter—is  higher than  the
average royalty rate for following quarters. The average royalty rate for payments we receive from
Genentech is lowest in the first calendar  quarter, which  would be for Genentech’s sales  from the fourth
calendar quarter, when more of Genentech’s  U.S.-based Sales bear royalties  at lower  royalty rates. With
respect to royalty-bearing products that  are  both  manufactured  and  sold  outside of the  United States
(ex-U.S.-based Sales), the royalty rate that  we receive  from Genentech  is  a fixed rate based  on a
percentage of the underlying ex-U.S.-based Sales. The mix of U.S.-based  Sales and  ex-U.S.-based  Sales
has fluctuated in the past and may continue to fluctuate in future periods.

In 2007, we received $221.1 million of royalty revenues under the license agreements with  the

entities identified above. Because of  the  fundamental  and  significant value of the Queen patents,  we
plan  to continue to pursue discussions  with entities  involved in  research  and development of humanized
antibodies and from time to time expect  to enter  into  additional agreements  under which we would
license rights under our Queen patents to these  entities.  We are aware of dozens  of humanized
antibodies in development worldwide  by  various pharmaceutical  and biotechnology companies. We have
entered into patent license agreements  that may cover many  of  these  products, including two  products,
Actemra(cid:5), which is being developed by Roche, and Cimzia(cid:5),  which  is  being  developed  by  UCB  S.A.,
each  of which is in registration with the  FDA.

In March 2008, we announced that we were  actively evaluating several alternative structures that
would, if completed, result in a distribution  to  our  stockholders. We are carefully evaluating numerous
factors, including tax implications, structural considerations, and market conditions, in  order  to  select
the alternative that would maximize the  value  of  the humanization royalties for  our stockholders. The
structures being evaluated include, among  others, a sale of the right to receive future royalties, a
securitization of future royalties or a distribution  to  stockholders of securities related  to  the royalty
stream. We are also evaluating the form  of any distribution to our  stockholders.

COLLABORATIVE AND STRATEGIC  AGREEMENTS

We  have a collaboration agreement with Biogen Idec  for the joint development,  manufacture and
commercialization of daclizumab in MS  and  indications other than transplant and  respiratory diseases,
and for shared development and commercialization of  volociximab (M200) in all indications. This
agreement requires each party to undertake extensive efforts in  support of the collaboration and
require the performance of both parties to be successful. Under the collaboration agreement,  in the
U.S. and Europe, we and Biogen Idec  share equally the  costs  of  all development activities and,  if any
of the products are commercialized,  all  operating profits. Each party will  have  co-promotion rights  in
the U.S.  and Europe. Outside the U.S.  and Europe, Biogen Idec will  find all incremental development
and commercialization costs and pay a  royalty  to  us on sales of collaboration products. We  are eligible
to receive development and commercialization milestones based  on the further successful  development
of these  antibodies. We may enter into collaboration  agreements for other  of our  development products
to maximize the value of these programs,  mitigate  risks  and  reduce  costs  and  any such future
collaboration agreement may have structural elements similar  to  those in our collaboration agreement
with Biogen Idec.

9

COMMERCIAL PRODUCTS

From March 2005 through the date that we sold the Commercial  and  Cardiovascular Assets
products in March 2008, we marketed  and sold the Cardene IV, Retavase and IV Busulfex commercial
products through our U.S. hospital-focused sales force,  which focused on the emergency cardiac,
neurological and intensive care units of hospitals.  The  net product sales from  all  of  our  former
commercial products are reflected in  loss  from  discontinued operations  in the  Consolidated  Statements
of Operations for 2005, 2006 and 2007.

MAJOR CUSTOMERS

We  define our customers as our collaboration partners and our  licensees from whom we  receive
royalties, reimbursement for research and  development  services,  license  fees and milestone  payments.
Note 18, ‘‘Revenues by Geographic Area  and  Significant  Customers,’’ in the Notes to Consolidated
Financial Statements of Part II, Item  8 of  this Annual Report lists  our major customers  who each
provided over 10% of our total operating  revenues in each  of the last  three years. Also discussed in the
note are material net foreign revenues  by country in  2007, 2006, and 2005.

OUR PATENTS AND OTHER PROPRIETARY RIGHTS

We  expend a significant amount of our  resources on research  and  development  efforts to discover

and develop innovative therapies for  severe or life-threatening  illnesses. Obtaining, maintaining and
protecting the intellectual property rights, including patent rights, developed through our research and
development efforts, is essential for our business to succeed.  To that end, we  actively seek to implement
patent strategies to maximize the effectiveness of  our intellectual property positions. We have been
issued numerous U.S and foreign patents  and have a  variety of patent applications pending in the U.S.
and various foreign countries covering, among other  things,  compositions of matter, drug formulations,
methods of use and action, and manufacturing.

Our Queen patents, which expire in the United States in the  2013/2014 timeframe,  are of

significant value to us. We have licensed  to other entities  rights under  our  Queen  patents  pursuant to
which  we have received and expect to continue to receive  royalty revenues (see ‘‘Technology
Out-License Agreements’’ above). These patents cover,  among other things, humanized antibodies,
methods for humanizing antibodies, polynucleotide  encoding  in humanized antibodies and methods of
producing humanized antibodies.

Two humanization patents based on the  Queen  technology were issued to us by the European
Patent Office. However, 18 notices of  opposition to our first European patent and  eight notices of
opposition to our second European patent were filed by  major  pharmaceutical and biotechnology
companies, among others. Five opponents,  including  Genentech, have  withdrawn from the  opposition
proceedings regarding our first European patent. Additional information  regarding these proceedings
and their status, as well as our litigation with Alexion, is  set forth under the heading ‘‘Legal
Proceedings’’ in Part I, Item 3 of this Annual Report.

While we file and prosecute patent applications to protect our inventions, our pending patent

applications may not result in the issuance of  patents or our  issued patents may not provide
competitive advantages. Also, our patent  protection may not prevent others from developing
competitive products using related or other technology.

In addition to seeking the protection  of patents and  licenses,  we also rely  upon trade  secrets,
know-how and continuing technological  innovation,  which we  seek to protect, in part,  by  confidentiality
agreements with employees, consultants, suppliers and licensees.  If these  agreements are  not  honored,
we might not have adequate remedies  for any  breach. Additionally,  our trade secrets might otherwise
become  known or patented by our competitors.

10

A number of companies, universities and research institutions have filed patent applications or
received patents in the areas of antibodies and other fields relating to our  programs.  Some  of these
applications or patents may be competitive with our applications or  contain material that could prevent
the issuance of patents to us or result  in  a significant  reduction in  the scope of our issued patents.
Additionally, other companies, universities  and research  institutions may obtain patents that could limit
our  ability to use, import, manufacture, market or sell our products,  commonly referred to as  our
‘‘freedom to operate,’’ or impair our  competitive position.  As a  result, we  might be required  to  obtain
licenses from others before we could  continue using, importing, manufacturing, marketing,  or selling
our  products. We may not be able to obtain required licenses on  terms acceptable to us, if at all. If we
do not obtain required licenses, we may encounter significant  delays in  product development  while we
redesign potentially infringing products  or methods or may not be able to market our products  at all.

The scope, enforceability and effective term of issued  patents can be highly uncertain and  often
involve complex legal and factual questions.  No consistent  policy has emerged regarding  the breadth of
claims in biotechnology patents, so that  even issued patents may later be modified or revoked by the
relevant patent authorities or courts.  Moreover,  the issuance of a patent in  one country does  not  assure
the issuance of a patent with similar claim scope in another country, and claim interpretation and
infringement laws vary among countries, so we are unable  to predict the extent of  patent  protection in
any country. We cannot assure you that the patents  we obtain or the unpatented  proprietary technology
we hold will afford us significant commercial protection.  Additional information  regarding risks
associated with our patents and other  proprietary rights that affect  our business  is contained under the
headings ‘‘If we are unable to protect our patents and proprietary technology, we may not be able to
compete successfully,’’ ‘‘Our humanization patents are being  opposed and a  successful challenge  or
refusal to take a license could limit our future revenues,’’  and ‘‘We may require additional  patent
licenses in order to manufacture or sell our potential products’’ in Item 1A below under  the heading
‘‘Risk Factors.’’

GOVERNMENT REGULATION

The manufacturing, testing, labeling,  approval and storage of our  products are  subject to rigorous

regulation by numerous governmental authorities  in the United States and  other countries at  the
federal, state and local level, including the FDA. The process of obtaining approval  for a  new
pharmaceutical product or for additional therapeutic indications within  this regulatory framework
requires expenditure of substantial resources  and usually takes several years.  Companies in  the
pharmaceutical and biotechnology industries, including us, have suffered significant setbacks in various
stages of clinical trials, even in advanced clinical trials after promising results  had been obtained in
earlier trials.

The process for obtaining FDA approval of drug  candidates customarily begins  with the filing with

the FDA of an IND for the use of a  drug  candidate to treat  a particular indication. If  the IND is
accepted by the FDA, we would then  start human clinical trials  to  determine, among other  things, the
proper dose, safety and efficacy of the drug  candidate in the  stated indication. The  clinical trial process
is customarily divided into three phases—phase 1,  phase 2 and phase  3. Each  successive phase  is
generally larger and more time-consuming and  expensive than  the preceding phase.  Throughout each
phase we are subject to extensive regulation and oversight by the FDA. Even after a drug  is approved
and being marketed for commercial use,  the FDA may require that we conduct additional trials,
including ‘‘phase 4’’ trials, to further  study  safety  or efficacy.

As part of the regulatory approval process, we must demonstrate  to  the FDA the ability  to
manufacture a pharmaceutical product  before  we receive  marketing approval. The manufacturing and
quality control procedures we must undertake must conform  to  rigorous standards in  order to receive
FDA approval. Pharmaceutical manufacturers  are subject to inspections by the FDA and local
authorities as well as inspections by authorities  of other countries. To supply pharmaceutical products

11

for use in the United States, foreign  manufacturers must comply with  these  FDA-approved guidelines.
These foreign manufacturers are also subject to periodic inspection  by the FDA  or by corresponding
regulatory agencies in these countries under reciprocal agreements with the FDA. Moreover, state,
local and other authorities may also  regulate pharmaceutical product  manufacturing facilities. Before
we are able to manufacture commercial  products, we  or our contract  manufacturer, as the case may  be,
must meet FDA guidelines.

For the development of pharmaceutical products outside  the United  States, we and our  partners

are subject to foreign regulatory requirements and, if the particular product is  manufactured in  the
United States, FDA and other U.S. export  provisions. Requirements relating to the  manufacturing,
conduct of clinical trials and product  licensing vary widely  in different countries. We or  our  licensees
may encounter difficulties or unanticipated costs  or price controls  in our respective efforts  to  secure
necessary governmental approvals. This could delay or prevent  us or our licensees from  marketing
potential pharmaceutical products. In  addition, our promotional materials and  activities must also
comply  with FDA regulations and other  guidelines.

Both before and after marketing approval is obtained, a pharmaceutical  product, its manufacturer

and the holder of the Biologics License  Application (BLA) or New Drug Application  (NDA) for the
pharmaceutical product are subject to comprehensive  regulatory oversight. The FDA may deny
approval to a BLA or NDA if applicable regulatory criteria are not satisfied.  Moreover, even if
regulatory approval is granted, such approval  may  be  subject to limitations on  the indicated uses for
which  we may market the pharmaceutical  product.  Further,  marketing approvals may be withdrawn if
compliance with regulatory standards  is  not maintained or  if problems with the pharmaceutical product
occur following approval. In addition, under a BLA  or NDA, the manufacturer of the product
continues to be subject to facility inspections and the applicant must assume responsibility for
compliance with applicable pharmaceutical product and  establishment standards. Violations of
regulatory requirements at any stage  may result in various adverse  consequences, which  may include,
among other adverse actions, withdrawal of the previously approved pharmaceutical product or
marketing approvals or the imposition  of  criminal penalties against the manufacturer or BLA or  NDA
holder.

The marketing and sale of approved  pharmaceutical product  is subject  to strict  regulation.

Physicians may prescribe pharmaceutical  or biologic products  for  uses that are  not  described in  a
product’s labeling or differ from those tested by us and  approved  by the  FDA.  While  such ‘‘off-label’’
uses are common and the FDA does  not  regulate physicians’ choice of  treatments, the FDA  does
restrict a company’s communications on  the subject  of ‘‘off-label’’  use. Companies cannot promote
FDA-approved pharmaceutical or biologic products for  off-label uses. If  our advertising or promotional
activities fail to comply with applicable  regulations or  guidelines regarding  ‘‘off-label’’ use, we  may be
subject to warnings or enforcement action.

Additional information regarding the  regulatory matters that affect our business  is contained under

the heading ‘‘Changes in the U.S. and  international health care industry, including regarding
reimbursement rates, could adversely affect the commercial value of  our development  products,’’ ‘‘The
clinical development of drug products is  inherently uncertain and expensive  and subject to extensive
government regulation,’’ ‘‘The ‘‘fast track’’ designation for development of any of our products  may not
lead to a faster development or regulatory review or approval process  and  it does not increase  the
likelihood the product will receive regulatory approval,’’ ‘‘Manufacturing changes may  result in delays
in obtaining regulatory approval or marketing  for  our  products,’’ ‘‘We must comply  with extensive
government regulations and laws,’’ and  ‘‘We  may  be  unable to obtain or maintain  regulatory approval
for our  products,’’ in Item 1A below  under the heading  ‘‘Risk Factors.’’

12

COMPETITION

Competitors and potential competitors relative to the products  we  marketed until  March 2008 in

the United States and other countries include major  pharmaceutical and chemical companies,
specialized pharmaceutical companies and  biotechnology firms, universities  and other research
institutions. Our competitors for the marketed products include Baxter International  Inc., Bedford
Laboratories, Hospira, Inc., Genentech and GlaxoSmithKline.

Potential antibody-based competitors  have developed and are developing mouse, chimeric, human

and humanized antibodies or other compounds for treating autoimmune and inflammatory diseases,
transplantation, asthma and cancers.  In addition, a  number of academic  and  commercial organizations
are actively pursuing similar technologies, and several companies have developed or  may develop
technologies that may compete with our antibody technology  platform. Competitors may succeed in
more rapidly  developing and marketing technologies and products that  are more  effective  than our
products or that would render our products or technology obsolete or noncompetitive. Our
collaborative partners may also independently  develop products that are competitive with products that
we have licensed to them. This could reduce our revenues under our agreements  with these partners.
Any product that we or our collaborative  partners succeed  in developing and  for which regulatory
approval is obtained must then compete for market acceptance and market share. The  relative speed
with which we and our collaborative  partners can develop products, complete clinical  testing and
approval processes, and supply commercial quantities of the products to the market compared  to
competitive companies will affect market success. In addition, the amount of  marketing and sales
resources, and the effectiveness of the marketing used with respect  to  a  product will affect  its  success.

Other competitive factors affecting our business generally include:

(cid:127) product efficacy and safety;

(cid:127) timing and scope of regulatory approval;

(cid:127) product availability, marketing and  sales capabilities;

(cid:127) reimbursement coverage;

(cid:127) the amount of clinical benefit of our products relative to their cost;

(cid:127) method of and frequency of administration of  our products;

(cid:127) patent protection of our products;

(cid:127) the capabilities of our collaborative  partners; and

(cid:127) the ability to hire qualified personnel.

EMPLOYEES

As of January 31, 2008, we had 887 full-time  employees. Of the total, 529 were  engaged in

research and development, 170 in sales and marketing and 188  in general  and administrative functions.
Our scientific staff members have diversified  experience  and  expertise in molecular and cell biology,
biochemistry, immunology, protein chemistry, computational chemistry and  computer modeling. Our
success will depend in large part on our ability to attract  and retain skilled and experienced employees.
None of our employees is covered by  a collective bargaining agreement. We consider our relations with
our  employees to be good.

In an effort to reduce operating costs  to a level more consistent  with a biotechnology company

focused solely on antibody discovery and  development, in March  2008 we  commenced  a restructuring
effort pursuant to which we plan to eliminate approximately 250 employment positions. In March 2008,
we provided 60-days notice of termination to 128  employees whose positions were  eliminated in

13

connection with our restructuring. We  plan  to  eliminate  the remainder  of these  250 employment
positions over approximately one year. This reduction is  in addition to the elimination of approximately
165 positions in connection the closings of  the sale  of  the Commercial and Cardiovascular assets and
the approximately 170 employment positions we would  eliminate in connection  with the planned sale of
our  Manufacturing Assets. Subsequent  to  effecting all  of  the above  reductions, we expect that our
workforce will consist of approximately  300 employees.

ENVIRONMENTAL COMPLIANCE

We  seek to comply with environmental  statutes and the regulations of federal, state  and local
governmental agencies. We have put into place processes and  procedures and maintain records in order
to monitor environmental compliance.  We  may invest additional resources, if required, to comply with
applicable regulations, and the cost of such compliance may increase significantly.

AVAILABLE INFORMATION

For a  report of our fiscal year 2007 loss, total assets, the amount we spent on  research  and

development activities, and our revenues  from external  customers, including a  geographic breakdown  of
such revenues, see the Consolidated Financial Statements  in Part II,  Item 8 of this Annual Report.

We  file electronically with the Securities  and Exchange  Commission (SEC)  our  annual reports  on

Form 10-K, quarterly reports on Form  10-Q and current reports on Form 8-K pursuant to Section  13(a)
or 15(d) of the Securities Exchange Act  of 1934. The public may read and  copy  any materials we file
with the SEC at the SEC’s Public Reference Room  at 450  Fifth Street, NW,  Washington,  DC 20549.
The public may obtain information on  the operation  of the Public Reference Room  by  calling the SEC
at 1-800-SEC-0330. The SEC maintains an  Internet site that contains reports, proxy and  information
statements, and other information regarding issuers  that  file electronically  with the SEC.  The address
of that site is http:/ /www.sec.gov.

We  make available free of charge on  or  through our website at www.pdl.com our annual reports on
Form 10-K, quarterly reports on Form  10-Q, current reports on Form 8-K  and proxy statements, as well
as amendments to these reports and  statements, as soon  as practicable after we have electronically  filed
such material with, or furnished it to,  the  SEC. You may also obtain  copies  of these  filings  free of
charge  by contacting our Corporate and  Investor Relations Department by calling (650) 454-1000.

ITEM 1A. RISK FACTORS

You should carefully consider and evaluate all of the information included and incorporated by
reference in this Annual Report, including the risk factors listed below. Any of these risks, as well as
other risks and uncertainties, could materially and adversely affect  our business,  results of operations
and financial condition, which in turn could  materially and adversely  affect the trading price of  shares
of our common stock. Additional risks not currently known or  currently  material to us may  also harm
our  business.

Keep these risk factors in mind when you read forward-looking  statements contained in this
Annual Report and the documents incorporated by reference  in this  Annual Report. These statements
relate to our expectations about future  events and  time periods. In some  cases, you can identify
forward-looking statements by terminology such as ‘‘may,’’  ‘‘will,’’ ‘‘intends,’’ ‘‘plans,’’ ‘‘believes,’’
‘‘anticipates,’’ ‘‘expects,’’ ‘‘estimates,’’ ‘‘predicts,’’  ‘‘potential,’’  ‘‘continue’’ or  ‘‘opportunity,’’ the negative
of these  words or words of similar import. Similarly,  statements that  describe our reserves  and our
future plans, strategies, intentions, expectations, objectives, goals or prospects are also forward-looking
statements. Forward-looking statements  involve risks and uncertainties, and  future events  and
circumstances could differ significantly from those anticipated in the forward-looking  statements.

14

From March 2005 through the date that we sold the Commercial  and  Cardiovascular Assets
products in March 2008, we marketed  and sold the Cardene IV, Retavase and IV Busulfex commercial
products through our U.S. hospital-focused sales force,  which focused on the emergency cardiac,
neurological and intensive care units of hospitals.  Our periodic  reports on Form 10-Q and 10-K filed
during this period included risk factors  related to our marketing and sale  of commercial products.
Because we closed the sales of these products in  March 2008,  these  risk factors  no longer apply  to  us
and do not appear below.

We have ended our solicitation of interest in the Company and  its assets,  other than our humanization
royalty stream assets, and undertaken  to  restructure the Company, which could distract our
management and employees, disrupt operations, make  more difficult our  ability to  attract and retain
key employees and cause other difficulties.

From October 2007 until March 2008, we pursued  a process to solicit interest in the  purchase  of
the Company or its key assets, including  our commercial and cardiovascular  assets and humanization
royalty stream assets. In March 2008,  we  announced  that we  had ended  the process  announced on
October 1, 2007, and would focus on  discovering and developing innovative  new antibodies for cancer
and immunologic diseases. We also announced  that we are evaluating several alternative structures that
would, if completed, result in the distribution to our stockholders of 50%  or more of the value of
future antibody humanization royalties that  would be received from currently marketed products.

In an effort to reduce operating costs  to a level more consistent  with a biotechnology company
focused solely on antibody discovery and  development, in March  2008, we  commenced  a restructuring
pursuant to which we intend to eliminate  approximately 250 employment positions over approximately
one year. The restructuring will take  time  to  implement  and we will need to provide various  transition
services to Otsuka, EKR and Genmab  in  connection  with our sale of assets  to  these parties. As a
result, we hope to retain during a transition period of less  than a year  approximately  120 of the 250
employees who will be terminated in connection with  our  restructuring. We have offered these
transition employees and the employees  that  we expect to retain after the restructuring retention
bonuses  and  other  incentives  to  encourage  these  employees  to  stay  with  the  Company.  The  disruption,
anxiety and uncertainty caused by our restructuring  could  cause  employees to seek other employment
opportunities notwithstanding the retention  incentives we have implemented. The  loss of personnel
during this period could disrupt operations and adversely impact our ability to perform the  transition
services we are obligated to perform  for  Otsuka,  EKR and Genmab.

This disruption and uncertainty may also make the recruitment of  key  personnel more difficult. We
are currently engaged in a search for a new Chief Executive  Officer, and the disruption and uncertainty
caused by our restructuring may make such recruitment more difficult. The failure to recruit a  new
Chief Executive Officer could adversely impact our future performance

Our restructuring efforts have and may continue to divert the attention of  our management and

employees away from our operations,  harm our reputation and increase our expenses. We cannot
assure you that we will not undertake additional restructuring activities, that any of our restructuring
efforts will succeed, or that we will be  able to realize the  cost savings and other anticipated benefits
from our restructuring plans.

In addition, employees whose positions we  will  eliminate  in connection with this reduction may

seek employment with our competitors.  Although all employees are required  to  sign a confidentiality
agreement with us at the time of hire,  we cannot assure you that the  confidential nature  of  our
proprietary information will be maintained in the course of such  future employment.

15

We may not be able to realize revenues  based on receipt of contingent  consideration from the sale of
our Cardiovascular Assets.

In March 2008, we sold our Cardiovascular Assets  to  EKR for $85  million  in cash  at closing, and

up to an additional $85 million in development and sales  milestones, as well as royalty  payments.
Receipt of these milestone and royalty payments is  dependent upon certain contingencies, including the
receipt of marketing approval from the  United  States Food and  Drug  Administration and  future net
sales. We cannot assure you that these  development and  sales  milestones will be met  and that we will
be able to receive any of the additional $85 million in milestone payments and any of the royalty
payments based on future net sales.

We may not be able to consummate the  sale  of our manufacturing related assets in Minnesota  to
GMN, Inc.

In February 2008, we entered into a definitive agreement  with GMN Inc., a wholly owned

subsidiary of Genmab A/S (Genmab), for the  sale of  our Manufacturing Assets. Consummation of this
transaction is subject to certain conditions. These conditions  and contingencies include the  expiration of
the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act  of  1976 (HSR)  and the
receipt of consents from third parties, including  third parties which have the right to consent to the
transfer of contractual rights. We have received early termination of  the  waiting period under HSR,
however, we cannot assure you that the  other conditions to close  will be met or waived in a  timely
manner or at all, that the necessary approvals  will be obtained, or that  we  will be able to successfully
consummate this transaction as currently  contemplated  or at  all. Any significant delay in obtaining
required approvals or satisfying closing  conditions, or  other developments relating to this  transaction,
may result in continued uncertainty for our partners and employees, could  cause continued distraction
to management or could otherwise increase the risk  of the planned sale of  our  Manufacturing Assets
not occurring.

If this transaction is not consummated, whether as  a result of the termination  of the agreement or

a failure to meet closing conditions:

(cid:127) the market price of our common stock may decline to the extent  that the current  market price

includes a market assumption that this  transaction will be completed;

(cid:127) we would remain liable for significant transaction costs,  including legal, accounting, financial

advisory and other costs relating to these transactions, without receiving the acquisition
consideration to offset these costs;

(cid:127) we may experience a negative reaction  to  the termination of this  transaction from  our partners

or employees, which may adversely impact  our future operating results; and

(cid:127) we would not be able to distribute the net proceeds of this sale  to  our stockholders as currently

contemplated.

The occurrence of any of these events individually or in combination  could  have a material effect

on our results of operations and our  stock price. In addition, if  the agreement  for the  sale of our
Manufacturing Assets is terminated, and we seek another buyer  or  buyers,  we may not be able to find  a
party willing to pay a price as attractive  as the price  Genmab has agreed  to pay.

The process of pursuing and implementing multiple significant transactions and transaction  structures
simultaneously diverts the attention of  our management and employees,  increases  our  professional
services expenses and may disrupt our  operations.

The process of pursuing an asset sale  and other strategic transactions is  generally a

time-consuming process for the seller  and  demands  the time and  efforts of management and employees

16

during the due diligence, negotiation  and  transition processes, including management presentations and
discussions  with  and  document  production  to  potential  buyers,  the  evaluation  of  bids  from  potential
buyers, review of alternative structures and, when a transaction is pursued, the  negotiation  of
agreements. In addition, once completed, asset sale transactions  may  require a substantial transition
effort, with significant on-going management  efforts. The demands of this process tend to be
compounded in an auction process in which a  seller is interacting  with multiple bidders  simultaneously.
The process we have undertaken entails our pursuing  multiple strategic  transactions simultaneously,
including the sale or other monetization  of our humanization royalty stream  assets in  an auction
process. We have closed two of these transactions, the sale  of  IV Busulfex  product related rights to
Otsuka,  and the sale of the Cardiovascular Assets  to  EKR and are in the process of completing the
sale of our Manufacturing Assets to Genmab, and we  will have ongoing, post-closing transition
obligations to each of these parties. The diversion  of our management’s  and employees’ attention to
these processes may disrupt our operations, including by  adversely impacting the progress of  our
discovery  and development efforts and  our  relationships with partners.

We  have increased our expenditures  for  professional  services  in connection with our pursuit of

offers for the sale of our entire Company or of our key assets, including for legal and accounting
services, and we will also be obligated to pay  investment banking fees upon the completion of certain
transactions we have executed or may  execute.

We may not implement a structure to  distribute  to our  stockholders the value of our antibody
humanization patent royalty stream received from  currently marketed licensed products.

The form, size and timing of any royalty-related distribution  is uncertain and the conclusion of any

transaction or structure leading to such  a  distribution would  be  subject to numerous  conditions
including potential negotiation with third  parties,  market  conditions and determination of the  final
form, which could include, among others,  a sale of the  right to future royalties, a  securitization  of
future royalties, or a distribution to stockholders of securities related to the  royalty stream. We may  not
be able to implement a structure relating  to our antibody humanization  patent  royalty stream on terms
acceptable to us, or at all. The consummation of any  transaction or structure relating to the royalty
stream, even if on acceptable terms,  could  be  adversely impacted or prevented  by  failure to satisfy
closing conditions or regulatory delays.

We have a history of operating losses and may not achieve sustained profitability.

In general, our expenses have exceeded our revenues. As of December 31, 2007, we had  an
accumulated deficit of $591.3 million.  We expect our  operating expenses in the near term to decrease
significantly  relative  to  expense  levels  during  2005  to  2007  because  we  have  divested  the  Commercial
and Cardiovascular Assets we formerly  held  and  have undertaken a  significant restructuring and
reduction in force. We will, however,  incur a  significant amount of restructuring costs  through 2008,
including  severance  payments  to  terminated  employees  and  additional  costs,  including  retention
incentives to retained employees. After these divestitures and our  restructuring are complete,  operating
expenses may increase on average if we are successful in advancing  potential products  in clinical  trials
primarily because of the extensive resource  commitments required to achieve regulatory approval.

Since we or our partners or licensees may not successfully develop additional  products, obtain
required regulatory approvals, manufacture products  at an  acceptable  cost or with  appropriate  quality,
or successfully market such products with desired margins, our expenses  may continue to exceed our
revenues. Our commitment of resources  to the continued development  of our  products will require
significant additional funds for development. Our operating  expenses may  also increase as:

(cid:127) our earlier stage potential products  move into later stage clinical development, which is generally

a more expensive stage of development;

17

(cid:127) additional pre-clinical product candidates are selected for  further clinical development;

(cid:127) we pursue clinical development of  our  potential products in new indications;

(cid:127) we increase the number of patents  we  are prosecuting;

(cid:127) we expend additional resources to defend our patents;

(cid:127) we invest in research or acquire additional technologies,  product candidates or businesses; and

(cid:127) we increase our capital expenditures  as we  improve our  research, development and other

facilities and as a result also record higher depreciation expenses.

In the absence of substantial revenues from  licensing and  other revenues  from third-party
collaborators, royalties on sales of products  licensed  under our intellectual property rights  or other
sources  of revenues, we will continue  to  incur  operating losses and may require  additional capital  to
fully execute our business strategy. The likelihood  of reaching and time required to reach sustained
profitability are highly uncertain.

Our revenues, expenses and operating  results will likely fluctuate in future periods.

Our revenues and revenue growth have  varied in the  past and will  likely continue to fluctuate

considerably from quarter to quarter  and  from year to year. As a result,  our revenues in  any period
may not be predictive of revenues in  any  subsequent  period.  In particular,  because we  have divested
our  Commercial and Cardiovascular  Assets, sales of which constituted  40% and  44% of our total
revenues (including discontinued operations) in 2006  and  2007,  respectively,  we expect our revenues  to
decline  significantly in the near term. We  are also  actively evaluating structures that would  result in the
distribution to our stockholders of 50%  or more of the  value of future  antibody humanization royalties
to be received from currently marketed  products. Our humanization royalty stream  assets constituted
74% and 85% of our revenues from continuing operations  in 2006 and 2007, respectively. In addition,
our  royalty revenues, even after any potential transaction,  may be unpredictable and fluctuate since
they depend upon:

(cid:127) the seasonality and rate of growth  of sales of existing  and licensed  products;

(cid:127) the mix of U.S.-based Sales and ex-U.S.-based Sales  in connection with our master patent license

agreement with Genentech;

(cid:127) the existence of competing products;

(cid:127) the continued safety of approved licensed products;

(cid:127) the marketing and promotional efforts of our licensees from whom we receive  royalty payments;

(cid:127) our ability to successfully defend and enforce our patents; and

(cid:127) the timing of milestone payments,  licensing  and  signing fees and completion  of  manufacturing,

development or other services we must pay or  that  we may receive under licensing, collaboration
and royalty arrangements.

We  receive a significant portion of our royalty  revenues from  sales of Synagis, which is marketed
by MedImmune. This product has significantly higher sales in the fall and winter,  which to date  have
resulted in much higher royalties paid  to  us in our first and  second  quarters than  in other quarters. The
seasonality of Synagis sales is expected to continue to contribute to fluctuation in our revenues from
quarter to quarter.

Additionally, our master patent license agreement with Genentech provides for a tiered royalty
structure under which the royalty rate Genentech must  pay  on  royalty-bearing products  sold  in the
United States or manufactured in the  United States and sold anywhere  (U.S.-based Sales) in a  given

18

calendar year decreases on incremental U.S.-based Sales  above several net sales thresholds.  As a  result,
Genentech’s average annual royalty rate declines as Genentech’s U.S.-based  Sales increase. Because  we
receive royalties in arrears, the average  royalty rate for  the payments we receive  from Genentech in the
second  calendar quarter—which would be for Genentech’s sales from the first calendar quarter—is
higher  than the average royalty rate for following quarters and is lowest in the first calendar quarter
when more of Genentech’s U.S.-based  Sales bear royalties  at lower  royalty rates. The average royalty
rate for payments we receive from Genentech is lowest in the  first calendar  quarter  of each year, which
would be for Genentech’s sales from the  fourth calendar quarter from  the preceding year, when  more
of Genentech’s U.S.-based Sales bear  royalties at lower royalty rates. With respect  to  Genentech’s
royalty-bearing products that are both manufactured and sold outside of the United  States (ex-U.S.-
based Sales),  the royalty rate that we receive from Genentech  is a fixed rate based  on a  percentage of
the underlying ex-U.S.-based Sales. The mix of U.S.-based  Sales and ex-U.S.-based  Sales and  the
manufacturing location has fluctuated in the past and may continue  to  fluctuate in  future periods.

The recognition of license, collaboration and  other revenues  that we  otherwise would  defer  and
recognize over a period of time under applicable accounting principles may be accelerated in certain
circumstances. For example, if a licensee  of ours terminates a development program  for which we
received an upfront non-refundable fee that  required  our ongoing performance, the recognition of the
revenues would be accelerated and recognized in the  period  in which the  termination  occurred. In  such
a case, it may cause our revenues during that period  to  be  higher than it otherwise would  have been
had the circumstances not occurred. For example,  during  the third quarter of 2006 we recognized
$18.8 million of deferred revenue, or  17%  of the  total  revenues for that quarter,  related to Roche’s
election in August 2006 to discontinue its co-development of daclizumab in treating asthma and other
respiratory diseases.

Our expenses may be unpredictable and may fluctuate from quarter  to  quarter due to the  timing
and the unpredictable nature of clinical trial  and  related expenses, including  payments owed  by  us and
to us under collaborative agreements  for reimbursement of expenses  and which we  record during the
quarter in which such expenses are reported  to  us  or to our partners and agreed to by us or  our
partners. Moreover, the underlying terms  of in-licensing and royalty arrangements, especially those with
tiered payment structures, will impact  the timing of costs and expenses recognized during any particular
quarter. In addition, the recognition of clinical trial and other  expenses that we otherwise  would
recognize over a period of time under applicable accounting principles may be accelerated in certain
circumstances. In such a case, it may cause  our expenses during that  period to be higher  than they
otherwise would have been had the circumstances  not occurred. For example, if  we terminate a  clinical
trial for which we paid non-refundable  upfront fees to a clinical research organization  and in which we
did not accrue all of the patient costs, the recognition of the  expense associated with those  fees  that  we
were recognizing as we accrued patient  costs would be accelerated and recognized in the  period in
which  the termination occurred.

We face significant competition.

We  face significant competition from entities  with substantially greater resources than we  do, more

experience in the commercialization and marketing  of pharmaceuticals, superior product development
capabilities and superior personnel resources. Potential competitors in  the United  States  and other
countries include major pharmaceutical  and chemical companies, specialized pharmaceutical  companies
and biotechnology firms, universities  and other research  institutions. These entities have developed and
are developing human and humanized  antibodies or other compounds for treating autoimmune and
inflammatory diseases, asthma and cancers and technologies that may compete with our  antibody
technology platform. These competitors  may succeed in more rapidly developing and marketing
technologies and products that are more  effective than  our products or that would render our products
or technology obsolete or noncompetitive.  Our products may also face significant competition  from

19

both brand-name and generic manufacturers that could adversely  affect  the  future sales of our
products.

Any product that our collaborative partners or we succeed  in developing and  for which regulatory

approval is obtained must then compete for market acceptance and market share. The  relative speed
with which we and our collaborative  partners can develop products, complete the clinical testing  and
approval processes, and supply commercial quantities of the products to the market compared  to
competitive companies will affect market success. In addition, the amount of  marketing and sales
resources and the effectiveness of the marketing used with respect to a  product will affect  its marketing
success.

Changes  in the U.S. and international  health care industry,  including  regarding reimbursement rates,
could adversely affect the commercial  value of our  development  products.

The U.S. and international health care  industry  is subject to  changing political,  economic and

regulatory influences that may significantly affect the  purchasing practices and pricing of
pharmaceuticals. The FDA and other  health  care  policies may change, and additional government
regulations may be enacted, which could  prevent or delay regulatory  approval of our product
candidates. Cost containment measures,  whether instituted by health care providers or imposed by
government health administration regulators  or new  regulations, could result in greater selectivity  in the
purchase of drugs. As a result, third-party payers may  challenge the price  and cost effectiveness of our
products. In addition, in many major markets  outside the United States, pricing approval is required
before sales may commence. As a result, significant uncertainty exists as to  the reimbursement status of
approved health care products.

We  may not be able to obtain or maintain  our desired price for  the products we develop. Any
product  we introduce may not be considered  cost effective relative to alternative therapies. As  a result,
adequate third-party reimbursement may  not be available to enable us to obtain or maintain prices
sufficient to realize an appropriate return  on our  investment in product development, should any of our
development products be approved for  marketing. Also,  the trend towards  managed health care in the
United States and the concurrent growth  of organizations such as health maintenance organizations,  as
well as legislative proposals to reform  health care or reduce government insurance programs, may  all
result in lower prices, reduced reimbursement  levels and diminished markets  for our development
products. These factors will also affect  the products  that are marketed by our collaborative partners
and licensees. We cannot predict the  likelihood, nature or  extent of adverse government regulation that
may arise from future legislation or administrative action, either in the United States or abroad. If we
are not able to maintain regulatory compliance, we might not be permitted to market our future
products and our business could suffer.

Our humanization patents, which are of  significant value to us, are being  challenged and a successful
challenge or refusal to take a license  could limit our  future revenues.

Our Queen patents are of significant value to us. Royalty  revenues  received under agreements for

the license of rights under our Queen  patents accounted for 82%  of revenues  from continuing
operations in 2005, 74% of revenues from continuing operations in  2006 and  85% of revenues from
continuing operations in 2007. We are actively  evaluating structures  that would result  in the distribution
to our stockholders of 50% or more of  the value of future antibody humanization  royalties to be
received from currently marketed products. We expect  that these royalty revenues  will  constitute the
vast majority of our revenues now that  we  have completed the divestiture of  our commercial  products.
We  expect that we will continue to experience aggregate royalty revenue  growth based on the assumed
continued growth in aggregate product sales underlying our royalty revenues and that these royalty
revenues will continue to represent the majority of our total revenues until our Queen patents expire in
2014.

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Two of our Queen patents were issued  to  us  by  the European Patent  Office, European Patent
No. 0 451 216 (the ‘216 Patent) and European Patent No.  0 682 040 (the  ‘040 Patent). Eighteen notices
of opposition to our ‘216 Patent and eight notices of opposition to our ‘040 Patent were filed  by  major
pharmaceutical and biotechnology companies,  among  others, and we are currently  in two separate
opposition proceedings with respect to these  two  patents. Although six  opponents,  including Genentech,
have withdrawn from the opposition  proceedings with respect to the opposition to our ‘216 Patent, 12
opponents to this patent remain. In addition, although  the Opposition Division upheld claims in  our
‘216 Patent in April 2007 that are virtually identical to the claims  remitted by the Technical Board of
Appeal to the Opposition Division, the opponents in this opposition have  the right to appeal the
Opposition Division’s recent decision and this proceeding has not yet  concluded. A description of  both
opposition proceedings is included under  the heading ‘‘Legal  Proceedings’’ in Part II, Item  1 of this
Quarterly Report. If our patents are successfully opposed  in either of  these  two proceedings or third
parties decline to take licenses to our  Queen patents, our future  revenues would be adversely affected.
For example, if the opponents in the  proceeding regarding our ‘216 Patent are successful, our ability to
collect royalties on European sales of  antibodies humanized by  others would depend on: (i) the scope
and validity of our ‘040 Patent; and (ii) whether the antibodies are manufactured  in a country outside
of Europe where they are covered by one  or more of our patents  and, if so, on the  terms of our license
agreements.

In addition, until the opposition proceedings are  resolved, we  may  be  limited in our ability to
collect royalties or to negotiate future  license agreements based on  our Queen  patents. An adverse
decision by the Opposition Division could encourage challenges to our  related Queen patents in other
jurisdictions, including the United States. Such a  decision may lead some of our licensees to stop
making royalty payments or lead potential  licensees not to take a license, either of  which might result
in us initiating formal legal proceedings  to  enforce our  rights under our  Queen patents. In such a
situation, a likely defensive strategy to  our action would  be  to  challenge our patents in  that  jurisdiction.
During  the opposition process with respect to our ‘216  Patent, if we were to commence  an infringement
action in Europe to enforce that patent,  such an  action would likely be stayed until  the opposition is
decided by the European Patent Office.  As a result, we  may not be able to  successfully  enforce our
rights under our European or related  U.S. patents.

Although we intend to vigorously defend  the European patents in these two proceedings, we may

not prevail in either of these opposition  proceedings or  any  litigation  contesting the validity of these
patents. For example, our Japanese humanization patent, which was issued  in September  1998, was
opposed and eventually revoked by the Japanese Patent Office in March  2001. Although  we appealed
the Japanese Patent Office’s revocation of this  patent,  the Tokyo High Court  upheld the revocation of
the patent and, in December 2004, the  Japanese  Supreme  Court  denied  our petition for review of the
Tokyo High Court’s decision. The decision by the  Japanese Supreme Court concluded the proceedings
in the matter and the Japanese Patent  Office’s  decision  to  revoke our patent is  final and
nonappealable.

If the outcome of either of the European  opposition proceedings  or any litigation involving  our

antibody  humanization patents were to be unfavorable, our  ability  to  collect  royalties on existing
licensed products and to license our patents relating to humanized antibodies may be materially
harmed. In addition, these proceedings or  any  other  litigation to protect our intellectual property rights
or defend against infringement claims  by others could result in substantial costs and diversion of
management’s time and attention, which  could  harm our business and financial  condition.

