Sanofi Sues Sandoz To Protect Ambien Patent

Law360 (March 11, 2008, 12:00 AM EDT) -- Sanofi-Aventis filed suit Friday against Sandoz Inc., the generics subsidiary of Novartis AG, in an effort to keep Sandoz from marketing its own version of Sanofi's popular insomnia drug Ambien CR.

Sandoz recently filed an abbreviated new drug application with the U.S. Food and Drug Administration to market a generic extended-release pill containing zolpidem tartrate, the active ingredient in Ambien, before Sanofi's patent on the drug, U.S. Patent Number 6,514,531, expires, Sanofi says in a complaint filed in the U.S. District Court for the District of...
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