Purdue Sues Impax, Ranbaxy Over Generic OxyContin

Law360, New York (April 11, 2011, 7:05 PM EDT) -- Purdue Pharma LP hit Ranbaxy Inc. and Impax Laboratories Inc. with patent infringement suits Friday in New York federal court, challenging their plans for generic versions of Purdue's painkiller OxyContin.

The two lawsuits, filed in the U.S. District Court for the Southern District of New York, allege that abbreviated new drug applications by both companies for generic OxyContin infringe Purdue's patents.

Impax said in a statement Monday that it planned to challenge Purdue's patents on OxyContin. If its application for a generic version is approved by...
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