Our ability to maintain and increase our  revenues from licensing our Queen patents is dependent

upon third parties  entering into new patent licensing arrangements, exercising rights under  existing
patent rights agreements, paying royalties under existing patent licenses with  us and  not  terminating
those existing licenses with us. To date, with  the exception of Alexion Pharmaceuticals,  Inc. (Alexion),
we have succeeded in obtaining and maintaining such licensing arrangements,  and in  receiving  royalties

21

on product sales, from parties whose  products may be covered by our  patents. However, there can be
no assurance that we will continue to succeed in our  licensing efforts in the future.  In  the past, we  have
experienced challenges in our licensing  efforts,  such as the  disagreement  we had with Genentech in
2003 over whether its Xolair antibody was covered under our humanization  patents.  Although we
subsequently reached an amicable settlement with  Genentech that is intended  to  resolve such
disagreements, Genentech or other companies may, in the future not enter into or terminate  their
licensing agreements with us, or seek to challenge our U.S.  patents through litigation or patent office
proceedings, such as re-examinations  or interferences. More recently, in March 2007,  the FDA
approved Alexion’s Soliris(cid:3)  (eculizumab) humanized antibody product for marketing and we filed a
lawsuit against Alexion seeking monetary damages  for infringement of certain of certain claims  of  our
Queen patents and other relief. In June  2007, Alexion  filed an answer denying that its Soliris product
infringes  our patents, asserting certain  defenses  and  counterclaiming for non-infringement and
invalidity, and thereafter amended its answer to include  a defense of unenforceability. In July  2007, the
discovery  stage of this litigation began and discovery is ongoing.  We intend to vigorously assert our
rights under the patents-in-suit and defend against Alexion’s counterclaims.  If we  experience  difficulty
in enforcing our patent rights through  licenses, or if our licensees, or prospective licensees, challenge
our  antibody humanization patents, our  revenues and financial condition could be adversely  affected,
and we could be required to undertake additional actions,  including  litigation, to enforce our rights.
Such efforts would increase our expenses  and  could be unsuccessful.

The amount of royalty revenues we receive depends on, among other things, the efforts and successes
of our licensees.

The amount and timing of any royalties we may receive from our licensees will depend, in part, on

the product development and marketing  efforts and successes of our  licensees. Our licensees may  not
successfully complete the product development, regulatory and marketing efforts  required to sell
royalty-bearing products. Competition from other products or  therapies could adversely affect sales of
our  licensees’ products. In addition, even if  a licensee receives regulatory approval to sell a drug  on
which  we would receive royalties, the licensee or a  regulatory agency, such as the  FDA, could terminate
or suspend the marketing of the drug  as a  result of safety or other events. For  example, in February
2005, Biogen Idec and Elan announced that they had voluntarily suspended the marketing and
commercial distribution of the  Tysabri antibody, a drug approved to treat MS and which is licensed
under our humanization patents, because Biogen Idec and Elan  had received reports of cases of
progressive multifocal leukoencephalopathy (PML),  a rare and frequently fatal, demyelinating disease
of the central nervous system, in certain patients treated with Tysabri antibody. In July 2006, Biogen
Idec and Elan reintroduced the Tysabri antibody, however, the Tysabri antibody’s label now includes
prominent warnings regarding the Tysabri antibody’s risks and Biogen Idec and Elan implemented a risk
management plan to inform physicians  and patients of  the benefits and risks  of Tysabri antibody
treatment and to minimize the risk of PML  potentially associated with Tysabri antibody monotherapy.

We must protect our patent and other intellectual property rights to succeed.

Our success is dependent in significant part on  our ability  to develop  and  protect patent and  other

intellectual property rights and operate without  infringing the  intellectual property rights of others.

Our pending patent applications may not result in the  issuance  of valid patents or the  claims  and
claim scope of our issued patents may  not provide  competitive advantages. Also,  our  patent  protection
may not prevent others from developing  competitive products  using related  or other technology  that
does not infringe our patent rights. A  number of  companies,  universities  and research institutions have
filed patent applications or received  patents  in the areas of antibodies and other fields relating  to  our
programs. Some of these applications  or  patents may be competitive with our applications or have
claims that could prevent the issuance of patents  to  us or result in a  significant reduction  in the claim

22

scope of our issued patents. In addition, patent applications  are  confidential for a period of time  after
filing. We therefore may not know that a  competitor  has filed a patent application covering subject
matter similar to subject matter in one of  our  patent  applications or that we  were the  first  to  invent the
innovation we seek to patent. This may lead  to  disputes including interference proceeding or litigation
to determine rights to patentable subject matter.  These disputes are often  expensive and  may result in
our  being unable to patent an innovation.

The scope, enforceability and effective term of patents  can be highly  uncertain  and often involve
complex legal and factual questions and  proceedings. No consistent policy has emerged  regarding the
breadth of claims in biotechnology patents,  so that  even issued patents may later be modified  or
revoked by the relevant patent authorities or courts. These proceedings could be expensive, last several
years and either prevent issuance of  additional patents to us relating to humanization  of antibodies or
result in a significant reduction in the scope or invalidation of our patents. Any limitation in claim
scope could reduce our ability to negotiate  or collect royalties or to negotiate future  collaborative
research and development agreements based  on these patents. Moreover, the issuance of a  patent  in
one country does not assure the issuance of a patent with  similar claim scope in another country,  and
claim interpretation and infringement laws  vary  among  countries, so we are  unable to predict the extent
of patent  protection in any country.

In addition to seeking the protection  of patents and  licenses,  we also rely  upon trade  secrets,
know-how and continuing technological  innovation  that we seek to protect, in part, by confidentiality
agreements with employees, consultants, suppliers and licensees.  If these  agreements are  not  honored,
we might not have adequate remedies  for any  breach. Additionally,  our trade secrets might otherwise
become  known or patented by our competitors.

We may need to obtain patent licenses from others in order to  manufacture  or  sell our potential
products and we may not be able to  obtain these licenses on  terms acceptable to us  or  at all.

Other companies,  universities and research institutions may  obtain  patents that could limit our
ability to use, import, manufacture, market or  sell our products or impair our competitive position. As
a result, we may need to obtain licenses  from others  before  we  could continue using, importing,
manufacturing, marketing, or selling  our products. We may not be able to obtain required licenses on
terms acceptable to us, if at all. If we  do  not obtain required  licenses, we may encounter significant
delays in product development while  we  redesign potentially infringing products or methods or we may
not be able to market our products at  all.

For example, the European Patent Office  (EPO) granted Celltech Therapeutics Limited (Celltech),

which  UCB Group acquired, a patent covering humanized antibodies, which  we have  opposed.  At  an
oral hearing in January 2005, the Opposition Division  of  the European Patent Office  revoked this
patent. Celltech has appealed this decision.  The  appeal was  dismissed by  the Technical Board  of  Appeal
of the European Patent Office at an oral  hearing in  March 2008 and the  patent  remains  revoked. Also,
we do not know whether the EPO will grant  Celltech a patent on a  pending divisional  application  with
claims broad enough to generally cover  humanized antibodies. Celltech  has also  been issued a
corresponding U.S. patent that contains  claims that may be considered broader in scope than its
European patent. In addition, Celltech  was  recently issued a second U.S. patent with claims  that  may
be considered broader than its first U.S.  patent.  We have  entered into an agreement  with Celltech
providing each company with the right to obtain nonexclusive  licenses for up to three antibody targets
under the other company’s humanization patents, which rights may be exercised under the  agreement
through December 2014. Notwithstanding this agreement, if  our humanized antibodies were covered by
Celltech’s European or U.S. patents  and  if  we need more  than the  three licenses under  those patents
currently available to us under the agreement, we would need  to  negotiate additional licenses under
those patents or significantly alter our processes  or products.  We might not be able to successfully alter

23

our  processes or products to avoid conflict with these patents  or  to  obtain the required additional
licenses on commercially reasonable terms, if at all.

In addition, if a Celltech U.S. patent application  conflicts with  our U.S. patents or  patent
applications, we may become involved  in  proceedings to determine  which company  was the first to
invent the products or processes contained  in the conflicting patents. These proceedings could be
expensive, last several years and either  prevent issuance of additional patents to us relating to
humanization of antibodies or result in a significant reduction in the scope or invalidation of our
patents. Any limitation would reduce  our ability to negotiate or collect royalties  or to negotiate future
collaborative research and development agreements based  on these patents.

We  do not have a license to an issued U.S.  patent assigned to Stanford  University and Columbia

University, which may cover a process  we use to produce our potential products. We have been  advised
that an exclusive license has been previously granted  to  a third party, Centocor, under this patent. If
our  processes were found to be covered by  either of these patents,  we might need to obtain licenses or
to significantly alter our processes or products.  We might  not  be  able  to  successfully alter our processes
or products to avoid conflicts with these  patents or to obtain  licenses on acceptable  terms or at all.

We  do not have licenses to issued U.S. patents which may cover  one of our development-stage
products. If we successfully develop this  product,  we might need to obtain licenses to these patents to
commercialize the product. In the event that  we need to obtain licenses to these  patents, we may  not
be able to do so on acceptable terms or at all.

If our collaborations are not successful or  are  terminated  by our partners, we may not effectively
develop and market some of our products.

We  have agreements with pharmaceutical and other companies to develop,  manufacture and
market certain of our potential products.  In  some cases, we rely on our partners  to  manufacture such
products and essential components for those  products, design  and  conduct clinical trials, compile  and
analyze the data received from these  trials, obtain regulatory approvals  and, if approved,  market  these
licensed products. As a result, we may  have limited or no control over the manufacturing,  development
and marketing of these potential products  and little or  no opportunity to  review the clinical data prior
to or following public announcement.  In  addition, the design  of the clinical studies may  not  be
sufficient or appropriate for regulatory review and approval and  we may have  to  conduct further
studies in order to facilitate approval.

In September 2005, we entered into a  collaboration agreement with Biogen Idec under which

Biogen Idec became our partner on the  development of  daclizumab in  certain indications,  including
MS, and volociximab (M200) in all indications. This agreement  is particularly  important  to  us.  The
collaboration agreement provides significant combined resources for  the development,  manufacture and
potential commercialization of covered  products. We and  Biogen Idec each assume certain
responsibilities and share expenses. Because of the  broad  scope of  the collaborations, we are
particularly dependent upon the performance  by  Biogen  Idec of their  obligations under  the agreement.
The failure of Biogen Idec to perform  their obligations, our failure  to  perform our obligations, our
failure to effectively manage the relationship,  or a material contractual dispute  between us and  Biogen
Idec would have a material adverse effect  on our  prospects or financial results. Moreover, our financial
results depend in substantial part upon  our  efforts and related expenses for  these  programs. Our
revenues and expenses recognized under  the  collaboration will  vary  depending  on the  work performed
by us and Biogen Idec in any particular reporting period.

The arrangement with Roche pursuant  to  which we were  co-developing daclizumab for  asthma  and

transplant maintenance was also particularly important to us.  In 2006,  however, Roche decided to first
discontinue its involvement in the co-development  of  daclizumab in treating asthma and then later to

24

discontinue its co-development of daclizumab in  transplant maintenance and terminate the Roche
Co-Development Agreement effective  in May 2007.

We  rely  on other collaborators, such  as clinical  research  organizations, medical institutions and
clinical investigators, including physician  sponsors, to conduct nearly all of our clinical trials, including
recruiting and enrolling patients in the trials.  If these parties  do not successfully carry  out their
contractual duties or meet expected deadlines,  we may be  delayed  or may not obtain regulatory
approval for or commercialize our product candidates.  If any of the third parties upon whom we  rely to
conduct our clinical trials do not comply with applicable laws,  successfully carry  out their obligations or
meet expected deadlines, our clinical trials may be extended, delayed  or  terminated.

If the quality or accuracy of the clinical  data  obtained  by  third  party contractors is compromised
due to their failure to adhere to applicable laws, our clinical protocols or for other reasons, we may not
obtain regulatory approval for or successfully commercialize any of our product  candidates. If  our
relationships with any of these organizations or  individuals  terminates, we believe that we would be
able to enter into arrangements with  alternative third parties. However, replacing  any of these third
parties could delay our clinical trials and  could jeopardize our ability to obtain regulatory  approvals and
commercialize our product candidates on a  timely  basis, if at all.

Our partners can terminate our collaborative agreements  under certain  conditions, and  in some

cases on short notice. A partner may  terminate its agreement with us or separately  pursue alternative
products, therapeutic approaches or technologies as  a means  of  developing  treatments for the diseases
targeted by us, or our collaborative effort. For example, in  August 2006, following a  portfolio  review at
Roche, Roche elected to discontinue its involvement in  the development of daclizumab in treating
asthma and other respiratory diseases  in  accordance with the  terms of the  collaboration  agreement we
had with Roche, and in November 2006, Roche  elected to terminate  the entire  collaboration
agreement. Even if a partner continues  to  contribute to the arrangement, it  may nevertheless decide
not to actively pursue the development  or commercialization of any resulting products. In these
circumstances, our ability to pursue potential  products could be severely  limited.

Continued funding and participation  by partners  will depend  on the continued timely achievement

of our research and development objectives, the retention of key personnel performing work  under
those agreements and on each partner’s own financial, competitive, marketing and strategic  capabilities
and priorities. These considerations include:

(cid:127) the commitment of each partner’s management  to  the continued development of the  licensed

products or technology;

(cid:127) the relationships among the individuals responsible for the implementation and  maintenance of

the development efforts; and

(cid:127) the relative advantages of alternative products  or technology  being marketed or  developed  by
each  partner or by others, including their relative patent and proprietary  technology positions,
and their ability to manufacture potential products  successfully.

Our ability to enter into new relationships and the willingness of our existing  partners  to  continue

development of our potential products depends  upon, among other things,  our patent position with
respect to such products. If we are unable to successfully maintain our patents we  may be unable to
collect royalties on existing licensed products or  enter into additional agreements.

In addition, our collaborative partners may  independently  develop products that are  competitive
with products that we have licensed to  them. This  could  reduce our revenues under  our  agreements
with these partners.

25

If our research and development efforts are  not successful, we may not  be able  to effectively  develop
new products.

We  are engaged in research activities intended to, among other things, identify  antibody  product
candidates that we may progress into  clinical development. These research activities include efforts to
discover and validate new targets for antibodies  in our areas  of  therapeutic focus. We obtain new
targets through our own drug discovery  efforts and  through in-licensing targets from  institutions or
other biotechnology or pharmaceutical companies. Our success in identifying  new antibody product
candidates depends upon our ability  to  discover and  validate new targets, either through our own
research efforts, or through in-licensing or collaborative arrangements.  In order  to  increase the
possibilities of identifying antibodies with  a reasonable chance for  success in  clinical studies, part  of our
business strategy is to identify a higher  number of  potential targets than  we expect to be able to
progress through clinical development.

Our antibody product candidates are in various  stages of development and many  are in an  early
development stage. If we are unsuccessful in our research efforts to identify  and obtain rights to new
targets and generate antibody product candidates  that lead to the required regulatory approvals and  the
successful commercialization of products, our ability  to  develop new products could be harmed.

To supplement our own research efforts,  from time  to  time we may in-license  or otherwise acquire
from others rights to products in-development  or early-stage technology. Acquiring rights to products  in
this  manner poses risks, including because we may not be unable to successfully  integrate the  research,
development and commercialization capabilities necessary to bring these products to market.

The failure to gain market acceptance  of our product candidates among the  medical community  would
adversely affect our revenue.

Even if approved,  our product candidates may not gain market acceptance among physicians,
patients, third-party payers and the medical  community. We may not achieve  market  acceptance  even  if
clinical trials demonstrate safety and  efficacy and we obtain the  necessary  regulatory and
reimbursement approvals. The degree of market acceptance of any product  candidates that we  develop
will depend on a number of factors, including:

(cid:127) establishment and demonstration of clinical efficacy and  safety;

(cid:127) cost-effectiveness of our product candidates;

(cid:127) their potential advantage over alternative treatment methods;

(cid:127) reimbursement policies of government and third-party payers; and

(cid:127) marketing and distribution support  for our product candidates, including  the efforts of our

collaborators where they have marketing  and distribution  responsibilities.

Physicians will not recommend our products until  clinical  data  or  other factors  demonstrate  the

safety and efficacy of our product as compared to conventional  drug and other treatments.  Even if we
establish the clinical safety and efficacy  of our product candidates, physicians may elect not to use our
product  for any number of other reasons,  including whether the mode of  administration of  our
products is effective for certain indications. Antibody products, including  our  product candidates  as
they would be used for certain disease  indications, are typically administered by infusion or injection,
which  requires substantial cost and inconvenience to patients. Our  product candidates, if successfully
developed, may compete with a number  of drugs and therapies that  may be administered more easily.
The failure of our product candidates to achieve significant market acceptance would materially harm
our  business, financial condition and results of operations.

26

The clinical development of drug products is  inherently  uncertain and expensive and subject to
extensive government regulation.

Our future success depends in large  part upon  the success of our  clinical development  efforts.
Clinical development, however, is a lengthy, time-consuming and  expensive process and  subject to
significant risks of failure. In addition,  we must expend  significant amounts  to  comply with extensive
government regulation of the clinical  development  process.

Before obtaining regulatory approvals for  the commercial sale of any products,  we must
demonstrate through preclinical testing  and clinical trials that our product candidates are  safe and
effective for their intended use in humans. We have incurred and  will continue to incur substantial
expense for, and we have devoted and  expect  to  continue to devote a significant amount of time to,
preclinical testing and clinical trials. Despite the time and expense  incurred, our clinical trials may not
adequately demonstrate the safety and effectiveness of our product candidates.

Completion of clinical development generally takes several  years  or  more. The length of time

necessary to complete clinical trials and submit an application for marketing and  manufacturing
approvals varies significantly according  to  the type, complexity and intended use of  the product
candidate and is difficult to predict. Further, we, the FDA, European  Medicines Agency (EMEA),
investigational review boards or data  safety  monitoring boards may decide to temporarily suspend  or
permanently terminate ongoing trials. Failure to comply with  extensive  regulations may result in
unanticipated delay, suspension or cancellation of a trial or the FDA’s or EMEA’s refusal to accept test
results. As a result of these factors, we cannot predict  the actual expenses that we  will incur with
respect to preclinical or clinical trials  for  any of  our  potential products, and we  expect that our expense
levels will fluctuate unexpectedly in the future.  Despite the  time and expense  incurred, we cannot
guarantee that we will successfully develop commercially viable products that will achieve FDA or
EMEA approval or market acceptance,  and failure to do  so would  materially harm our business,
financial condition and results of operations.

Early clinical trials such as phase 1 and 2  trials generally are designed to  gather information  to
determine whether further trials are  appropriate and, if so, how such  trials should  be  designed. As a
result, data gathered in these trials may  indicate  that  the endpoints selected  for these trials are not the
most relevant for purposes of assessing the product or the design  of future trials.  Moreover, success or
failure in meeting such early clinical trial  endpoints  may  not  be  dispositive  of whether further  trials are
appropriate and, if so, how such trials should be designed.  We may decide, or  the FDA may require  us,
to make changes in our plans and protocols. Such changes  may relate, for example, to changes  in the
standard of care for a particular disease  indication, comparability of  efficacy  and toxicity  of potential
drug product where a change in the manufacturing process or manufacturing site is proposed, or
competitive developments foreclosing  the availability of expedited approval procedures. We may be
required to support proposed changes with additional preclinical or clinical testing, which could delay
the expected time line for concluding  clinical trials.

Larger or later stage clinical trials may not produce the same results as earlier  trials. Many
companies  in  the  pharmaceutical  and  biotechnology  industries,  including  our  Company,  have  suffered
significant setbacks in clinical trials, including advanced  clinical trials, even after promising results had
been obtained in earlier trials. For example,  in August 2007, we announced that we  would terminate
the phase 3 program of our  Nuvion(cid:5) (visilizumab) antibody in intravenous steroid-refractory ulcerative
colitis because data from treated patients  showed insufficient efficacy and an inferior safety profile in
the visilizumab arm compared to IV steroids alone.

Even when a drug candidate  shows evidence  of  efficacy in a clinical trial, it  may be impossible to

further develop or receive regulatory  approval for the drug  if it causes an  unacceptable incidence  or
severity of side effects, or further development may be slowed down by the need to find dosing
regimens that do not cause such side effects.

27

In addition, we may not be able to successfully commence and complete all of our planned clinical

trials without significant additional resources and expertise  because we have a relatively large  number
of potential products in clinical development. The approval process  takes  many years, requires the
expenditure of substantial resources,  and  may involve post-marketing surveillance and requirements for
post-marketing studies. The approval of a product  candidate may depend on  the acceptability to the
FDA of data from our clinical trials. Regulatory requirements are subject  to  frequent change. Delays in
obtaining regulatory approvals may:

(cid:127) adversely affect  the successful commercialization of any drugs that we develop;

(cid:127) impose costly procedures on us;

(cid:127) diminish any competitive advantages that we may attain; and

(cid:127) adversely affect  our receipt of revenues  or royalties.

In addition, we may encounter regulatory  delays or failures of our  clinical trials as a result  of  many

factors, all of which may increase the  costs  and expense  associated with  the trial, including:

(cid:127) changes in regulatory policy during the period of product development;

(cid:127) delays in obtaining sufficient supply  of  materials to enroll and complete clinical studies  according

to planned timelines;

(cid:127) delays in obtaining regulatory approvals to commence a study;

(cid:127) delays in identifying and reaching agreement on acceptable  terms with prospective  clinical trial

sites;

(cid:127) delays in the enrollment of patients;

(cid:127) lack of efficacy during clinical trials;  or

(cid:127) unforeseen safety issues.

Regulatory review of our clinical trial protocols may cause us in some cases to delay or abandon
our  planned clinical trials. Our potential inability to commence  or  continue clinical trials, to complete
the clinical trials on a timely basis or to demonstrate the safety and efficacy of  our potential  products,
further adds to the uncertainty of regulatory  approval for our potential products.

The ‘‘fast track’’ designation for development of  any of  our products may not lead to a faster
development or regulatory review or approval  process and it does not  increase the  likelihood the
product will receive regulatory approval.

If a  drug is intended for the treatment of a serious  or life-threatening condition and the drug
demonstrates the potential to address unmet medical needs for  this condition,  the drug sponsor may
apply  for FDA ‘‘fast track’’ designation for  a particular indication. Marketing  applications filed  by
sponsors of products in fast track development may  qualify for priority  review  under the  policies  and
procedures offered by the FDA, but the fast track  designation  does not assure any such  qualification. If
we obtain a fast track designation from  the FDA for any  of our  development stage products, this
designation may not result in a faster  development process,  review or approval compared to drugs
considered for approval under conventional  FDA procedures.  In addition, the FDA may  withdraw any
fast track designation it has granted at  any time which  could delay the approval  process.  In addition,
our  fast track designation does not guarantee that we will  qualify for  or  be  able to take advantage of
the expedited review procedures and  does not increase  the likelihood  that a  product will receive
regulatory approval.

28

We may be unable to enroll a sufficient number of patients  in a timely manner in order to complete
our clinical trials.

The rate of completion of clinical trials is  significantly dependent upon the rate of patient

enrollment. Patient enrollment is a function of many factors, including:

(cid:127) the size of the patient population;

(cid:127) perceived risks and benefits of the  drug under study;

(cid:127) availability of competing therapies, including  those in  clinical  development;

(cid:127) availability of clinical drug supply;

(cid:127) availability of clinical trial sites;

(cid:127) design of the protocol;

(cid:127) proximity of and access by patients  to  clinical sites;

(cid:127) patient referral practices of physicians;

(cid:127) eligibility criteria for the study in question; and

(cid:127) efforts of the sponsor of and clinical sites involved in the trial  to  facilitate timely enrollment.

We  may have difficulty obtaining sufficient patient enrollment  or clinician support to conduct our
clinical trials as planned, and we may  need to expend  substantial additional funds to obtain access  to
resources or delay or modify our plans  significantly. These considerations may  result in  our being
unable to successfully achieve our projected development timelines,  or  potentially even lead us to
consider the termination of ongoing clinical  trials or development  of  a product for  a particular
indication.

We must attract and retain key employees in order to succeed.

To be successful, we must attract and retain qualified clinical, scientific, management and other

personnel and we face significant competition  for  experienced personnel.  If we  are unsuccessful in
attracting and retaining qualified personnel,  particularly at the management  level, our business could be
impaired. The uncertainty caused by  the strategic  review and asset sales  processes and restructuring we
have recently undertaken has created  anxiety  among  our  employees.  We believe  this  has caused
attrition to increase because of employees’ uncertainty regarding the continuation of employment. We
have put in place certain severance and  retention programs in  an effort to mitigate the  number of
voluntary terminations, however, our  programs may  not  provide effective  incentive  to  employees to stay
with us.

The  uncertainly  may  also  make  the  recruitment  of  key  personnel  more  difficult.  We  are  currently
engaged in a  search for a new Chief Executive Officer,  and the  disruption and  uncertainty caused  by
our  restructuring may make such recruitment  more difficult. The failure to recruit a  new Chief
Executive Officer could adversely impact our future performance.

Pursuant to rules adopted under the Sarbanes-Oxley Act of 2002,  we must evaluate  the effectiveness of
our disclosure controls and internal control over financial reporting  on a periodic basis, publicly
disclose the results of these evaluations and publicly disclose  whether we have implemented any
changes in our internal control over  financial reporting that have materially  affected, or are
reasonably likely to materially affect,  our  internal control over financial reporting.

Our management is required to periodically evaluate the effectiveness of  our disclosure  controls
and procedures and our internal control  over financial reporting and our  independent registered  public

29

accounting firm must attest to the effectiveness of  our internal control over financial  reporting as of the
end of each fiscal year. We are also required to disclose in  our periodic  reports with  the SEC any
changes in our internal control over  financial reporting that have  materially affected,  or are reasonably
likely to materially affect, our internal control over  financial  reporting.

Our evaluation of our disclosure controls  and procedures may reveal material weaknesses in our
internal control over financial reporting. If  we identify a  material weakness  we would  be  required to
conclude that our internal control over financial reporting is ineffective and disclose this conclusion,
which  could adversely affect the market price of our common stock. For example, we disclosed  we had
material weaknesses in our quarterly reports on Form  10-Q for the periods ended September  30, 2005,
June 30, 2007 and September 30, 2007 and our annual report on  Form  10-K  for the  year  ended
December 31, 2007.

In addition, the rules governing the standards that must be  met  for management to assess the

effectiveness of our internal control over  financial reporting  are complex  and require  significant
documentation, testing and possible remediation. Compliance with these rules has resulted  in increased
expenses and the devotion of significant  management  resources and we expect that the expenses for
this  process will continue to increase  modestly.

We rely on sole source, third-party contract manufacturers to manufacture  our products.

Assuming we successfully sell our Manufacturing Assets to Genmab, we will  not  have the capability

to manufacture any of our development-stage products.  We have entered  into  a supply agreement  with
Genmab that would become effective upon the closing of  the sale  of our  Manufacturing Assets  to
Genmab, which would have an initial  term of two years. If we experience supply problems with
Genmab, there may not be sufficient supplies  of our development-stage  products for us to meet  clinical
trial demand, in which case our operations and results could  suffer.

Our products must be manufactured  in FDA-approved facilities  and the process for  qualifying and

obtaining approval for a manufacturing facility is  time-consuming. The manufacturing facilities on
which  we rely will be subject to ongoing, periodic unannounced inspection  by  the FDA and state
agencies to ensure compliance with good  manufacturing  practices.

Assuming we successfully sell our Manufacturing Assets to Genmab, if our relationship with
Genmab was to terminate unexpectedly  or on short  notice  or expire without being renewed, our ability
to meet clinical trial demand for our development-stage products could  be adversely  affected while  we
qualify a new manufacturer for that product and  our  operations and  future results  could  suffer. In
addition, we would need to expend significant  amounts to qualify  a  new  manufacturer and transfer
technology from Genmab to the new manufacturer which  would also  adversely affect our results of
operations.

Product supply interruptions, whether  as a result of regulatory  action or the termination  of a

relationship with a manufacturer, could significantly delay  clinical development of our potential
products, reduce third-party or clinical researcher  interest  and support of proposed  clinical trials,  and
possibly delay commercialization and  sales of these products.

Our ability to file for, and to obtain,  regulatory approvals for our  products, as well as  the timing of

such filings, will depend on the abilities of the contract manufacturers we engage. We or our contract
manufacturers may encounter problems with the following:

(cid:127) production yields;

(cid:127) quality control and assurance;

(cid:127) availability of qualified personnel;

30

(cid:127) availability of raw materials;

(cid:127) adequate training of new and existing personnel;

(cid:127) on-going compliance with standard  operating procedures;

(cid:127) on-going compliance with FDA regulations;

(cid:127) production costs; and

(cid:127) development of advanced manufacturing  techniques and process  controls.

Manufacturing changes may result in delays in  obtaining regulatory  approval or marketing for our
products.

If we  make changes in the manufacturing  process, we may be required to demonstrate to the FDA

and corresponding foreign authorities that the  changes have not caused the resulting drug  material  to
differ  significantly from the drug material  previously  produced. Further, any significant manufacturing
changes for the production of our product  candidates could result in delays in development  or
regulatory approval or in the reduction or  interruption of commercial sales of  our product candidates.
Our or our contract manufacturers’ inability  to  maintain manufacturing operations  in compliance  with
applicable regulations within our planned time and cost parameters could materially harm  our  business,
financial condition and results of operations.

We  have made manufacturing changes and are  likely to make additional  manufacturing  changes for

the production of our products currently  in clinical  development. These manufacturing changes  or an
inability to immediately show comparability between the older  material  and  the newer  material  after
making manufacturing changes could  result  in delays  in development or regulatory approvals or in
reduction or interruption of commercial  sales and could impair our  competitive position.

Our business may be harmed if we cannot  obtain sufficient  quantities of  raw materials.

We  depend on outside vendors for the supply  of  raw  materials  used  to  produce our product
candidates for use in clinical trials. Once a  supplier’s materials have been selected for use in the
manufacturing process, the supplier in  effect becomes a sole or limited source of  that  raw material due
to regulatory compliance procedures. If  the  third-party suppliers were to cease production  or otherwise
fail to supply us with quality raw materials and we were unable to contract on acceptable terms for
these services with alternative suppliers, our ability to produce our products  and to conduct preclinical
testing and clinical trials of product candidates would be adversely affected. This  could  impair our
competitive position.

We must comply with extensive government regulations and laws.

We  are subject, directly or through our customers, to extensive regulation by federal government,

state governments, and the foreign countries in which we  conduct  our business.

In particular, we are subject to extensive and rigorous government regulation as a developer of
drug products. For example, the FDA regulates,  among other things,  the development,  testing, research,
manufacture, safety, efficacy, record-keeping,  labeling, storage, approval, quality  control, adverse event
reporting, advertising, promotions, sale  and  distribution of biopharmaceutical products. Our product
candidates and any future products may  also  be  subject to extensive regulation  by  foreign governments.
The regulatory review and approval process, which includes  preclinical studies  and clinical trials of  each
product  candidate, is lengthy, expensive  and  uncertain.

We  must rely on our contract manufacturers and third-party  suppliers for  regulatory compliance

and adhering to the FDA’s current Good Manufacturing Practices  (cGMP)  requirements. If  these

31

manufacturers or suppliers fail to comply  with applicable  regulations,  including FDA pre-or
post-approval inspections and cGMP requirements, then the FDA could sanction us. These sanctions
could include fines, injunctions, civil  penalties,  failure of regulatory authorities to grant  marketing
approval of our products, delay, suspension or withdrawal of  approvals, license revocation, product
seizures or recalls, operational restrictions or  criminal prosecutions,  any of which could significantly and
adversely affect our business.

Laws that may directly or indirectly affect our ability to operate our business include, but  are not

limited, to the following:

(cid:127) the federal Anti-Kickback Law, which prohibits  persons from knowingly and  willfully soliciting,

offering, receiving or providing remuneration, directly or indirectly, in cash  or in kind, to induce
either the referral of an individual, or furnishing  or arranging  for a good or service, for which
payment may be made under federal healthcare programs such as the Medicare and  Medicaid
programs;

(cid:127) the federal False Claims Act, which imposes civil and criminal liability on individuals and entities
who submit, or cause to be submitted,  false or fraudulent claims  for payment to the government;

(cid:127) the federal False Statements Statute, which prohibits  knowingly and willfully falsifying,

concealing or covering up a material fact or making  any materially false statement in connection
with the delivery of or payment for healthcare benefits, items  or services;

(cid:127) the federal Foreign Corrupt Practices Act,  which prohibits  corporations and individuals from

engaging in certain activities to obtain or retain business or to influence a person working in an
official capacity; and

(cid:127) state law equivalents to the Anti-Kickback Law and False Claims Act, which may  not  be  limited

to government reimbursed items.

If our operations are found to violate  any applicable law or  other governmental regulations, we

may be subject to civil and criminal penalties, damages and  fines,  including  exclusion from the
Medicare and Medicaid programs and the curtailment or restructuring  of  our  operations. Similarly,  if
the hospitals, physicians or other providers  or entities with which we do business are  found
non-compliant with applicable laws, they may be subject to sanctions,  which could also have a negative
impact on us. The risk of our being found  in violation of these laws is increased by the  fact that many
of them have not been fully interpreted by the regulatory authorities or the courts,  and their provisions
are open to a variety of interpretations,  and  additional legal  or regulatory change. Any action against
us for violation of these laws, even if we  successfully defend against  it, could cause us to incur
significant legal expenses, divert our management’s attention from the operation  of  our  business  and
damage  our reputation.

We  expend a significant amount on compliance efforts and the expenses have been,  and may  in the
future be unpredictable, and adversely  affect our results.  Changing  laws, regulations and standards may
also create uncertainty and increase insurance costs. We are committed  to  compliance and maintaining
high standards of corporate governance  and  public disclosure.  As a result, we  intend to invest all
reasonably necessary resources to comply  with evolving standards, and this investment may result in
increased general and administrative expenses and a  diversion of management time and  attention from
revenue-generating activities to compliance activities.

32

We may be unable to obtain or maintain regulatory approval for our products.

Even if the FDA grants us marketing  approval  for a  product, the  FDA may impose post-marketing

requirements, such as:

(cid:127) labeling and advertising requirements, restrictions or  limitations,  such as the inclusion of

warnings, precautions, contra-indications or  use limitations that could have a  material  impact  on
the future profitability of our product candidates;

(cid:127) adverse event reporting;

(cid:127) testing and surveillance to monitor our product candidates and their continued  compliance with

regulatory requirements; and

(cid:127) inspection of products and manufacturing  operations and,  if any inspection  reveals that the
product or operation is not in compliance, prohibiting the  sale of all  products, suspending
manufacturing or withdrawing market clearance.

The discovery of previously unknown problems with our  product candidates, including  adverse

events of unanticipated severity or frequency,  may  result in  restrictions  of  the products,  including
withdrawal from manufacture. Additionally, certain  material changes affecting an approved  product
such as manufacturing changes or additional labeling claims  are  subject to further FDA  review and
approval. The FDA may revisit and change its prior determination with  regard to the safety  or efficacy
of our products and withdraw any required approvals after we obtain them.  Even prior to any formal
regulatory action requiring labeling changes or  affecting manufacturing, we could voluntarily decide  to
cease the distribution and sale or recall  any of our future products if  concerns about their safety and
efficacy develop.

As part of the regulatory approval process, we or our contractors must demonstrate the ability to
manufacture the pharmaceutical product to be approved. Accordingly, the manufacturing  process and
quality control procedures are required  to  comply  with the  applicable FDA cGMP regulations  and
other regulatory requirements. Good  manufacturing  practice regulations include requirements  relating
to quality control and quality assurance as  well as  the corresponding maintenance of records and
documentation. Manufacturing facilities  must pass an inspection  by the FDA  before initiating
commercial manufacturing of any product. Pharmaceutical product manufacturing establishments  are
also subject to inspections by state and  local authorities as well as inspections by authorities of other
countries. To supply pharmaceutical products  for  use in  the United  States, foreign  manufacturing
establishments must comply with these FDA approved  guidelines. These  foreign manufacturing
establishments are subject to periodic inspection by  the FDA  or  by corresponding regulatory agencies
in these countries under reciprocal agreements  with the  FDA.  The FDA  enforces post-marketing
regulatory requirements, such as cGMP  requirements, through  periodic unannounced inspections.
Failure to pass an inspection could disrupt,  delay or shut down  our manufacturing operations. We
expect to consummate the sale of our  Manufacturing  Assets and, although we do not have currently
marketed products, the foregoing considerations would be important to our future selection of contract
manufacturers.

Our collaborative partners, licensees and  we also  are subject  to  foreign regulatory  requirements
regarding  the  manufacture,  development,  marketing  and  sale  of  pharmaceutical  products  and,  if  the
particular product is manufactured in  the United States, FDA  and other U.S. export provisions.  These
requirements vary widely in different  countries. Difficulties or  unanticipated costs  or price controls may
be encountered by us or our licensees or  marketing partners in our respective efforts to secure
necessary governmental approvals. This could delay or prevent  us, our  licensees or our marketing
partners from marketing potential pharmaceutical products.

33

Further, regulatory approvals may be withdrawn if we do not comply  with regulatory  standards or

if problems with our products occur.  In  addition, under  a BLA, the  manufacturer continues to be
subject to facility inspection and the  applicant must assume responsibility for compliance  with
applicable pharmaceutical product and establishment standards. If we fail to comply  with applicable
FDA and other regulatory requirements  at any stage during the  regulatory process, we may be subject
to sanctions, including:

(cid:127) delays;

(cid:127) warning letters;

(cid:127) fines;

(cid:127) clinical holds;

(cid:127) product recalls or seizures;

(cid:127) changes to advertising;

(cid:127) injunctions;

(cid:127) refusal of the FDA to review pending  market  approval applications or  supplements  to  approval

applications;

(cid:127) total or partial suspension of product manufacturing, distribution, marketing and sales;

(cid:127) civil penalties;

(cid:127) withdrawals of previously approved  marketing  applications; and

(cid:127) criminal prosecutions.

We may incur significant costs in order  to  comply with environmental regulations  or  to defend claims
arising from accidents involving the  use  of hazardous  materials.

We  are subject to federal, state and local  laws and regulations  governing the use,  discharge,
handling and disposal of materials and wastes  used  in our operations. As  a result, we may be required
to incur significant costs to comply with these  laws and regulations.  We  cannot eliminate the risk of
accidental contamination or injury from  these materials. In the event  of such an accident, we could be
held liable for any resulting damages  and  incur liabilities, which exceed our  resources.  In  addition, we
cannot predict the extent of the adverse effect  on our business or the  financial  and other costs that
might result from any new government requirements arising  out of future legislative, administrative or
judicial actions.

We may be subject to product liability claims,  and our insurance  coverage may not  be adequate  to
cover these claims.

We  face an inherent business risk of exposure to product  liability  claims in the event  that  the use

of products during research and development efforts or  after commercialization results in adverse
effects. This risk exists even with respect  to any products  that receive regulatory approval for
commercial sale. While we maintain liability insurance for our products,  it may not be sufficient to
satisfy any or all liabilities that may arise.  Also, adequate insurance coverage  may not be available  in
the future at acceptable cost, if at all.

34

Increased leverage as a result of our sale of  notes in 2003 and 2005 may harm  our  financial condition
and results of operations.

At December 31, 2007, we had $684.6 million in total  liabilities outstanding, including

$250.0 million in principal that remains  outstanding under  our 2.00% Convertible  Senior Notes  due
February 15, 2012 (the 2005 Notes) and $250.0 million in principal  that remains  outstanding under our
unsecured 2.75% Convertible Subordinated Notes due  2023 (the 2003 Notes).  The 2003 and 2005 Notes
do not restrict our future incurrence  of  indebtedness  and  we may  incur additional indebtedness in the
future. Our level of indebtedness will  significantly affect our  future operations  because:

(cid:127) we will have additional cash requirements in order to support the  payment of interest on  our

outstanding indebtedness;

(cid:127) increases in our outstanding indebtedness and leverage will increase our vulnerability  to  adverse
changes in general economic and industry  conditions, as well  as to competitive pressure;  and

(cid:127) the levels of our outstanding debt could limit our ability to obtain additional financing for

working capital, capital expenditures,  general corporate and other  purposes.

Our ability to make payments of principal and interest on our indebtedness depends upon our
future performance, which will be subject to general economic  conditions,  industry cycles and  financial,
business and other factors affecting our operations,  many of which we cannot control. Our  ability  to
generate sufficient cash flow from operations in the  future to service  our debt may require  us to,
among other things:

(cid:127) seek additional financing in the debt or  equity markets;

(cid:127) refinance or restructure all or a portion of our indebtedness, including the 2005  Notes or  the

2003 Notes;

(cid:127) sell selected assets;

(cid:127) reduce or delay planned capital expenditures; or

(cid:127) reduce or delay planned operating  expenditures,  such as  clinical  trials.

Such measures might not be sufficient to enable  us to service  our debt. In  addition, any such

financing, refinancing or sale of assets  might not be available on economically favorable terms.

We may not have the ability to raise  the  funds to  repurchase  the  2003 Notes on the  repurchase date or
to finance any repurchase offer required  by the indenture.

