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Shire Files Suit against Impax and Watson

By R&D Editors | December 3, 2010

Shire plc announced that its subsidiary Shire LLC has filed a lawsuit in the U.S. District Court for the Northern District of California against Impax Laboratories, Inc. and Watson Pharmaceuticals, Inc., Watson Laboratories, Inc.-Florida, Watson Pharma, Inc and ANDA, Inc. for the infringement of U.S. Patent Nos. 5,854,290 (the ’290 patent), 6,287,599 (the ’599 patent), and 6,811,794 (the ’794 patent).

The lawsuit results from Abbreviated New Drug Applications (ANDAs) filed by Impax and Watson for generic versions of 4 mg guanfacine hydrochloride extended release tablets, INTUNIV, which seek to market such generic products before the expiration of the ’290, ’599, and ’794 patents. The regulatory exclusivity period for INTUNIV runs through September 2, 2012.

Date: December 3, 2010
Source: SHIRE PLC 

 

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