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Abbott Sues Impax Over Depakote

Law360 (June 20, 2007, 12:00 AM EDT) -- Abbott Laboratories filed a patent suit Monday against generics maker Impax Laboratories Inc., increasing its efforts to protect the multimillion-dollar U.S. market for its epilepsy and migraine treatment Depakote.

In a complaint filed in the U.S. District Court for the District of Delaware, Abbott alleged that a recent abbreviated new drug application filed by Impax with the U.S. Food and Drug Administration infringed two patents for Depakote ER, the extended release version of its blockbuster drug. Abbott asserted one of the patents in a similar suit...
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