In August 2010, August 2013 and August 2018, respectively, holders of the  2003 Notes may require

us to repurchase all or a portion of their  2003 Notes at 100% of their principal  amount,  plus any
unpaid  interest. For 2003 Notes to be  repurchased in August 2010, we must pay for the repurchase in
cash, and we may  pay for the repurchase  of  2003 Notes to be repurchased  in August 2013 and August
2018, at our option, in cash, shares of  our common  stock  or a combination  of  cash and shares of our
common stock. In addition, if a repurchase event  occurs (as defined  in the indenture), each holder of
the 2003 Notes may require us to repurchase all or a portion of the  holder’s  2003 Notes. We may  not
have sufficient funds available for any required repurchases of these securities.  In  addition, the  terms of
any agreements related to borrowing  which we may enter  into  from  time  to  time may  prohibit or limit
our  repurchase of 2003 Notes or make  our repurchase of 2003 Notes  an event of default under  certain
circumstances. If a repurchase event  occurs at  a time  when a credit agreement  prohibits us from
purchasing the 2003 Notes, we could  seek the  consent  of  the lender to purchase the  2003 Notes  or
could attempt to refinance the debt covered by the credit agreement.  If we  do not obtain a consent, we
may not repurchase the 2003 Notes. Our  failure  to  repurchase tendered 2003 Notes would constitute an
event of default under the indenture  for the 2003 Notes,  which might also constitute a default under

35

the terms of our other debt, including the  2005 Notes. In  such circumstances, our financial condition
and the value of our securities could  be  materially harmed.

We may not have sufficient cash to purchase the 2005 Notes, if  required,  upon  a fundamental change.

Holders of the 2005 Notes may require us to purchase all  or  any portion of their 2005 Notes upon

a fundamental change, which generally is defined as  the occurrence  of any  of  the following: (1) our
common stock is not traded on a national securities  exchange  or  listed on The Nasdaq Global  Select
Market; (2) any person acquires more than 50% of  the total voting  power  of  all  shares of our capital
stock;  (3) certain mergers, consolidations, sales  or transfers involving us occur; or (4) our Board of
Directors does not consist of continuing directors.  In  certain situations,  holders of the  2005 Notes  will
not have a repurchase right even if a  fundamental change  has occurred.  In addition, we may not have
sufficient cash funds to repurchase the 2005 Notes  upon such  a fundamental change. Although there
are currently no restrictions on our ability to pay  the purchase price, future debt  agreements may
prohibit us from repaying the purchase  price. If we  are prohibited from  repurchasing the 2005 Notes,
we could seek consent from our lenders  at the time to repurchase the 2005  Notes. If we are unable to
obtain their consent, we could attempt to refinance their debt. If  we were unable to obtain consent or
refinance the debt, we would be prohibited from repurchasing the 2005  Notes upon a fundamental
change. If we were unable to purchase the 2005 Notes  upon a fundamental  change,  it would result in
an event of default under the indenture. An event  of  default under the indenture could result in  a
further event of default under our other  then-existing  debt. In addition, the  occurrence of the
fundamental change may be an event  of default under our other debt, which could have a significant
adverse affect on our financial condition.

The conversion of any of the outstanding  2003 Notes  or 2005 Notes into shares of  our common stock
would have a dilutive effect, which could  cause our stock  price to go  down.

The 2003 Notes and 2005 Notes are  convertible, at  the option  of the holder, into shares of our
common stock at varying conversion  prices. We have reserved shares  of  our authorized common stock
for issuance upon conversion of the 2003 Notes and  2005 Notes. If any or all of the  2003 Notes or 2005
Notes are converted into shares of our common stock, our existing stockholders will experience
immediate dilution and our common stock  price may be subject  to  downward pressure. If  any or  all  of
the 2003 Notes or 2005 Notes are not converted into shares of our  common stock before their
respective maturity dates, we will have to pay the holders  of  such notes the full aggregate principal
amount of the 2003 Notes or 2005 Notes,  respectively, then  outstanding. Such payments could have a
material adverse effect on our cash position.

Failure to achieve revenue targets or  raise additional funds  in the future may require us to  reduce the
scope of or eliminate one or more of our  planned  activities.

While we believe we have sufficient funds for our anticipated  operations, we will need to generate

significantly greater revenues to achieve and then maintain profitability on an annual basis.  The product
development, including clinical trials,  manufacturing  and  regulatory approvals of product  candidates
currently in development, and the acquisition and development of additional product  candidates by us
will require a commitment of substantial  funds. Our  future funding requirements, which  may be
significantly greater than we expect, depend  upon many factors, including:

(cid:127) the progress, level and timing of research and development activities related to clinical trials we
are conducting or that are being conducting  in collaboration with our partners, including clinical
trials with respect to daclizumab and volociximab;

(cid:127) the cost and outcomes of regulatory submissions  and reviews;

36

(cid:127) the continuation or termination of  third party manufacturing or sales and marketing

arrangements;

(cid:127) the status of competitive products;

(cid:127) our ability to defend and enforce our intellectual property  rights;  and

(cid:127) our ability to extend the patent protection of our currently marketed products; and

(cid:127) the establishment of additional strategic or licensing  arrangements with other companies, or

acquisitions.

Our  common  stock  price  is  highly  volatile  and  an  investment  in  our  Company  could  decline  in  value.

Market prices for securities of biotechnology companies, including ourselves, have been  highly
volatile, and we expect such volatility  to  continue  for the  foreseeable  future, so that investment in  our
securities involves substantial risk. For example, during the period from January 1,  2007 to
December 31, 2007, our common stock  closed as  high as  $27.70 per share  and as  low as $16.51  per
share. Additionally, the stock market  from  time to time has experienced significant price  and volume
fluctuations unrelated to the operating  performance of particular companies. The following are some of
the factors that may have a significant effect  on the market price of our common stock:

(cid:127) developments or disputes as to patent  or other proprietary rights;

(cid:127) approval or introduction of competing products and  technologies;

(cid:127) disappointing sales of products from which  we receive  royalties or  withdrawal  from the market

of an approved product from which we receive  royalties;

(cid:127) a change in the mix of U.S.-based  Sales and ex-U.S.-based Sales in connection with our  master

patent license agreement with Genentech;

(cid:127) results of clinical trials;

(cid:127) failures or unexpected delays in timelines for our potential products in development, including

the obtaining of regulatory approvals;

(cid:127) delays in manufacturing or clinical trial plans;

(cid:127) fluctuations in our operating results;

(cid:127) market reaction to announcements  by other biotechnology or pharmaceutical companies,

including market reaction to various announcements regarding  products licensed under our
technology;

(cid:127) initiation, termination or modification  of  agreements with  our collaborative  partners  or disputes

or disagreements with collaborative partners;

(cid:127) loss of key personnel;

(cid:127) litigation or the threat of litigation;

(cid:127) public concern as to the safety of drugs  developed by us;

(cid:127) sales of our common stock held by collaborative partners or insiders; and

(cid:127) comments and expectations of results made by securities analysts.

37

If any of these factors causes us to fail to meet the expectations of securities analysts or investors,
or if adverse conditions prevail or are perceived  to  prevail with  respect to our business, the price  of  the
common stock would likely drop significantly. A significant  drop in the price of a company’s  common
stock often leads to the filing of securities  class  action litigation against the company.  This type  of
litigation against us could result in substantial costs and a diversion of management’s  attention  and
resources.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

The following table identifies the location  and general character  of each of our principal facilities

as of  December 31, 2007:

Location

Principal Uses

Fremont, California . . . . . . . . Laboratory and General
Office Space (vacated)

Fremont, California . . . . . . . . General Office Space

Approximate Floor Owned/Lease Expiration

Area (Sq. Ft.)

date

143,000

December  31, 2007

(vacated)

103,000

March 31,  2008

Plymouth, Minnesota . . . . . . . Laboratory and General

Office Space

Brooklyn Park, Minnesota . . . Manufacturing, Laboratory

and General Office Space

Edison, New Jersey . . . . . . . . General Office Space
Paris, France . . . . . . . . . . . . . General Office Space
Redwood City, California . . . . Laboratory and General

Office Space

75,000

214,000
21,000
4,300

450,000

February 2009

Owned
January 2008
August  2013

December 2021

We  began moving our corporate headquarters  to  Redwood City, California in  September 2007  and

completed the move by the end of 2007. In October  2007, we closed on the sale of property  that  we
had owned in Fremont, California, which was part of our former  corporate headquarters and leased
this  property back through the end of 2007. We had  vacated all facilities in  Fremont as of
December 31, 2007, and we do not plan to renew or  extend the remaining leases  for such property, all
of which will have terminated by March  31, 2008. In addition, of  the  75,000 square footage in
Plymouth, Minnesota, we had vacated  approximately 70,000 square  feet  as of December 31,  2007. In
connection with our sale of our Manufacturing Assets, Genmab would  assume our  obligations under
certain of these leases for approximately  30,000 square  feet of the Plymouth, Minnesota space.

In February 2008, we announced the  sale  of our Minnesota manufacturing facility and related
operations to Genmab, for total cash proceeds  of  $240 million. Under the terms  of  this  agreement,
Genmab would acquire our manufacturing  facilities  in Brooklyn  Park,  Minnesota.

In relation to our new Redwood City  premises,  we have  options to extend the terms  of our  leases
for up to ten years to December 2031. We also have a right  of first refusal to lease  space in two  other
buildings on the corporate office campus in which our two  leased  buildings in Redwood City are
located.

In connection with our restructuring  plan  initiated  in an effort to reduce operating costs to a  level

we believe is consistent with a biotechnology  company  focused solely on antibody discovery  and
development, we may sublease excess capacity in the  future.

38

We  own substantially all of the equipment used in  our facilities.  (See Note 11 to the Consolidated

Financial Statements in Part II, Item  8  of  this Annual Report  for additional information.)

ITEM 3. LEGAL PROCEEDINGS

European Patent Oppositions

Two humanization patents based on the  Queen  technology were issued to us by the European
Patent Office, European Patent No. 0 451 216 (the ‘216 Patent) and  European Patent No.  0 682 040
(the ‘040 Patent). Eighteen notices of  opposition to our ‘216 Patent and eight notices of opposition to
our  ‘040  Patent were filed by major pharmaceutical and biotechnology companies, among others,  and
we are currently in two separate opposition proceedings with respect to these  two patents.  Six
opponents, including Genentech, have  withdrawn  from the opposition proceedings  with respect to the
opposition to our ‘216 Patent leaving  12 remaining opponents. A description  of these  two proceedings
is set forth below.

Opposition to ‘216 Patent

In November 2003, in an appeal proceeding of a  prior action of the Opposition Division of the
European Patent Office, the Technical  Board  of Appeal of the European Patent Office  ordered  that
certain claims in our ‘216 Patent be remitted  to  the Opposition Division for  further prosecution and
consideration of issues of patentability (entitlement to priority, novelty,  enablement and inventive  step).
The claims remitted cover the production of humanized antibody  light chains that contain amino acid
substitutions made under our antibody humanization technology.  In April 2007, at an oral proceeding
the Opposition Division upheld claims  that are  virtually  identical  to  the  claims remitted  by  the
Technical Board of Appeal to the Opposition  Division. The opponents in  this opposition have the  right
to appeal this decision of the Opposition Divisions. If any of the opponents appeal  the decision to the
Technical Board of Appeal, the ‘216  Patent would  continue to be enforceable  during the appeal
process. Two notices of appeal have since been filed by Boehringer Ingelheim GmbH  and Celltech
R&D Limited.

Until the opposition is resolved, we may  be  limited  in our ability to collect royalties  or to negotiate

future licensing or collaborative research  and development arrangements based on this and  our other
humanization patents. Moreover, if the  opposition is  eventually  successful, our ability to collect
royalties on European sales of antibodies  humanized  by  others would depend on  the scope and validity
of our ‘040 Patent, which is also being opposed,  whether the antibodies are  manufactured in a country
outside of Europe where they are covered by one of  our patents, and in  that  case the terms  of our
license agreements with respect to that  situation. Also,  if the  Opposition Division rules  against us, that
decision could encourage challenges of  our  related patents in  other  jurisdictions, including the United
States. Such a decision may also lead  some of  our  licensees to stop making royalty payments or lead
potential licensees not to take a license,  either  of  which might  result in us  initiating  formal  legal actions
to enforce our rights under our humanization  patents.  In  such a situation,  a likely  defensive strategy to
our  action would be to challenge our patents  in that jurisdiction. During the  opposition process with
respect to our ‘216 Patent, if we were to commence an  infringement action to enforce  that  patent,  such
an action would likely be stayed until the  opposition  is decided by the European Patent  Office. As a
result, we may not be able to successfully  enforce our rights  under our European or related  U.S.
patents.

Opposition to ‘040 Patent

At an oral hearing in February 2005, the Opposition Division decided to revoke the  claims in our

‘040 Patent. The Opposition Division based its decision on  formal  issues  and did  not  consider
substantive issues of patentability. We  appealed the decision to the Technical Board  of Appeal.  The
appeal suspended  the legal effect of the  decision of the  Opposition Division during  the appeal process.

39

The Technical Board of Appeal has not scheduled  a date  for  the  appeal hearing  with respect to the
‘040 Patent.

We  intend to continue to vigorously  defend  our two European Queen patents in these  two

proceedings. We may not prevail in either of the opposition proceedings or any  litigation  contesting the
validity of these patents. If the outcome of either  of  the opposition proceedings or any litigation
involving our antibody humanization patents were to be unfavorable,  our ability to collect royalties on
existing licensed products and to license  our patents  relating to humanized antibodies may  be  materially
harmed. In addition, these proceedings or  any  other  litigation to protect our intellectual property rights
or defend against infringement claims  by others could result in substantial costs and diversion of
management’s time and attention, which  could  harm our business and financial  condition.

Patent Infringement Suit against Alexion

In March 2007, after the FDA’s market approval of Alexion  Pharmaceuticals, Inc.’s (Alexion)
Soliris(cid:3)  (eculizumab) humanized antibody product, we  filed a lawsuit  against  Alexion  in the United
States District Court for the District of  Delaware for infringement of certain  claims of United  States
Patent Number 5,693,761, United States Patent Number 5,693,762  and United States Patent
Number 6,180,370 (collectively, the patents-in-suit),  which are  three of our antibody humanization
patents, commonly referred to as the Queen patents. We  are seeking monetary damages and other
relief. In June 2007, Alexion filed an  answer denying that its  Soliris  product infringes the
patents-in-suit, asserting certain defenses  and counterclaiming for non-infringement  and invalidity, and
thereafter amended its answer to include  a  defense  of  unenforceability. In July 2007, the  discovery
stage of this litigation began and discovery is ongoing. We intend  to  vigorously  assert  our rights under
the patents-in-suit and defend against Alexion’s counterclaims.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

40

PART II

ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED  STOCKHOLDER

MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock trades on the Nasdaq Global Select Market under the symbol ‘‘PDLI.’’ Prices

indicated below are the high and low  bid prices as reported by the Nasdaq National Market System for
the periods indicated. We have never paid  any cash dividends on  our capital stock. In conjunction with
the announcement of the cessation of the process to sell our Company in  March 2008, we also
announced that we intend to distribute  to  our stockholders at least $500 million of the  initial proceeds
from the sale of the Commercial and  Cardiovascular Assets  and Manufacturing  Assets, pending the
close of all of the transactions, in a form and at a time to be determined. In addition, we announced
that we are actively evaluating several alternative  structures that  would, if completed, result in the
distribution to our stockholders of 50%  or more of the  value of future  antibody humanization royalties
that would be received from currently marketed products.

2007
First Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2006
First Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High

Low

$22.30
27.98
26.71
23.95

$33.30
32.97
19.95
23.29

$18.01
21.26
18.20
15.99

$27.15
16.79
16.39
18.70

As of February 21, 2008, we had approximately 253 common stockholders of  record. Most of our

outstanding shares of common stock  are held of record by  one  stockholder, Cede & Co., a nominee  for
Depository  Trust  Company.  Many  brokers,  banks  and  other  institutions  hold  shares  as  nominees  for
beneficial owners, which deposit these  shares in  participant  accounts at  the Depository  Trust Company.
The actual number of beneficial owners of our stock is likely  significantly  greater  than the number of
stockholders of record, however, we  are  unable  to  reasonably  estimate the  total  number of  beneficial
holders.

41

COMPARISON OF STOCKHOLDER RETURNS

The line graph below compares the cumulative total stockholder return on our common stock
between December 31, 2002 and December 31, 2007 with the cumulative  total return of (i) the Nasdaq
Biotechnology Index and (ii) the Nasdaq Composite Index over  the  same period.  This graph assumes
that $100.00 was invested on January 1,  2002, in our common stock  at the  closing  sale price  for our
common stock on December 31, 2001  and at  the closing sales price for each index  on that date and
that all  dividends were reinvested. No  cash dividends have been  declared on our common  stock.
Stockholder returns over the indicated period should  not be considered indicative of future  stockholder
returns and are not intended to be a  forecast.

$400 

$350 

$300 

$250 

$200 

$150 

$100 

$50 

$0 

2002

2003

2004

2005

2006

2007

PDL BioPharma, Inc.

Nasdaq Biotechnology Index

Nasdaq Composite Index

11MAR200805463246

12/31/2002

12/31/2003

12/31/2004

12/31/2005

12/31/2006

12/31/2007

. . . . . . . . . . .
PDL BioPharma, Inc.
Nasdaq Biotechnology Index . . . . . . .
Nasdaq Composite Index . . . . . . . . .

100
100
100

210.59
145.75
150.01

243.06
154.68
162.89

334.35
159.06
165.13

236.94
160.69
180.85

206.12
168.05
198.60

The information under this heading ‘‘Comparison  of  Stockholder Returns’’ shall  not  be  deemed to

be ‘‘soliciting material’’ or to be ‘‘filed’’ with  the SEC, nor shall such information be incorporated by
reference into any future filing under the  Securities Act of 1933, as amended,  or the Securities
Exchange Act of 1934, as amended, except  to  the extent that we specifically  incorporate it by reference
in such filing.

42

EQUITY COMPENSATION PLAN INFORMATION

The following table sets forth information  regarding all of our  existing equity compensation plans

under which we are authorized to issue  shares of our common  stock  as of December 31, 2007.

Number of securities to be
issued upon exercise of
outstanding options, warrants
and rights
(a)

Weighted-average exercise
price of outstanding options,
warrants and rights
(b)

Number of securities
remaining available  for  future
issuance under equity
compensation plans (excludes
securities  reflect in column(a))
(c)

9,109,014

6,054,933

15,163,947

$19.32

$20.65

$19.85

4,359,096(1)

531,222

4,890,318

Plan category

Equity compensation
plans approved by
security holders . . . . . .

Equity compensation

plans not approved by
security holders(2) . . . .

Total

. . . . . . . . . . . . .

(1)

Includes 523,989 shares of common  stock  available  for  future  issuance  under our  1993 Employee  Stock
Purchase Plan.

(2) See Note 3, ‘‘Stock-Based Compensation,’’  in  the Notes  to  Consolidated  Financial Statements  of  Part  II,

Item 8 of this Annual Report for a description of  our 1999  Nonstatutory  Stock Option  Plan.

43

ITEM 6. SELECTED FINANCIAL  DATA

The following selected consolidated financial information has been  derived from our audited
consolidated financial statements. The information  below is not necessarily indicative of  the results of
future operations and should be read in  conjunction  with Item 7,  ‘‘Management’s Discussion and
Analysis of Financial Condition and Results of Operations,’’  and Item 1A, ‘‘Risk  Factors,’’ of  this
Form 10-K, and the consolidated financial  statements  and related notes thereto  included in  Item 8 of
this  Form 10-K, in order to fully understand  factors that may affect the comparability  of the
information presented below.

CONSOLIDATED STATEMENTS OF  OPERATIONS DATA:

(In thousands, except per share data)

2007

2006

2005

2004

2003

Years Ended December 31,

Revenues:

Royalties . . . . . . . . . . . . . . . . . . . . . . . . . . . $221,088 $ 184,277 $ 130,068 $ 83,807 $ 52,704
13,982
License, collaboration and other . . . . . . . . . .

12,217

28,395

37,837

64,792

Total revenues . . . . . . . . . . . . . . . . . . . . . $258,925 $ 249,069 $ 158,463 $ 96,024 $ 66,686

Research and development expenses . . . . . . . . . $204,175 $ 209,311 $ 156,049 $122,563 $ 82,732
Total operating costs(1) . . . . . . . . . . . . . . . . . . $283,723 $ 263,528 $ 207,148 $154,369 $ 196,338
Interest and other income and interest  expense,

net(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $

5,654 $

4,634 $

(561) $

5,184 $

61

Loss from continuing operations, after income

taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ (19,391) $ (10,766) $ (49,293) $ (53,241) $(129,814)
—
Discontinued  operations, net of income  taxes(3) . $ (1,670) $(119,254) $(117,284) $
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ (21,061) $(130,020) $(166,577) $ (53,241) $(129,814)

— $

Net loss per basic and diluted share from

continuing operations . . . . . . . . . . . . . . . . . . $
Net loss per basic and diluted share . . . . . . . . . $

(0.17) $
(0.18) $

(0.09) $
(1.14) $

(0.47) $
(1.60) $

(0.56) $
(0.56) $

(1.40)
(1.40)

CONSOLIDATED BALANCE SHEET DATA:

(In thousands)

2007

2006

2005

2004

2003

December 31,

Cash, cash equivalents, marketable

securities and restricted investments . . . . $ 440,788 $ 426,285 $ 333,922 $ 397,080 $ 504,993
Working capital . . . . . . . . . . . . . . . . . . . . . $ 598,346 $ 273,433 $ 307,302 $ 356,660 $ 467,248
Assets  held for sale(3) . . . . . . . . . . . . . . . . $ 269,390 $
—
Total assets . . . . . . . . . . . . . . . . . . . . . . . . $1,192,192 $1,141,893 $1,163,154 $ 713,732 $ 742,030
Long-term obligations, less current portion . $ 534,847 $ 536,923 $ 507,294 $ 257,768 $ 258,627
Accumulated deficit . . . . . . . . . . . . . . . . . . $ (591,345) $ (570,129) $ (440,109) $(273,532) $(220,291)
Total stockholders’ equity . . . . . . . . . . . . . . $ 507,610 $ 467,541 $ 526,065 $ 412,510 $ 448,331

— $

— $

— $

(1) In 2007, total costs and expenses included restructuring  charges of $6.7 million and asset
impairment charges of $5.5 million, and in 2006, total costs and expenses included  asset
impairment charges of $0.9 million. In 2005,  total  costs and expenses  included a  $15.8 million
impairment charge relating to a reversion right asset which was acquired  from Roche in 2003.  In
2003, total costs and expenses included $86.0 million in acquired in-process research and
development charges related to the acquisition  of Eos Biotechnology, Inc.  (Eos)  and certain
daclizumab rights from Roche.

44

In addition, total costs and expenses  in 2007 and 2006  included employee stock  based
compensation costs of $20.5 million and $23.4 million, net of tax, respectively, due to our  adoption
of Statement of Financial Accounting Standards No. 123(R), ‘‘Share-Based Payment,’’ on a
modified prospective basis on January 1, 2006.

(2) In 2003, interest and other income and interest expense, net, included  $6.5 million of debt

extinguishment charges related to the redemption of our $150  million 5.50% convertible
subordinated notes in November 2003.

(3) The financial results relating to our Commercial and  Cardiovascular Operations  have been

presented as discontinued operations and the related assets are classified as  ‘‘held for  sale’’ on our
Consolidated Balance Sheet. See Note 6  to  the Consolidated Financial Statements for  further
details.

In addition to the presentation of our  Commercial and  Cardiovascular Operations  as discontinued
operations discussed above, we have  reclassified  previously reported clinical  affairs costs from research
and development to general and administrative to conform to the presentation in the Consolidated
Statement of Operations for the year  ended December 31, 2006.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION  AND

RESULTS OF OPERATIONS

This report includes ‘‘forward-looking statements’’ within  the meaning  of Section 27A  of the
Securities Act of 1933, as amended, and  Section  21E of the Securities  and Exchange Act  of  1934, as
amended. All statements other than statements of historical facts are ‘‘forward looking statements’’ for
purposes of these provisions,  including any projections of  earnings, revenues  or other financial items,
any statements of the plans and objectives of management for future operations,  any statements
concerning proposed new products or licensing or collaborative arrangements, any  statements regarding
future economic conditions or performance, and any statement of assumptions  underlying  any of  the
foregoing. In some cases, forward-looking statements can  be  identified by the use  of terminology such
as ‘‘may,’’ ‘‘will,’’ ‘‘expects,’’ ‘‘plans,’’  ‘‘anticipates,’’ ‘‘estimates,’’ ‘‘potential,’’  or ‘‘continue’’ or  the
negative thereof or other comparable terminology.  Although we believe  that  the expectations reflected
in the  forward-looking statements contained  in this report are reasonable,  there can  be  no assurance
that such expectations or any of the  forward-looking statements  will prove  to  be  correct, and actual
results could differ materially from those projected or assumed in  the forward-looking statements. Our
future financial condition and results of operations, as  well  as any  forward-looking statements,  are
subject  to inherent risks and uncertainties, including but not limited to the  risk factors set forth below,
and  for the reasons described elsewhere  in this report. All  forward-looking statements and reasons why
results may differ included in  this report are made as of  the date hereof, and we  assume no obligation
to update these forward-looking statements  or  reasons why actual results  might differ.

OVERVIEW

We are a biopharmaceutical company  focused on  the discovery and development of novel
antibodies in oncology and immunologic  diseases. We receive royalties and other  revenues through
licensing agreements with numerous biotechnology and pharmaceutical companies  based on  our
proprietary antibody humanization technology platform. These licensing agreements have contributed to
the development by our licensees of nine  marketed products. We  currently have several  investigational
compounds in clinical development for severe  or life-threatening diseases, two of which  we are
developing in collaboration with Biogen Idec MA, Inc. (Biogen  Idec).  Our research platform is  focused
on the discovery of novel antibodies for  the treatment of cancer  and immunologic diseases.

During the period from March 2005  through March 2008,  we marketed  and sold  acute-care
products in the hospital setting in the  United States and  Canada.  We acquired three of  these products,

45

Cardene IV, Retavase and IV Busulfex, which are small-molecule-based products, in connection with  our
acquisitions of ESP Pharma, Inc. and  the  rights to Retavase in March 2005. We acquired the rights  to
Cardene SR in September 2007. As discussed below, these products and  the related operations were
fully divested during the first quarter  of 2008.

On August 28, 2007, in connection with a months-long  evaluation of strategic alternatives that our
management and Board of Directors  conducted, we  announced our intent to sell  our Commercial and
Cardiovascular Assets, which were comprised of  our Cardene, Retavase and IV Busulfex commercial
products and our ularitide development-stage cardiovascular  product (together, the Commercial  and
Cardiovascular Assets). The decision  to  pursue a sale of these assets was related to a significant
strategic change to focus the Company  on  the discovery and  development of novel antibodies in
oncology and immunologic diseases.  Given the change  in our  strategic direction and the current  timing
of our pipeline products, we determined that our commercial products  and cardiovascular development
programs, which are not antibody-based products, were no longer a strategic fit. We subsequently
announced on October 1, 2007 that we were  seeking  the sale of  our entire  Company or of  our key
assets, which decision was in connection  with our ongoing evaluation of strategic alternatives and
objective of maximizing stockholder value.

In December 2007, we entered into an  asset purchase agreement with  Otsuka

Pharmaceutical Co., Ltd. (Otsuka) under  which we  agreed  to  sell  the  rights to IV Busulfex (cid:5), including
trademarks, patents, intellectual property and related assets, for $200  million in cash,  plus additional
consideration for the sale of our IV  Busulfex inventories, all to be paid at closing. In addition, in
February 2008, we entered into an asset purchase agreement with EKR Therapeutics,  Inc. (EKR) for
the sale of our Cardene and Retavase commercial products, as well as for ularitide,  our development-
stage product (together, the Cardiovascular Assets). The  consideration for the Cardiovascular Assets,
which  includes all trademarks, patents,  intellectual  property, inventories and related assets,  consisted of
an upfront payment of $85 million, up  to  $85 million in development and sales milestone payments, as
well as royalties on certain future  Cardene and ularitide product sales. In March 2008,  we closed these
transactions, completing the sale of the Commercial  and  Cardiovascular Assets.

We  did not recognize any asset impairment  charges related  to  the Commercial and Cardiovascular
Assets  as  of December 31, 2007, since  their respective fair values exceeded their carrying values at this
date.  Our assessment of the fair value of  the Commercial and Cardiovascular Assets included  a
probability-weighted and discounted measurement of  the contingent consideration, which relates to
future milestones and royalties under  the  terms  of  the sale  of  the Cardiovascular Assets. However, as
we will not be recognizing the contingent  consideration until the milestones and  royalties are earned,
we  expect  to  recognize  a  loss  of  approximately  $65  million  effective  upon  the  sales  of  the  Commercial
and Cardiovascular Assets in March 2008.

In February 2008, we entered into an asset  purchase agreement  with GMN, Inc. (Genmab), a
wholly owned subsidiary of Genmab  A/S,  for the sale  of our Minnesota manufacturing facility and
related operations for $240 million. Under the terms of this agreement, Genmab  would acquire our
manufacturing and related administrative facilities  in  Brooklyn Park, Minnesota, and all assets therein,
as well as certain of our lease obligations related to our  facilities in  Plymouth, Minnesota (together, the
Manufacturing Assets). In addition, Genmab plans  to  retain the approximately 170  employees currently
working at the manufacturing facility.  In  connection  with this transaction, Genmab would produce
clinical material to supply certain of our  pipeline products  for our  investigational studies  under a
clinical supply agreement. We expect to close this transaction during the first quarter of 2008, and
expect to recognize a gain of  approximately $50 million at  that time.

In March 2008, we announced that we had  ended the sale process for the Company  or our
biotechnology discovery and development assets  and  that we would  focus on the discovery and
development of innovative new antibodies  for cancer and immunologic diseases. While we had actively

46

pursued  a sale of the entire Company  or  our key assets since  we  announced our intent to do  so in
October 2007, we had not received any firm offers for the Company as  a whole or for our
biotechnology assets.

We  also announced in March 2008 that we intend  to  distribute to our stockholders at least
$500 million of the initial proceeds from the sale of the Commercial and  Cardiovascular  Assets and
Manufacturing Assets, pending the close  of all  of  the transactions,  in a form and at a time yet  to  be
determined. In addition, we announced that we  are actively evaluating several alternative structures
that, if completed, would result in the distribution to our stockholders of 50  percent or more of  the
value of future antibody humanization royalties that  would  be  received from currently marketed
products, net of any applicable corporate-level taxes. We are carefully evaluating numerous factors,
including tax implications, structural  considerations, and market  conditions,  in order to select the
alternative that would maximize the value  of the humanization royalties for our stockholders. The
structures being evaluated include, among  others, a sale of the right to receive future royalties, a
securitization of future royalties or a distribution to stockholders of securities related  to  the royalty
stream.

In an effort to reduce operating costs  to a level more consistent  with a biotechnology company

focused solely on antibody discovery and  development, in March  2008 we  commenced  a restructuring
effort pursuant to which we intend to  eliminate approximately 250 employment positions over
approximately one year and undertake other  substantial cost  cutting measures. This reduction is in
addition  to  previously  planned  reductions  of  approximately  335  positions  resulting  from  the  sales  of  the
Commercial and Cardiovascular Assets and Manufacturing Assets.  Subsequent to the transition period,
we expect that our workforce will consist  of  approximately  300 employees. We anticipate a transition
period of approximately 12 months before planned expense reductions and transition services related to
the Commercial and Cardiovascular  Assets  and Manufacturing Assets sales transactions are fully
implemented or completed. We have offered retention bonuses and  other incentives to the transition
employees, as well as to the employees that we  expect to retain after the restructuring, to encourage
these employees to stay with the Company.  In connection with  this  restructuring  effort, we expect to
incur significant transition-related expenses over  the next 12-month period, a portion of which would be
recorded  as restructuring charges.

We  were organized as a Delaware corporation in 1986  under the name  Protein Design Labs, Inc.

In 2006, we changed our name to PDL BioPharma, Inc.

SUMMARY OF 2007 FINANCIAL RESULTS

During  the fourth quarter of 2007, based on  the significant  interest in and  the offers we received

for our  Commercial and Cardiovascular  Assets, we elected  to  proceed with the sale of these assets
separate from the sale of the entire Company. As  a result, in accordance with  the applicable accounting
guidance, we classified our Commercial  and Cardiovascular Assets,  including product rights  intangible
assets and related fixed assets, as ‘‘held  for sale’’ on the Consolidated Balance Sheet. In addition, since
we expect to have no significant or direct  involvement  in the future operations related to these assets
after the closing date of the sales in March 2008,  the results  of  the Commercial and Cardiovascular
Operations segment, which was comprised almost entirely of  those operations related  to  the
Commercial and Cardiovascular Assets, have been presented as discontinued operations for all periods
presented. Discontinued operations are reported as a separate component within  the Consolidated
Statement of Operations outside of income (loss) from continuing operations. As a result,  we no longer
report net product sales, cost of product  sales, or selling and marketing  expenses, all of  which related
to the Commercial and Cardiovascular  Operations, separately in the  Consolidated Statements of
Operations.

47

Our total revenues from continuing operations  for 2007 were  $258.9 million, a 4%  increase from

$249.1 million in 2006. This revenue  growth  was driven by  increases in royalties from our licensees and
was partially offset by a decrease in license, collaboration and other revenues. Of the  total  revenues
from continuing operations that we generated in  2007, 85% were from royalty payments  we received
and 15% were from license, collaboration and other revenues, compared to 74%  and 26%,  respectively,
in 2006. During 2007, royalty revenues from our antibody humanization technology licenses grew 20%
from the previous year, which reflects the growing importance of antibody  therapeutics in the  treatment
of diverse diseases, such as cancer, viral  infections, asthma and eye disorders. During the  year ended
December 31, 2007, we received royalties  on eight marketed products, with approximately 90% of  our
royalty revenues derived from the Herceptin, Avastin and Lucentis antibody products marketed by
Genentech and the Synagis antibody product marketed by MedImmune. The decrease in license,
collaboration and other revenues was principally due to the  recognition of  $20.5 million in 2006  as a
result of the discontinuation of our co-development  collaborations with  Roche for daclizumab in the
asthma transplant maintenance indications and a decrease  in revenue recognized  from our
collaboration with Biogen Idec.

Our total costs and expenses related to continuing operations in  2007 were $283.7 million, an
increase of $20.2 million from 2006. This  increase  was  primarily  driven from  restructuring and  idle
facility charges of  $6.7 million as well  as  asset impairment  charges of  $5.5 million that we  recognized
during 2007, and higher legal and consulting expenses related to the efforts to sell  the Company and
our  key assets during the year.

Our net  loss for 2007 was $21.1 million, compared to $130.0 million  in 2006. Of these amounts, net

losses of $19.4 million and $10.8 million for 2007  and 2006, respectively, were attributable to our
continuing operations. Net cash provided  by operating activities in 2007 was  $67.0 million compared to
$78.8 million in 2006. At December 31, 2007, we had  cash, cash equivalents, marketable securities and
restricted cash and investments of $440.8  million, compared  to  $426.3 million at  December 31, 2006. In
2007, we incurred capital expenditures  of $94.7  million,  principally related  to  the development and
construction of our new corporate headquarters, an  increase from $36.5  million  in 2006. As of
December 31, 2007, we had $684.6 million in total liabilities outstanding, which  included $500.0  million
in convertible notes, $250.0 million of  which are callable  at  our option in each  of  2008 and 2010 and
due in 2023 and 2012, respectively.

RECENT DEVELOPMENTS

In addition to our announcements in the  second  half  of  2007 and  on  March 4, 2008 related to our

intent to solicit offers for our Commercial and  Cardiovascular Assets  as well as  the potential future
sale of our entire Company or of its  key assets, and the termination of that  process and our related
restructuring plans, the events noted  below affected our financial results  and operations during 2007
and early 2008 or otherwise affected our  business prospects:

(cid:127) In  August 2007, we announced our termination of the Nuvion phase 3 development program in
intravenous steroid-refractory ulcerative colitis  due to insufficient efficacy  and an  inferior safety
profile in the Nuvion arm compared to IV steroids.

(cid:127) In  September 2007, the Board of Directors formally approved a workforce reduction related to

our  manufacturing operations. In early October 2007,  we notified the 104 individuals affected by
this  workforce reduction, and all impacted  employees were provided 60 days advance notice  of
the date their employment would terminate.  We recognized an aggregate of $3.6 million in
restructuring charges during 2007 related to this reduction  in force.

(cid:127) In  October 2007, we completed the sale of two buildings  that comprised part of our prior

corporate headquarters in Fremont, California for  $13.2 million in net  proceeds.

(cid:127) In  November 2007, we received a  $5 million milestone payment from Biogen  Idec upon  the

datalock of the current phase 2 trial of  daclizumab  in  multiple sclerosis.

48

(cid:127) In  the fourth quarter of 2007, we completed the move of our corporate headquarters from

Fremont, California to Redwood City, California.  During  the year, we incurred $94.7 million in
total capital expenditures which principally related  to  the development and construction  of the
new headquarters.

(cid:127) In  December 2007, we announced the agreement  to  sell the  rights to Busulfex  and, in February
2008, we announced the agreements to sell  the Cardiovascular Assets and the  Manufacturing
Assets.

(cid:127) In  March 2008, we announced the closing of the sales of the  Commercial and  Cardiovascular

Assets and announced the cost reduction and  other operational and  strategic decisions described
above.

ECONOMIC AND INDUSTRY-WIDE  FACTORS

Various economic and industry-wide factors  are relevant to us and could  affect our business,

including the factors set forth below.

(cid:127) Our business will depend in significant part on  our  ability to successfully develop innovative new
drugs. Drug development, however, is highly uncertain and very expensive, typically  requiring
tens to hundreds of millions invested in  research, development and  manufacturing  elements.
Identifying drug candidates to study in clinical trials requires significant  investment and  may take
several years. In addition, the clinical trial process for drug candidates is usually lengthy,
expensive and subject to high rates of  failure throughout  the development process. As  a result, a
majority of the clinical trial programs for drug candidates are terminated prior to applying for
regulatory approval. Even if a drug receives FDA or other  regulatory approval, such approval
could be conditioned on the need to  conduct additional trials, or we could be required to or
voluntarily decide to suspend marketing of a drug as a result of safety or  other events.

(cid:127) Our industry is subject to extensive government regulation, and we must make significant

expenditures to comply with these regulations.  For example, the FDA regulates, among other
things, the development, testing, research, manufacture, safety, efficacy, record-keeping, labeling,
storage, approval, quality control, adverse event reporting,  advertising,  promotions, sale  and
distribution of our products. The development of  our products outside  of the United  States is
subject to similar extensive regulation by foreign governments, which  regulations are  not
harmonized with the regulations of the United States.

(cid:127) The manufacture of antibodies for use as therapeutics  in compliance  with regulatory

requirements is complex, time-consuming  and expensive. If  these products or  product candidates
are not manufactured in accordance  with FDA and European good  manufacturing practices, we
may not be able to obtain regulatory approval for our  products.  Given the pending sale of our
Manufacturing Assets to Genmab, which  we expect to close in the first quarter of 2008,  we do
not have either facilities or resources to manufacture  our potential products. Accordingly,  we
will  be  completely  reliant  on  third-party  manufacturers  for  the  supply  of  all  of  our  development
products.

(cid:127) Our business success is dependent in significant part  on our  success in establishing  intellectual
property rights, either internally or through  in-license of third-party  intellectual property  rights,
and protecting our intellectual property  rights. If we are unable to protect  our intellectual
property, we may not be able to compete successfully  and our sales and royalty revenues and
operating results would be adversely affected. Our pending  patent  applications may not result  in
the issuance of valid patents or our issued  patents may not provide competitive advantages or
may be reduced in scope. Proceedings to our  protect intellectual  property rights  are expensive,

49

can, and have, continued over many  years and could result in  a significant  reduction in  the scope
or invalidation of our patents, which  could  adversely affect  our results of operations.

(cid:127) To be successful, we must retain qualified clinical, scientific, marketing,  administrative and

management personnel. We face significant competition  for experienced  personnel  and have
experienced significant attrition in late  2007 and early  2008 as a result of the  uncertainty created
by the strategic initiatives we undertook during this period. We  also implemented a restructuring
in March 2008, which includes a significant reduction in force,  and  we expect to continue to face
challenges in retaining qualified personnel as  we transition  to  a  more streamlined organization.

See also Item 1A ‘‘Risk Factors’’ of this Annual Report for additional  information  on these
economic and industry-wide and other  factors and the impact they could have on our  business  and
results of operations.

CRITICAL ACCOUNTING POLICIES AND THE USE OF ESTIMATES

The preparation of our financial statements  in conformity with  accounting principles generally
accepted in the United States requires  management to make estimates and  assumptions that affect the
amounts reported in our financial statements  and accompanying notes. Actual results  could  differ
materially from those estimates. The items in our financial statements requiring significant  estimates
and judgments are as follows:

Valuation and Impairment of Long-Lived Assets and Goodwill

We  test long-lived assets with definite useful  lives and goodwill for impairment. During  the fourth

quarter of 2007, our Commercial and Cardiovascular  Assets were classified as  ‘‘held for  sale’’ and, as
such, we were required to report these  assets at  the lower of their respective carrying amounts or  fair
values less costs to sell. The carrying value of  the Commercial and Cardiovascular Assets was
approximately $269.4 million as of December 31, 2007. In  addition,  the $81.7 million goodwill balance
on our Consolidated Balance Sheet relates entirely to our  Commercial and  Cardiovascular  Operations
reporting unit. Our estimates of the fair value  of the Commercial  and  Cardiovascular Assets were
based upon executed agreements for the  sale of the related assets.  For the  IV Busulfex assets, our
estimate of fair value was based on the purchase price of $200 million, and for  the Cardiovascular
Assets, our estimate of fair value was  based on the up-front fee  of $85 million, a  probability-weighted
and discounted estimate of the fair value of the contingent milestones and a  probability-weighted  and
discounted estimate of the fair value of the  future royalties. Based upon our analysis, as of
December 31, 2007, the estimated fair value of  the Commercial  and Cardiovascular  Assets exceeded
the carrying value of the assets, including the  related goodwill. Therefore, we  didn’t recognize  any asset
impairment charges for our Commercial  and Cardiovascular Assets.

