Purdue Sues To Block Abuse-Proof OxyContin Generics

Law360, New York (February 4, 2013, 7:23 PM EST) -- Purdue Pharma LP and Grunenthal GmbH on Friday sued two rivals in New York federal court, alleging their planned generic versions of painkiller OxyContin infringed two patents covering a so-called abuse-proof version of the drug.

According to the suits, abbreviated new drug applications by two units of Watson Pharmaceuticals Inc. — now a part of Actavis Inc. — and Impax Laboratories Inc. for generic oxycodone hydrochloride extended-release tablets, covering seven various dosage strengths between 10 and 80 milligrams, had infringed at least one of two patents...
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