Federal Circuit Slams Purdue With Inequitable Conduct Finding In OxyContent Patent Suit

Law360, New York (June 7, 2005, 12:00 AM EDT) -- In a major setback for Purdue Pharma, Endo Pharmaceutical Holdings Inc. has won an appeals court ruling allowing it to sell a generic version of the painkiller OxyContin.

The U.S. Court of Appeals for the Federal Circuit upheld a decision that three patents held by Purdue Pharma LP are unenforceable due to inequitable conduct before the U.S. Patent and Trademark Office.

The decision upholds a January 2004 ruling from U.S. District Court Judge Sidney Stein with the Southern District of New York.

Judge Stein found that...
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