Although we did not recognize any asset impairment charges  related  to  the assets within our
Commercial and Cardiovascular Operations reporting unit as  of December 31, 2007, we expect  to
recognize a loss of approximately $65 million  in connection with  the completion of the sales of the
Commercial and Cardiovascular Assets. This loss is  related  to  the treatment  of the contingent
consideration that we may receive in the  future in connection with the  sale of  the Cardiovascular
Assets. We have included such contingent  consideration in our fair  value  estimate as  of  December 31,
2007, as discussed above, but we will not  record the contingent consideration until  such time that
milestones and/or royalties are earned.

Revenue Recognition

We  enter into patent license, collaboration and humanization agreements  that  may contain

multiple elements, such as upfront license  fees, reimbursement of research and development  expenses,
milestones related to the achievement  of particular  stages in product development and  royalties. Under

50

our  collaboration arrangements, we may  receive  nonrefundable  upfront fees, time-based  licensing fees
and reimbursement for all or a portion  of certain predefined research and  development or
post-commercialization expenses, and our licensees  may  make  milestone payments to us when  they or
we achieve certain levels of development  with  respect to the licensed technology. Generally, when  there
is more than one deliverable under the  agreement, we account for the revenue as a single unit  of
accounting under Emerging Issues Task  Force Issue  No.  00-21, ‘‘Revenue Arrangement with Multiple
Deliverables,’’ for revenue recognition purposes.  As a combined unit  of accounting, the up-front
payments are recognized ratably as the underlying services are provided under  the arrangement. We
recognize ‘‘at-risk’’ milestone payments upon  achievement of  the  underlying  milestone event and when
they are due and payable under the arrangement.  Milestones are deemed to be ‘‘at risk’’  when, at the
onset of an arrangement, management  believes that they will require a  reasonable  amount  of effort to
be achieved and are not simply reached by the lapse  of  time  or  perfunctory effort. In the fourth
quarter of 2007, we recognized an at-risk $5 million milestone payment from Biogen Idec  that  was
earned upon the datalock of the current phase 2 trial of the daclizumab  product in  multiple sclerosis.
We  currently determine attribution methods for each  payment stream based on  the specific  facts and
circumstances of the arrangement. The Emerging Issues Task Force may  provide  additional guidance on
the topic of ‘‘Revenue Recognition for a  Single Deliverable for a  Single  Unit Accounting  (with Multiple
Deliverables) That Have Multiple Payment Streams,’’  which could change  our method of revenue
recognition in future periods.

In addition, we occasionally enter into non-monetary  transactions in connection with our patent
licensing arrangements. Management must use estimates  and judgments when  considering the  fair value
of the technology rights acquired and the  patent licenses granted under these  arrangements. When
available, the fair value of the non-monetary transaction is based on vendor-specific objective  evidence
of fair value of each significant element of the patent license agreement. Otherwise,  management uses
other methods of estimating fair value,  such  as current  pricing information available to us. Therefore,
the fair value of the technology right(s)  acquired from the  licensee  is typically based on  the fair value
of the patent license and other consideration we exchange with the  licensee.

Clinical Trial Expenses

We  base our cost accruals for clinical trials on estimates of the services  received and efforts
expended pursuant to contracts with numerous clinical trial centers and clinical research organizations
(CROs). In the normal course of business, we  contract with third parties to perform various clinical
trial activities in the ongoing development of potential  drugs. The financial terms  of these  agreements
vary from contract to contract, are subject to negotiation  and  may  result in uneven payment  flows.
Payments under the contracts depend  on factors such as the achievement  of certain events, the
successful accrual of patients or the completion of portions of the clinical trial or similar  conditions.
The objective of our accrual policy is to match the recording of expenses in  our financial statements to
the actual services received and efforts  expended. As such, we recognize direct  expenses related to each
patient enrolled in a clinical trial on  an estimated cost-per-patient basis as services are  performed. In
addition to considering information from our  clinical operations group regarding the status of our
clinical trials, we rely on information from CROs, such as estimated costs  per  patient,  to  calculate our
accrual  for direct clinical expenses at the  end of each reporting period. For indirect  expenses, which
relate to site and other administrative costs to manage our  clinical  trials,  we rely on information
provided by the CRO, including costs incurred  by the  CRO as of a particular reporting date,  to
calculate our indirect clinical expenses. In  the event of  early termination of a  clinical trial,  we accrue
and recognize expenses in an amount  based on our estimate of the remaining non-cancelable
obligations associated with the winding down  of the clinical trial, which we confirm directly with  the
CRO.

51

If our CROs were to either under or over report the costs that they have incurred or if there is a
change in the estimated per patient costs,  it could  have an  impact on our clinical trial expenses  during
the period in which they report a change in  estimated  costs to us. Adjustments to our clinical trial
accruals primarily relate to indirect costs,  for which  we place  significant  reliance  on our CROs for
accurate information at the end of each reporting period.  Based  upon the  magnitude of  our historical
adjustments, we believe that it is reasonably possible that a  change in estimate related to our clinical
accruals could be approximately 1% of  our annual  research and development expenses.

Employee Stock-Based Compensation

Under the provisions of SFAS No. 123(R), ‘‘Stock-Based Compensation’’  (SFAS  No. 123(R)), we

estimate the fair value of our employee stock  awards  at the  date of grant using the Black-Scholes
option-pricing model, which requires  the use of  certain subjective assumptions. The most  significant of
these assumptions are our estimates of  the expected volatility of  the market price of our stock and the
expected term of the award. When establishing an estimate of the expected term of an  award,  we
consider the vesting period for the award, our  recent historical  experience of  employee stock option
exercises (including forfeitures), the expected volatility, and a comparison to relevant  peer group data.
As required under the accounting rules, we review our valuation assumptions at  each grant date  and, as
a result, our valuation assumptions used  to value employee stock-based awards granted  in future
periods may change.

Further, SFAS No. 123(R) requires that employee  stock-based compensation  costs be recognized

over the requisite service period, or the vesting  period, in a manner similar to all other forms of
compensation paid to employees. The allocation of employee stock-based compensation  costs to each
operating expense line are estimated based on specific  employee headcount information  at each grant
date  and estimated stock option forfeiture rates and revised, if necessary, in future periods  if  actual
employee headcount information or  forfeitures differ  materially from those estimates.  As a  result, the
amount of employee stock-based compensation costs  we recognize  in each operating expense category
in future periods may differ significantly  from what we  have recorded in  the current period. For the
fourth quarter of 2007, we estimated our  future  forfeiture rate to be approximately 10%,  which is  based
on historical forfeiture rates adjusted for certain one-time events and  the  impact  of more recent trends
on our future forfeitures. A three percentage  point change in the rate of  estimated stock option
forfeitures could result in an increase or  decrease to stock-based compensation expense  of
approximately $1.0 million.

RESULTS OF OPERATIONS

Years ended December 31, 2007, 2006  and 2005

(In thousands)

Revenues*

Years Ended December 31,

Annual Percent Change

2007

2006

2005

2007/2006

2006/2005

Royalties . . . . . . . . . . . . . . . . . . . . . . . . .
License, collaboration and other . . . . . . . .

$221,088
37,837

$184,277
64,792

$130,068
28,395

Total revenues . . . . . . . . . . . . . . . . . . .

$258,925

$249,069

$158,463

20%
(42)%

4%

42%
128%

57%

* Net product sales have been presented as  Discontinued  Operations for all periods presented. 

52

Royalties

Royalties from licensed product sales  exceeding more than 10% of our  total  royalty revenues  are

set forth below (by licensee and product, as  a percentage  of total royalty revenue):

Licensee

Product Name

2007

2006

2005

Years Ended December 31,

Genentech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Avastin

Herceptin

MedImmune . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Synagis

26%
38%

16%

29%
42%

18%

24%
34%

25%

Royalty revenues increased by $36.8  million, or 20%,  in the year ended December 31,  2007, from

the comparable period in 2006. This increase  primarily was  due to higher reported product sales of
Herceptin, Lucentis, and Avastin, which are marketed by Genentech, as well as the introduction of
Tysabri royalties again in 2007, and was offset partially by an approximate 30% decrease  in ex-U.S.-
based Sales (as defined below) as a percentage of total  ex-U.S.  sales  of Herceptin and a decrease in the
effective average royalty rate earned on  sales reported by  Genentech as  a result of  the tiered  fee
structure under our license agreement with Genentech. In 2006, royalty revenues  increased by
$54.2 million, or 42%, from 2005 primarily due to higher reported  product sales of the Avastin and
Herceptin antibodies. This increase was offset partially by the elimination of royalties from product sales
of the Zenapax antibody, which is marketed by Roche, beginning in the second  quarter of 2006, as a
result of the Second Amended and Restated Worldwide Agreement with Roche executed at  that  time.

Under most of the agreements for the license of rights under our humanization patents, we  receive

a flat-rate royalty based upon our licensees’ net sales of covered  products.  Royalty  payments are
generally due one quarter in arrears;  that is, generally in  the second month of  the quarter after the
licensee has sold the royalty-bearing  product. As noted above, however,  our master  patent  license
agreement with Genentech provides for  a tiered  royalty structure under which the royalty  rate
Genentech must pay on royalty-bearing products sold in the  United States or  manufactured in  the
United States and sold anywhere (U.S.-based  Sales) in a given  calendar year  decreases during that year
on incremental U.S.-based Sales above several net sales thresholds. As a result, Genentech’s average
annual royalty rate during a year declines as  Genentech’s cumulative U.S.-based  Sales increase during
that year. Because we receive royalties in arrears,  the average royalty rate  for the  payments we receive
from Genentech in the second calendar  quarter—which would be for Genentech’s sales from the first
calendar quarter—is higher than the average royalty rate for following quarters. The average royalty
rate for payments we receive from Genentech is lowest in the  first calendar  quarter,  which would  be
for Genentech’s sales from the fourth  calendar quarter, when  more of Genentech’s U.S.-based  Sales
bear royalties at lower royalty rates. With respect to royalty-bearing products  that  are both
manufactured and sold outside of the United States (ex-U.S.-based Sales), the  royalty rate that we
receive from Genentech is a fixed rate based on a percentage of the underlying ex-U.S.-based Sales.
The mix of U.S.-based Sales and ex-U.S.-based Sales has fluctuated  in the  past and  may continue to
fluctuate in future periods.

License, Collaboration and Other Revenues

(In thousands)

Years Ended December 31,

Annual Percent Change

2007

2006

2005

2007/2006

2006/2005

License and milestones from collaborations . . . .
R&D services from collaborations . . . . . . . . . . .
License and other . . . . . . . . . . . . . . . . . . . . . . .

$18,397
13,555
5,885

$29,764
29,093
5,935

$ 9,395
10,607
8,393

(38)%
(53)%
(1)%

217%
174%
(29)%

Total revenue from license, collaboration and

other revenues . . . . . . . . . . . . . . . . . . . . . .

$37,837

$64,792

$28,395

(42)%

128%

53

Total license, collaboration and other  revenues consist of upfront licensing and patent rights fees,
milestone payments related to licensed  technology, license  maintenance fees and revenues recognized
under our collaboration agreements.

License, collaboration and other revenues  decreased 42% for the 12 months ended December 31,

2007 from the comparable period in  2006 primarily due  to  the acceleration of $20.5 million  in
previously deferred revenue that we  recognized during  the second  half  of 2006 related to Roche’s
election to discontinue its involvement in both the asthma and transplant maintenance  collaborations
for daclizumab, which terminations were  effective in August 2006  and April 2007, respectively. In
addition, we recognized less revenue  in 2007 related to reimbursement for R&D services, primarily as a
result of lower R&D expenses incurred  under our collaboration  agreement with Biogen Idec  and the
terminations of our collaborations with Roche.  These decreases were  partially  offset by the  acceleration
of $5.2 million in previously deferred  revenue that we  recognized  during  the first four months of 2007
resulting from the April 2007 termination  of  our  collaboration with  Roche.

Total license, collaboration and other  revenues increased $36.4 million in 2006 from 2005 primarily
due to the recognition in 2006 of $20.5  million as a  result of the  discontinuation  of our  co-development
collaborations with Roche and an increase in  revenue recognized from  our collaborations  with Biogen
Idec and Roche, which we entered into  in  August 2005 and October 2005, respectively.

We  continue to evaluate potential opportunities  to  partner certain programs or capabilities of our

drug development, manufacturing and commercialization with  other  pharmaceutical  or biotechnology
companies and if we enter into other  collaboration  agreements in the  future, our license, collaboration
and other revenues likely would increase.

Costs and Expenses

(In thousands)

Years Ended December 31,

Annual Percent Change

2007

2006

2005

2007/2006

2006/2005

Research and development . . . . . . . . . . . . . .
General and administrative . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . .
Asset impairment charges . . . . . . . . . . . . . .

$204,175
67,367
6,668
5,513

$209,311
53,317
—
900

$156,049
35,330
—
15,769

Total costs  and expenses . . . . . . . . . . . . . .

$283,723

$263,528

$207,148

(2)%
26%
*
513%

8%

34%
51%
*%
(94)%

27%

* Not presented as calculation is not  meaningful.

Certain expenses related to our Commercial and Cardiovascular Operations which were  previously

included in cost of product sales, research and  development expenses,  general and administrative
expenses and asset impairment charges  in prior years have been presented as  discontinued operations.

We  expect our expenses in the near term to decrease significantly  relative to expense levels  during

2005  to  2007  because  we  completed  our  divestiture  of  the  Commercial  and  Cardiovascular  Assets  in
March 2008, we expect to close the sale of  the Manufacturing Assets by the end  of  the first quarter of
2008 and, as announced on March 4,  2008,  we will be implementing a significant restructuring effort
and related reduction in force over the  next several quarters. We will, however, incur a  significant
amount of restructuring costs by the  end of  2008, including  severance payments to terminated
employees, and additional costs, including  retention incentives  to  retained employees. We  expect that
then our expenses could, after our restructuring activities  are complete,  begin to increase  primarily
because of an expanding pipeline, more expensive late-stage clinical trials and  the extensive resource
commitments required to achieve regulatory approval  of potential products.

54

Research and Development Expenses

Our research and development activities include research, process development,  pre-clinical
development, manufacturing and clinical development,  which activities  generally include regulatory,
safety, medical writing, biometry, U.S.  and  European  clinical operations, compliance, quality  and
program management. Research and  development expenses consist  primarily of  costs of personnel to
support these research and development activities,  as well as  outbound milestone payments and
technology licensing fees, costs of preclinical  studies, costs  of  conducting our  clinical trials,  such as  fees
to CROs and clinical investigators, monitoring costs,  data management and drug supply  costs, research
and development funding provided to  third parties and an allocation of  facility and overhead costs,
principally information technology. Beginning with the first quarter  of  2006, research and  development
costs also include stock-based compensation expense accounted for under SFAS No.  123(R) as a
component of personnel-related costs.  Total  stock-based  compensation  expense recognized as research
and development expenses, including  amounts recognized under  SFAS No. 123(R),  was  $10.3 million in
2007 and $12.1 million in 2006.

The table below summarizes the stage of development  for each  of  our products  in clinical
development, including the research and development expenses recognized  in connection  with each
product.

Product Candidate

Description/Indication

Phase of
Development

Collaborator

Estimated
Completion of
Phase(1)

Nuvion (visilizumab)(2)

Daclizumab

PDL192
Volociximab (M200)

HuLuc63
Other Program-Related

Costs(3)

Non-Program-Related

Costs(4)

IV steroid-refractory
ulcerative colitis

Terminated in August
2007

Transplant maintenance

Asthma

Multiple sclerosis
Solid tumors
Solid tumors

Multiple myeloma
Multiple programs and
products

—

Phase 2 program
advancement pending
partnership
Phase 2 program being
evaluated
Phase 2
Pre-IND
Phase 2 program ongoing
partnership
Phase 1

—

—

—

—

—

—

Not yet disclosed

Not yet disclosed

Biogen Idec Not yet disclosed

—
Biogen Idec

2008
2008

Not yet disclosed
—

—
—

—

Research and
Development Expenses
for the
Years Ended December 31,

2007

2006

2005

(in thousands)
$ 42,138 $ 55,723 $ 28,209

28,329

52,939

37,908

26,141
19,569

27,058
1,207

5,650
23,338

16,322
4,036

—
27,588

10,300
4,055

—

59,733

51,303

47,989

Total Research and Development Expenses

$204,175 $209,311 $156,049

(1)

(2)

The information in the column labeled ‘‘Estimated Completion of Phase’’ is our current estimate of the timing of completion of product
development phases. The actual timing of completion of those phases could differ materially from the estimates provided in the table. The
clinical development portion of these programs may span as many as seven to 10 years and any further estimation of completion dates or
costs to complete would be highly speculative and subjective due to the numerous risks and uncertainties associated with developing
biopharmaceutical products, including significant and changing government regulation, the uncertainty of future preclinical and clinical study
results and uncertainties associated with process development and manufacturing as well as marketing.

In August 2007, following a DMC evaluation of data from the RESTORE 1 trial, the DMC recommended to us that we terminate the
RESTORE 1 study due to insufficient efficacy and an inferior safety profile in the Nuvion arm compared to IV steroids alone. We then
promptly reviewed unblinded data from the RESTORE 1 trial and concurred with the DMC’s recommendation and, in August 2007, we
announced our termination of the Nuvion phase 3 development program in IVSR-UC.

55

(3) Other Program-Related Costs consist of the aggregate research and development costs for those distinct programs or products that do not

individually constitute more than 5% of the total research and development expenses for the periods presented.

(4)

Non-Program-Related Costs consist of the aggregate research and development costs that are not associated with any particular program or
product, but rather, support our broad research and development efforts. Such costs primarily include those related to discovery of new
antibody candidates and manufacturing and quality activities in support of product development activities.

The slight decrease in research and development  expenses in  2007 compared to 2006  was due
primarily to decreases in our daclizumab  and Nuvion program costs, partially offset by increases in
development costs for PDL192 and HuLuc63.  The $24.6 million decrease  in our daclizumab  expenses
was largely the result of the terminations  of our programs  in asthma and  transplant maintenance in late
2006 and early 2007 due to the termination of  our collaboration with Roche.  The $13.6 million
reduction in Nuvion spend in 2007 was largely the result of the  termination  of  the program in the
second half of 2007 based on the initial findings of the DMC in  August. The $10.7 million  increase in
Huluc63 costs in 2007 was due to the commencement  of the  phase I trials in  multiple myeloma,
including related manufacturing costs, and the $20.5 million increase in  PDL 192 spend was driven by
manufacturing efforts and preclinical  work in  preparation for  an IND  filing. In addition, non-program
specific research and development costs  increased due to increased facilities costs  associated with the
lab facilities in our new headquarters  in Redwood City.

The $53.3 million increase in research and development  expenses in 2006  compared to 2005 was

primarily  due to increases related to  support our development of  Nuvion as  well as daclizumab in
connection with our collaborations with  Biogen  Idec and Roche,  as the Roche collaborations  were not
terminated until the second half of 2006 and early 2007.

For a discussion of the risks and uncertainties  associated with the  timing of completing a product

development phase, see the ‘‘If our research and development  efforts are  not  successful, we may not be
able  to effectively develop new products,’’  ‘‘The clinical development of drug  products is inherently
uncertain and expensive and subject  to  extensive government regulation,’’ ‘‘We must comply with
extensive government regulation,’’ ‘‘We may be unable  to  enroll a sufficient number of patients in  a
timely manner in order to complete  our clinical  trials,’’ ‘‘We must  attract and retain key employees in
order to succeed,’’ ‘‘We have ended our  solicitation of interest  in the Company and  its assets, other
than  our humanization royalty stream  assets, and undertaken to restructure the company, which could
distract our management and employees, disrupt operations, make  more difficult our ability to attract
and  retain key employees and cause other  difficulties,’’ ‘‘The process of  pursuing and implementing
multiple significant transactions and transaction structures simultaneously  diverts  the attention of our
management and employees, increases our professional services expenses  and may  disrupt  our
operations,’’ ‘‘We have a history of operating losses and  may not achieve sustained profitability,’’ ‘‘We
face significant competition,’’ ‘‘Changes in the U.S. and  international health  care industry, including
regarding reimbursement rates, could adversely affect the  commercial value of our development
products,’’ ‘‘We must protect our patent and other intellectual  property  rights to succeed,’’  ‘‘If our
collaborations are not successful or are terminated by  our partners,  we may not effectively develop and
market some of our products,’’ ‘‘The failure to gain  market acceptance of  our product candidates
among the medical community would  adversely affect our  revenue,’’ ‘‘The  ‘‘fast track’’ designation for
development of any of our products may not lead to a faster  development or regulatory review or
approval process and it does not increase  the likelihood the  product will receive regulatory approval,’’
‘‘Failure to achieve revenue targets or raise additional funds  in the future may require  us  to  reduce the
scope of or eliminate one or more of our planned activities,’’ and ‘‘We may be unable to obtain or
maintain regulatory approval for our  products’’ sections of our Risk Factors.

General and Administrative Expenses

General and administrative expenses generally consist of  costs of personnel, professional services,

consulting and other expenses related to our administrative,  marketing  and clinical affairs functions,
and  an allocation of facility and overhead  costs.  Beginning with the first  quarter of 2006, general  and

56

administrative costs also include stock-based  compensation  expense accounted  for under SFAS
No. 123(R) as a component of personnel-related costs.  Total stock-based compensation expense
recognized as general and administrative  expenses,  including amounts recognized under SFAS
No. 123(R), was $5.4 million and $7.5  million  for the  years  ended December  31, 2007 and 2006,
respectively.

General and administrative expenses  for the  year ended December 31, 2007  increased

$14.1 million, or 26%, from 2006. This  increase  was  primarily  due to $8.4 million  in increased legal
costs related to our strategic review process  and  litigation  in 2007, $2.6 million  in executive severance
payments that were accrued for during the  fourth  quarter  of  2007 (see  Note 9 for more details)  and
$5.3 million in depreciation reclassified  to  general and administrative in 2007  related to idle  capacity in
our  Minnesota manufacturing facility.

General and administrative expenses  for the  year ended December 31, 2006  increased

$18.0 million, or 51%, from 2005. This  increase  was  primarily  due to increases in personnel-related
expenses, consulting services and facility-related expenses.  These  increases were  partially  offset by
decreases in information technology-related costs.

Restructuring Charges

Manufacturing Restructuring

In August 2007, in connection with a  months-long  evaluation of  strategic alternatives that our

management and Board of Directors  conducted, we  announced a  strategic change to focus  the
Company on the discovery and development of novel antibodies  in oncology and  select immunologic
diseases.  As a result of this new strategic  focus,  we communicated  our intent to sell certain of our
assets that were not aligned with this new strategic direction. In addition we announced our plans  to
conduct a thorough review of our organization,  where  we anticipated a sizeable workforce reduction, to
ensure that our structure and scope of  operations are appropriately aligned with  our  new strategy.

In late September 2007, the Board of Directors formally approved a  workforce reduction related  to

our  manufacturing operations. During the  third quarter  of  2007, we informed employees that any
employees terminated in a reduction  would be eligible  for  a  package consisting of severance payments
of generally 12 weeks of salary and medical  benefits and up to three months of outplacement  services.
In early October 2007, we notified the 104 individuals affected by this workforce reduction,  and all
impacted employees were provided 60 days advance notice of the  date their employment would
terminate. In 2007, we recognized restructuring charges of $3.6 million, consisting of $2.4 million in
post-termination severance costs, $0.3 million of 401(k) matching payments  and $0.9  million  of  salary
and bonus accruals relating to the portion of the 60-day notice period over which the  terminated
employees would not be providing services to the  Company.

In February 2008, we entered into an asset purchase agreement  for  the sale  of  our  Minnesota
manufacturing operations to Genmab for total cash proceeds of $240 million. Under  the terms of  this
agreement, Genmab would acquire our  Manufacturing  Assets and plans to retain  the approximately  170
employees currently working at the manufacturing facility.

Facilities Related Restructuring

During  the third quarter of 2007, we initiated our move from  our prior corporate  headquarters  in
Fremont, California to our new location  in  Redwood City,  California.  In connection with this  move, we
ceased use of a portion of the leased  property  in Fremont,  California and,  as a result,  we recognized a
restructuring charge of $1.3 million. We  expect to pay  all obligations  accrued relating to these  leases by
the end of the first quarter of 2009.

57

In addition, during the second and fourth  quarters  of 2007, we ceased use  of two  of  our  leased

facilities in Plymouth, Minnesota. In connection with the sale of our Manufacturing Assets, which  we
expect to close in the first quarter of 2008, Genmab would assume our obligations for one of these two
facilities, specifically, the facility that  we vacated during the fourth quarter of 2007.  Accordingly, for
that facility, we have accrued lease exit  costs for the period  from January  1, 2008 to March  31, 2008,
the estimated date after which Genmab  would assume the  obligations under  the lease. During 2007, we
recognized restructuring costs of $1.8 million related  to  these  leased facilities. We expect to pay all
obligations accrued relating to these  leases by the end of the first quarter of 2009.

The following table summarizes the restructuring activities discussed above,  as well as the

remaining reserve balances at December  31, 2007:

(In thousands)

Balance at December 31, 2006 . . . . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . . . . .
Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . .

Personnel
Costs

Facilities
Related

Total

$ — $ — $ —
6,668
(4,400)
55

3,616
(3,205)
—

3,052
(1,195)
55

Balance at December 31, 2007 . . . . . . . . . . . . . . .

$

411

$ 1,912

$ 2,323

Other Restructuring Activities

In an effort to reduce operating costs  to a level more consistent  with a biotechnology company

focused solely on antibody discovery and  development, in March  2008 we  commenced  a restructuring
effort pursuant to which we intend to  eliminate approximately 250 employment positions over
approximately one year and undertake other  substantial cost  cutting measures. This reduction is in
addition to previously planned reductions of approximately 335 positions  resulting from  the sales  of the
Commercial and Cardiovascular Assets and Manufacturing Assets.  Subsequent to the transition period,
we expect that our workforce will consist  of  approximately  300 employees. We anticipate a transition
period of approximately 12 months before planned expense reductions and transition services related to
the Commercial and Cardiovascular  Assets  and Manufacturing Assets sales transactions are fully
implemented or completed. We have offered retention bonuses and  other incentives to the transition
employees, as well as to the employees that we  expect to retain after the restructuring, to encourage
these employees to stay with the Company.  In connection with  this  restructuring  effort, we expect to
incur significant transition-related expenses over  the next 12-month period, a portion of which would be
recorded  as restructuring charges.

Asset  Impairment Charges

Total asset impairment charges recognized in continuing operations for the years ended
December 31, 2007, 2006 and 2005 were  $5.5 million,  $0.9 million and $15.8 million, respectively.

In June 2007, management committed to a plan to sell two buildings that comprised part  of our
prior corporate headquarters in Fremont,  California. Based  on market value information we had at the
time, we concluded that the net carrying value of  the assets was  impaired as  of  June  30, 2007, and we
recognized an impairment charge of  $5.0 million to reduce the net carrying value  of  the assets to
$20.6 million, which was our estimate of fair value,  less costs to sell. The sale  of these  two buildings
closed in October 2007 on terms generally consistent with those expected  and, as a result,  no significant
gain or loss on the sale was recognized at the  time of the  sale.

In June 2006, we concluded that the  carrying  amount  of  certain of our licensed research

technology was impaired because we  abandoned the  related  technology  associated with certain research
projects we originally acquired in the third quarter of  2004.  Accordingly, we  recorded an impairment

58

charge  of $0.9 million, representing the unamortized  balance prior to the  impairment assessment,
during the three months ended June  30,  2006.

In October 2005, pursuant to the terms  of  the Second Amended and Restated Worldwide
Agreement with Roche, we agreed not to exercise the  reversion right we had held  under the 2003
Worldwide Agreement with Roche to  promote and sell the Zenapax antibody for prevention of acute
kidney transplant rejection, and we were  no longer required to make  a  payment for such  right that
would otherwise would have been due  in  2006 under this agreement. As a result,  during  the fourth
quarter of 2005, we wrote off the carrying value of  the reversion right of  $15.8 million acquired in
October 2003 under the 2003 Worldwide Agreement with Roche.

Discontinued Operations and Assets  Held  for Sale

On August 28, 2007, we announced our intent to sell  our  Commercial and Cardiovascular Assets.

We  subsequently  announced  on  October  1,  2007  that  we  also  would  seek  offers  for  the  sale  of  our
entire Company or of our key assets.  During  the fourth  quarter of 2007, based on  the level of  interest
and related offers the Company received for  its Commercial  and Cardiovascular  Assets, we elected to
proceed with the sale of the Commercial  and  Cardiovascular Assets separately from  a sale  of the entire
Company. Therefore, we classified our  Commercial  and Cardiovascular Assets, including product  rights
intangible assets and fixed assets, as ‘‘held for sale’’ on the  Consolidated  Balance Sheet.  In addition,
since we expect to have no significant  or  direct involvement in the future operations related  to  these
assets after the closing date of the sales  in March  2008, the results of the Commercial  and
Cardiovascular Operations have been presented as discontinued operations. In  addition to the  financial
results related to our Commercial and Cardiovascular Assets,  the amounts reflected as  discontinued
operations for our Commercial and Cardiovascular  Operations for  2005 and  2006 include all revenues
and costs and expenses related to previously owned commercial products  (Declomycin,  Sectral, Ismo
and Tenex) as well as development costs  related to terlipressin, a  development  program that we
terminated in 2006, all of which we acquired  in connection with the ESP Pharma acquisition in March
2005, the purchase of rights to the Retavase product in March 2005 and the purchase of  certain Cardene
rights from Roche in September 2006.

In December 2007, we entered into an asset  purchase  agreement with  Otsuka  under which we
agreed to sell the rights to IV Busulfex, including trademarks, patents, intellectual property and related
assets, for $200 million in cash, plus  additional consideration  for the sale of  our IV Busulfex
inventories, all to be paid at closing. In addition, in  February 2008, we  entered in  to  an asset purchase
agreement with EKR under which we agreed to sell  our  Cardiovascular Assets. The consideration  for
our  Cardiovascular Assets, which includes  all  trademarks, patents, intellectual property, inventories  and
related assets, consisted of an upfront payment of $85  million, up to $85  million  in development and
sales milestone payments, as well as royalties  on certain  future Cardene and ularitide product sales. We
closed both of these transactions, completing the  sale of the Commercial and  Cardiovascular  Assets,
during the first quarter of 2008.

59

The components of our discontinued operations,  which relate  to  our Commercial and

Cardiovascular Operations, are as follows:

(In thousands)

Revenues

Years Ended December 31,

Annual Percent
Change

2007

2006

2005

2007/2006

2006/2005

Product sales, net . . . . . . . . . . . . . . . . . . . .

$204,166

$ 165,701

$ 122,106

23%

36%

Costs and expenses

Cost of product sales . . . . . . . . . . . . . . . . .
Research and development and selling,

81,339

86,292

60,257

(6)%

43%

general and administrative . . . . . . . . . . . .

123,058

118,888

63,046

4%

89%

Acquired in-process research and

development . . . . . . . . . . . . . . . . . . . . . .
Asset impairment charges . . . . . . . . . . . . . .
Other acquisition-related charges . . . . . . . . .

—
—
1,893

—
73,750
6,199

79,417
15,500
20,349

Total costs and expenses . . . . . . . . . . . . .

206,290

285,129

238,569

*
(100)%
(69)%

(28)%

(100)%
376%
(70)%

20%

Loss from discontinued operations before tax

and interest . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .
Interest and other income, net

Loss from discontinued operations before tax .
Income tax expense (benefit) . . . . . . . . . . . .

(2,124)
675

(1,449)
221

(119,428)
—

(119,428)
(174)

(116,463)
—

(116,463)
821

(98)%
*

3%
*

3%
(99)%
(227)% (121)%

Loss from discontinued operations . . . . . . . . .

$ (1,670) $(119,254) $(117,284)

(99)%

2%

* Not presented as calculation is not  meaningful.

Product sales, net

The increase in net product sales from 2006 to 2007 primarily was attributable  to  increases in  sales
volumes of our Cardene IV product and, to a lesser extent, higher average  per  unit sales prices for the
Cardene IV and IV Busulfex products. In addition, we recognized a  $2.6  million change in estimate for
our  product returns reserve in the second quarter of 2007, which reduced revenues to a lesser  extent
than the $5.6 million change in estimate that we recognized in the second  quarter  of  2006. The overall
increase in net product sales from 2006 to 2007 was  partially offset by a  decrease  in the sales volumes
of our Retavase product. The increase in net product  sales from 2005 to 2006 was due  to  increases in
sales of our Cardene IV product and, to a lesser degree,  our IV  Busulfex product. These increases were
partially offset by a decline in Retavase product sales volumes as well as a $5.6 million charge  related to
a change in estimate for our product returns reserve that we  recognized in the second quarter of 2006.
In addition, net product sales in 2005 included sales for  only approximately nine months as compared
to 12 months of sales for the 2006 period  as the  rights  to  these products were purchased in March  2005
in conjunction with our acquisitions of ESP  Pharma and  the rights to Retavase.

Cost of Product Sales

Cost of product sales (COS) consists  primarily  of  cost of goods sold, royalty  expenses and
amortization of product rights. The decrease in COS from 2006  to  2007 was primarily attributable to
lower amortization expenses, partially offset by increases in sales volumes. The decrease in  total
amortization expenses was the result  of  (i) a reduction in amortization expenses related to our
Retavase intangible assets in 2007, as we  recognized an  impairment charge of $72.1  million  in the
fourth quarter of 2006, which reduced  subsequent amortization expenses, and  (ii) only 11  months of

60

amortization recognized related to the Commercial and  Cardiovascular Assets  in 2007 compared to
12 months in 2006 since these assets were  classified as ‘‘held  for sale’’ on the balance sheet as  of
December 1, 2007. In addition, COS  in  2007 included  a $5.4 million charge that we  recognized during
the fourth quarter related to the failure  of certain  Retavase  batches, compared  with $5.5 million of
charges related to Retavase manufacturing difficulties and failed  batch expenses  in 2006. The increase
in COS from 2005 to 2006 was due to  the fact  that we had four  quarters of product  sales in 2006
versus three quarters in 2005, a higher  effective royalty rate related to sales of our Cardene IV product
in 2006 as compared to the 2005 period and, to a lesser extent, $5.5 million in Retavase batch failure
costs in 2006. This increase was partially offset by a more  profitable product mix, particularly  with
respect to higher sales of our  Cardene IV product, and lower manufacturing and  inventory-related costs
for our  IV Busulfex and Cardene products when compared to the 2005  period.

Research and Development and Selling, General  and Administrative Expenses

Research and development expenses for all periods presented primarily  relate to development and

lifecycle  management activities expenses  in support  of the Commercial and Cardiovascular Assets.
Selling, general and administrative expenses relate to employee and  other associated costs to support
these assets and operations. The increase in  these  expenses over the  periods presented was  due  to  the
growth in our overall infrastructure to support the growth in the Commercial and Cardiovascular
Operations.

Acquired In-Process Research and Development Expenses

In connection with our acquisition of  ESP Pharma in March  2005, we recognized charges for

acquired in-process research and development of $79.4 million due to incomplete research and
development programs that had not  yet reached  technological feasibility and had no alternative future
use as of the acquisition date. See Status  of Acquired In-Process Research  and Development Programs
discussion below for further information.

Asset Impairment Charges

Asset impairment charges recognized  in our discontinued operations for 2007, 2006 and 2005 were
$0 million, $73.8 million and $15.5 million,  respectively. These charges relate  to  the impairment of our
Retavase intangible assets in 2006 and the impairment  of our off-branded products in  2005 prior to the
sale of such products in 2006.

Other Acquisition-related Charges

Other acquisition-related charges represent  costs incurred  that relate to ESP Pharma operations
prior to our acquisition of the business and sales returns  of our Retavase product from sales made prior
to our acquisition of the rights to the  Retavase product in March 2005. These costs primarily relate to
product  sales returns, but also include  charges  for uncollectible accounts receivable and other
miscellaneous liabilities related to pre-acquisition ESP Pharma operations.

Commercial Restructuring and Retention Plans

In August 2007, based on retention and  severance plans  approved by the Compensation
Committee of our Board of Directors, we committed to provide certain  severance benefits to those
employees who would be impacted in  connection  with the potential future sale of the Commercial and
Cardiovascular Assets (the Commercial  Employees). All communications  of these benefits to the
approximately 250 Commercial Employees took place prior  to  the end of  August 2007, including the
amount of severance to which the employees  would  be  entitled upon termination in the  event they
were not offered a comparable position by  us or the acquiring entity, which is generally 12 weeks of

61

salary and medical benefits and up to three  months of outplacement  services.  Since these severance
benefits did not meet the definition of a  liability under the applicable accounting literature as of
December 31, 2007, we did not recognize any expenses related to this  severance  plan during 2007. We
will  record  a  liability  and  related  charges  for  these  severance  benefits  during  the  first  quarter  of  2008.

In addition to the severance program  discussed above,  we also provided retention  bonuses for

certain Commercial Employees during this transition period, which  are payable  on the  earlier of
June 30, 2008 or the date on which the  Commercial Employee’s  employment with  us  is terminated in
connection with the sale of the Commercial and Cardiovascular  Assets. We are  accruing the liability
over the period from the date the program was  approved through  the estimated service period  for the
Commercial Employees. The total amount of  potential Commercial Employee retention bonuses is
$3.0 million, and we recognized $2.0 million in  2007, which  is included in the research and development
and selling, general and administrative expense component of discontinued  operations.

Interest and Other Income, net and Interest Expense

(In thousands)

Years Ended December 31,

Annual Percent
Change

2007

2006

2005

2007/2006

2006/2005

Interest and other income, net . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . .

$ 19,362
(13,708)

$ 17,704
(13,070)

$ 9,616
(10,177)

9%
5%

84%
28%

Total interest and other income, net and

interest expense . . . . . . . . . . . . . . . . . . . . .

$ 5,654

$ 4,634

$

(561)

22%

(926)%

Interest and other income, net, in 2007 increased from 2006 primarily due  to  the increased  interest

earned on our cash, cash equivalents,  marketable securities and restricted cash and  investments
balances as a result of higher interest rates  and higher invested  balances.  Interest and other income,
net, in 2007, 2006 and 2005 included interest  income of $20.2 million, $17.5 million and $9.7 million,
respectively. In addition, we recognized  loan defeasance costs  of  $0.9 million, which  is included in
interest and other  income, net, in connection with the  early extinguishment of debt associated with the
sale of our Fremont property (see Note  16 to the  Consolidated  Financial  Statements).

Interest and other income, net, in 2006 increased from 2005 primarily due  to  the increased  interest

earned on our cash, cash equivalents,  marketable securities and restricted cash and  investments
balances as a result of higher interest rates  and higher invested  balances.

Interest expense increased by $0.6 million  in 2007 compared  to  2006 due to a portion of our lease
payments on our Lab Building (as defined below) in Redwood City, being recorded  as interest expense
on the related long-term financing liability. For accounting purposes, we are considered to be the
owner of the leased property and we  have recorded  the fair value  of  the building and a corresponding
long-term financing liability on our Consolidated Balance  Sheet. See the Liquidity and Capital
Resources section of this Annual Report  for further details of this lease and  the related accounting
treatment.

Interest expense in 2006 increased from  2005 as a result of both the  2005 Notes and  the 2003
Notes being outstanding during the entire  year  of 2006, compared  to  the 2005 Notes being outstanding
only for 10 out of 12 months of 2005 as the 2005 Notes were issued in mid-February  2005. In addition,
interest expense increased in 2006 as  compared to 2005 due to lower amounts  of  capitalized  interest
expense in 2006.

Interest expense in all periods presented,  net of amounts capitalized, included amounts related  to

our  2.00%, $250.0 million Convertible  Senior Notes  (2005  Notes), our 2.75%, $250.0 million
Convertible Subordinated Notes (2003  Notes)  and a  7.64% term  loan associated with  the purchase of

62

two of the buildings that made up our Fremont, California facilities, which was extinguished in
connection with the sale of this property  in  October 2007. Interest expense in 2006  and 2005  also
included amounts incurred related to  certain notes  payable assumed  in connection with our acquisition
of Eos Biotechnology, Inc, (Eos) in the  second quarter  of 2003.

Income Taxes

Income tax expenses in 2007, 2006 and  2005 were  primarily related to federal alternative minimum
taxes, state taxes and foreign taxes on income earned  by  our foreign operations, which were reduced by
interest accrued related to the lapsing of certain contingent liabilities of ESP Pharma after our
acquisition of ESP Pharma in March 2005. Our  total  provision for income taxes  for the  years  ended
December 31, 2007, 2006 and 2005 was $0.5 million, $0.8 million and $0.9  million, respectively, and
$0.2 million, $1.0 million, and $0.1 million, respectively,  related to our  continuing operations in  our
Consolidated Statement of Operations. We recognized  income tax  expenses related to our discontinued
operations of $0.2 million and $0.8 million in 2007 and 2005, respectively,  and an  income  tax benefit of
$0.2 million in 2006.

