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Purdue's Anti-Abuse OxyContin Patent Claims Found Invalid

By Brandon Lowrey (April 8, 2015, 6:26 PM EDT) -- A New York federal judge on Wednesday ruled that although Amneal Pharmaceuticals LLC infringed Purdue Pharma LP's patent with its generic version of an abuse-resistant variety of the pain medication OxyContin, Purdue's asserted claims are invalid as obvious and indefinite....

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