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Watson Confirms Vyvanse® Patent Challenge

PARSIPPANY, N.J., July 7, 2011 /PRNewswire/ -- Watson Pharmaceuticals, Inc. (NYSE: WPI) today confirmed that its subsidiary, Watson Laboratories, Inc., filed an Abbreviated New Drug Application (ANDA) with the U.S. Food and Drug Administration (FDA) seeking approval to market lisdexamfetamine dimesylate capsules.  Watson's lisdexamfetamine dimesylate capsules are a generic version of Shire LLC's Vyvanse®. Vyvanse® is a prescription medicine for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in children ages 6 to 17 and adults.

Shire filed suit against Watson on July 7, 2011 in the United States District Court for the Central District of California seeking to prevent Watson from commercializing its product prior to the expiration of certain U.S. Patents. Shire's lawsuit was filed under the provisions of the Hatch-Waxman Act, resulting in a stay of final FDA approval of Watson's ANDA until August 23, 2014 or until final resolution of the matter before the court, whichever occurs sooner, subject to any other exclusivities.  

For the twelve months ending April 30, 2011, Vyvanse® capsules had total U.S. sales of approximately $1.1 billion according to IMS Health data.

About Watson Pharmaceuticals, Inc.Watson Pharmaceuticals, Inc. is a leading integrated global pharmaceutical company. The Company is engaged in the development and distribution of generic pharmaceuticals and specialized branded pharmaceutical products focused on Urology and Women's Health. Watson has operations in many of the world's established and growing international markets.

For press release and other company information, visit Watson Pharmaceuticals' Web site at

Forward-Looking Statement Statements contained in this press release that refer to non-historical facts are forward-looking statements that reflect Watson's current perspective of existing information as of the date of this release. It is important to note that Watson's goals and expectations are not predictions of actual performance. Actual results may differ materially from Watson's current expectations depending upon a number of factors, risks and uncertainties affecting Watson's business. These factors include, among others, the difficulty of predicting the timing or outcome of product development efforts, including FDA and other regulatory agency approvals and actions, if any; the difficulty of predicting the timing and outcome of the pending patent litigation; the impact of competitive products and pricing; the timing and success of product launches; difficulties or delays in manufacturing; the availability and pricing of third party sourced products and materials; successful compliance with FDA and other governmental regulations applicable to Watson and its third party manufacturers' facilities, products and/or businesses; changes in the laws and regulations, including Medicare and Medicaid, affecting among other things, pricing and reimbursement of pharmaceutical products; and such other risks and uncertainties detailed in Watson's periodic public filings with the Securities and Exchange Commission, including but not limited to Watson's quarterly report on form 10-Q for the quarter ended March 31, 2011 and Watson's annual report on Form 10-K for the year ended December 31, 2010. Except as expressly required by law, Watson disclaims any intent or obligation to update these forward-looking statements.

Vyvanse®  is a registered trademark of Shire LLC.

(Logo: Eisenhaur(862) 261-8141Media:Charlie Mayr(862) 261-8030

SOURCE Watson Pharmaceuticals, Inc.
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