In July 2006, the FASB issued Interpretation No. 48, ‘‘Accounting for Uncertainty in Income
Taxes’’ (FIN 48), which was effective for  fiscal years beginning after December 15, 2006. On  January 1,
2007, we adopted the provisions of FIN 48, which prescribes a recognition threshold  and measurement
attribute for the financial statement recognition and  measurement of  a  tax position taken or expected
to be taken in income tax returns. Unrecognized tax  benefits represent tax positions for which reserves
have been established. A reconciliation of  our unrecognized  tax  benefits, excluding  accrued interest  and
penalties, for 2007 is as follows:

(In thousands)

Balance at January 1, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increases related to current year tax  positions . . . . . . . . . . . . . . . . . .
Increases related to prior year tax positions . . . . . . . . . . . . . . . . . . .
Decreases related to prior year tax positions . . . . . . . . . . . . . . . . . . .
Expiration of statute of limitations for the assessment of taxes . . . . . .

December 31,
2007

$ 9,974
856
1,604
(170)
(688)

Balance at December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$11,576

The future impact of the unrecognized tax benefit  of $11.6 million, if recognized, is as follows:
$0.1 million would affect the effective tax  rate;  $0.8 million would result  in a reduction in goodwill
associated with the acquisition of ESP  Pharma; and $10.7 million would  result in adjustments  to
deferred tax assets and corresponding adjustment  to  the valuation allowance.

Estimated interest and penalties related to the underpayment  of  income  taxes are  classified as a

component of tax expense in the Consolidated Statement of Operations  and totaled $0.1  million  in
2007. Accrued interest and penalties were $0.5 million and $0.6  million as  of  December 31, 2007 and
2006, respectively.

In general, our income tax returns are subject to examination by U.S. federal,  state and various

local tax authorities for tax years 1992 forward. We  do  not anticipate any additional  unrecognized
benefits in the next 12 months that would  result in  a material change to our financial position.

As of December 31, 2007, we had deferred tax assets in  excess  of our  deferred tax liabilities of
approximately $120.2 million. Due to our lack of earnings  history, the net deferred tax  assets have been
fully offset by a valuation allowance.  We closed the  sales of  the Commercial and Cardiovascular Asset
during the first quarter of 2008, and  we  expect to close on the sale of the  Manufacturing Assets  during
the first quarter of 2008. As a result  of  these sales, we  anticipate utilizing  a substantial  portion of our

63

deferred tax asset balances at December 31, 2007  by the end of the  first quarter  2008 and incurring a
small tax liability in those tax jurisdictions  where we  have insufficient deferred tax assets.

Status of Acquired In-Process Research and Development Programs

In connection with our acquisition of  ESP Pharma in March  2005, we recognized  charges for

acquired in-process research and development of $79.4  million  due to incomplete research and
development programs related to terlipressin and ularitide  that had  not  yet reached technological
feasibility and had no alternative future use as of the acquisition date. As  a result of our
relinquishment of our rights to terlipressin in 2006 and the sale of ularitide in March  2008, we  no
longer own rights to either of these products. The $79.4 million in acquired in-process research and
development expenses has been classified as discontinued  operations  in 2005.

In connection with our acquisition of  Eos  in April  2003, we recognized charges for acquired
in-process research and development of  $37.8 million  due to incomplete research and  development
programs related to volociximab (M200) and F200  that had not yet reached technological feasibility and
had no alternative future use as of the respective acquisition dates. Of the $37.8 million charge,
$24.1 million related to M200, a function-blocking antibody that targets a  specific integrin for solid
tumors, including melanoma, pancreatic and renal cell cancers. We currently have phase  2 clinical trials
for M200 ongoing. With respect to F200, which represented the  other $13.7 million of the charges, we
discontinued the development of the  product.

In addition, during the fourth quarter of 2003, we recognized  a charge to acquired in-process

research and development totaling $48.2 million in  connection with  the amendment to our
collaboration agreement with Roche  in October 2003, pursuant  to  which we acquired  exclusive
worldwide rights to market, develop,  manufacture and sell daclizumab (Zenapax) in all disease
indications other than transplantation. The $48.2  million  charge related to the rights to autoimmune
indications for daclizumab that were  then being developed and tested in clinical studies, specifically to
treat asthma and ulcerative colitis. We  have terminated the daclizumab program  related to the
treatment of ulcerative colitis, and the  advancement of the  phase 2 clinical trial of daclizumab for the
treatment of asthma is pending a partnership. We are  pursuing  development of daclizumab  for
treatment of moderate to severe asthma and intend to initiate a phase 2  trial  during 2008.

Assumptions Underlying In-Process Research and  Development Charges

We  determined the values of the acquired in-process research  and  development from the ESP

Pharma acquisition, the Eos acquisition and the Roche arrangement by  estimating the related future
probability-adjusted net cash flows, which we  then discounted to present values using a discount rate of
14% for the ESP Pharma acquisition and 15% for both the Eos acquisition and  the Roche
arrangement. This discount rate is a significant assumption and was based on  our estimated  weighted-
average cost of capital at the time taking  into account the  risks  associated with the  projects  acquired.
We  based the projected cash flows from such projects on  estimates of revenues and operating  profits
related to such projects considering the stage of development  of  each potential product acquired,  the
time and resources needed to complete  each product, the life of each potential commercialized product
and associated risks, including the inherent difficulties and uncertainties in developing a drug
compound and obtaining FDA and other  regulatory approvals,  and  risks related to the viability of and
potential alternative treatments in any  future target  markets. In  determining the value of the acquired
in-process research and development, the  assumed commercialization dates used for the potential
products as of the  respective dates of acquisition ranged from  2007 to 2008 related to the ESP Pharma
acquisition and the Roche arrangement  and 2008 to 2009  related to the  Eos acquisition.

64

Numerous risks and uncertainties exist with timely completion of development, including the

uncertainty and timing of commencing  human clinical  trials and  patient enrollment, as well  as
uncertainties related to the results of  such  studies, including interpretation of  the data and  obtaining
FDA and other regulatory body approvals. The nature  of  the remaining efforts for completion of the
acquired in-process research and development projects primarily consist  of  initiating  clinical trials  and
studies,  the cost, length and success of  which are  extremely difficult  to  determine. Feedback  from
regulatory authorities or results from clinical studies might require modifications  or delays  in later  stage
clinical trials or additional studies to be  performed. The acquired products under development may
never be successfully commercialized due  to  the uncertainties  associated with  the pricing of new
pharmaceuticals and the fact that the cost of sales to produce  these  products in a  commercial setting
has not been determined. If these programs cannot be completed on  a timely basis,  then our prospects
for future revenue growth would be adversely impacted.

LIQUIDITY AND CAPITAL RESOURCES

To date, we have financed our operations primarily  through public and private placements of
equity and debt securities, royalty revenues, license revenues, collaboration and other revenues under
agreements with third parties, interest  income  on invested capital  and,  more  recently,  product sales. At
December 31, 2007, we had cash, cash  equivalents, marketable securities and  restricted cash and
investments in the aggregate of $440.8  million, compared to  $426.3 million at  December 31, 2006.

Net cash provided by our operating activities  in 2007 was  $67.0  million  compared with

$78.8 million and $31.6 million in 2006  and  2005, respectively.  The  decrease in net  cash provided by
operating activities in 2007 was primarily attributable to increased legal  costs associated with our
strategic assessment process in 2007 and changes  in our working  capital due to the timing of  payments
relating to cash receipts from receivables and cash payments for  our liabilities,  partially offset by higher
product  sales and royalty revenues during  2007.  In 2006, the $47.2 million increase  in cash provided  by
operations from 2005 was primarily attributable  to  increased product sales and  revenues from  royalties,
which  were partially offset by the increase in spending  for  advancing clinical programs and  our
expansion into sales and marketing activities as well as an increase in headcount.

Net cash provided by investing activities in 2007  was $72.7 million, compared to cash used in

investing activities of $116.0 million and $320.8  million  in 2006 and 2005,  respectively. The
$72.7 million net cash used in investing activities in 2007  was  primarily attributable to net maturities  of
$156.5 million of our available-for-sale marketable  securities due to the  timing differences of purchases
and maturities, and $20.9 in proceeds  from the  sale of  our property in Fremont, California. These
increases were partially offset by $94.7 million in capital  expenditures, which  included the  development
and construction of our new headquarters  in  Redwood  City, California.  The  $116.0 million net cash
used in investing activities in 2006 was  primarily attributable to net purchases of marketable  securities
of $75.4 million due to the timing differences of purchases and maturities  of our  available-for-sale
marketable securities, $36.5 million in  capital  expenditures, of which $2.8 million related to the
development and construction of our  new  headquarters, and  $15.0 million  related to the first of  two
milestone payments payable to Centocor under the Retavase product purchase agreement (see Note 7
to the Consolidated Financial Statements for  further information). These net purchases were partially
offset by the repayment to us by Exelixis  of  a $30.0 million note  receivable and the establishment of
letters  of credit related to the lease of  and  construction at our new corporate headquarters totaling
$18.3 million. The $320.8 million net  cash used in  investing  activities in  2005 was primarily attributable
to $432.6 million in cash payments (net  of  cash  acquired) related to the acquisitions of ESP Pharma
and the rights to the  Retavase product in March 2005 and $41.3 million in capital  expenditures, which
were partially offset by $154.5 million  in  sales and maturities of  our marketable securities  and
maturities of restricted investments.

65

Net cash provided by financing activities in  2007 was $22.0 million, compared to $32.9 million and

$381.2 million in 2006 and 2005, respectively.  The  $22.0 million net cash provided  by  financing activities
in 2007 was primarily due to the issuance of our common stock primarily in connection with employee
option exercises and our employee stock purchase plan.  The  $32.9 million net cash provided  by
financing activities in 2006 was primarily due to the  issuance  of our  common stock primarily in
connection with option exercises. The  $381.2 million net cash provided  by financing activities in 2005
was primarily due to the issuance of the 2005 Notes  in February  2005, the issuance of common  stock to
Biogen Idec for $100 million, and employee stock purchase plan and stock  option exercises  totaling
$39.9 million

In conjunction with the announcement  of  the cessation of the  sale process in  March 2008, we
announced that we intend to distribute  to  our stockholders at least $500 million of the  initial proceeds
from the sale of the Commercial and  Cardiovascular Assets  and Manufacturing  Assets, pending the
close of all of the transactions, in a form and at a time to be determined. In addition, we announced
that we are actively evaluating several alternative structures that  would, if completed, result in the
distribution to our stockholders of 50%  or more of the  value of future  antibody humanization royalties
that would be received from currently  marketed products.  We are carefully evaluating numerous
factors, including tax implications, structural considerations, and market conditions, in  order  to  select
the alternative that would maximize the  value of the  humanization royalties for  our stockholders. The
structures being evaluated include, among  others, a sale of the right to receive future royalties, a
securitization of future royalties or a distribution to stockholders of securities related  to  the royalty
stream.

In conjunction with our restructuring  efforts and significant cost-cutting measures currently
underway, we believe that the revenues  generated from our royalties and  collaboration agreements,
taking into account a distribution to our  stockholders of 50% or more of the  value of future antibody
humanization royalties, discussed below,  will be sufficient to fund our operations over the next  year  and
the foreseeable future. Our future capital requirements will depend on numerous factors, as  described
below, and the sale of another or all  of  our key assets  could fundamentally change how we fund our
operations. Such factors that impact  our  future  capital requirements include, among others, royalties
from sales of products by third-party  licensees, including Avastin, Herceptin, Lucentis, Mylotarg, Raptiva,
Synagis, Tysabri and Xolair; our ability to enter into additional collaborative, humanization,  patent
license  and patent rights agreements; interest income; progress  of product  candidates in  clinical trials;
the ability of our licensees to obtain  regulatory approval and successfully manufacture  and market
products licensed under our patents;  the continued  or  additional support by our collaborative partners
or other third parties of research and development efforts and clinical trials;  investment in existing and
new research and development programs;  time required to gain  regulatory approvals; our ability to
obtain and retain funding from third parties  under collaborative arrangements; the demand for our
potential products, if and when approved; potential acquisitions of technology,  product candidates or
businesses by us; and the costs of defending or prosecuting any patent opposition or litigation necessary
to protect our proprietary technology. In order to develop  and  commercialize our potential products we
may need to raise substantial additional funds through  equity or debt financings, collaborative
arrangements, the use of sponsored research  efforts or  other means.  No assurance can be given that
such  additional financing will be available on acceptable terms, if  at  all, and such financing may only be
available on terms dilutive to existing  stockholders.

In July 2006, we entered into agreements to lease two buildings in Redwood City, California, to

serve as our corporate headquarters.  The  larger of the  two  buildings  (the Administration Building)
primarily  serves as general office space while the other serves as our principal laboratory space  (the
Lab Building). We took possession of  the buildings during  the fourth quarter of 2006  and completed
our move into the buildings by the end  of 2007. Significant leasehold improvements were performed for
the Lab Building, which had never been occupied  or improved  for occupancy.  Due to our involvement

66

in and assumed risk during the construction period, as  well as the  nature of the leasehold
improvements for the Lab Building, we  were required under  Emerging  Issues Task Force No. 97-10,
‘‘The Effect of Lessee Involvement in  Asset Construction,’’ to reflect the lease  of the Lab Building in
our  financial statements as if we had  purchased the building. Therefore, we recorded the fair  value of
the building and a corresponding financing liability, which  was approximately  $25.4 million, at the  time
when we took possession of the building.  We incurred approximately  $64 million in leasehold
improvements in the Lab Building. We  completed  construction  during  the fourth  quarter  of 2007 and
the Lab Building was placed into service in December 2007. Our underlying lease  term is
approximately 15 years, or through December 31,  2021. At December 31,  2007, our financing liability
related to the Lab Building was approximately $26.9  million.

In November 2006, we established an  irrevocable  letter of credit in  the amount of $15.0 million

with a financial institution in connection  with the building  leases  in Redwood City, California.  This
letter of credit was to expire in November 2007,  but it  was automatically extended to November  2008
since this letter of credit was not returned by the holder before November 2007.

In February 2005, we issued the 2005 Notes, which are  convertible into our common stock  at a
conversion price of $23.69 per share, subject  to  adjustment in certain events. Interest on the 2005 Notes
is payable semiannually in arrears on February  15 and August 15 of each  year.  The  2005 Notes are
unsecured and subordinated to all our existing and future indebtedness and  may be redeemed at our
option, in whole or in part, beginning  on February 19, 2010  at  par value.  We used the proceeds from
the 2005 Notes to help fund the acquisitions of ESP Pharma  and  the  rights to the Retavase product in
March 2005.

In July 2003, we issued the 2003 Notes, which are convertible into our  common  stock at a

conversion price of $20.14 per share, subject to adjustment in certain events and  at the holders’  option.
Interest on the 2003 Notes is payable semiannually  in arrears on February  16 and  August 16 of each
year. The 2003 Notes are unsecured and  are subordinated to  all our  existing and future senior
indebtedness  and may be redeemed at our  option, in  whole or  in part, beginning  on August  16, 2008 at
par value. In addition, in August 2010,  August  2013 and August 2018, holders of our 2003 Notes may
require us to repurchase all or a portion of their notes at 100% of their principal amount, plus any
accrued and unpaid interest to, but excluding, such date. For  2003 Notes to be repurchased in August
2010, we must pay for the repurchase in  cash, and we may pay for the repurchase of  notes to be
repurchased in August 2013 and August 2018,  at our option,  in cash,  shares of  our common  stock or a
combination of cash and shares of our common stock.

Our material contractual obligations under lease, debt, construction, contract manufacturing  and
other agreements for the next five years and thereafter, excluding  commitments that were assumed by

67

Otsuka  and EKR under the terms of  the  sales of the Commercial  and Cardiovascular  Assets in  March
2008, are as follows:

(In thousands)

CONTRACTUAL OBLIGATIONS
Operating leases . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term liabilities (including interest

payments)(1) . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible notes (including interest  payments) . . .
Construction  contracts . . . . . . . . . . . . . . . . . . . . .
Contract manufacturing . . . . . . . . . . . . . . . . . . . .

Payments Due by Period

Less Than
1  Year

1-3 Years

4-5 Years

More  than
5 Years

Total

$ 4,719

$

7,539 $

6,930 $ 63,309 $ 82,497

6,955
11,875
2,483
3,744

7,284
273,748
—
—

7,774
257,500
—
—

42,275

64,288
— 543,123
2,483
—
3,744
—

Total contractual obligations . . . . . . . . . . . . . . .

$29,776

$288,571 $272,204 $105,584 $696,135

(1) Includes lease payments related to our Lab Building  in Redwood City, California and

post-retirement benefit obligations

In addition to the amounts disclosed in the table above, we  have committed  to  make  payments for

certain retention and severance related benefits. See Notes 6, 9  and 21  to the Consolidated Financial
Statements for further details. Further, we have committed to make  potential future ‘‘milestone’’
payments to third parties as part of in-licensing and product development  programs.  Payments under
these agreements generally become due  and payable only upon  achievement of certain  clinical
development, regulatory and/or commercial  milestones. Because the  achievement of these milestones
has not yet occurred, such contingencies  have not been recorded  in our Consolidated Balance Sheet as
of December 31, 2007. We estimate that  such  milestones that could be due and payable over  the next
year approximate $2 million and milestones  that could  be  due and payable over the next  three years
approximate $4 million.

In addition, in connection with the closing of  the Cardiovascular Assets to  EKR and under  certain

circumstances, we may be required to reimburse EKR for the cost of certain Retavase manufacturing
obligations during 2008, not to exceed $2.5  million.

Off-Balance Sheet Arrangements

None.

68

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURE  ABOUT MARKET RISK

Interest Rate Risk

We  maintain a non-trading investment  portfolio of investment grade, highly liquid debt securities,

which  limits the amount of credit exposure to any one issue, issuer or  type  of instrument. We do  not
use derivative financial instruments for  speculative or trading purposes.  We  carry our investments debt
securities at fair value, estimated as the amount at which an  asset  or liability could be bought or sold in
a current transaction between willing parties. A combination of factors  in the  housing and  mortgage
markets, including rising delinquency  and  default rates on subprime mortgages  and declining home
prices, has led to increases in actual  and expected  credit losses for residential mortgage-backed
securities and mortgage loans. In 2007, the  credit markets began reacting  to  these  changing factors  and
the prices of many securities backed  by  subprime mortgages  began  to  decline.  Lower volumes  of
transactions in certain types of collateralized securities might  make it  more  difficult  to  obtain  relevant
market information to estimate the fair  value of these financial instruments.  In  accordance  with our
investment policy, we diversify our credit  risk  and invest in  debt securities with  high credit  quality.
Substantially all of our investments held  as of December 31, 2007  are  actively traded  and our estimate
of fair value is based upon quoted market prices. We have not recorded losses on our securities  due  to
credit or liquidity issues. We will continue to monitor our credit risks and  evaluate the potential  need
for impairment charges related to credit  risks in future periods.

The debt securities in our investment portfolio are subject to interest  rate  risk. We do not
currently hedge interest rate exposure.  If  market interest rates were  to  increase by 100  basis points
from December 31, 2007 and 2006, the fair  value of  the portfolio  would decline by $0.1  million  and
$2.0 million, respectively. The modeling  technique used measures  the change in fair  values  arising  from
an immediate hypothetical shift in market interest rates  and assumes  ending fair values include
principal plus accrued interest.

As of December 31, 2007, the aggregate fair value of our convertible  subordinated notes was
$500.7 million, based on available pricing information.  The 2003 Notes  bear interest at a fixed rate of
2.75% and the 2005 Notes bear interest  at a  fixed  rate of 2.00%. These obligations are subject  to
interest rate risk because the fixed interest rates under  these  obligations may exceed  current interest
rates.

The following table presents information about our  material  debt obligations that are sensitive  to
changes in interest rates. The table presents  principal  amounts and related weighted-average interest
rates by year of expected maturity for our debt obligations.  Our convertible notes may  be  converted  to
common stock prior to the maturity date.

(In thousands)

2008

2009

2010

2011

2012

Thereafter

Total

Fair Value

Convertible subordinated notes
Fixed Rate . . . . . . . . . . . . .
Avg. Interest Rate . . . . . . . .

—

—

—

— $250,000

$249,998

$499,998

$500,650*

2.38% 2.38% 2.38% 2.38%

2.38%

2.38%

2.38%

*

The fair value of the remaining payments under  our  convertible subordinated notes is based on the market price
of similar instruments with similar convertible features.

69

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

PDL BIOPHARMA, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

December 31,

2007

2006

Assets
Current assets:

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restricted cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable, net of allowances of $17.7  million  and $13.7  million  at

December 31, 2007  and 2006, respectively . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assets held for sale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid and other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term restricted cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Land, property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other intangible assets, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax asset
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets

$ 340,634
25,005
71,880

$ 179,009
—
154,115

5,163
—
269,390
8,362

720,434
—
3,269
330,746
81,724
9,056
38,319
8,644

14,815
19,663
—
11,894

379,496
74,892
18,269
296,529
69,954
285,713
6,075
10,965

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,192,192

$1,141,893

Liabilities and Stockholders’ Equity
Current liabilities:

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Royalties payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current portion of other long-term debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible notes payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long-term deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other long-term debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total  liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8,893
27,222
5,967
33,838
7,171
38,319
678

122,088
499,998
27,647
34,849

684,582

$

13,478
21,123
4,780
45,925
13,443
6,075
1,239

106,063
499,998
31,366
36,925

674,352

Commitments and contingencies (Note 15)
Stockholders’ equity:

Preferred stock, par value $0.01 per share, 10,000  shares  authorized;  no shares  issued

and outstanding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—

—

Common stock, par value $0.01 per share, 250,000  shares  authorized; 117,577 and

115,006 shares issued and outstanding at December  31,  2007 and  2006, respectively .
Additional paid-in capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated other comprehensive loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1,176
1,098,251
(591,345)
(472)

1,150
1,037,846
(570,129)
(1,326)

Total stockholders’  equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

507,610

467,541

Total liabilities and stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,192,192

$1,141,893

See accompanying notes.

70

PDL BIOPHARMA, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)

Year Ended December 31,

2007

2006

2005

Revenues

Royalties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
License, collaboration and other . . . . . . . . . . . . . . . . . . . . . . . . .

$221,088
37,837

$ 184,277
64,792

$ 130,068
28,395

Total revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

258,925

249,069

158,463

Costs and expenses

Research and development
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
General and administrative . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Asset impairment charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

204,175
67,367
6,668
5,513

Total costs and expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

283,723

Operating loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest and other income, net . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loss from continuing operations before income taxes . . . . . . . .
Income tax expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(24,798)
19,362
(13,708)

(19,144)
247

209,311
53,317
—
900

263,528

(14,459)
17,704
(13,070)

(9,825)
941

156,049
35,330
—
15,769

207,148

(48,685)
9,616
(10,177)

(49,246)
47

Loss from continuing operations . . . . . . . . . . . . . . . . . . . . . . .

(19,391)

(10,766)

(49,293)

Discontinued operations, net of income  tax expense (benefit)  of

$221, $(174) and $821 for the years ended December 31,  2007,
2006 and 2005, respectively and 2005, respectively . . . . . . . . . .

(1,670)

(119,254)

(117,284)

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ (21,061) $(130,020) $(166,577)

Net loss per basic and diluted share

Continuing operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Discontinued operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net loss per share . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

$

(0.17) $
(0.01)

(0.09) $
(1.05)

(0.47)
(1.13)

(0.18) $

(1.14) $

(1.60)

Shares used to compute net loss per  basic and  diluted share . . . . .

116,365

113,571

104,326

See accompanying notes.

71

PDL BIOPHARMA, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

Cash flows from operating activities

Net loss
Adjustments to reconcile net loss to  net  cash provided by operating activities:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Acquired in-process research and development
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Asset impairment charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of convertible notes offering costs . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock-based compensation expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss on investment in marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss on disposal of equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tax  benefit from stock-based compensation arrangements . . . . . . . . . . . . . . . . . . . . .
Other non-cash research and development expenses . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changes in assets and liabilities:

Accounts receivable, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest  receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued liabilities
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other long-term liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total adjustments

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net cash provided by operating activities

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cash flows from investing activities

Purchases of marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maturities of marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maturities of restricted securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maturities of note receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment to goodwill related to ESP Pharma acquisition . . . . . . . . . . . . . . . . . . . . .
Cash paid for ESP Pharma acquisition, net of cash acquired . . . . . . . . . . . . . . . . . . . .
Cash paid of the acquisition of Retavase product . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase of intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sale of intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase of property and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from the sale of property and equipment
. . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer to restricted cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Year Ended December 31,

2007

2006

2005

$ (21,061)

$ (130,020)

$ (166,577)

—
5,513
32,150
2,344
32,341
20,578
—
763
—
—

9,652
1,169
(4,218)
3,531
(23)
(4,585)
(4,146)
2,956
(9,991)

88,034

66,973

(134,588)
291,083
—
—
—
—
—
—
—
(94,738)
20,903
(10,005)

—
74,650
30,816
2,345
44,854
23,648
—
74
879
—

4,301
(1,416)
(2,110)
15,622
(5,616)
10,750
30,215
4,002
(24,224)

208,790

78,770

(384,206)
301,930
6,829
30,000
—
—
—
(18,777)
2,750
(36,518)
269
(18,269)

79,417
31,269
15,126
2,214
37,557
970
302
7
—
1,500

(21,626)
323
923
(6,618)
(124)
(4,029)
10,772
—
50,144

198,127

31,550

(600)
147,660
6,876
—
(873)
(322,558)
(110,000)
—
—
(41,268)
—
—

Net cash provided by (used in) investing  activities . . . . . . . . . . . . . . . . . . . . . . . . . . .

72,655

(115,992)

(320,763)

Cash flows from financing activities

Proceeds from issuance of common stock, net  of cancellations
Proceeds from issuance of convertible  notes
Proceeds from financing of tenant improvements
Payments on other long-term debt

. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net cash provided by financing activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of the year

. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .

27,273
—
2,118
(7,394)

21,997

161,625
179,009

33,529
—
—
(675)

32,854

(4,368)
183,377

139,868
242,048
—
(721)

381,195

91,982
91,395

Cash and cash equivalents at end the year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 340,634

$ 179,009

$ 183,377

Supplemental Disclosure of Non-Cash Information

Cash paid during the year for interest
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cash paid during the year for income  taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-cash investing and financing activities:

Capitalization of facilities under financing lease transactions,  including accrued interest,

and corresponding long-term financing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Issuance of escrow shares to former ESP  stockholders . . . . . . . . . . . . . . . . . . . . . . .

$
$

$
$

12,449
162

1,549
12,580

$
$

$
$

12,431
914

25,117
12,700

$
$

$
$

9,994
365

—
—

See accompanying notes.

72

PDL BIOPHARMA, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(in thousands, except share data)

(In thousands, except shares of common stock  data)

Shares

Amount

Common Stock

Additional
Paid-In
Capital

Deferred
Stock-based
Compensation

Accumulated
Other
Accumulated Comprehensive Stockholders’
Income  (loss)

Deficit

Equity

Total

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

net

acquisition .

Balance at December 31, 2004
.
Issuance of common stock under employee benefit plans,
.
.
.
Issuance of common stock in connection with ESP Pharma
.
.
Issuance of common stock in connection with Biogen Ided
.
.
.
.

.
.
Stock-based compensation expense for employees .
.
.
Stock-based compensation expense for consultants
Issuance of common stock  in connection with release of
.

escrow shares from ESP Pharma acquisition .

collaboration agreement .

.
.
.

.
.
.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Comprehensive loss:
.

.

.

.

.

Net loss .
.
.
.
Change in unrealized gains and losses  on  investments in
.

available-for-sale securities .

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Total comprehensive loss

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

net

of SFAS 123(R)

Balance at December 31, 2005
.
Issuance of common stock  under  employee benefit plans,
.
.
.
Elimination of deferred stock compensation upon adoption
.
.
.
.

.
.
.
.
Stock-based compensation expense for employees .
Stock-based compensation expense for consultants
.
Issuance of common stock  in connection with release of
.
.

escrow shares from ESP Pharma acquisition .
.
Tax benefit from employee stock option exercises .
Comprehensive loss:
.

.
.
.
Net loss .
Change in unrealized gains and losses  on  investments in
.
.

.
Adjustments to initially apply SFAS 158,  net of tax .

available-for-sale securities .

.
.
.

.
.
.

.
.

.
.

.
.

.
.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Total comprehensive loss

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

net

.
Balance at December 31, 2006
Issuance of common stock  under  employee benefit plans,
.
.
.
.
.
Stock-based compensation expense for employees .
Stock-based compensation expense for consultants
.
Issuance of common stock  in connection with release of
.
.

escrow shares from ESP Pharma acquisition .
.
.
.

.
.
.

.
.
.

.
.

.
.

.
.

.
.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.
.
.

.
.

Adoption of FIN 48 .
Comprehensive loss:
.

.

.

.

.

Net loss .
.
.
.
Change in unrealized gains and losses  on  investments in
.

available-for-sale securities .

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Change in postretirement liability not  yet  recognized as
.
.

net period expense .

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Total comprehensive loss

.

.

.

Balance at December 31, 2007

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.
.
.

.

.

.

.

95,857,236

$ 959

$ 686,302

$ —

$(273,532)

$(1,219)

$ 412,510

3,554,878

7,330,182

4,058,935
—
—

1,260,842

—

—

—

35

73

41
—
—

13

—

—

—

42,091

(2,258)

104,778

99,959
—
710

35,278

—

—

—

—

—
260
—

—

—

—

—

—

—

—
—
—

—

(166,577)

—

—

—
—
—

—

—

—

—

(848)

—

39,868

104,851

100,000
260
710

35,291

(166,577)

(848)

(167,425)

. 112,062,073

$1,121

$ 969,118

$(1,998)

$(440,109)

$(2,067)

$ 526,065

.

.
.
.

.
.

.

.
.

.

2,542,779

—
—
—

401,408
—

—

—
—

—

25

—
—
—

4
—

—

—
—

—

33,504

(1,998)
23,383
264

12,696
879

—

—
—

—

—

1,998
—
—

—
—

—

—
—

—

—

—
—
—

—
—

(130,020)

—

—
—
—

—
—

—

—
—

—

1,599
(858)

—

33,529

—
23,383
264

12,700
879

(130,020)

1,599
(858)

(129,279)

. 115,006,260

$1,150

$1,037,846

$ —

$(570,129)

$(1,326)

$ 467,541

2,065,352
—
—

505,650
—

—

—

—

.
.
.

.
.

.

.

.

.

21
—
—

5
—

—

—

—

27,252
20,513
65

12,575
—

—

—

—

—
—

—
—

—

—

—

—
—

—
(155)

(21,061)

—

—

—
—

—
—

—

536

318

27,273
20,513
65

12,580
(155)

(21,061)

536

318

(20,207)

. 117,577,262

$1,176

$1,098,251

$ —

$(591,345)

$ (472)

$ 507,610

See accompanying notes.

73

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2007

1. ORGANIZATION AND BUSINESS

We  are a biopharmaceutical company  focused on  the discovery and development of novel
antibodies in oncology and immunologic  diseases.  We receive royalties and other revenues through
licensing agreements with numerous  biotechnology and pharmaceutical companies based on  our
proprietary antibody humanization technology  platform. These licensing agreements have contributed to
the development by our licensees of nine  marketed  products. We  currently have several investigational
compounds in clinical development for severe or life-threatening diseases, two of which  we are
developing in collaboration with Biogen Idec MA,  Inc. (Biogen  Idec). Our research platform is focused
on the discovery of novel antibodies  for  the treatment of cancer and immunologic diseases. We  began
marketing and selling acute-care products  in the  hospital setting  in the United States and Canada in
March 2005, however, in August 2007  we  began  the process  of  divesting each of our commercial
products and had completely divested  these assets as of March 7, 2008.

On August 28, 2007, in connection with a months-long evaluation of strategic alternatives

conducted by our management and Board  of Directors, we  announced our intent  to  sell our
commercial  and  cardiovascular  assets,  which  were  comprised  of  our Cardene(cid:5), Retavase(cid:5) and
IV Busulfex(cid:5) commercial products and our ularitide development-stage cardiovascular product
(together, our Commercial and Cardiovascular  Assets). The decision to pursue a  sale of these assets
was related to a significant strategic  change to focus  the Company  on the discovery and development of
novel antibodies in oncology and immunologic diseases. Given  the change in  our strategic direction and
the current timing of our pipeline products, we  determined that  our commercial products  and
cardiovascular development programs,  which are not antibody-based products, were no  longer a
strategic fit.

We  subsequently announced on October  1, 2007 that we were seeking the sale of our entire
Company or of our key assets, which  decision  was  in connection  with our ongoing evaluation of
strategic alternatives.

In December 2007, we signed a definitive agreement  with Otsuka Pharmaceutical  Co.,  Ltd.
(Otsuka) for the sale of our IV  Busulfex product for $200 million in cash consideration. This was the
first transaction following our decision,  announced on October 1, 2007, to actively pursue  the sale  of
our  entire Company or of our key assets. In February 2008, we entered into a definitive agreement for
the sale of our Cardene, Retavase and ularitide products (together, our  Cardiovascular Assets) to EKR
Therapeutics, Inc. (EKR) for an upfront  payment of $85 million, up to $85 million in development and
sales milestone payments, as well as royalties on certain  future product sales. We  closed  the sales of the
IV Busulfex and Cardiovascular Assets products in March  2008.

Also, in February 2008, we entered into an asset purchase agreement for the sale of our Minnesota
manufacturing facility and related operations to GMN, Inc.,  a wholly owned subsidiary of Genmab A/S
(Genmab), for total cash proceeds of $240  million. Under the terms  of this agreement, Genmab would
acquire our manufacturing and related  administrative facilities in Brooklyn Park, Minnesota, and all
assets therein, as well as certain of our lease obligations related to our facilities in  Plymouth,
Minnesota (together, the Manufacturing Assets).  In addition, Genmab plans to retain the
approximately 170 employees currently  working  at the  manufacturing facility. In connection with this
transaction, Genmab would produce  clinical  material to supply certain of  our pipeline products for  our
investigational studies under a clinical  supply agreement. We expect to close this transaction during the
first quarter of 2008.

74

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

1. ORGANIZATION AND BUSINESS (Continued)

In March 2008, we announced that we had  ended the sale process for the Company  or our
biotechnology discovery and development assets.  While  we had actively pursued a  sale of the entire
Company or our key assets since we  announced our intent to do so  in October 2007, we had not
received any firm offers for the Company  as a  whole or for our  biotechnology assets.

We  were organized as a Delaware corporation in 1986 under the name  Protein Design Labs, Inc.

In 2006, we changed our name to PDL BioPharma, Inc.

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES

Basis of Preparation

The accompanying financial statements  have been prepared in accordance with accounting

principles generally accepted in the United States of America and pursuant  to  the rules and regulations
of the Securities and Exchange Commission  (SEC).

During  the fourth quarter of 2007, based on the interest  and related offers we received  for our

Commercial and Cardiovascular Assets, we  elected to proceed with the sale our Commercial and
Cardiovascular Assets separate from the  sale of the entire Company. Therefore, in accordance with
Statement of Financial Accounting Standards (SFAS) No. 144, ‘‘Accounting for the Impairment or
Disposal of Long-lived Assets’’ (SFAS  No.  144), we  classified our Commercial and Cardiovascular
Assets, including product rights intangible assets  and  related fixed assets, as ‘‘held for sale’’  on the
Consolidated Balance Sheet. In addition, since we  expect to have no significant or direct involvement in
the future operations related to these  assets after the closing date of the sales in March 2008, the
results of the Commercial and Cardiovascular Operations segment, which operations are comprised of
those related to the Commercial and Cardiovascular Assets, have been presented as discontinued
operations. Discontinued operations are reported  as  a separate component within  the Consolidated
Statement of Operations outside of loss from continuing operations. For  details of such amounts, see
Note 6.

These financial statements are prepared on a going concern basis and may  not  be  representative of

the earnings and value of the Company  if assets are sold separately.

Principles of Consolidation

The consolidated financial statements include the accounts  of PDL BioPharma, Inc. and its wholly-

owned subsidiaries after elimination of intercompany accounts and transactions.

Reclassifications

We  reclassified certain costs previously  included  in  research and development expenses to general

and administrative expenses in 2006.  Such  amounts  primarily relate to certain of our clinical affairs
costs that are more appropriately classified as general  and administrative expenses. The impact of this
reclassification decreased research and  development expenses and increased general and administrative
expenses in 2006 by $12.9 million. The reclassification had no impact on our  total operating expenses
or our net losses for 2006. In addition, certain  reclassifications of prior years’  amounts have been made
to conform to the current year presentation in our  Consolidated Balance Sheet  as of December 31,
2006.

75

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

Management Estimates

The preparation of financial statements in conformity with GAAP requires the use  of

management’s estimates and assumptions that  affect the amounts reported in the financial statements
and accompanying notes. Actual results could differ  from those estimates.

Segment Disclosures

In accordance with SFAS No. 131, ‘‘Disclosure About Segments of  an Enterprise and Related

Information,’’ we are required to report  operating segments and  make related disclosures about our
products, services,  geographic areas and  major customers. Our chief operating  decision-maker  is
comprised of our executive management. Our chief operating decision-maker reviews our operating
results and operating plans and makes  resource  allocation decisions on a company-wide or aggregate
basis. As of December 31, 2007, we operated  as  one segment. During 2007, we operated as two
operating segments, our Commercial and Cardiovascular Operations and our Antibody-Based
Operations. Our Commercial and Cardiovascular Operations included  financial  results related to our
Commercial and Cardiovascular Assets as  well as all revenues and costs and expenses related to
previously owned commercial products  (Declomycin, Sectral, Ismo and Tenex) and development  costs
related to terlipressin, a development program  that we  terminated  in 2006, all of which we  acquired in
connection with the acquisition of ESP  Pharma, Inc. in March 2005,  the purchase of rights to the
Retavase product in March 2005 and the purchase of certain Cardene rights from Roche in September
2006. Our Antibody-Based Operations  represented the remainder of our operations.

The financial results for our Commercial  and  Cardiovascular Operations have been presented as

discontinued operations in the Consolidated Statement of  Operations and the assets associated with
this  segment have  been reported as ‘‘Assets held for  sale’’  on the Consolidated Balance Sheet.
Therefore, the continuing operations  constitute one segment as of the end of 2007.

Our facilities are located primarily within the  United States.

Cash Equivalents, Restricted Cash, Marketable Securities  and  Concentration of  Credit Risk

We  consider all highly liquid investments with  initial maturities of three months or less at  the date

of purchase to be cash equivalents. We  place  our  cash, cash equivalents, marketable securities and
restricted cash and investments with high-credit-quality financial institutions and  in securities  of  the
U.S. government, U.S. government agencies and U.S. corporations and, by policy, limit the amount of
credit exposure in any one financial instrument.

Inventories

Inventories are stated at the lower of  cost or market, with costs  approximating  the first-in,  first-out

method. When the inventory carrying value exceeds the net  realizable value, reserves  are recorded for
the difference between the cost and the net  realizable value. These reserves  are determined based on
management’s estimates. Inventories consist of  finished  goods,  work-in-process  and raw materials
(including active pharmaceutical ingredients)  and, as  of December 31, 2007,  related solely  to  our
Commercial and Cardiovascular Operations.  As a result, inventories have  been classified as assets held
for sale on our Consolidated Balance Sheet as of December 31,  2007.

76

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

Inventories consisted of the following:

(In thousands)

December 31,

2007

2006

Raw materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Work-in-process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finished goods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 8,378
7,384
8,120

$ 9,689
5,286
4,688

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$23,882

$19,663

Revenue Recognition

We  recognize revenues resulting from product  sales, from  licensing and use of our technology,
from research and development (R&D) services and from other services we sometimes  perform in
connection with the licensed technology under the  guidance of Staff  Accounting Bulletin  (SAB)
No. 104, ‘‘Revenue Recognition.’’ Royalty,  licensing and other revenues are typically  derived from our
proprietary patent portfolio covering  the  humanization of antibodies for use as drugs,  in drug
development and production. All revenues  resulting from product sales have been  presented  as
discontinued operations (see Note 6).

Revenues, and their respective accounting treatment  for financial reporting purposes,  are as

follows:

Product Sales

We  recognize revenues from product  sales when  there is persuasive evidence that an  arrangement
exists, title passes,  the price is fixed and determinable, and collectibility is reasonably assured. Product
sales are recognized net of estimated  allowances, discounts,  sales  returns, chargebacks and  rebates.

Royalties

Under most of our patent license agreements, we receive  royalty payments  based upon our
licensees’ net sales of covered products.  Generally, under  these  agreements we receive royalty reports
from our licensees approximately one quarter in  arrears; that is,  generally in the second  month of the
quarter after the licensee has sold the royalty-bearing  product. We recognize royalty  revenues when we
can reliably estimate such amounts and collectibility is reasonably  assured. Accordingly,  we recognize
royalty revenues in the quarter reported to us by our  licensees (i.e., generally royalty revenues are
recognized one quarter following the quarter in which sales  by our licensees occurred).

License, Collaboration and Other Revenues

We  include revenues recognized from upfront licensing  and license maintenance  fees,  milestone

payments and reimbursement of development expenses in license, collaboration  and other  revenues in
our  Consolidated Statements of Operations.

77

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

Upfront License and License Maintenance Fees

Generally there are three types of collaboration  arrangements PDL enters into under which  we

provide access to our proprietary patent portfolio covering the humanization of antibodies.

(cid:127) Under patent license agreements, the licensee typically obtains  a non-exclusive license to one or
more of our patents. In this arrangement, the licensee is responsible for all of the development
work on its product. The licensee has the  technical  ability to perform the humanization of the
antibody it is developing using our patented technology, but  needs to obtain a license from us to
avoid infringing our patents. We have no future  performance obligations under these
agreements. Consideration that we receive  for patent license agreements is recognized upon
execution and delivery of the patent license agreement and when payment is reasonably assured.
If the agreements require continuing involvement  in  the form of development, manufacturing or
other commercialization efforts by us, we recognize revenues either (a) ratably over the
development period if development risk  is significant, or (b) ratably over  the manufacturing
period or estimated product useful life if development risk has  been substantially eliminated.

