Par Sues UCB Over Generic Keppra

Law360 (March 25, 2011, 2:04 PM EDT) -- Par Pharmaceutical Cos. Inc. filed suit Wednesday in Pennsylvania seeking declaratory judgment that its proposed generic version of epilepsy treatment Keppra XR doesn't infringe UCB Pharma SA's patents covering the drug.

Par's submission of an abbreviated new drug application for permission to manufacture generic oral levetiracetam extended release tablets does not infringe U.S. Patent Numbers 7,858,122 and 7,863,316 because the patents are invalid and unenforceable, the plaintiff claims in a complaint filed in the U.S. District Court for the Eastern District of Pennsylvania.

The asserted patents, both titled "Extended release formulation of levetiracetam," are owned by Brussels-based UCB Pharma through assignment...

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