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Biovail Sues Impax Over Wellbutrin XL Patent

Law360 (March 9, 2005, 12:00 AM EST) -- A subsidiary of Canadian drug maker Biovail Corp. has filed a lawsuit against Impax Laboratories Inc. over Impax's plans to launch a generic version of Biovail's antidepressant drug Wellbutrin XL.

The lawsuit, filed in the U.S. District Court for the Eastern District of Pennsylvania in Philadelphia, alleges patent infringement related to Impax’s filing for a generic version of the antidepressant with the U.S. Food and Drug Administration.

Impax has submitted its filing under Paragraph IV of the Hatch-Waxman Amendments, stating that it believes its generic versions...
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