(cid:127) Under patent rights agreements, the licensee purchases  a research patent license  in exchange for
an upfront fee. In addition, the licensee  has the right  to  obtain, in exchange for consideration
separate from the upfront fee, patent licenses  for commercial purposes for a  specified number of
drug targets to be designated by the licensee subsequent to execution of the agreement. The
licensee performs all of the research, and  we have no further performance obligations with
respect to the research patent license  and the grant of the  right to obtain  commercial patent
licenses; therefore, upon delivery of the patent rights  agreement, the earnings  process is
complete. When a licensee exercises its right to obtain  patent licenses to certain designated  drug
targets for commercial purposes, we recognize the related consideration as revenues upon  the
licensee’s exercise of such right, execution and  delivery of the associated patent license
agreement and when payment is reasonably  assured.

(cid:127) Under our humanization agreements, the licensee typically pays an upfront fee for us to
humanize an antibody. These upfront fees are  recognized as the humanization work  is
performed, which is typically over three to six months, or upon  acceptance of the humanized
antibody by our licensee if such acceptance clause  exists in the agreement.

(cid:127) Under patent license agreements and humanization agreements, we  may also receive annual

license maintenance fees, payable at the election of the  licensee to maintain the license in  effect.
We  have no performance obligations  with  respect to such fees. Maintenance fees are recognized
as they are due and when payment is reasonably assured.

Milestones

We  enter into patent license and humanization agreements that may contain milestones related to

reaching particular stages in product development. We recognize ‘‘at risk’’ milestone payments upon
achievement of the underlying milestone  event and when  they are due and payable  under the
arrangement. Milestones are deemed to be ‘‘at  risk’’ when, at the onset of an arrangement,
management believes that they will require a reasonable  amount of effort to be achieved and are not
simply reached by the lapse of time or through a  perfunctory effort. Milestones which are not deemed

78

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

to be ‘‘at risk’’ are recognized as revenue  in the same  manner as  up-front payments..  Generally, there
are four types of agreements under which  a customer  would owe us a milestone payment:

(cid:127) Humanization agreements provide  for  the payment of certain milestones to us after the

completion of services to perform the humanization process. These milestones generally include
delivery of a humanized antibody meeting  a certain binding affinity and, at the customer’s
election, delivery of a cell line meeting certain  criteria described in the original agreement.

(cid:127) Patent license agreements and humanization  agreements sometimes require our  licensees to

make milestone payments to us when they  achieve  certain progress,  such as  FDA approval,  with
respect to the licensee’s product.

(cid:127) We may also receive certain milestone payments  in connection with licensing technology to or
from our licensees, such as product licenses. Under these agreements, our licensees  may make
milestone payments to us when they or we achieve certain levels  of  development with  respect to
the licensed technology.

R&D Services

Amounts received from our collaboration partners are  recognized  as revenue as the related
services are performed. In certain instances, our  collaboration agreements involve a combination of
upfront fees, milestones and development  costs  where we  are not able to establish fair value of  all  of
the undelivered elements. In those cases, we recognize these upfront fees, milestones  and
reimbursements of development costs as  the services are performed.

Accounts Receivable, Sales Allowances and  Rebate Accruals

Accounts receivable are recorded net of allowances for cash  discounts for prompt payment,
doubtful accounts, chargebacks, wholesaler  rebates and sales returns. Estimates for chargebacks and
cash discounts are based on contractual terms, historical  utilization  rates and expectations regarding
future utilization rates for these programs. Estimates for wholesaler rebates are based on a certain
percentage of sales per wholesaler contract terms. Estimates for product returns are  based on an
on-going analysis of industry and historical return patterns, monitoring  the feedback that we receive
from our sales force regarding customer  use and satisfaction, reviewing channel inventory data available
to us and reviewing third-party data purchased in order  to  monitor the sell-through of our products.
Further, we monitor the activities and clinical trials of our key competitors  to  assess the potential
impact on our future sales and return  expectations. We base our allowance for doubtful accounts on
our  analysis of several factors, including contractual  payment terms, historical payment patterns of our
customers and individual customer circumstances,  an analysis of days sales outstanding by customer and
geographic region, and a review of the  local economic environment and its potential impact on
government funding and reimbursement  practices.  If the financial condition of our customers  or the
economic environment in which they operate were to deteriorate, resulting in an inability  to  make
payments, additional allowances may  be  required.

Accrued rebates include amounts due under Medicaid and other commercial contractual rebates.

Rebates are recorded in the same period that the  related revenues are recognized resulting in a
reduction of product sales revenues and  the establishment of a liability included in other accrued
liabilities. Accrued rebates are recorded  based on contractual terms, historical utilization  rates and

79

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

expectations regarding future utilization rates for these  programs. Medicaid rebate accruals are
evaluated based on historical rebate payments by  product  as a percentage of  historical sales, product
pricing and current contracts. Our product returns allowance is calculated based on a percentage of
total sales. Actual results may differ from our estimates and could  impact  our earnings in any period in
which  an adjustment is made.

Since our acquisitions of ESP Pharma and rights to the Retavase product, we have adjusted our

allowances for product returns, chargebacks and rebates  based on more recent experience. In  June
2006, based on product returns experienced  in the quarter, additional visibility into channel inventory
levels and activity  and enhancements made to our estimation process, we  changed our estimates for
product  sales returns to better reflect  the projected  future level of returns.  The effect of this change in
estimate was to reduce net product sales in June 2006 by approximately $5.6 million, which increased
net loss per basic and diluted share by approximately $0.05 for  the  year ended December  31, 2006. In
addition, in June 2007, based on product return trends,  we  again  revised our  estimates for product sales
returns. The effect of this change in  estimate was to reduce net  product sales during the second quarter
of 2007 by approximately $2.6 million,  which increased  net loss  per  diluted share  by  approximately
$0.02 for the year ended December 31,  2007. Such amounts  are  presented as  discontinued operations.

Advertising and Promotional Expenses

We  engage in promotional activities,  which typically take the form  of  industry  publications, journal
ads, exhibits, speaker programs, and other forms of  media. Advertising  and promotion  expenditures are
expensed as incurred. These expenses  for the years ended December 31, 2007, 2006 and 2005  were
$19.6 million, $19.5 million and $9.3  million, respectively.

Shipping and Handling

We  record costs related to shipping and  handling  of  revenue-generating products in cost of product

sales.

Clinical Trial Expenses

We  base our cost accruals for clinical trials on estimates of the services  received and efforts
expended pursuant to contracts with numerous clinical trial centers and clinical research organizations
(CROs). In the normal course of business, we  contract with third parties to perform various clinical
trial activities in the ongoing development of potential  drugs. The financial terms  of these  agreements
vary from contract to contract, are subject to negotiation  and  may  result in uneven payment  flows.
Payments under the contracts depend  on factors such as the achievement  of certain events, the
successful accrual of patients or the completion of portions of the clinical trial or similar  conditions.
The objective of our accrual policy is to match the recording of expenses in  our financial statements to
the actual services received and efforts  expended. As such, we recognize direct  expenses related to each
patient enrolled in a clinical trial on  an estimated cost-per-patient basis as services are  performed. In
addition to considering information from our  clinical operations group regarding the status of our
clinical trials, we rely on information from CROs, such as estimated costs  per  patient,  to  calculate our
accrual  for direct clinical expenses at the  end of each reporting period. For indirect  expenses, which
relate to site and other administrative costs to manage our  clinical  trials,  we rely on information
provided by the CRO, including costs incurred  by the  CRO as of a particular reporting date,  to

80

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

calculate our indirect clinical expenses. In  the event of  early termination of a  clinical trial, we accrue an
amount based on our estimate of the remaining non-cancelable obligations associated with the winding
down of the clinical trial, which we confirm directly  with  the CRO. Our estimates and assumptions
could differ significantly from the amounts  that we actually may incur.

Research and Development

Major components of research and development expenses  consist of personnel costs, including
salaries and benefits, clinical development performed by  us and CROs, preclinical work, pharmaceutical
development, materials and supplies,  payments related to work completed for us  by  third-party research
organizations and overhead allocations consisting of various administrative and facilities related  costs.
All research and development costs are  charged to expense  as incurred.

Comprehensive Loss

Comprehensive loss is comprised of net loss and  other  comprehensive income (loss). Specifically,
we include in other comprehensive loss  the changes in unrealized gains and losses  on our holdings of
available-for-sale securities, which are excluded  from our net loss. In  2006 and 2007, other
comprehensive loss also included the  liability  that has  not  yet been recognized as net periodic benefit
cost for our postretirement benefit plan in accordance with SFAS No. 158, ‘‘Employers’ Accounting for
Defined Benefit Pension and Other Postretirement Plans—an amendment of Financial Accounting
Standards Board (FASB) Statements No.  87, 88, 106,  and  132(R)’’ (SFAS  No. 158), which we adopted
during the fourth quarter of 2006. Our comprehensive  loss  for the years ended December 31, 2007,
2006 and 2005 is reflected in the Consolidated Statements of Stockholders’ Equity.

The components of other comprehensive  loss were as follows:

(In thousands)

December 31.

2007

2006

Net unrealized gains (losses) on securities  available-for-sale . . . . . .
Unrecognized net  periodic benefit costs . . . . . . . . . . . . . . . . . . . .

$ 67
(539)

$ (468)
(858)

Accumlated other comprehensive loss . . . . . . . . . . . . . . . . . . . .

$(472) $(1,326)

Capitalized Software

Pursuant to SOP 98-1, we recognize costs incurred  in the preliminary planning phase of software

development as expense as the costs are incurred. Software development  costs incurred in the
application development phase are capitalized and are included  in property and equipment. For  the
years ended December 31, 2007, 2006 and 2005,  we capitalized  software development costs of
$4.1 million, $7.0 million and $3.7 million,  respectively. Once the developed software  is placed into
service, these costs are amortized over  the estimated useful  life  of the software.

Foreign Currency Translation

The U.S. dollar is the functional currency for  our French subsidiary.  All foreign currency gains and

losses are included in interest and other  income,  net, in the accompanying Statements of Operations
and have not been material.

81

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

Land, Property and Equipment

Land, property and equipment are stated at  cost less accumulated  depreciation and amortization.

Depreciation and amortization are computed using the  straight-line method over the following
estimated useful lives:

Buildings and improvements . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . .
Laboratory and manufacturing equipment . . .
Computer and office equipment . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . .

20 years
Shorter of asset life or term of lease
7  years
3 years
7  years

Capitalization of Interest Cost

We  capitalize a portion of our interest on borrowings in  connection with significant capital

expenditures. Of total interest cost incurred of $16.8 million, $14.8 million and $14.1 million during the
years ended December 31, 2007, 2006 and 2005, we  capitalized  interest of  $3.1 million, $1.7 million and
$3.9 million, respectively.

Intangible and Other Long-Lived Assets

At December 31, 2007 and 2006, our intangible  assets consisted of  purchased core technology,

product  rights and assembled workforce. In accordance with  SFAS  No. 142,  ‘‘Goodwill  and Other
Intangible Assets,’’ (SFAS No. 142),  we are amortizing  our intangible assets with  definite lives over
their estimated useful lives and review  them  for impairment  when events or changes in  circumstances
indicate that the carrying amount of such assets  may not be recoverable. We are  amortizing the
purchased core technology, which relates  to  our  daclizumab product, over its estimated useful life of
ten years and the assembled workforce asset,  which we acquired  in connection with our acquisition of
Eos Biotechnology, Inc. (Eos) in 2003, is completely amortized.  Amortization of intangible  assets is
included in research and development expenses in the Consolidated Statement of  Operations. Our
product  rights assets, which are related to our  Commercial and  Cardiovascular Operations,  were
classified as ‘‘held for sale’’ as of December 31, 2007. The amortization  expenses related to these assets
that were incurred prior to December 1, 2007, the date on  which we designated  them as ‘‘held for
sale,’’ are classified as discontinued operations.

In accordance with SFAS No. 144, we  identify and record impairment  losses, as circumstances
dictate, on long-lived assets used in operations when events and circumstances indicate that the assets
might be impaired and the discounted  cash flows estimated  to  be  generated by those assets are less
than the carrying amounts of those assets.

Goodwill

In March 2005, we recorded goodwill  in connection with  our acquisition of  ESP Pharma. We have

tested goodwill for impairment using a two-step  process on an annual basis and  between  annual tests
under certain circumstances. Factors that  are  considered important when evaluating whether
impairment might exist include a significant changes in  our business strategy. Goodwill is deemed to be
impaired if the carrying amount of a reporting unit’s goodwill exceeds  its estimated fair  value. We have
allocated all of our goodwill to the Commercial and Cardiovascular Operations and,  as of

82

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

2. SUMMARY OF SIGNIFICANT ACCOUNTING  POLICIES (Continued)

December 31, 2007, we have not recognized any goodwill impairment charges.  See Note 6 for further
details on our impairment analyses.

3. STOCK-BASED COMPENSATION

Effective January 1, 2006, we adopted SFAS  No.  123, ‘‘Share-Based Payment (Revised 2004)’’
(SFAS No. 123(R)), which supersedes our previous accounting under Accounting Principles Board
Opinion No. 25, ‘‘Accounting for Stock  Issued to Employees’’  (APB 25), and related interpretations.
SFAS No. 123(R) requires the recognition  of compensation expense, using a fair-value based method,
for costs related to all share-based awards  including  stock options and stock issued to our employees
and directors under our stock plans. It requires  companies to estimate the fair value of  share-based
awards on the date of grant using an option-pricing model. The value of the portion of the award that
is ultimately expected to vest is recognized as expense on a straight-line basis over the  requisite service
periods in our Consolidated Statements  of Operations.

We  have adopted the simplified method to calculate the beginning balance of the  additional
paid-in-capital (APIC) pool of the excess tax  benefit and  to determine the subsequent effect on  the
APIC pool and Consolidated Statements of Cash Flows of the tax  effects of employee stock-based
compensation awards that were outstanding upon our adoption of SFAS No. 123(R).

We  also account for stock options granted to persons  other than employees or directors at fair
value. Stock options granted to non-employees are  subject to periodic remeasurement over their vesting
terms. We recognize the resulting stock-based compensation expense during the service period over
which  the non-employee provides services to us.  The  stock-based compensation  expense related to
non-employees for the years ended December 31, 2007, 2006 and 2005 was $0.1 million, $0.3 million
and $0.7 million, respectively.

Stock-Based Incentive Plans

We  have four active stock-based incentive plans under  which  we may grant stock-based awards to

our  employees, officers, directors and consultants.  The total number of shares of common stock
authorized for issuance, shares of common stock issued upon exercise of options or as restricted stock
that have vested and are no longer subject to forfeiture,  subject to outstanding awards and available  for
grant under each of these plans as of  December 31, 2007, is set forth in the table below:

Title of Plan

Total Shares of
Common Stock
Authorized

Total Shares of
Common Stock
Issued

Total Shares of
Common Stock
Subject  to
Outstanding Awards

Total Shares  of
Common  Stock
Available for
Grant

1999 Stock Option  Plan . . . . . . . . . . . .
1999 Nonstatutory Stock Option Plan . . .
2002 Outside Directors Stock Option

Plan . . . . . . . . . . . . . . . . . . . . . . . .
2005 Equity Incentive  Plan . . . . . . . . . .
1991 Nonstatutory Stock Option Plan(2) .

9,581,793
11,000,000

480,000
5,200,000
14,118,207

2,875,403
4,413,845

5,062,898
6,054,933

61,250
324,263(1)

13,416,188

313,500
2,822,372

702,019(3)

1,643,492
531,222

105,250
2,086,365
—

(1)

Includes 208,225 restricted shares of  our common  stock  that  had  not  vested  and  that  were subject  to
forfeiture as of December  31, 2007.

83

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

3. STOCK-BASED COMPENSATION  (Continued)

(2) This plan expired in 2001 and we no  longer may  grant awards under  this  plan.

(3) These shares of common stock are subject  to  options  that were  granted  before  the  1991 Nonstatutory  Stock
Option Plan expired. All  of the shares subject  to  these options  are  vested.  Shares  subject to options that are
cancelled or expire without being exercised  will  automatically  be added to the  number of shares  of common
stock authorized for issuance under our 1999  Stock Option  Plan.

Under our 2005 Equity Incentive Plan, we  are authorized to issue a variety  of incentive awards,

including stock options, stock appreciation rights,  restricted  stock unit awards,  performance share and
performance unit awards, deferred compensation  awards and other stock-based or cash-based awards.
Under our 1999 Stock Option Plan, 1999  Nonstatutory Stock  Option Plan and 2002 Outside  Directors
Stock Option Plan, we are only authorized  to  issue stock options.

Our 2002 Outside Directors Stock Option Plan provides for the automatic grant of stock  options
to outside directors upon appointment  and annually after our annual meeting of stockholders. Stock
options granted under our 2002 Outside  Directors Stock Option Plan generally vest monthly  over one
year after the date of grant.

Stock options granted to employees under our plans in  connection with  the start  of employment
customarily vest over four years with  25% of the shares subject  to  such an option vesting on the  first
anniversary of the grant date and the remainder of the stock  option vesting monthly after the  first
anniversary at a rate of one thirty-sixth of  the remaining nonvested  shares subject to the  stock option.
Stock options granted to employees as  additional incentive and  for performance reasons after the start
of employment customarily vest monthly  after the grant date or such other vesting start date  set by the
company on the grant date at a rate of one forty-eighth of the shares subject to the option. Each
outstanding stock option granted prior to mid-July 2005  has a term of 10 years. Stock  options  granted
after mid-July 2005 have a term of seven  years.

Employee Stock Purchase Plan

In addition to the stock-based incentive plans described above,  we adopted the 1993 Employee
Stock Purchase Plan (ESPP), which is intended to qualify  as an ‘‘employee  stock  purchase  plan’’ under
Section 423 of the Internal Revenue Code of  1986, as amended. Full-time employees  who own less
than 5% of our outstanding shares of  common stock are eligible to contribute a percentage of their
base salary, subject to certain limitations,  over the course of six-month offering periods for the
purchase of shares of common stock.  The purchase price  for  shares of common  stock purchased under
our  ESPP equals 85% of the fair market value  of  a share  of common stock at  the beginning or end  of
the relevant six-month offering period, whichever  is lower. Of the 2,900,000 shares authorized  for
issuance under our ESPP, as of December 31, 2007,  2,376,011 have been issued and 523,989 remain
available for future issuance. The stock-based compensation expense  recognized  in connection  with our
ESPP for the years ended December  31,  2007 and  2006 was $1.6  million  for each year.

Prior  to  the Adoption of SFAS No. 123(R)

Prior to the adoption of SFAS No. 123(R), we accounted for stock-based  awards under the
intrinsic value method, which followed the  recognition and measurement  principles  of  APB 25 and
related interpretations. Accordingly, we  did not recognize compensation expense in our  Consolidated
Statements of Operations with respect to options  awarded to  our employees and directors  with exercise
prices greater than or equal to the fair  value of the  underlying  common  stock on the  date of grant.

84

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

3. STOCK-BASED COMPENSATION  (Continued)

However, we did recognize compensation expense  in our Consolidated Statements of Operations with
respect to the modification of certain employee stock  option awards and the issuance of restricted stock
to certain employees.

The table below illustrates the effect  on  net loss and net  loss per share if we had applied the fair
value recognition provisions of SFAS No.  123, ‘‘Accounting for  Stock-Based Compensation,’’ (SFAS 123)
as amended to our stock-based compensation  plans prior to the adoption of SFAS No. 123(R). For
purposes  of this pro forma disclosure,  the value  of the options was estimated using the Black-Scholes
option-pricing model.

(In thousands, except per share data)

Net loss, as reported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Add: Total stock-based employee compensation  expense included in

Year Ended
December 31,
2005

$(166,577)

net loss, net of taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

640

Deduct: Total stock-based employee compensation expense

determined under fair value based method for all awards, net of
taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(20,472)

Pro forma net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(186,409)

Basic and diluted net loss per share:

As reported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pro forma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$
$

(1.60)
(1.79)

Adoption of SFAS No. 123(R)

We  calculate stock-based compensation  expense based  on the number of awards ultimately

expected to vest, net of estimated forfeitures.  SFAS No. 123(R) requires us  to  estimate forfeiture rates
at the time of grant and revise such rates, if necessary, in  subsequent periods if actual  forfeitures  differ
from those estimates. We adopted SFAS No.  123(R)  using the modified prospective application
transition method, which requires that we  recognize compensation expense in our consolidated financial
statements for all awards granted to  employees and  directors after the  date of adoption  as well as  for
existing awards for which the requisite  service  has not been rendered  as of the date of adoption. Upon
adopting SFAS No. 123(R), we changed  from the  multiple-option  approach to the single-option
approach to value stock-based awards with a measurement date on  or  subsequent to January 1, 2006.
In addition, we are amortizing the fair value  of  these  awards using the  straight-line attribution method.
We  continue to expense the nonvested awards granted  prior  to  January 1,  2006 under  the multiple-
option approach with graded-vesting attribution.  In  addition, in connection with the  adoption  of SFAS
No. 123(R), we eliminated the remaining  balance of the  deferred  stock-based compensation against
APIC.

85

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

3. STOCK-BASED COMPENSATION  (Continued)

Stock-based compensation expense recognized under  SFAS No. 123(R) for employees and directors

was as follows:

(in thousands, except per share amounts)

Research and development . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative . . . . . . . . . . . . . . . . . . . . . . .
Discontinued operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total stock-based compensation expense . . . . . . . . . . . . . . . . .
Tax  benefit related to stock-based compensation . . . . . . . . . . . . .

Years Ended
December 31.

2007

2006

$10,285
5,380
4,848

20,513
—

$12,138
7,493
3,752

23,383
—

Increase in net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$20,513

$23,383

Effect on net loss  per basic and diluted share . . . . . . . . . . . . . .

$

0.18

$

0.21

Valuation Assumptions

The stock-based compensation expense recognized under SFAS No.  123(R)  for the  years  ended

December 31, 2007 and 2006 and presented in the  pro forma  disclosure required  under SFAS  123 for
the year ended December 31, 2005 was determined using the Black-Scholes option  valuation model.
Option valuation models require the input  of  subjective assumptions and these assumptions can vary
over time. The weighted-average assumptions used were as follows:

Years Ended
December 31,

2007

2006

2005

Stock Option Plans
Expected life, in years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Risk free interest rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Volatility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dividend yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . —

3.1

4.0
4.0
4.5% 5.0% 3.7%
47% 63%
38%
—

—

Employee Stock Purchase Plans
Expected life, in years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Risk free interest rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Volatility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dividend yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . —

0.5

0.5
0.5
5.1% 4.8% 3.4%
43% 42%
38%
—

—

Our expected term represents the period that we expect  our stock-based awards to be outstanding,

which  we determined based on historical experience of similar  awards, the contractual terms of the
stock-based awards, vesting schedules  and  expectations of future  optionee behavior  as influenced by
changes to the terms of stock-based awards. We base expected volatility on both  the historical  volatility
of our common stock and implied volatility derived from the market prices  of traded  options of  our
common stock. We base the risk-free  interest rate on  the implied yield available on  U.S. Treasury
zero-coupon issues with a remaining term equal  to  the expected term of our options at the time of
grant. We have not issued any dividends  and do not have a plan in place to pay any cash  dividends  in

86

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

3. STOCK-BASED COMPENSATION  (Continued)

the foreseeable future. We therefore  have assumed a  dividend yield of zero  for purposes of these fair
value estimations.

Stock Option Activity

A summary of our stock option activity  for the years ended December  31, 2007,  2006 and 2005 is

presented below.

(In thousands, except per share data)

Outstanding at beginning of year . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . .

2007

2006

2005

Weighted-
Average
Exercise
Price

$18.79
21.92
13.69
21.58

Shares

14,313
3,980
(1,664)
(1,673)

Weighted-
Average
Exercise
Price

$17.89
19.75
13.23
20.73

Weighted-
Average
Exercise
Price

$16.36
20.17
11.22
22.96

Shares

15,215
3,882
(3,260)
(1,495)

Shares

14,342
3,737
(2,206)
(1,560)

Outstanding at end of year . . . . . . . . . .

14,956

19.85

14,313

18.79

14,342

17.89

Exercisable at end of year . . . . . . . . . . .

9,076

19.11

8,301

18.20

8,041

Weighted-average grant-date fair value

of options granted during the year . . .

$ 7.79

$ 8.28

$ 8.98

Outstanding

Weighted-
Average

Excercisable

Number
Outstanding
(in thousands)

Remaining Weighted-
Contractual Average Aggregate
Intrinsic
Exercise
Value
Price

Life
(years)

Number
Exercisable
(in thousands)

Weighted-
Average Aggregate
Intrinsic
Exercise
Value
Price

Range of Exercise Prices

$4.25-$9.66 . . . . . . . . . . . . . . .
$9.67-$16.82 . . . . . . . . . . . . . .
$16.86-$17.30 . . . . . . . . . . . . . .
$17.43-$19.07 . . . . . . . . . . . . . .
$19.10-$21.01 . . . . . . . . . . . . . .
$21.02-$21.73 . . . . . . . . . . . . . .
$21.87-$22.10 . . . . . . . . . . . . . .
$22.31-$27.50 . . . . . . . . . . . . . .
$27.51-$52.44 . . . . . . . . . . . . . .
$56.84 . . . . . . . . . . . . . . . . . .

1,679
1,722
1,567
1,648
1,905
1,116
2,135
2,027
1,135
22

Totals . . . . . . . . . . . . . . . . .

14,956

3.39
6.41
5.66
5.90
4.81
4.75
6.59
4.85
4.32
2.80

5.26

$ 7.74
15.13
17.13
18.48
20.28
21.55
22.10
25.92
32.52
56.84

$19.85

$21,129

1,679
1,493
642
985
1,210
591
204
1,433
817
22

9,076

$ 7.74
14.97
17.14
18.52
20.58
21.54
22.08
26.51
33.61
56.84

$19.11

$20,457

Aggregate intrinsic value in the table above represents the total pre-tax intrinsic value, based on

the closing prices of our common stock  of $17.52  on December 31,  2007, which would  have been
received by the option holders had all option holders  exercised their options as of that date. Total
unrecognized compensation cost related to nonvested stock options outstanding  as of December 31,
2007 was $49.7 million, excluding forfeitures, which we expect to recognize over a  weighted-average
period of 2.9 years.

87

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

3. STOCK-BASED COMPENSATION  (Continued)

Additional information regarding our  options exercised is set forth below:

(In thousands)

Cash received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aggregate intrinsic value . . . . . . . . . . . . . . . . . . . . . . . . .

Years Ended December 31,

2007

$22,778
$15,856

2006

$29,182
$28,469

Prior to the fourth quarter of 2007, all outstanding  stock options contained  provisions whereby
25% of the original option grant amount would  have accelerated and become immediately vested under
certain circumstances in the event of a  change in control of  the Company. During the  fourth quarter of
2007, the Compensation Committee of  the Board of Directors approved a modification to the existing
terms of all outstanding stock options held  by non-officers of the Company to increase  the level  of
acceleration to 50% of the original grant  amount  with all other terms  and provisions of the  options
remaining unchanged. In addition, during  the fourth quarter of 2007, the Compensation Committee
approved a modification to the existing  terms  of  outstanding  stock options  held by our commercial
employees to accelerate the vesting equal to 25%  of the original  grant amount if and when  the sale  of
the Commercial and Cardiovascular  Assets occurred prior to a change in control of  the Company. As
both of these modifications would result in additional  vesting for the option holders only under  certain
circumstances, and as those events are  not deemed to be probable until such time  as each occurs, no
incremental expense related to the modifications  to  the options  has been recorded  to  date.

Restricted Stock

A summary of our restricted stock activity  for the year ended  December 31, 2007 is presented

below:

2007

2006

2005

Weighted-
average
grant-date
fair value
(in thousands) per share

Number of
shares

Weighted-
average
grant-date
fair value
(in thousands) per share

Number of
shares

Weighted-
average
grant-date
fair  value
(in  thousands) per share

Number of
shares

Nonvested  at beginning of year . . . .
Awards granted . . . . . . . . . . . . .
Awards vested . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . .
Nonvested at end of year . . . .

137
143
(41)
(31)
208

$20.67
$20.00
$20.86
$19.65
$20.33

103
60
(26)
—
137

$ 21.88
$ 19.09
$(21.88)
$ —
$ 20.67

—
106
—
(3)
103

$ —
$21.88
$ —
$21.73
$28.88

Stock-based compensation expense related to our restricted  stock  for  the years ended
December 31, 2007 and 2006 was $1.2 million  and  $0.7 million,  respectively. Total unrecognized
compensation cost related to nonvested restricted  stock outstanding as  of  December 31, 2007 was
$4.0 million, which we expect to recognize over  a weighted-average period of  1.8 years.

During  the fourth quarter of 2007, the Compensation Committee  of  the Board  of Directors
approved a modification to the existing  terms of certain restricted stock grants made during the third
quarter of 2007 to certain employees of the Company to provide for 100% acceleration of any unvested
portion of these grants in the event of a  change in control of the Company. All other terms and
provisions of the restricted stock grants remain unchanged. As this modification  would only result in
additional vesting for the grant holders in the  event of a change  in control of the  Company, and as that
event is not deemed to be probable until  such  time as  it  occurs, no incremental expense  related to the
modification of these grants has been  recorded to date.

88

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

4. COLLABORATIVE ARRANGEMENTS

Biogen Idec MA, Inc.

In September 2005, we entered into a  collaboration agreement with Biogen

Idec MA, Inc. (Biogen Idec) for the joint development, manufacture and commercialization of three
antibodies. The agreement provides for shared  development and commercialization of daclizumab in
multiple sclerosis and indications other than transplant and respiratory diseases,  and for shared
development and commercialization of volociximab (M200) and HuZAF (fontolizumab) in all
indications.

We  received an upfront license fee payment of  $40.0 million and, pursuant to a related stock

purchase agreement, Biogen Idec purchased 4.1  million shares of  our common stock at  $24.637 per
share, which represented the then fair  market  value of  the stock, for an  aggregate amount of
$100.0 million in cash.

We  and Biogen Idec share equally the costs of all  development activities and all operating profits

from each collaboration product within  the United States and Europe. The companies share the
development, manufacturing and commercialization  plans for collaboration products  and intend to
divide implementation responsibilities to leverage each  company’s capabilities and expertise. We are
eligible to receive development and commercialization milestones based  on the  further successful
development of the antibodies covered  by the collaboration agreement. Each party will have
co-promotion rights in the United States  and  Europe. Outside  the  United States and Europe, Biogen
Idec will fund all incremental development and commercialization costs  and pay  a royalty to us on sales
of collaboration products. If multiple products  are developed successfully in multiple indications and  all
milestones are achieved, PDL could receive  certain development  and  commercialization  milestone
payments totaling up to $660 million.  Of  these,  $560 million are  related  to development and
$100 million are related to commercialization of collaboration products.

We  determined that all elements under the  collaboration agreement should  be  accounted for  as a

single unit of accounting under Emerging  Issues Task Force (EITF)  Issue No.  00-21. As we have
continuing obligations under the collaboration agreement,  and as  significant  development risk  remains,
we recorded the $40.0 million upfront license fee  as deferred revenue, and we are recognizing  this
amount over development periods of the  antibodies, ranging  from five to nine years. During the years
ended December 31, 2007 and 2006, we  recognized  revenues  of $24.8 million and $27.2 million,
respectively, under the Biogen Idec arrangement.

In the fourth quarter of 2007 we recognized a  $5 million at-risk milestone  payment from  Biogen

Idec upon datalock of the current phase 2 trial of the daclizumab product in multiple sclerosis.

5. NET LOSS PER SHARE

In accordance with SFAS No. 128, ‘‘Earnings  Per Share,’’ basic  net loss per share is computed

using the weighted-average number of  shares of common stock outstanding during the  periods
presented, while diluted net loss per share  is computed using  the sum of the weighted-average number
of common and common equivalent shares outstanding. Common equivalent shares used  in the
computation of diluted earnings per  share  result from  the assumed exercise of stock options, the
issuance of restricted stock and the assumed purchase of common shares under  our  ESPP using the
treasury stock method, as well as the assumed release  of shares in escrow from  the ESP  Pharma
acquisition and the conversion of convertible notes using the  if-converted method.  For all periods
presented, we incurred a net loss and, as such, we did not include the effect  of  outstanding stock

89

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

5. NET LOSS PER SHARE (Continued)

options, outstanding shares in escrow,  outstanding  restricted stock, or outstanding convertible notes in
the diluted net loss per share calculations, as  their  effect would have been anti-dilutive.

The following table summarizes the number of common equivalent shares  excluded from the
calculation of diluted net loss per share reported in the statement of operations and excluded from the
table presented in the Stock-Based Compensation section in Note 3 above,  as their effect would have
been anti-dilutive:

(In thousands)

Years Ended December 31,

2007

2006

2005

Stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common stock in  escrow . . . . . . . . . . . . . . . . . . . . . . . .
Restricted stock outstanding . . . . . . . . . . . . . . . . . . . . . .
Convertible notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14,678
153
154
22,970

14,283
953
120
22,970

15,376
1,608
49
21,640

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37,955

38,326

38,673

6. ASSETS HELD FOR SALE AND  DISCONTINUED OPERATIONS

Assets  are classified ‘‘held for sale’’ when certain  criteria  are met,  including whether  management

commits to a formal plan to actively  market  the assets for sale. During the fourth quarter of 2007,
based on the interest and related offers we received for our Commercial and Cardiovascular Assets,  we
elected to proceed with the sale of the Commercial  and  Cardiovascular Assets separate from the  sale
of the entire Company. As a result, in accordance with  SFAS No. 144,  we classified our Commercial
and Cardiovascular Assets, including product rights intangible assets  and  fixed assets, as ‘‘held for sale’’
on the Consolidated Balance Sheet. Upon  designation  as held for sale,  the carrying  value of the  assets
are recorded at the lower of their carrying value or their estimated fair value, less costs  to  sell, and we
cease to recognize depreciation or amortization expenses related to the assets. As of December 31,
2007, our assets held for sale were comprised of our  Commercial and  Cardiovascular Assets.

In addition, since we expect to have  no significant or direct involvement  in the future operations

related to the Commercial and Cardiovascular Assets after the closing date  of the sales in March  2008,
the results of the Commercial and Cardiovascular Operations have  been presented as discontinued
operations in the Consolidated Statement  of Operations. While  we  expect to have some indirect
involvement in the future operations of  the Cardiovascular Assets,  it will  not  be  significant, since  it
relates to assistance with Cardene lifecycle management activities that  will not extend  beyond  the
2008 year end, for which we will be reimbursed by  EKR, and we estimate such amount will be less than
10% of the total purchase price of the  Cardiovascular Assets. In addition, other indirect involvement
that we may have  is the receipt of contingent consideration and royalties  on  certain future product
sales, which would not preclude the classification  of discontinued operations under SFAS No. 144.

The amortization expenses related to the  Commercial  and  Cardiovascular Assets that were
incurred prior to the date on which we  designated them as ‘‘held for sale,’’ which was December  1,
2007, are classified within discontinued operations. Our  Commercial  and Cardiovascular Operations
include financial results related to our  Commercial and Cardiovascular Assets as well as all revenues
and costs and expenses related to previously owned  commercial products  (Declomycin,  Sectral, Ismo
and Tenex) and development costs related to terlipressin,  a development program that we  terminated in

90

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

6. ASSETS HELD FOR SALE AND  DISCONTINUED OPERATIONS (Continued)

2006, all of which we acquired in connection with the acquisition of ESP Pharma, Inc. in  March 2005,
the purchase of rights to the Retavase product in March 2005 and the purchase of  certain Cardene
rights from Roche in September 2006.

Since our Commercial and Cardiovascular  Assets were classified as  ‘‘held for  sale’’ as  of

December 31, 2007, we were required to report these  assets  at  the lower of their respective  carrying
amounts or their fair values less costs  to  sell.  The carrying value of  the  Commercial and Cardiovascular
Assets  was approximately $269.4 million as of December 31, 2007.  In addition, the  $81.7 million
goodwill balance on our Consolidated  Balance Sheet relates entirely to our Commercial  and
Cardiovascular Operations reporting  unit.  Our estimates of the fair value of the  Commercial and
Cardiovascular Assets were based upon executed agreements for  the  sale of  the related assets. For the
IV Busulfex assets, our estimate of fair value was  based on the purchase price of $200 million, and  for
the Cardiovascular Assets, our estimate of fair value  was based  on the up-front fee of $85  million,  a
probability-weighted and discounted estimate of  the fair value of the  contingent milestones  and a
probability-weighted and discounted estimate of  the fair value of the  future royalties. Based upon our
analysis, as of December 31, 2007, the  estimated  fair value of  the  Commercial and  Cardiovascular
Assets  exceeded the carrying value of the  assets,  including the  related goodwill. Therefore, we didn’t
recognize any asset impairment charges  for our Commercial  and Cardiovascular Assets.

Although we did not recognize any asset  impairment charges  related  to  the assets within our
Commercial and Cardiovascular Operations  reporting unit as  of December 31, 2007, we expect  to
recognize a loss of approximately $65 million in  connection with  the completion of the sales of the
Commercial and Cardiovascular Assets. This loss  is driven from the contingent  consideration that we
may receive in the future in connection with the  sale of the Cardiovascular Assets. We have included
such contingent consideration in our  fair value  estimate as of December 31, 2007, as discussed above,
but we will not record the contingent  consideration until such  time  that milestones and/or  royalties are
earned.

The significant components of our Commercial and Cardiovascular  Operations, which  were
presented as discontinued operations for  the  years  ended December 31, 2007, 2006  and 2005, were  as
follows:

(In thousands)

Years Ended December 31,

2007

2006

2005

Net revenues . . . . . . . . . . . . . . . . . . . . . . . . . .
Total costs and expenses . . . . . . . . . . . . . . . . . .

$ 204,166
(205,615)

$ 165,701
(285,129)

$ 122,106
(238,569)

Pretax losses . . . . . . . . . . . . . . . . . . . . . . . . .
Income tax expense (benefit) . . . . . . . . . . . . .

(1,449)
221

(119,428)
(174)

(116,463)
821

Loss from discontinued operations . . . . . . .

$

(1,670) $(119,254) $(117,284)

We  have not allocated any interest to our discontinued operations.

91

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

6. ASSETS HELD FOR SALE AND  DISCONTINUED OPERATIONS (Continued)

The net carrying values of the assets held for  sale  as of December 31, 2007 were as follows:

(In thousands)

December 31,
2007

Product rights, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$244,316
1,192
23,882

Total assets held for sale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$269,390

Commercial Restructuring and Retention Plan

In August 2007, based on retention and severance plans  approved by the Compensation
Committee of our Board of Directors, we committed to provide certain  severance benefits  to  those
employees who would be impacted in  connection  with the  sale of the Commercial and Cardiovascular
Assets  (the Commercial Employees). All communications to the approximately 250  Commercial
Employees of these benefits took place  prior to the end  of August 2007, including the amount of
severance to which the employees would be entitled upon termination in the  event they  are not offered
a comparable position by us or the acquiring entity, which is  generally 12 weeks of salary and medical
benefits and up to three months of outplacement services. Under SFAS  No. 146, ‘‘Accounting for Costs
Associated with Exit or Disposal Activities’’ (SFAS  No.  146),  a  restructuring liability should only be
recorded  after it satisfies all the criteria of  the definition of a liability under Concepts Statement No. 6.
The Commercial Employees would only  be  eligible  to  receive these benefits  if  (i) a sale of the
Commercial and Cardiovascular Assets is closed,  (ii) they are terminated as  a result of  such a sale, and
(iii) they do not receive a comparable  offer from the  acquiring  entity, and as of December  31, 2007,
none of the events obligating PDL to  pay  the  severance amounts had yet  occurred. As a  result, we did
not recognize any expenses related to  this severance plan during 2007.  We will record  a liability and
related charges for these severance benefits during the period in which we  can determine the number
of employees who will not receive a comparable offer from an acquiring entity. We expect this  to  occur
during the first quarter of 2008.

In addition to the severance program  discussed above,  we also provided retention  bonuses for

certain Commercial Employees during this transition period, which  are payable  on the  earlier of
June 30, 2008 or the date on which the  Commercial Employee’s  employment with  us  is terminated in
connection with the sale of the Commercial and Cardiovascular  Assets. We are  accruing the liability
over the period from the date the program was  approved through  the estimated service period  for the
Commercial Employees. The total amount we expect  to  incur for Commercial Employee retention
bonuses is $3.0 million, of which we have recognized $2.0  million in  2007, which  is included in
discontinued operations in our Consolidated Statement of Operations  for  the year ended December 31,
2007.

7. BUSINESS COMBINATIONS AND  PRODUCT  ACQUISITIONS

All financial results related to our business combinations and  product acquisitions  that  occurred

during the periods presented are included within  our  Commercial  and Cardiovascular  Operations, and
accordingly, presented as discontinued  operations in  our  Consolidated  Statement of Operations.  In
addition, all inventories and long-lived  assets  that we held related to these transactions, excluding

92

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

7. BUSINESS COMBINATIONS AND  PRODUCT  ACQUISITIONS  (Continued)

goodwill, were classified as assets held  for sale on our Consolidated Balance  Sheet as of December 31,
2007. See Note 6 for further details on  assets  held  for sale  and discontinued operations.

