Sanofi-Aventis Sues To Protect Ambien Market

Law360, New York (May 15, 2007, 12:00 AM EDT) -- Sanofi-Aventis has filed a patent suit over Ambien CR, marking at least the second time since February the French pharmaceutical giant has attempted to keep a generic competitor out of the multibillion-dollar market for the insomnia drug.

The lawsuit was filed by Sanofi-Aventis and its U.S. subsidiary against Mutual Pharmaceutical Company Inc., United Research Laboratories Inc. and parent company Pharmaceutical Holdings Corp. on Friday in the U.S. District Court for the District of New Jersey.

At issue in the suit is U.S. Patent Number 6,514,531, which...
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