Endo and Penwest Announce Settlement of Opana(R) ER Litigation

Endo and Penwest Announce Settlement of Opana(R) ER Litigation

CHADDS FORD, Pa. and DANBURY, Conn., Feb. 20 /PRNewswire-FirstCall/ -- Endo Pharmaceuticals (Nasdaq: ENDP), and Penwest Pharmaceuticals (Nasdaq: PPCO) announced today that the companies have settled litigation with Actavis South Atlantic LLC regarding the production and sale of generic formulations of Opana(R) ER (oxymorphone hydrochloride) Extended Release Tablets CII. Endo and Penwest have agreed to dismiss their suit with prejudice and Actavis has agreed to dismiss its counterclaims with prejudice.

Under the terms of the settlement, Endo and Penwest have agreed to grant Actavis a license and a covenant not to sue to the patents in suit to sell a generic of Opana ER on or after July 15, 2011, and earlier under certain circumstances.

About Endo

Endo Pharmaceuticals is a specialty pharmaceutical company engaged in the research, development, sale and marketing of branded and generic prescription pharmaceuticals used primarily to treat and manage pain. Its products include LIDODERM(R), a topical patch to relieve the pain of postherpetic neuralgia; PERCOCET(R) and PERCODAN(R) tablets for the relief of moderate-to-moderately severe pain; FROVA(R) tablets for the acute treatment of migraine attacks with or without aura in adults; OPANA(R) tablets for the relief of moderate-to-severe acute pain where the use of an opioid is appropriate; OPANA(R) ER tablets for the relief of moderate-to-severe pain in patients requiring continuous, around-the-clock opioid treatment for an extended period of time; and VOLTAREN(R) gel, a nonsteroidal anti-inflammatory drug indicated for the relief of the pain of osteoarthritis of joints amenable to topical treatment. The company markets its branded pharmaceutical products to physicians in pain management, neurology, surgery, oncology, and primary care. More information, including this and past press releases of Endo Pharmaceuticals, is available at www.endo.com.

About Penwest

Penwest is a drug development company focused on identifying, developing and commercializing products that address unmet medical needs, primarily for disorders of the nervous system. Penwest is currently applying its drug development and drug delivery expertise to the development of products that are in various stages of development, and that it intends to commercialize independently or through third party alliances.

Safe Harbor Statement for Endo

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Statements including words such as "believes," "expects," "anticipates," "intends," "estimates," "plan," "will," "may," "intend," "guidance" or similar expressions are forward-looking statements. Because these statements reflect our current views, expectations and beliefs concerning future events, these forward-looking statements involve risks and uncertainties. Investors should note that many factors could affect our future financial results and could cause our actual results to differ materially from those expressed in forward-looking statements contained in this press release. Risks and uncertainties include the satisfaction of closing conditions for the acquisition, including clearance under the Hart-Scott-Rodino Antitrust Improvements Act; the tender of a majority of the outstanding shares of common stock of Indevus; the possibility that the transaction will not be completed, or if completed, not completed on a timely basis; the possibility that the acquisition of Indevus is not complementary to Endo; the potential that market segment growth will not follow historical patterns; general industry conditions and competition; business and economic conditions, such as interest rate and currency exchange rate fluctuations; technological advances and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approvals; domestic and foreign health care reforms and governmental laws and regulations; and trends toward health care cost containment; and other risks and uncertainties, including those detailed from time to time in our periodic reports filed with the Securities and Exchange Commission, including our current reports on Form 8-K, quarterly reports on Form 10-Q and annual reports on Form 10-K, particularly the discussion under the caption "Item 1A, RISK FACTORS" in our annual report on Form 10-K/A for the year ended December 31, 2007, which was filed with the Securities and Exchange Commission on April 29, 2008. The forward-looking statements in this press release and on the related conference call are qualified by these risk factors. These are factors that, individually or in the aggregate, we think could cause our actual results to differ materially from expected and historical results. We assume no obligation to publicly update any forward-looking statements, whether as a result of new information, future developments or otherwise.

Safe Harbor Statement for Penwest

The matters discussed herein contain forward-looking statements that involve risks and uncertainties, which may cause the actual results in future periods to be materially different from any future performance suggested herein. For this purpose, any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. Without limiting the foregoing, the words, "believes," "anticipates," "plans," "expects," "intends," "potential," and similar expressions are intended to identify forward-looking statements. Important factors that could cause results to differ materially include: risks relating to the commercial success of Opana ER, including our reliance on Endo Pharmaceuticals Inc. for the commercial success of Opana ER and risks of generic competition, the need for capital; regulatory risks relating to drugs in development, including the timing and outcome of regulatory submissions and regulatory actions; uncertainty of success of collaborations; the timing of clinical trials; whether the results of clinical trials will warrant further clinical trials, warrant submission of an application for regulatory approval of, or warrant the regulatory approval of, the product that is the subject of the trial; whether the patents and patent applications owned by us will protect the Company's products and technology; actual and potential competition; and other risks as set forth under the caption Risk Factors in Penwest's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 10, 2008, which risk factors are incorporated herein by reference.

The forward-looking statements contained in this press release speak only as of the date of the statements made. Penwest disclaims any intention or obligation to update any forward-looking statements. TIMERx is a registered trademark of Penwest. All other trademarks referenced herein are the property of their respective owners.

SOURCE Endo Pharmaceuticals