ESP Pharma Acquisition

In March 2005, we completed the acquisition of all  of  the outstanding stock of ESP Pharma. The

ESP Pharma acquisition was accounted  for as a  business  combination in  accordance with SFAS
No. 141, ‘‘Business Combinations’’ (SFAS  No. 141). In  addition to the issuance  of 7,330,182 shares of
PDL common stock and a cash payment of $325.0 million to ESP Pharma stockholders, we incurred
direct transaction costs of $5.4 million, and we deposited  2,523,588 shares of common stock into an
escrow account. The value associated with these shares was accounted  for  in subsequent periods as
contingent consideration. In due course under the  Escrow  Agreement and also in connection with a
final settlement with the former stockholders of ESP Pharma, we released  2,167,900 shares  through
April 2007 and retained the remainder of  the escrowed shares. This resulted in an increase to goodwill
and stockholders’ equity by $35.3 million, $12.7 million and $12.6 million during the years ended
December 31, 2005, 2006 and 2007, respectively. In addition, we reduced  goodwill by $8.8 million,
$0.5 million and $0.8 million during the years ended December 31, 2005,  2006 and 2007, respectively,
primarily in connection with the lapsing  of  certain contingent tax liabilities and with deferred  tax assets
associated with the carry back of tax losses related  to  ESP Pharma.

The net book value of acquired assets  and liabilities, which approximated fair value  as of

March 23, 2005, was as follows:

(In thousands)

Assets:
Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fixed assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 2,442
4,612
1,904
808

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9,766

Liabilities:
Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued royalties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued sales rebates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total liabilities

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1,836
1,803
5,432
4,817
10,518

24,406

Net book value of acquired assets and liabilities . . . . . . . . . . . . . . . .

$(14,640)

93

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

7. BUSINESS COMBINATIONS AND  PRODUCT  ACQUISITIONS  (Continued)

We  allocated the purchase price as follows:

Net liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquired in-process research and development . . . . . . . . . . . . . . . . . .

(In thousands)

$ (14,640)
31,262
339,200
79,417

Total purchase price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$435,239

The $339.2 million value assigned to  the  intangible assets related  to  product rights for  the six
products—Cardene IV, IV Busulfex, Declomycin, Sectral, Tenex and Ismo products—rights to which we
acquired.

As part of the allocation of the purchase price  for ESP Pharma, we  allocated $79.4 million to
acquired in-process research and development related to ESP Pharma’s clinical  stage research and
development programs that had not  yet reached technological feasibility and  had no alternative future
use as of the acquisition date. A summary of these programs follows:

Program

Terlipressin

Ularitide

Description

A synthetic 12 amino  acid peptide derived  from  the naturally
occurring lysine-vasopressin for type 1 hepatorenal  syndrome (HRS) . .

A synthetic form of the  natriuretic peptide for the treatment of acute
decompensated heart failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Value
(In thousands)

$23,765

55,652

$79,417

Prior to December 2006, we were party to a collaboration agreement  with Orphan

Therapeutics, LLC (Orphan), the holder  of the  Investigational New Drug application for  terlipressin,
pursuant to which we held exclusive  marketing, sales and distribution rights to terlipressin. In August
2006, we announced that the phase 3 trial  of terlipressin in  patients with type  1 HRS did  not  meet its
primary endpoint. Following a meeting  among representatives of FDA, Orphan  and us regarding the
outcome of the phase 3 trial of terlipressin,  we and Orphan mutually agreed to terminate the
agreement under which we held exclusive  marketing,  sales  and distribution rights to terlipressin
effective December 16, 2006 and the rights  we previously held under this collaboration agreement
reverted back to Orphan at that time.

We  sold the rights to ularitide in March 2008 in connection with the  sale of  our Cardiovascular

Assets  to EKR.

Divestiture of Off-Branded Products

We  entered into an agreement regarding the sale of rights to  the Declomycin product with Glades
Pharmaceuticals, LLC (Glades) in December 2005. The transfer of rights to the Declomycin product to
Glades for total cash proceeds of $8.3 million was completed  in February 2006. In  addition,  we sold the
rights to the Sectral, Tenex and Ismo products to Dr. Reddy’s Laboratories  Limited  for total cash
proceeds of $2.7 million in March 2006. During the first quarter  of  2006, we  paid $4.1 million to Wyeth

94

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

7. BUSINESS COMBINATIONS AND  PRODUCT  ACQUISITIONS  (Continued)

and obtained the consent from Wyeth  necessary to transfer  all rights to the Declomycin product to
Glades and all rights to our other three off-patent products  to  Dr. Reddy’s Laboratories. The total
expense recognized related to these two transactions  aggregated to $4.1  million  and was  recognized
during the first quarter of 2006.

Retavase Acquisition

In March 2005, we completed the acquisition of rights  to  manufacture, develop, market and
distribute Retavase product in the United States and Canada. The aggregate purchase price was
$110.5 million, including the cash paid to Centocor of $110.0  million  and  $0.5  million  of  transaction
costs. As we did not acquire any employees, and therefore the acquisition lacked the necessary inputs,
processes and outputs to constitute a business,  we  accounted for  the Retavase product acquisition as an
acquisition of assets rather than as a  business combination in  accordance with EITF  Issue No.  98-3,
‘‘Determining Whether a Nonmonetary  Transaction Involves  Receipt of Productive Assets or of  a
Business.’’ Retavase product sales are included in discontinued  operations from  the date of the
re-launch of the product in April 2005.

The following table summarizes the purchase price allocation  of Retavase product assets on

March 23, 2005:

Tangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaction costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 16,500
93,500
500

Total purchase price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$110,500

(In thousands)

Under the March 2005 agreement with Centocor  for the purchase of the rights to the Retavase
product,  in addition to the $110.0 million  paid upon the execution of the agreement, we  agreed to pay
up to $45.0 million in milestone payments  to Centocor upon the occurrence of certain future events.
During  September 2006, Centocor met the  first  milestone under the terms  of  the agreement, which
triggered a $15.0 million payment due to them. Accordingly, in  September 2006, we recorded additional
intangible assets of $15.0 million as  Retavase product rights. We later recognized impairment charges
for the Retavase intangible assets (see Note 8 for further  details).

In March 2008, we sold our rights to  the Retavase product to EKR in connection with  the sale of
our  Cardiovascular Assets. Based on the terms of the asset purchase  agreement, all future  obligations
relating to the remaining Centocor milestone payments transferred  to  EKR  upon the  close of the sale.

Acquisition of Certain Cardene Rights from  Roche

In September 2006, we acquired from Roche all Cardene product-related rights owned by them,

including rights to the  Cardene trademark, rights to the Cardene Immediate Release product (Cardene
IR) and the Cardene Sustained Release product (Cardene SR), and inventories for both Cardene SR
and Cardene IR products. In connection with this transaction,  we obtained rights to all formulations  of
the Cardene product. In consideration for these rights, we agreed to pay  Roche  $13.9 million,
$3.7 million of which was due upon signing of the  agreement, $6.7 million of which was due during the
first half of 2007 upon the delivery of additional Cardene SR product inventory from Roche, and

95

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

7. BUSINESS COMBINATIONS AND  PRODUCT  ACQUISITIONS  (Continued)

$3.5 million of which is due upon FDA approval of the technology transfer of the manufacturing
process for nicardipine, the active pharmaceutical ingredient in  the manufacture of all Cardene
products, which we expect to occur in 2008. Under  the terms  of  the arrangement, we are now  obligated
to pay royalties to Roche only on sales  of  intravenous Cardene products that fall under the existing
relevant Cardene product-related U.S. patents through patent expiration, which is currently  November
2009, but do not owe additional royalties  on sales of the  oral products.

In connection with the transaction, during  the third quarter of 2006, we recorded $10.7 million  of
the purchase price, which was allocated to each element of the arrangement  based on each element’s
relative fair value, as follows:

Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research and development expense . . . . . . . . . . . . . . . . . . . . . . . . . .

Total purchase price allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(In thousands)

$ 1,273
3,776
5,621

$10,670

We  determined the fair value of the  acquired assets  consistent with  SFAS No. 142. The fair value
of the inventories and intangible assets acquired  included both Cardene IR and Cardene SR products.
Since we did not have plans to sell the Cardene IR product, we wrote off the fair value  attributable to
Cardene IR product inventories and immediately recorded $0.2  million  as asset impairment charges
during the third quarter of 2006. The amortization period  for the intangible assets relating to the
Cardene SR product is three years, which approximates the remaining patent life. In 2006,  we
recognized $5.6 million of the purchase price  as research  and  development expenses, representing the
net present value of the estimated royalty  amounts we potentially saved  related to preliminary  research
pertaining to potential products that  are outside the scope of the  existing Cardene product-related U.S.
patents. These research efforts were  incomplete and  had  not  yet reached  technological feasibility as of
the date of the transaction with Roche.

In addition to the $10.7 million purchase price recorded  in the third quarter of 2006,  we recorded
the fair value of additional Cardene SR product inventory, totaling $3.2 million  during the first half of
2007, when Roche delivered such inventory to us.

In March 2008, we sold our rights to  the Cardene product to EKR in connection with the  sale of
our  Cardiovascular Assets. Based on the terms of  the asset purchase  agreement, all future  obligations
relating to the Roche agreement, including the  $3.5 million milestone  payment, transferred to EKR
upon the close.

8. ASSET IMPAIRMENT CHARGES

Asset Impairment Charges Included in Continuing  Operations

On June 30, 2007, management committed to a  plan to sell two buildings that comprised  part of
our  prior corporate headquarters in Fremont, California.  Based on market value  information we had at
the time, we concluded that the net carrying value of the  assets  was impaired  as of June 30, 2007,  and
we recognized an impairment charge of $5.0  million to reduce the  net carrying value of the assets to
$20.6 million, which was our estimate of fair value, less cost to sell. The sale  of these  two buildings

96

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

8. ASSET IMPAIRMENT CHARGES  (Continued)

closed in October 2007 on terms consistent  with those expected and, as a result, no significant  gain or
loss on the sale was recognized at the time of sale.

In June 2006, we concluded that the  carrying amount of the licensed research technology  acquired

from Morphotek Inc. in 2004 was impaired because  we abandoned the related technology associated
with our research projects. Accordingly, we recorded an impairment charge of $0.9 million,  representing
the unamortized balance prior to the  impairment assessment, during  the second quarter of 2006.

In October 2005, pursuant to the terms  of  the Second Amended and Restated Worldwide
Agreement with Roche, we agreed not to exercise the  reversion right we had held under the 2003
Worldwide Agreement with Roche to  promote and sell the Zenapax antibody for prevention of acute
kidney transplant rejection, and we are no longer required  to make a payment for such right  that  would
otherwise have been due in 2006 under  this agreement. As a  result, during the fourth quarter of 2005,
we wrote off the carrying value of the  reversion right of $15.8  million  acquired  in October  2003 under
the 2003 Worldwide Agreement with  Roche.

Asset Impairment Charges Classified as  Discontinued Operations

In 2006, we recognized impairment charges of $73.8  million related to the Retavase assets. During
December 2006, we determined that  indicators of impairment  existed related to our Retavase product
rights intangible assets. As such, we tested these intangible assets  for  recoverability under SFAS
No. 144 and the total of the estimated  future cash flows directly related to our  sale of Retavase product
was less than the carrying value of the  asset as  of December 31, 2006. Therefore, we determined that
the carrying value of our Retavase product rights was impaired, and we used a present value technique
to calculate the fair value of the asset using a discount rate of  15%.  As a  result, we  recognized an
impairment charge totaling $72.1 million,  which represented  the difference  between the carrying value
of the asset and the present value of  estimated discounted future cash  flows  as of December 31, 2006.
The remaining $1.7 million charge in 2006 related to the impairment of an intangible  asset associated
with the distribution of  Retavase product in certain territories.

In September 2005, we recognized an asset impairment charge of $15.5 million to write down the

carrying amounts of the product rights and related inventory  of our  four off-patent products to their
fair values based on a revaluation completed in September 2005. We acquired these product rights as
part of the acquisition of ESP Pharma, however, as  we  were  committed to the development,
manufacture and commercialization of proprietary biopharmaceutical products, marketing the off-patent
products was inconsistent with our strategy. Accordingly, during the third quarter of 2005,  we made a
decision to market the assets relating to these  products to potential acquirers, and  we engaged a
financial advisor to assist us in that effort. At September  30,  2005, the fair  value of these product rights
and  related inventory was estimated  by management based  on the indications of interest that we had
received from potential buyers. We classified these product rights  and the related  inventory  as held for
sale and ceased the amortization of these  product rights in  accordance with SFAS No. 144. In addition,
we wrote down $1.1 million of this off-patent  product inventory  on hand as of  December 31,  2005
based on  its expected net realizable amount.

97

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

9. RESTRUCTURING AND OTHER  CHARGES

Manufacturing Restructuring

In August 2007, in connection with a  months-long  evaluation of strategic alternatives that our

management and Board of Directors  conducted,  we announced a strategic change to focus  the
Company on the discovery and development of novel antibodies  in oncology and  select immunologic
diseases.  As a result of this new strategic  focus, we communicated our intent to sell certain of our
assets that were not aligned with this new strategic  direction. In addition we announced our plans to
conduct a thorough review of our organization, where  we anticipated a sizeable workforce reduction, to
ensure that our structure and scope of  operations are appropriately aligned with  our new strategy.

In late September  2007, the Board of Directors formally approved a workforce reduction related  to

our  manufacturing operations. During the  third quarter of 2007, we informed employees that any
employees terminated in a reduction  would be eligible  for a  package consisting of severance payments
of generally 12 weeks of salary and medical  benefits  and up to three months of outplacement services.
In early October 2007, we notified the 104 individuals affected by this workforce reduction, and all
impacted employees were provided 60 days  advance notice of the date their employment would
terminate. In 2007, we recognized restructuring charges of  $3.6 million, consisting of $2.4 million in
post-termination severance costs, $0.3 million of 401(k) matching payments and $0.9  million of  salary
and bonus accruals relating to the portion  of the 60-day notice period over which the terminated
employees would not be providing services to the  Company.

Facilities Related Restructuring

During  the third quarter of 2007, we initiated our move  from our prior corporate  headquarters  in
Fremont, California to our new location  in Redwood City,  California.  In connection with this  move, we
ceased use of a portion of the leased  property  in  Fremont, California and, as a result,  we recognized a
restructuring charge of approximately $1.3 million.  We expect  to  pay all obligations accrued  relating to
these leases by the end of the first quarter of 2008, when the  leases on  these facilities terminate.

In addition, during the second and fourth quarters of 2007, we ceased use  of two of  our leased

facilities in Plymouth, Minnesota. In connection with the sale of our Manufacturing Assets, which  we
expect to close in the first quarter of 2008, Genmab would assume our obligations for one of these two
facilities. Accordingly, for that facility, we have  accrued lease exit costs for the period from January 1,
2008 to March 31,  2008, after which time Genmab would  assume  the obligations under the lease.
During  2007, we recognized restructuring costs of  approximately $1.8  million related to these leased
facilities. We expect to pay all obligations accrued  relating to these leases by the end of the first
quarter of 2009.

The following table summarizes the restructuring activity discussed above, as well as  the remaining

reserve  balance at December 31, 2007:

(In thousands)

Personnel
Costs

Facilities
Related

Total

Balance at December 31, 2006 . . . . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . . . . .
Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ — $ — $ —
6,668
(4,400)
55

3,616
(3,205)
—

3,052
(1,195)
55

Balance at December 31, 2007 . . . . . . . . . . . . . . . . . .

$

411

$ 1,912

$ 2,323

98

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

9. RESTRUCTURING AND OTHER  CHARGES (Continued)

Other Charges

During  the fourth quarter of 2007, we put in place general retention programs for key employees

as well as an executive retention program. We are accruing the liability for these programs  over the
period from the date the program was approved  through the estimated service period. The total
general and executive retention bonuses are $2.8 million  and  $1.2 million, of which  we have recognized
$0.7 million and $0.4 million, respectively, in 2007. Such amounts have  been classified as research and
development expenses and general and administrative expenses in the financial statements.

In addition, during the fourth quarter of 2007, we  put severance arrangements in place for  several

of our executives, including Mr. Mark  McDade,  our former  Chief Executive Officer. The expense
related to these severance arrangements equaled $2.6  million, which was recognized in the fourth
quarter of 2007 in general and administrative expenses. We expect to pay all amounts due under these
arrangements by the end of 2008.

10. MARKETABLE SECURITIES AND RESTRICTED  CASH

We  invest our excess cash balances primarily in short-term and long-term marketable debt

securities. These securities are classified  as available-for-sale. Available-for-sale securities are carried at
estimated fair value, with unrealized  gains and losses reported in accumulated other comprehensive  loss
in stockholders’ equity. The amortized  cost of debt securities is adjusted for amortization of premiums
and discounts to maturity. Such amortization is included in interest income. The cost of securities sold
is based on the specific identification  method. To date,  we have not experienced  credit losses on
investments in these instruments. In addition,  we do not require collateral related to our investment
activities.

During  2006, we recorded $18.3 million  as non-current  restricted cash related to the lease of our

headquarters in Redwood City, California. Of this amount, $15.0 million supported a  letter of credit
from which our landlord could draw if we  did not fulfill  our obligations with respect to the construction
of our leasehold improvements. This  letter of credit  is to expire in November  2008. The remaining
$3.3 million supports letters of credit serving as a security deposit for the Redwood City facilities.

99

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

10. MARKETABLE SECURITIES AND RESTRICTED  CASH (Continued)

Estimated fair value is based upon quoted  market  prices for these  or similar instruments.

(In thousands)

Marketable Debt Securities

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Estimated
Fair
Value

December 31, 2007
Institutional money market funds
Securities of U.S. Government sponsored  entities

. . . . . . . . . . . . . . . . . .

$208,217

maturing within 1  year . . . . . . . . . . . . . . . . . . . . . . . . .
U.S. corporate debt securities maturing  within  one year . .

152,027
9,920

Total marketable debt securities . . . . . . . . . . . . . . . . . . . .

$370,164

$—

74
—

$74

$ — $208,217

(4)
(3)

(7)

$

152,097
9,917

$370,231

December 31, 2006
Institutional money market funds
Securities of U.S. Government sponsored  entities

. . . . . . . . . . . . . . . . . .

maturing:
within 1 year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
between 1-3 years . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U.S. corporate debt securities maturing  within  one year . .

$ 75,850

$ 75,850

144,671
74,997
89,228

—
39
—

(363)
(144)
—

144,308
74,892
89,228

Total marketable debt securities . . . . . . . . . . . . . . . . . . . .

$384,746

$39

$(507)

$384,278

The following table presents the classification of the available-for-sale securities on  our

Consolidated Balance Sheets.

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short-term marketable securities . . . . . . . . . . . . . . . . . . . . . .
Long-term marketable securities . . . . . . . . . . . . . . . . . . . . . .

$298,351
71,880
—

$155,271
154,115
74,892

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$370,231

$384,278

December 31,

2007

2006

The following table summarizes the unrealized loss positions of our marketable  debt securities for

which  other-than-temporary impairments  have  not  been recognized at  December 31, 2007 and 2006:

(In thousands)

Fair Value

Unrealized
Loss

Less than 12 months . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Greater than  12 months . . . . . . . . . . . . . . . . . . . . . . . . . .

$19,840
—

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$19,840

$(7)
—

$(7)

Fair Value

$49,853
39,638

$89,491

Unrealized
Loss

$(144)
(363)

$(507)

Marketable Debt Securities

December 31.2007

December 31.2006

100

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

10. MARKETABLE SECURITIES AND RESTRICTED  CASH (Continued)

During  2007 and 2006, we did not recognize any  gains or losses on sales of available-for-sale
securities. During 2005, we recognized  $0.3 million in losses on sales of available-for-sale securities. We
do not believe that any of our marketable securities have suffered  any other-than-temporary declines in
value as of December 31, 2007, as the  unrealized losses primarily relate to the fluctuation of  interest
rates, and we have the ability and intent  to hold such securities to maturity.

11. LAND, PROPERTY AND EQUIPMENT

Land, property, and equipment consisted of the following:

(In thousands)

December 31,

2007

2006

Land . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Buildings and improvements . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
Laboratory and manufacturing equipment
Construction-in-process . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer and office equipment . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

7,778
179,261
86,408
77,496
6,322
48,168
5,359

$ 14,717
178,624
22,856
79,552
42,642
39,144
4,611

Gross land, property and equipment . . . . . . . . . . . . . . . . . .
Less accumulated depreciation and amortization . . . . . . . . . . .
Less property and equipment in assets held for sale . . . . . . . .

410,792
(78,854)
(1,192)

382,146
(85,617)
—

Net land, property and equipment

. . . . . . . . . . . . . . . . . . .

$330,746

$296,529

We  began moving our corporate headquarters  to  Redwood City, California in  September 2007  and

completed the move by the end of 2007. In October  2007, we closed on the sale of property  that  we
had owned in Fremont, California, which was part of our former  corporate headquarters. In connection
with the sale of this property in Fremont,  which closed  in the fourth quarter of 2007,  we received gross
proceeds of $20.9 million and, after repaying the underlying mortgage and other closing costs,  our net
proceeds from the sale were $13.2 million.

In connection with the sale of our Commercial and Cardiovascular  Assets, as of December 31,

2007, we have reclassified $1.2 million  of  laboratory  and  manufacturing  equipment related  to  our
Commercial and Cardiovascular Operations  as assets held for  sale.

101

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

12. INTANGIBLE ASSETS

Intangible assets consisted of the following:

(In thousands)

Product rights . . . . . . . . . . . . . . . . . .
Core technology . . . . . . . . . . . . . . . .
Assembled workforce . . . . . . . . . . . . .

December 31, 2007

December 31,  2006

Gross
Carrying
Amount

$328,876
16,053
1,410

Accumulated
Amortization

$(84,560)
(6,997)
(1,410)

Net
Carrying
Amount

$244,316
9,056
—

Gross
Carrying
Amount

$328,876
16,053
1,410

Accumulated
Amortization

$(53,865)
(5,351)
(1,410)

Net
Carrying
Amount

$275,011
10,702
—

Net intangible assets . . . . . . . . . . . .

$346,339

$(92,967)

$253,372

$346,339

$(60,626)

$285,713

On December 1, 2007, the product rights intangible assets  were  classified as assets  held for  sale on

our  Consolidated Balance Sheet. As  of this date, we  ceased amortization of these assets  and classified
them as ‘‘held for sale’’ at the lower of their respective  carrying values or fair  values  less  costs to sell.
Amortization expense for our product rights’ intangible assets was included in  discontinued operations
during the years ended December 31, 2007, 2006 and 2005  and was $30.7  million,  $43.1 million and
$35.4 million, respectively. See Note 6 for  further details.

Amortization expense for our core technology and assembled workforce intangible  assets was
included in research and development and general  and administrative expenses during the years ended
December 31, 2007, 2006 and 2005, and was  $1.6 million, $1.8 million and $2.1 million, respectively.
For our core technology intangible asset, the expected future  annual  amortization  expense is  as follows:

(In thousands)
For the year ending December 31,

2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total amortization expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Core
Technology

$1,647
1,647
1,647
1,647
1,647
821

$9,056

102

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

13. ACCRUED LIABILITIES

Other accrued liabilities consisted of  the following:

(In thousands)

December 31,

2007

2006

Consulting and services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued clinical and pre-clinical trial costs . . . . . . . . . . . . . . . . .
Accrued interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction-in-process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Milestone payment related to delivery of Cardene SR inventory .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$12,432
6,314
4,453
2,288
—
8,351

$12,105
14,302
4,453
3,294
3,500
8,271

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$33,838

$45,925

14. POSTRETIREMENT BENEFIT PLAN

In June 2003, we established a postretirement  health  care  plan (the Plan), which covers medical,

dental and vision coverage for certain  of  our  former officers  and  their  dependents. Coverage for
eligible retirees is noncontributory, but retirees are required  to  contribute 25% of  dependent premium
cost. In addition, coverage under the  Plan ceases  when participants become eligible for Medicare
benefits.

In December 2006, we adopted SFAS  No. 158 which required  us to recognize the funded status of
the Plan in our Consolidated Balance  Sheets, which was a liability of $1.7 million  and $1.7 million  as of
December 31, 2007 and December 31, 2006, respectively. The following table illustrates the incremental
effect of applying SFAS No. 158 on individual line items  in our  Consolidated Balance  Sheets as of
December 31, 2006:

(In thousands)

Other long-term liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated other comprehensive loss . . . . . . . . . . . . . . . . . . . .
Total stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Before
Application
of SFAS 158

$ 36,671
$673,494
$
(468)
$468,399

Adjustments

$ 858
$ 858
$(858)
$(858)

After
Application
of SFAS  158

$ 37,529
$674,352
$ (1,326)
$467,541

The following table sets forth the change in  benefit obligation for the Plan:

(In thousands)

December 31,

2007

2006

Accumulated postretirement benefit obligation at beginning of year . $1,706 $1,794
148
97
(263)
11
(81)

Service cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuarial gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plan participants’ contributions . . . . . . . . . . . . . . . . . . . . . . . . . .
Benefits paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

164
96
(233)
12
(87)

Accumulated postretirement benefit obligation at end of year . . $1,658 $1,706

103

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

14. POSTRETIREMENT BENEFIT PLAN (Continued)

We  calculated the accumulated postretirement benefit obligation using an assumed discount  rate of

5.8% for the years ended December  31,  2007 and 2006. In 2007 and 2006, we assumed the rate of
increase in per capita costs of covered health care benefits would increase  to  8%, decreasing gradually
to 5.5% for both assumptions by the  end of year  2010.

As of December 31, 2007, the amounts recognized in our  Consolidated Balance Sheets  are as

follows:

(In thousands)

December 31,

2007

2006

Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other long-term liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

72
1,586

$

81
1,625

Net liability recognized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1,658

$1,706

Net periodic benefit cost for the Plan consists  of the following:

(In thousands)

Service cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest cost
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of prior service cost . . . . . . . . . . . . . . . . . . . . . .
Amortization of net (gain) loss . . . . . . . . . . . . . . . . . . . . . . . .

Net periodic benefit cost . . . . . . . . . . . . . . . . . . . . . . . . . . .

December 31,

2007

2006

2005

$164
96
74
11

$345

$148
97
74
36

$355

$109
72
74
8

$263

Assumed health care trend rates could have a significant effect on  the amounts reported for

healthcare plans. A one-percentage-point change  in assumed  health  care cost trend rate would have  the
following effects:

(In thousands)

One
percentage
point increase

One
percentage
point decrease

Effect on accumulated postretirement benefit obligation

as of December 31, 2007 . . . . . . . . . . . . . . . . . . . . . .
Effect on total of service and interest cost in 2007 . . . . .

$148
$ 31

$(132)
$ (27)

In connection with the Plan, we expect to pay  health  care  net premiums  aggregating $0.3 million

during the years 2008 through 2011 and  $0.5 million during the  years  2012 through 2017.

104

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

14. POSTRETIREMENT BENEFIT PLAN (Continued)

The following table sets forth the amounts of net actuarial loss and prior service cost which have

been recognized in other comprehensive income  but which have  not  yet been recognized as
components of net periodic benefit cost:

(In thousands)

December 31,

2007

2006

Net actuarial loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prior service cost

$ 64
476

$308
550

Amount recognized in accumulated other comprehensive income . . .

$540

$858

Of  these  amounts,  we  expect  to  recognize  approximately  $74,000  of  prior  service  cost  as  the

components of net periodic benefit cost in 2008.

15. COMMITMENTS AND CONTINGENCIES

Commitments

Operating Leases

We  occupy leased facilities under agreements that  have expiration dates between  2008 and 2021.

We  also have leased certain office equipment  under operating leases. Rental expense  under these
arrangements totaled $10.7 million, $6.1 million,  and  $4.2 million  for  the years ended December 31,
2007, 2006 and 2005, respectively. Future  payments under non-cancelable  operating leases  as of
December 31, 2007, are as follows:

For the year ending December 31,

(In thousands)

2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 4,719
3,933
3,607
3,466
3,464
63,309

$82,498

Lease Financing Obligation

In July 2006, we entered into agreements to lease two buildings in Redwood City, California, to
serve as our corporate headquarters.  Our  underlying lease term is 15 years,  and we have options to
extend the terms of our leases for up to ten years to December 2031. We took possession  of these
buildings during the fourth quarter of 2006, constructed leasehold improvements for both buildings,  and
completed our move into the buildings by  the end of 2007. The larger  of  the two  buildings, the
Administration Building, will primarily  serve  as general office  space, while the other will serve  as our
principal laboratory space (the Lab Building). Future payments related to the  Administration Building
are included in the disclosure of operating  leases above.

Significant leasehold improvements were performed for the Lab Building, which had never  been

occupied or improved for occupancy.  Due to our involvement in and assumed risk during the

105

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

15. COMMITMENTS AND CONTINGENCIES (Continued)

construction period, as well as the nature  of the  leasehold improvements  for the Lab Building, we were
required under Emerging Issues Task  Force No.  97-10, ‘‘The Effect of Lessee Involvement in Asset
Construction,’’ to reflect the lease of  the Lab Building  in  our financial statements as if we had
purchased the building. Therefore, we recorded  the fair value of the building  and a  corresponding
long-term financing liability. At December 31, 2007 and  2006,  our financing liability related to the Lab
Building was approximately $26.9 million  and $25.4  million, respectively.

Future payments for the Lab Building as  of December  31,  2007, are as follows:

For the year ending December 31,

(In thousands)

2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less amount representing interest
. . . . . . . . . . . . . . . . . . . . . . . . .
Less amount representing ground rental expense . . . . . . . . . . . . . . .
Less amount representing future reimbursement of leasehold

$ 3,376
3,494
3,616
3,743
3,874
37,457

55,560
(15,204)
(13,483)

improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(2,118)

Present value of future payments . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 24,755

Minimum Purchase Commitments

We  have minimum purchase commitments  related to our contract manufacturing arrangements for

both our commercial and clinical products. As  of December  31, 2007, such purchase commitments
totaled $50.8 million for 2008 and $6.2 million for 2009  and  2010. Of the total commitments as of
December 31, 2007, $1.2 million related to our on-going  Antibody-Based Operations and  $55.8 million
was attributable to our Commercial and  Cardiovascular Operations. We  closed the sales of our
Commercial and Cardiovascular Assets during  March 2008 and, based  on the  terms of the sales
transactions, $53.3 million of the $55.8  million in obligations related to the  Commercial and
Cardiovascular Assets transferred to EKR  and Otsuka  at this time.

Contingencies

As permitted under Delaware law, pursuant to the terms  of  our bylaws, we have agreed  to

indemnify our officers and directors and, pursuant to the  terms of indemnification agreements  we have
entered into, we have agreed to indemnify our executive officers  and directors for certain events or
occurrences, subject to certain limits, while the officer  or director is or was serving  as an officer or
director of the Company. While the maximum amount of potential future indemnification is  unlimited,
we have a director and officer insurance policy that limits our exposure  and  may enable us to recover a
portion of any future amounts paid.  We believe the  fair value of these indemnification agreements and
bylaw provisions is minimal, and accordingly, we  have not recorded the  fair value liability associated
with these agreements as of December 31, 2007.

106

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

15. COMMITMENTS AND CONTINGENCIES (Continued)

In addition, in connection with the closing of  the sale of the Cardiovascular Assets to EKR and
under certain circumstances, we may  be  required to reimburse EKR for the cost  of certain Retavase
manufacturing obligations during 2008, not to exceed $2.5 million.

16. LONG-TERM LIABILITIES AND NOTE PAYABLE

Our long-term liabilities as of December 31, 2007 and 2006 included  $26.2 million and

$24.7 million, respectively, for the financing obligation related to our Lab Building in  Redwood City,
California, as discussed in Note 15 to  the Consolidated Financial Statements, $1.6 million related to the
non-current portion of our accumulated  postretirement benefit obligation recognized  as of
December 31, 2007 and 2006, as discussed in Note  14, $3.6 million and $0.9  million, respectively,
related to the timing difference between  straight-line  recognition of rent  expenses and actual rent
payments and for both periods presented,  $3.5 million for a milestone  payment payable to Roche
related to the successful technology transfer of the manufacture of Cardene active pharmaceutical
ingredient. Upon the closing of the sale of the  Cardiovascular Assets  in March 2008, EKR assumed  the
$3.5 million milestone obligation to Roche.

Additionally, as of December 31, 2006, our long-tem  liabilities  included  $6.2 million related to a

$10.2 million term loan which we obtained in September 1999 to purchase our former Fremont,
California facilities. The loan bore interest at the rate of 7.64%  per  year amortized over 15 years with
principal and interest payable monthly. During the fourth quarter of 2007,  in connection with the sale
of these  facilities, we paid off the loan  in  entirety. In  connection with the early extinguishment of this
debt, we recognized loan defeasance costs of $0.9  million, which is  included in  interest and other
income, net, in the Consolidated Statement of Operations.

17. CONVERTIBLE NOTES

In February 2005, we issued 2.00% Convertible Senior  Notes due  February 14, 2012  with a
principal amount of $250.0 million (2005  Notes). The 2005 Notes  are  convertible into our common
stock at a conversion price of $23.69 per share,  subject to adjustment in certain  events. Interest on the
2005 Notes is payable semiannually in  arrears on  February 15 and August  15 of each year. The 2005
Notes are unsecured and subordinated  to  all  our  existing and future indebtedness and may be
redeemed at our option, in whole or  in part, beginning on February 19, 2010 at  par value.

Issuance costs associated with the 2005 Notes aggregating $8.0 million are  included in  other assets

and are being amortized to interest expense over the  term of the  debt,  or  approximately  seven  years.
The accumulated amortization at December 31,  2007 was $3.3 million. The  estimated  fair value of the
2005 Notes at December 31, 2007 was  $242.4 million based upon publicly  available pricing information.

In July 2003, we issued 2.75% Convertible Subordinated  Notes  due August 16, 2023 with a
principal amount of $250.0 million (2003  Notes). The 2003 Notes  are  convertible into our common
stock at a conversion price of $20.14 per share,  subject to adjustment in certain  events and  at the
holders’ option. Interest on the 2003 Notes is  payable semiannually in  arrears on February  16 and
August 16 of each year. The 2003 Notes are unsecured and  are  subordinated to all our existing  and
future senior indebtedness. The 2003 Notes may be redeemed  at our option, in whole or in  part,
beginning on August 16, 2008 at par  value.  In addition, in  August 2010, August 2013 and August 2018,
holders  of our 2003 Notes may require us  to  repurchase all or a portion of their notes  at 100%  of their
principal amount, plus any accrued and  unpaid interest to, but excluding,  such date. For any  2003

107

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

17. CONVERTIBLE NOTES (Continued)

Notes to be repurchased in August 2010, we must  pay  for the repurchase in cash, and we may pay for
the repurchase of any 2003 Notes to  be  repurchased in August 2013 and August  2018, at  our option, in
cash, shares of our common stock or  a combination of cash and shares of our common stock. In the
third quarter of 2003, we filed a shelf registration  statement  with the Securities and Exchange
Commission covering the resale of the  2003  Notes and  the common stock issuable  upon conversion of
the 2003 Notes.

Issuance costs associated with the 2003 Notes aggregating $8.4 million are included in  other assets

and are being amortized to interest expense over the  term  of the earliest  redemption of the debt, or
approximately seven years. The accumulated  amortization at December 31,  2007 was $5.4 million. The
estimated fair value of the 2003 Notes  at  December  31, 2007 was $258.3 million based upon publicly
available pricing information.

18. REVENUES BY GEOGRAPHIC  AREA AND SIGNIFICANT CUSTOMERS

Accounts receivable from our customers who individually accounted for 10% or more of our total

gross  accounts receivable is as follows:

McKesson Corp.
AmerisourceBergen Corp.
Cardinal Health, Inc.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32%
28%
27%

25%
23%
34%

The foregoing customers relate to our  discontinued operations.  The following table summarizes

revenues from licensees who individually accounted for 10%  or  more of our total revenues from
continuing operations for the years ended  December 31, 2007, 2006 and  2005 (as a  percentage of total
revenues from continuing operations):

December 31,

2007

2006

Years Ended
December 31,

2007

2006

2005

Licensees

Genentech, Inc. (Genentech) . . . . . . . . . . . . . . . . . . . . . . . . . .
MedImmune, Inc. (MedImmune) . . . . . . . . . . . . . . . . . . . . . . .

68% 60% 55%
14% 13% 21%

Royalty revenues and license and other revenues by geographic area are based on the country of

domicile of the counterparty to the agreement. The following table summarizes revenues from
continuing operations by geographic  area for  the years ended December 31, 2007,  2006 and 2005:

(In thousands)

Years Ended December 31,

2007

2006

2005

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$217,750
40,523
652

$188,409
60,003
657

$127,350
30,392
721

Total revenues . . . . . . . . . . . . . . . . . . . . . . . . . .

$258,925

$249,069

$158,463

108

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

19. INCOME TAXES

Income tax expenses in 2007, 2006 and  2005 were primarily related to federal alternative minimum
taxes, state taxes and foreign taxes on income  earned by  our foreign operations, which were reduced by
interest accrued related to the lapsing of certain contingent liabilities, which we assumed upon the
acquisition of ESP Pharma. Of our total  tax provision for  income taxes of $0.5 million, $0.8 million and
$0.9 million for the years ended December 31,  2007, 2006,  and 2005, we recognized income tax
expenses related to our discontinued  operations of $0.2 million and $0.8 million in 2007 and 2005,
respectively, and an income tax benefit  of $0.2  million  in 2006. The provision  for income taxes from
continuing operations is as follows:

(In thousands)

December 31,

2007

2006

2005

Federal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$124
—
123

$838

$—
22 —
47
81

Total provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$247

$941

$47

A reconciliation of the income tax provision computed using the U.S. statutory  federal income tax

rate compared to the income tax provision included in the accompanying  Consolidated Statements of
Operations is as follows:

(In thousands)

December 31,

2007

2006

2005

Tax  at U.S. statutory rate on loss  before income  taxes

and discontinued operations . . . . . . . . . . . . . . . . . .
Unutilized net operating losses . . . . . . . . . . . . . . . . .
Federal alternative minimum tax . . . . . . . . . . . . . . . .
State taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(6,700) $(3,439) $(17,236)
17,236
3,462
—
838
—
22
47
58

6,730
124
—
93

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

247

$

941

$

47

As of December 31, 2007, we had federal  and  state net operating  loss carryforwards of

$493.8 million and $262.5 million, respectively, and  we had  federal  and  California state research and
other tax credit carryforwards of $28.6 million and $25.9  million, respectively.  The  federal net  operating
loss and tax credit carryforwards will expire  at various  dates  beginning in the  year 2008 through 2027, if
not utilized. The state net operating losses will expire at various dates beginning in 2008  through 2022,
if not utilized. The majority of the state tax credits do  not  expire.

Utilization of the federal and state net operating loss and tax credit carryforwards  may be subject
to a substantial annual limitation due  to  the ‘‘change in ownership’’ provisions of the Internal Revenue
Code of 1986. The annual limitation may  result in the  expiration of net operating losses and credits
before utilization.

Deferred income tax assets and liabilities  are determined  based on the differences between

financial reporting and income tax bases of assets  and  liabilities, as well as net  operating loss
carryforwards and are measured using the enacted  tax  rates and laws in effect when the differences  are

109

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

19. INCOME TAXES (Continued)

expected to reverse. The significant components  of our net  deferred tax assets  and liabilities are as
follows:

(In thousands)

Deferred tax assets:

December 31,

2007

2006

Net operating loss carryforwards . . . . . . . . . . . . . . . . . . .
Research and other tax credits . . . . . . . . . . . . . . . . . . . . .
Stock-based compensation . . . . . . . . . . . . . . . . . . . . . . . .
Reserves and accruals . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capitalized research and development costs . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 68,036
31,914
14,169
12,934
3,211
12,217
2,241

$ 58,994
30,408
8,591
14,409
4,121
17,590
7,223

Total deferred tax assets . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

144,722
(120,156)

141,336
(110,424)

Total deferred tax assets . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax liabilities:

24,566

30,912

Intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(24,566)

(30,912)

Total deferred tax liabilities . . . . . . . . . . . . . . . . . . . . . . . .

(24,566)

(30,912)

Net deferred tax assets . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

— $

—

Due to our lack of earnings history, the net deferred tax assets have  been fully offset by a

valuation allowance. The valuation allowance increased by $9.7 million and decreased by $33.8  million
for the years ended December 31, 2007 and 2006,  respectively. As a result of adopting SFAS
No. 123(R), the deferred tax asset balances  at December 31,  2007 and December 31,  2006 did not
include excess tax benefits from stock  option exercises. The amount excluded at December  31, 2007 was
$114.2 million. Equity will be increased by $114.2  million  if and when such excess  tax benefits are
ultimately realized.

In July 2006, the FASB issued Interpretation No. 48, ‘‘Accounting for Uncertainty in Income
Taxes’’ (FIN 48), which was effective for  fiscal years beginning after December 15, 2006. On  January 1,
2007, we adopted the provisions of FIN 48, which prescribes a recognition threshold  and measurement
attribute for the financial statement recognition and  measurement of  a  tax position taken or expected
to be taken in income tax returns. As  a  result  of  the adoption of FIN 48,  we recorded  a $0.1 million
increase related to our liability for unrecognized tax benefits, which was accounted for as  an increase to
our  accumulated deficit. Unrecognized tax benefits represent tax  positions for  which reserves have been

110

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

19. INCOME TAXES (Continued)

established. A reconciliation of our unrecognized tax benefits, excluding accrued interest, for  2007 is as
follows:

(In thousands)

Balance at January 1, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increases related to current year tax  positions . . . . . . . . . . . . . . . . . .
Increases related to prior year tax positions . . . . . . . . . . . . . . . . . . .
Decreases related to prior year tax positions . . . . . . . . . . . . . . . . . . .
Expiration of statute of limitations for the assessment of taxes . . . . . .

December 31,
2007

$ 9,974
856
1,604
(170)
(688)

Balance at December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$11,576

The future impact of the unrecognized tax benefit  of $11.6 million, if recognized, is as follows:
$0.1 million would affect the effective tax  rate;  $0.8 million would result  in a reduction in goodwill
associated with the acquisition of ESP  Pharma; and $10.7 million would  result in adjustments  to
deferred tax assets and corresponding adjustment  to  the valuation allowance.

Estimated interest and penalties related to the underpayment  of  income  taxes are  classified as a

component of tax expense in the Consolidated Statement of Operations  and totaled $0.1  million  in
2007. Accrued interest and penalties were $0.5 million and $0.6  million as  of  December 31, 2007 and
December 31, 2006, respectively.

In general, our income tax returns are subject to examination by U.S. federal,  state and various

local tax authorities for tax years 1993 forward. We  do  not anticipate any additional  unrecognized
benefits in the next 12 months that would  result in  a material change to our financial position.

20. LEGAL PROCEEDINGS

Two humanization patents based on the  Queen  technology were issued to us by the European
Patent Office, European Patent No. 0 451 216 (the ‘216 Patent) and  European Patent No.  0 682 040
(the ‘040 Patent). Eighteen notices of  opposition to our ‘216 Patent and eight notices of opposition to
our  ‘040  Patent were filed by major pharmaceutical and biotechnology companies, among others,  and
we are currently in two separate opposition proceedings with respect to these  two patents.  Six
opponents, including Genentech, have  withdrawn  from the opposition proceedings  with respect to the
opposition to our ‘216 Patent leaving  12 remaining opponents. A description  of these  two proceedings
is set forth below.

Opposition to ‘216 Patent

In November 2003, in an appeal proceeding of a  prior action of the Opposition Division of the
European Patent Office, the Technical  Board  of Appeal of the European Patent Office  ordered  that
certain claims in our ‘216 Patent be remitted  to  the Opposition Division for  further prosecution and
consideration of issues of patentability (entitlement to priority, novelty,  enablement and inventive  step).
The claims remitted cover the production of humanized antibody  light chains that contain amino acid
substitutions made under our antibody humanization technology.  In April 2007, at an oral proceeding
the Opposition Division upheld claims  that are  virtually  identical  to  the  claims remitted  by  the
Technical Board of Appeal to the Opposition  Division. The opponents in  this opposition have the  right

111

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

20. LEGAL PROCEEDINGS  (Continued)

to appeal this decision of the Opposition Divisions. If  any  of the opponents appeal the decision to the
Technical Board of Appeal, the ‘216  Patent would continue to be enforceable  during the appeal
process. Two notices of appeal have since been by  filed, by Boehringer  Ingelheim GmbH and Celltech
R&D Limited.

Until the opposition is resolved, we may  be  limited  in  our ability to collect royalties  or to negotiate

future licensing or collaborative research  and development arrangements based on this and our other
humanization patents. Moreover, if the  opposition  is  eventually successful, our ability to collect
royalties on European sales of antibodies  humanized by  others would depend on  the scope and validity
of our ‘040 Patent, which is also being opposed, whether the antibodies are  manufactured in a country
outside of Europe  where they are covered  by one of  our patents, and in  that  case the terms  of our
license agreements with respect to that  situation. Also,  if the  Opposition Division rules against us, that
decision could encourage challenges of  our  related patents in  other  jurisdictions, including the United
States. Such a decision may also lead  some of our  licensees to stop making royalty payments or lead
potential licensees not to take a license,  either  of  which might result in us initiating formal legal actions
to enforce our rights under our humanization  patents. In  such a situation, a likely defensive strategy to
our  action would be to challenge our patents in that  jurisdiction. During the  opposition process with
respect to our ‘216 Patent, if we were to commence an infringement action to enforce that patent, such
an action would likely be stayed until the  opposition is decided by the European Patent Office. As a
result, we may not be able to successfully  enforce our rights under our European or related  U.S.
patents.

Opposition to ‘040 Patent

At an oral hearing in February 2005, the  Opposition Division decided to revoke the  claims in our

‘040 Patent. The Opposition Division based  its decision on formal  issues and did not consider
substantive issues of patentability. We  appealed the decision to the Technical Board  of Appeal. The
appeal suspended the legal effect of the  decision  of  the Opposition Division during the appeal process.
The Technical Board of Appeal has not scheduled a date  for the  appeal hearing with respect to the
‘040 Patent.

We  intend to continue to vigorously  defend  our two  European Queen patents in these  two

proceedings. We may not prevail in either of  the opposition proceedings or any litigation  contesting the
validity of these patents. If the outcome of either  of  the opposition proceedings or any litigation
involving our antibody humanization patents were to be unfavorable, our ability to collect royalties on
existing licensed products and to license  our patents  relating to humanized antibodies may  be  materially
harmed. In addition, these proceedings or  any  other litigation to protect our intellectual property rights
or defend against infringement claims  by others could result in substantial costs and diversion of
management’s time and attention, which  could  harm our business and financial condition.

Patent Infringement Suit against Alexion

In March 2007, after the FDA’s market approval of Alexion Pharmaceuticals, Inc.’s (Alexion)
Soliris(cid:3)  (eculizumab) humanized antibody product, we filed a lawsuit  against  Alexion  in the United
States District Court for the District of  Delaware for infringement of certain  claims of United States
Patent Number 5,693,761, United States Patent Number 5,693,762  and United States Patent
Number 6,180,370 (collectively, the patents-in-suit), which are  three of our antibody humanization
patents, commonly referred to as the Queen patents. We  are seeking monetary damages and other

112

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

December 31, 2007

20. LEGAL PROCEEDINGS  (Continued)

relief. In June 2007, Alexion filed an  answer denying that its  Soliris product infringes the
patents-in-suit, asserting certain defenses  and counterclaiming for non-infringement and invalidity, and
thereafter amended its answer to include  a defense  of  unenforceability. In July 2007, the discovery
stage of this litigation began and discovery is  ongoing. We intend to vigorously assert our rights under
the patents-in-suit and defend against Alexion’s  counterclaims.

21. SUBSEQUENT EVENTS

In December 2007, we entered into an asset  purchase agreement with Otsuka  under which we
agreed to sell the rights to IV Busulfex, including trademarks, patents, intellectual property and related
assets, for $200 million in cash, plus  additional consideration  for  the sale  of  our  IV Busulfex
inventories, all to be paid at closing. The  sale of  IV Busulfex to Otsuka closed on March 7, 2008.

In February 2008, we entered into an asset  purchase agreement  with EKR for our  Cardiovascular

Assets. The consideration for our Cardiovascular Assets, which includes all trademarks, patents,
intellectual property, inventories and  related  assets, consisted of an  upfront payment  of $85 million, up
to $85 million in development and sales  milestone payments, as well as royalties on  certain  future
product  sales. The sale of the Cardiovascular Assets closed on  March 7,  2008.

In February 2008, we entered into an asset  purchase agreement  for  the sale  of  our  Manufacturing

Assets  to Genmab for total cash proceeds  of $240 million. In addition, Genmab  plans to retain the
approximately 170 employees currently  working  at the  manufacturing facility. In connection with this
transaction, Genmab would produce  clinical  material to supply certain of  our pipeline products for  our
investigational studies under a clinical  supply agreement. As  the  carrying amount of the  Manufacturing
Assets  was classified as held for sale  at the end  of  January 2008, and such amount approximated
$190 million as of January 31, 2008, we  expect to recognize a gain of approximately $50 million upon
the close of the transaction, which we expect to occur  during the first quarter of  2008.

In an effort to reduce operating costs to a  level more consistent  with a biotechnology company

focused solely on antibody discovery and  development, in  March  2008 we  commenced  a restructuring
effort pursuant to which we will eliminate  approximately  250 employment positions over approximately
one year and undertake other substantial cost  cutting  measures.  This reduction  is in  addition to
previously  planned  reductions  of  approximately  335  positions  resulting  from  the  sales  of  the
Commercial and Cardiovascular Assets and Manufacturing Assets.  Subsequent to the transition period,
we expect that our workforce will consist  of approximately 300 employees. We anticipate a transition
period of approximately 12 months before  planned  expense reductions and transition services related to
the Commercial and Cardiovascular  Assets and Manufacturing Assets sales transactions are fully
implemented or completed. We have offered  retention  bonuses and  other incentives to the transition
employees, as well as to the employees that  we expect to retain after the restructuring, to encourage
these employees to stay with the Company. In connection with  this  restructuring  effort, we expect to
incur significant transition-related expenses  over the next  12-month period, a portion of which would be
recorded  as restructuring charges.

113

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders of  PDL BioPharma, Inc.

We  have audited the accompanying consolidated balance sheets of PDL  BioPharma,  Inc. as of

December 31, 2007 and 2006, and the related consolidated statements of operations, cash flows,  and
stockholders’ equity for each of the three  years in the  period  ended  December 31, 2007. Our audits
also included the financial statement schedule listed  in the Index at Item 15(a).  These financial
statements and schedule are the responsibility of the  Company’s management.  Our responsibility  is to
express an opinion on these financial statements and schedule  based on our audits.

We  conducted our audits in accordance with the standards  of  the Public Company Accounting
Oversight Board (United States). Those  standards require that we  plan and perform the audit to obtain
reasonable assurance about whether  the  financial  statements are free  of material misstatement.  An
audit includes examining, on a test basis, evidence  supporting the amounts and disclosures  in the
financial statements. An audit also includes assessing the accounting  principles used  and significant
estimates made by management, as well as  evaluating the overall financial statement presentation. We
believe that our audits provide a reasonable  basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects,
the consolidated financial position of  PDL BioPharma,  Inc. at December 31, 2007 and 2006, and the
consolidated results of its operations and  its cash  flows  for  each  of the three years in the period ended
December 31, 2007, in conformity with  U.S.  generally accepted accounting  principles.  Also, in  our
opinion, the related financial statement  schedule, when  considered in  relation  to  the basic  financial
statements taken as a whole, presents fairly in all  material respects the information set forth  therein.

As discussed in Notes 3 and 12 to the consolidated financial  statements,  in 2006 PDL
BioPharma, Inc. changed its methods  of accounting  for  stock-based compensation  and for its
postretirement benefit plan. In addition,  as disclosed in Note 19, in  2007 PDL BioPharma, Inc.  adopted
FASB Interpretation No. 48, ‘‘Accounting  for  Uncertainty  in Income  Taxes.’’

We  also have audited, in accordance  with the standards of  the Public Company Accounting

Oversight Board (United States), the  effectiveness of PDL BioPharma, Inc.’s internal control over
financial reporting as of December 31, 2007, based on criteria established  in Internal Control-
Integrated Framework issued by the Committee of Sponsoring Organizations of  the Treadway
Commission and our report dated March  6, 2008 expressed an adverse  opinion  thereon.

/s/ ERNST & YOUNG LLP

Palo Alto, California
March  6,  2008
except for Note 21, as of which the date is
March 7, 2008

114

QUARTERLY FINANCIAL DATA (UNAUDITED)

(In thousands, except per share data)

December 31

September 30

June 30

March  31

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net income (loss) per diluted share . . . . . . . . . . . . . . .

$ 49,757
$(15,581)
(0.13)
$

$61,256
$ (5,784)
$ (0.05)

$89,057
$10,910
0.09
$

$ 58,856
$(10,606)
(0.09)
$

2007 Quarter Ended(1)

(In thousands, except per share data)

December 31

September 30

June 30

March  31

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss per diluted share . . . . . . . . . . . . . . . . . . . . . .

$ 59,791
$(89,708)
(0.78)
$

$70,328
$ (6,723)
$ (0.06)

$65,285
$ 53,665
$ (7,359) $(26,230)
(0.23)
$ (0.06) $

2006 Quarter Ended(1)

(1) The 2007 and 2006 amounts were computed independently for each  quarter,  and the  sum of the
quarters may not equal the annual amounts due to rounding. In  prior reports,  revenues were
presented for three components: product sales, royalties, and license,  collaboration and  other.
Revenues from product sales are now reported as  part  of  discontinued operations (see Note 6) so
the total above only includes revenues from royalties  and  license, collaboration, and other.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON  ACCOUNTING AND

FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures. Under the supervision and with the participation

of our management, including our Interim Chief Executive Officer and Chief Financial Officer, we
evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as
defined in Rules 13a-15(e) and 15d-15(e)  of the  Securities Exchange Act  of 1934 (the Exchange Act))
as of  the end of the period covered by  this  report. Based on  this evaluation, our Interim  Chief
Executive Officer and Chief Financial  Officer have  concluded that, as of December  31, 2007, that due
to the material weakness discussed below, our disclosure controls and procedures were not effective to
ensure the information required to be disclosed by  us in reports that we file or submit under the
Securities Exchange Act of 1934 is recorded,  processed, summarized and reported within the time
periods specified in the SEC’s rules and  forms.

Management’s Report on Internal Control Over Financial Reporting. Management of PDL

BioPharma Inc. is responsible for establishing and maintaining adequate internal  control over financial
reporting. The company’s internal control  over financial reporting is a process designed under the
supervision of the company’s principal executive and principal financial officers to provide reasonable
assurance regarding the reliability of  financial  reporting and the preparation  of  the company’s financial
statements for external reporting purposes  in accordance with U.S. generally accepted accounting
principles. As of December 31, 2007,  management  conducted an  assessment of the effectiveness of the
Company’s internal control over financial reporting based on the framework established  in Internal
Control—Integrated Framework issued  by the Committee of  Sponsoring Organizations of the Treadway
Commission (COSO).

A material weakness is a deficiency,  or combination of deficiencies, in internal control over

financial reporting such that there is a reasonable possibility that a  material  misstatement of the  annual
or interim financial statements will not be prevented or detected on  a timely basis.  As a  result of the

115

material weakness described below, management  believes that, as of  December 31, 2007, our  internal
control over financial reporting was not effective based  on the criteria  in Internal Control—Integrated
Framework.

Based on this assessment, our management identified  a material weakness in the  company’s
internal control over financial reporting as  of December 31,  2007. The material weakness pertains to
ineffective controls in the financial statement close  process. Specifically, we did not have  a sufficient
number of accounting personnel with relevant technical accounting and financial reporting expertise to
effectively design and operate controls  over various non-routine  and  estimation  classes of transactions
including the classification of clinical affairs expenses,  the accounting for clinical trial expenses  related
to change orders, the accounting for asset  retirement obligations related to leased facilities, the
accounting for retention bonuses, the estimated forfeiture rate  for the  purposes of recording employee
stock-based compensation, and the impairment analysis  related  to  intangible  assets. As a result  of  this
material weakness, errors were identified by our auditors  in the 2007  consolidated  financial statements
related to the classification of expenses between research and development expenses and  general and
administrative expenses, an understatement  of  clinical development expenses,  the understatement of
lease expenses, the understatement of  retention bonus  expenses, and stock-based compensation
expense. These errors were corrected  in the consolidated financial statements as  of and  for the  year
ended December 31, 2007.

The independent registered public accounting  firm,  Ernst & Young LLP has  issued an adverse
opinion on the effectiveness of internal  control over financial reporting, as stated  in their report in
Item 9A of this Annual Report.

Changes in internal controls. We are taking steps to remediate the deficiencies that gave rise to

the material weakness identified in the financial statement close process. We have implemented
additional controls related to our clinical  trial accruals  process to ensure all costs  associated with  CRO
services incurred on our behalf are properly  identified and recorded  each period. In  addition,  we have
implemented a more detailed review of our expense classification during our financial  statement  close
process, and have also performed a retrospective review of  our lease agreements. We are  also working
diligently to enhance the operation of  our accounting review  of  new contractual agreements.

There were no other changes in our internal controls  over financial reporting during  the quarter
ended December 31, 2007 that have  materially affected, or are  reasonably likely  to  materially affect,
our  internal control over financial reporting.

Limitations on the effectiveness of controls. A control system, no matter how well conceived and
operated, can provide only reasonable, not absolute, assurance that the objectives of  the control system
are met. Because of inherent limitations  in all  control systems,  no evaluation of controls can provide
absolute assurance that all control issues, if any,  within  an organization have been detected. We
continue to improve and refine our internal  controls and our compliance with existing controls is an
ongoing process.

116

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders of  PDL BioPharma, Inc.

We  have audited PDL BioPharma, Inc.’s internal control over financial reporting as of

December 31, 2007 based on criteria established in Internal Control—Integrated Framework issued by
the Committee of Sponsoring Organizations  of the Treadway Commission  (the  COSO criteria). PDL
BioPharma, Inc.’s management is responsible for maintaining effective internal control over  financial
reporting, and for its assessment of the  effectiveness  of  internal control  over financial reporting
included in the accompanying Management’s  Report on Internal Control  Over  Financial Reporting.
Our responsibility is to express an opinion  on the  company’s internal control over financial reporting
based on our audit.

We  conducted our audit in accordance with the standards of  the Public Company Accounting
Oversight Board (United States). Those  standards require that we  plan and perform the audit to obtain
reasonable assurance about whether  effective  internal control over financial reporting was maintained
in all material respects. Our audit included  obtaining an understanding  of internal control  over
financial reporting, assessing the risk that a  material weakness exists, testing and evaluating the design
and operating effectiveness of internal control based  on the assessed risk, and performing such other
procedures as we considered necessary in  the circumstances. We  believe that our audit provides a
reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide  reasonable

assurance regarding the reliability of  financial  reporting and the preparation  of  financial  statements  for
external  purposes in accordance with  generally accepted accounting  principles. A company’s internal
control over financial reporting includes those policies and procedures that (1)  pertain to the
maintenance of records that, in reasonable  detail, accurately and fairly reflect the  transactions and
dispositions of the assets of the company; (2) provide reasonable assurance that transactions  are
recorded  as necessary to permit preparation of financial statements in  accordance with generally
accepted accounting principles, and that receipts and expenditures of the company are being made  only
in accordance with authorizations of management and directors of the company; and  (3) provide
reasonable assurance regarding prevention  or timely detection of unauthorized acquisition, use, or
disposition of the company’s assets that  could have a material effect on the financial statements.

Because of its inherent limitations, internal control over  financial  reporting may not prevent or

detect misstatements. Also, projections  of any evaluation  of  effectiveness to future periods are  subject
to the risk that controls may become inadequate  because of changes in conditions, or  that  the degree
of compliance with the policies or procedures may deteriorate.

A material weakness is a deficiency,  or combination of deficiencies, in internal control over
financial reporting, such that there is  a reasonable possibility that a  material  misstatement of the
company’s annual or interim financial  statements will  not  be  prevented or detected on a timely basis.
The following material weakness has  been  identified and  included in management’s assessment.
Management has identified a material  weakness  in controls related to the company’s financial
statement close process. This material weakness was considered  in determining the  nature, timing, and
extent of audit tests applied in our audit of the 2007  financial  statements, and  this report  does not
affect  our  report  dated  March  6,  2007  (except  for  Note  21,  as  to  which  the  date  is  March  7,  2008)  on
those financial statements.

In our opinion, because of the effect  of the  material weakness described above on  the achievement

of the objectives of the control criteria, PDL BioPharma, Inc.  has not maintained effective internal
control over financial reporting as of  December 31, 2007,  based on the COSO criteria.

Palo Alto, California
March 6, 2008

/s/ ERNST & YOUNG LLP

117

ITEM 9B. OTHER INFORMATION

Not applicable.

PART III

ITEM  10. DIRECTORS,  EXECUTIVE  OFFICERS  AND  CORPORATE  GOVERNANCE

The information required by this Item  10 is incorporated  by  reference from the information
provided under the headings ‘‘Members of  the Board of  Directors,’’ ‘‘Executive  Officers,’’  ‘‘Audit
Committee,’’ ‘‘Nominating Committee,’’  ‘‘Code  of Ethics,’’ and ‘‘Compliance  with Section  16(a)’’ of the
Proxy Statement.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this Item 11 is incorporated  by  reference from the information

provided under the heading ‘‘Compensation  Discussion and Analysis,’’  ‘‘Executive Officer
Compensation,’’ ‘‘Compensation of Directors,’’ ‘‘Compensation Committee—Compensation  Committee
Interlocks and Insider Participation’’ and ‘‘Report  of  the Compensation Committee’’ of the Proxy
Statement.

ITEM 12. SECURITY OWNERSHIP  OF CERTAIN  BENEFICIAL  OWNERS AND MANAGEMENT

AND RELATED STOCKHOLDER MATTERS

The information required by this Item  12 is incorporated  by  reference from the information
provided under the heading ‘‘Security Ownership  of Certain Beneficial Owners and Management’’ of
the Proxy Statement and from the information provided under  the subheading ‘‘Equity Compensation
Plan Information’’ under the heading ‘‘Equity Compensation Plan Information’’  in Part  II, Item 5  of
this Annual Report.

ITEM 13. CERTAIN RELATIONSHIPS  AND RELATED  TRANSACTIONS AND DIRECTOR

INDEPENDENCE

The information required by this Item 13 is incorporated  by  reference from the information
provided under the heading ‘‘Related Person  Transactions,’’ ‘‘Audit Committee—Review  and Approval
of Transactions with Related Persons’’ and ‘‘Independence of Directors’’ of the  Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this Item  14 is incorporated  by  reference from the information
provided under the heading ‘‘Appointment  of  Independent Registered Public Accounting Firm’’ of the
Proxy Statement.

118

PART IV

ITEM 15. EXHIBITS AND FINANCIAL  STATEMENT SCHEDULES

(a) The following documents are filed as part of this report:

(1) Index to financial statements

Our financial statements and the Report of  the Independent Registered Public  Accounting  Firm

are included in Part II, Item 8.

Item

Consolidated Balance Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Operations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Cash Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Stockholders’  Equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

70

71

72

73

74

Report of Independent Registered Public Accounting  Firm . . . . . . . . . . . . . . . . . . . . . . . . . . . .

114

(2) The following schedule is filed as  part  of  this  Annual Report and should be read in

conjunction with the financial statements:

Schedule II—Valuation and Qualifying Accounts and Reserves for the  year ended
December 31, 2007

All other financial statement schedules are omitted because the information is inapplicable or
presented in our Financial Statements or notes.

(3) Index to Exhibits

Exhibit
Number

Exhibit Title

2.1

Amended and Restated Agreement  and  Plan of Merger among the Company,  Big Dog

Bio, Inc. and ESP Pharma Holding Company, Inc., dated March 22, 2005 (incorporated by
reference to Exhibit 2.1 to Registration  Statement on  Form  S-3 filed  March 25, 2005)

2.2

Asset Purchase Agreement between Centocor, Inc.,  and ESP Pharma, Inc.,  dated  January 31,

2005 (incorporated by reference to Exhibit 2.2 to Current Report on Form 8-K  filed
March 25, 2005)†

2.3

Asset Purchase Agreement between the Company  and Otsuka Pharmaceutical Co., Ltd., dated

December 14, 2007 (incorporated by reference to Exhibit 10.1 to Current Report on
Form 8-K filed December 17, 2007)

3.1

Restated Certificate of Incorporation effective  March 23,  1993 (incorporated by reference to

Exhibit 3.1 to Annual Report on Form  10-K filed  March 31, 1993)

3.2

Certificate of Amendment of Certificate of Incorporation effective August 21, 2001

(incorporated by reference to Exhibit 3.3 to Annual  Report on Form 10-K filed March 14,
2002)

3.3

Certificate of Amendment of Certificate of Incorporation effective January 9, 2006

(incorporated by reference to Exhibit 99.1 to Current  Report on Form  8-K  filed January  10,
2006)

119

Exhibit
Number

3.4

Certificate of Designation, Preferences  and Rights of the  Terms effective August 25, 2006
(incorporated by reference to Exhibit 3.4 to Registration Statement on Form  8-A filed
September 6, 2006)

Exhibit Title

3.5

Amended and Restated Bylaws  effective December 28, 2007  (incorporated by reference to

Exhibit 3.1 to Current Report on Form 8-K filed January  3, 2008)

4.1

Indenture between the Company  and J.P.  Morgan Trust  Company, National  Association, dated

July 14, 2003 (incorporated by reference  to  Exhibit 4.1 to Registration Statement on
Form S-3 filed September 11, 2003)

4.2

4.3

Indenture between the Company  and J.P.  Morgan Trust  Company, National  Association, dated
February 14, 2005 (incorporated by reference to Exhibit 4.1  to  Current Report  on Form 8-K
filed February 16, 2005)

Registration Rights Agreement among the  Company and  Goldman, Sachs  & Co., Citigroup
Global  Markets Inc. and UBS Securities LLC, dated February 14, 2005 (incorporated by
reference to Exhibit 4.2 to Current Report on Form 8-K filed  February 16, 2005)

4.4

Rights Agreement, dated August 25,  2006, between the Company  and  Mellon  Investor

Services LLC (incorporated by reference to Exhibit  4.1 to Current  Report on  Form 8-K
filed August 29, 2006)

*10.2

1991 Stock Option Plan, as  amended October  20, 1992 and June 15,  1995, together with forms

of Incentive Stock Option Agreement and Nonqualified Stock  Option Agreement
(incorporated by reference to Exhibit 10.1 to Annual  Report  on Form 10-K filed  March 31,
1996)

*10.3

1991 Stock Option Plan, as  amended October  17, 1996 (incorporated by reference to

Exhibit 10.2 to Annual Report on Form  10-K filed March 14, 2002)

*10.4

1999 Stock Option Plan (incorporated by reference  to  Exhibit 10.1 to Quarterly  Report  on

Form 10-Q filed August 9, 2006)

*10.5

1999 Nonstatutory Stock Option Plan, as amended through February 20, 2003 (incorporated
by reference to Exhibit 10.3 to Quarterly Report on Form 10-Q  filed August  9, 2006)

*10.6

Form of Notice of Grant of  Stock  Option under the 1999 Stock Option Plan (incorporated by

reference to Exhibit 10.2 to Quarterly Report  on Form 10-Q filed August 14, 2002)

*10.7

Form of Stock Option Agreement (incentive stock  options) under the  1999 Stock Option Plan

(incorporated by reference to Exhibit 10.4 to Quarterly Report on  Form 10-Q filed
August  9, 2006)

*10.8

*10.9

Form of Stock Option Agreement (nonstatutory stock options) under  the 1999 Stock  Option
Plan (incorporated by reference to Exhibit 10.5  to  Quarterly Report on Form  10-Q filed
August  9, 2006)

Form of Notice of Grant of  Stock  Option under the 1999 Nonstatutory Stock Option Plan
(incorporated by reference to Exhibit 10.3 to Quarterly Report on  Form 10-Q/A filed
November 14, 2007)

*10.10

Form of Stock Option Agreement under the  1999 Nonstatutory Stock Option Plan

(incorporated by reference to Exhibit 10.6 to Quarterly Report on  Form 10-Q filed
August  9, 2006)

120

Exhibit
Number

Exhibit Title

*10.11

2002 Outside Directors Stock Option Plan, as amended June 8, 2005  (incorporated  by

reference to Exhibit 99.2 to Current Report on  Form 8-K  filed June 14,  2005)

*10.13

Form of Nonqualified Stock Option Agreement under the 2002  Outside Directors  Plan
(incorporated by reference to Exhibit 10.2 to Quarterly Report on  Form 10-Q/A filed
November 14, 2007)

*10.12

2005 Equity Incentive Plan (incorporated by reference  to  Exhibit  99.1 to Current  Report  on

Form 8-K filed June 14, 2005)

*10.13

Form of Notice of Grant of  Stock  Option under the 2005 Equity Incentive Plan (incorporated

by reference to Exhibit 10.7 to Quarterly Report on Form 10-Q  filed August  9, 2006)

*10.14

Form of Stock Option Agreement under the  2005 Equity  Incentive Plan (incorporated by

reference to Exhibit 10.8 to Quarterly Report  on Form 10-Q filed August 9, 2006)

*10.15

Form of Notice of Grant of  Restricted Stock  Award under the 2005  Equity  Incentive  Plan

(incorporated by reference to Exhibit 10.9 to Quarterly Report on  Form 10-Q filed
August  9, 2006)

*10.16

Form of Restricted Stock Agreement under the  2005 Equity  Incentive Plan (for the  officers of

the Company) (incorporated by reference  to  Exhibit  10.10 to Quarterly Report on
Form 10-Q filed August 9, 2006)

*10.17 Executive Retention and Severance  Plan  adopted by the  Company on  October 10,  2001,

together with forms of Participation Agreement and Release  of  Claims Agreement
(incorporated by reference to Exhibit 10.40 to Annual  Report  on Form 10-K filed
March 14, 2002)

*10.18 Retiree Health Care Plan (incorporated by reference to Exhibit 10.50  to  Annual Report on

Form 10-K filed March 8, 2004)

*10.19

Form of Director and Officer  Indemnification Agreement (incorporated by reference to

Exhibit 10.1 to Registration Statement on  Form  S-1 filed December 16, 1991)

*10.20 Offer Letter between the Company and  Mr. Andrew  Guggenhime dated  February  3, 2006

(incorporated by reference to Exhibit 10.1 to Quarterly Report on  Form 10-Q filed May 10,
2006)

*10.21 Offer Letter between the Company and  Mr. Richard  Murray  dated February  1, 2003

(incorporated by reference to Exhibit 10.2 to Quarterly Report on  Form 10-Q filed May 10,
2007)

10.22 Lease Agreement between the  Company and Plymouth Business Center I Partnership, dated

February 10, 1992 (incorporated by reference to Exhibit 10.28  to  Annual Report on
Form 10-K filed March 31, 1993)

10.23 Amendment No. 1 to Lease Agreement between  the Company and Plymouth Business Center

I Partnership, dated July 8, 1993 (incorporated  by  reference to Exhibit 10.14  to  Annual
Report on Form 10-K filed March 31, 1994)

10.24 Amendment No. 2 to Lease Agreement between  the Company and St. Paul  Properties, Inc.,

effective October 25, 1994 (incorporated by reference to Exhibit 10.36  to  Annual Report on
Form 10-K filed March 31, 1995)

121

Exhibit
Number

Exhibit Title

10.25 Amendment No. 3 to Lease Agreement between the Company and St. Paul  Properties, Inc.,

effective November 27, 1996 (incorporated by Reference to Exhibit 10.39  to  Annual Report
on Form 10-K filed February 13, 1997)

10.26 Lease Agreement between the  Company and St. Paul Properties,  Inc., dated May 31, 2001

(incorporated by reference to Exhibit 10.4 to Quarterly Report on  Form 10-Q filed
August  13, 2001)

10.27

Sublease, effective July 6, 2006,  between Openwave Systems, Inc. and the Company  (for

building located at 1400 Seaport Boulevard, Redwood City, California) (incorporated by
reference to Exhibit 10.1 to Current Report on  Form 8-K  filed July 6,  2006)

10.28 Triple Net Space Lease, effective  July 6, 2006, between Pacific Shores Investors, LLC and  the

Company (for building located at 1400 Seaport Boulevard, Redwood  City,  California)
(incorporated by reference to Exhibit 10.2 to Current  Report on Form  8-K  filed July 6,
2006)

10.29 Triple Net Space Lease, effective  July 6, 2006, between the  Pacific Shores Investors,  LLC and

the Company (for building located at 1500 Seaport Boulevard,  Redwood City,  California)
(incorporated by reference to Exhibit 10.3 to Current  Report on Form  8-K  filed July 6,
2006)

10.30 License Agreement between  the Company  and  the Medical  Research Council of the  United
Kingdom dated July 1, 1989, as amended January 30,  1990 (incorporated  by reference  to
Exhibit 10.10 to Registration Statement on  Form  S-1 filed December 16, 1991)†

10.31

Patent Licensing Master Agreement between  the Company and Genentech,  Inc., dated

September 25, 1998 (incorporated by reference to Exhibit 10.10 to Quarterly Report on
Form 10-Q filed November 16, 1998)†

10.32 Amendment No. 1 to Patent Licensing Master Agreement  between the Company  and

Genentech, Inc., dated September 18, 2003  (incorporated  by  reference to Exhibit 10.45 to
Annual  Report on Form 10-K filed March 8, 2004)†

10.33 Amendment No. 2 to Patent Licensing Master Agreement  between the Company  and

Genentech, Inc., dated December 18, 2003 (incorporated by reference to Exhibit 10.46 to
Annual  Report on Form 10-K filed March 8, 2004)†

10.34 Amendment No. 1 to the Herceptin(cid:5) License Agreement between the Company  and

Genentech, Inc., dated December 18, 2003  (incorporated  by reference to Exhibit 10.47 to
Annual  Report on Form 10-K filed March 8,  2004)

10.35

10.36

10.37

PDL License Agreement between the Company  and Genentech, Inc.,  dated December  18,
2003 (incorporated by reference to Exhibit 10.48  to  Annual Report on Form  10-K filed
March 8, 2004)†

PDL License Agreement between the Company  and Genentech, Inc.,  dated December  18,
2003 (incorporated by reference to Exhibit 10.49  to  Annual Report on Form  10-K filed
March 8, 2004)†

Sublicense and Supply Agreement between Syntex (U.S.A) Inc. and American Home Products
Corporation dated September 1, 1993, re: Nicardipine IV and related letter assigning such
agreement to ESP Pharma, Inc. dated  October 30, 2003 (incorporated by reference to
Exhibit 10.1 to Quarterly Report on Form 10-Q filed May 10, 2005)†

122

Exhibit
Number

Exhibit Title

10.38 Letter Agreement dated September 5, 2003  between Roche Palo Alto LLC and  ESP

Pharma, Inc., amending Sublicense and Supply Agreement  (incorporated  by  reference to
Exhibit 10.2 to Quarterly Report on Form 10-Q filed  May  10, 2005)†

10.39 Collaboration Agreement between  the Company and Biogen Idec MA Inc., dated

September 12, 2005 (incorporated by reference to Exhibit 10.1 to Quarterly Report on
Form 10-Q filed November 8, 2005)†

14

See ‘‘Code of Ethics’’ in Item 10: Executive Officers and  Directors,  of  this  Annual Report on

21.1

23.1

31.1

Form 10-K

Subsidiaries of the Company

Consent of Independent Registered Public  Accounting Firm

Certification of Principal Executive Officer pursuant to Rule 13a-14(a) or Rule 15d-14(a) of

the Securities Exchange Act, as amended

31.2

Certification of Principal Accounting  Officer pursuant to Rule 13a-14(a) or Rule  15d-14(a) of

the Securities Exchange Act, as amended

32.1

Certification by the Principal Executive Officer and the Principal Accounting Officer of PDL
BioPharma, Inc., as required by Rule  13a-14(b) or  Rule 15d-14(b) and Section 1350 of
Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350)

* Management contract or compensatory plan or arrangement.

†

Certain information in this exhibit has been  omitted and filed separately with  the Securities and
Exchange Commission pursuant to a  confidential treatment request under 17 C.F.R.
Sections 200.80(b)(4) and 24b-2.

123

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
(In thousands)

(in thousands)

Year ended December 31, 2007:

Allowances for accounts receivable . . . . .
Reserve for excess and obsolete

Balance at
Beginning of
Year

Charged to
Costs and
Expenses

Deductions(1)

Charged
to Other
Accounts

Balance  at
End  of  Year

$13,709

$46,760

$ 44,035

$1,288

$17,722

inventory . . . . . . . . . . . . . . . . . . . . . .

$ 5,045

$

93

$ (4,898)

$ — $

240

Year ended December 31, 2006:

Allowances for accounts receivable . . . . .
Reserve for excess and obsolete

$12,895

$49,682

$(49,265)

$ 397

$13,709

inventory . . . . . . . . . . . . . . . . . . . . . .

$ 1,279

$ 4,780

$ (1,014)

$ — $ 5,045

(1) Deductions represent amounts written off  against the  allowances or reserve.

124

Pursuant to the requirements of Section  13  or 15(d) of the Securities Exchange Act of 1934, the

registrant has duly caused this report to be signed on its  behalf  by the undersigned,  thereunto duly
authorized.

SIGNATURES

PDL BIOPHARMA, INC. (REGISTRANT)

By: /s/ L. PATRICK GAGE

L. Patrick Gage
Interim Chief Executive Officer

Date:  March  13,  2008

Pursuant to the requirements of the Securities Exchange  Act of 1934, this report has been signed

below by the following persons on behalf of  the Registrant and  in the capacities and  on the dates
indicated.

Signature

Title

Date

/s/ L. PATRICK GAGE

(L. Patrick Gage)

Interim Chief Executive Officer and Director
(Principal Executive Officer)

March 13, 2008

/s/ ANDREW L. GUGGENHIME

(Andrew L. Guggenhime)

Senior Vice President and Chief Financial
Officer (Principal Financial Officer and
Principal Accounting Officer)

March 13, 2008

/s/ HERB C. CROSS

(Herb C. Cross)

/s/ KAREN A. DAWES

(Karen A. Dawes)

(Laurence Jay Korn)

/s/ JON S. SAXE

(Jon S. Saxe)

/s/ JOSEPH KLEIN III

(Joseph  Klein III)

Corporate Controller (Principal Accounting
Officer)

March 13, 2008

Chairperson of the Board of Directors

March 13,  2008

Director

Director

Director

March  13,  2008

March 13, 2008

/s/ BRADFORD S. GOODWIN

Director

March  13,  2008

(Bradford S. Goodwin)

/s/ RICH MURRAY

(Rich Murray)

Executive Vice President, Chief Scientific
Officer  and  Director

March 13, 2008

125

Our antibody humanization technology has 
made possible nine life–changing medicines.  
We’re currently focused on leveraging our 
core expertise to discover and develop a new 
stream of innovative antibody products tar-
geting oncology and immunologic diseases, 
while we work to optimize the value of our 
successful antibody humanization royalties.

MANAGEMENT 

L. Patrick Gage, Ph.D.
Interim Chief Executive Officer

Richard Murray, Ph.D.
Executive Vice President and
Chief Scientific Officer

Andrew Guggenhime
Senior Vice President and
Chief Financial Officer

Mark McCamish, M.D., Ph.D.
Senior Vice President and
Chief Medical Officer

Jaisim Shah
Senior Vice President, Marketing  
and Business Affairs

Francis Sarena
Executive Director, 
Chief Legal Officer and Secretary

BOARD OF DIRECTORS

Karen A. Dawes
L. Patrick Gage, Ph.D.
Brad S. Goodwin
Joseph Klein III 
Laurence Jay Korn, Ph.D.
Richard Murray, Ph.D.
Jon S. Saxe, Esq.

CORPORATE INFORMATION

Corporate Headquarters
1400 Seaport Blvd.
Redwood City, CA 94063
Tel:   650-454-1000
Fax:  650-454-2000
www.pdl.com

Transfer Agent and Registrar
BNY Mellon Shareowner Services
P. O. Box 358015
Pittsburgh, PA 15252-8015
or
480 Washington Blvd.
Jersey City, NJ 07310-1900
Tel:  800-522-6645 (US)

201-680-6578 (outside US)

TDD for hearing impaired: 
800-231-5469 (US)
201-680-6610 (outside US)
www.bnymellon.com/shareowner/isd

Independent Auditors
Ernst & Young LLP
Palo Alto, CA 

Corporate Counsel
DLA Piper US LLP
San Francisco, CA

Annual Meeting
2008 Annual Meeting of Stockholders will 
be held on May 28, 2008 at 9 a.m. at PDL 
BioPharma, 1400 Seaport Blvd., Redwood 
City, CA 94063

CORPORATE GOVERNANCE 
DOCUMENTS

PDL’s corporate governance guidelines,  
annual report, SEC filings, and code of  
conduct for directors, officers (including 
our principal executive officer, principal 
financial officer and principal accounting 
officer) and employees can be obtained 
free on our website at www.pdl.com. 

Additionally, stockholders may receive 
copies upon request to:

Corporate and Investor Relations
PDL BioPharma, Inc.
1400 Seaport Blvd.
Redwood City, CA 94063
Tel:   650-454-1508
Fax:  650-454-2000

Stock Listing
Our common stock trades on the NASDAQ 
Global Select Market under the symbol 
“PDLI.”  We had never declared any cash 
dividends on our capital stock prior to 
March 2008, when we declared a $4.25  
per share of common stock dividend.   

We also announced in March 2008 that we 
plan to spin off our biotechnology related 
assets, which we intend to complete by 
the end of 2008, and that thereafter we 
plan to distribute future antibody human-
ization royalty revenues, net of any operat-
ing expenses, debt service and income 
taxes, to our stockholders.

Price Range of Common Stock
As of March 31, 2008, we had approxi-
mately 242 common stockholders of 
record. Because brokers and other 
institutions hold many of these shares on 
behalf of stockholders, we are unable to 
estimate the total number of stockhold-
ers represented by the record holders, but 
we believe that they are well in excess of 
record holders. The following table sets 
forth the quarterly high and low bid prices 
for a share of PDL common stock for the 
fiscal years ended December 31, 2006 and 
2007, as reported by the NASDAQ Global 
Select Market. 

2006 

Q1 
Q2 
Q3 
Q4 

2007 

Q1 
Q2 
Q3 
Q4 

High 

$ 33.30 
$ 32.97 
$ 19.95 
$ 23.29 

High 

$ 21.69 
$ 27.46 
$ 24.16 
$ 21.31 

Low

$ 27.15
$ 16.79
$ 16.39
$ 18.70

Low

$ 18.78
$ 23.02
$ 20.23
$ 17.72

Design: Helene Sherlock     l    Photograph: Kingmond Young

 
 
 
 
PDL BIOPHARMA, INC.

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1400 Seaport Blvd.
Redwood City, CA 94063
Tel:  650-454-1000
Fax:  650-454-2000
www.pdl.com

A N N U A L   R E P O R T