Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) and Sanofi announced today that the U.S. District Court for the District of Delaware ruled in their favor and found as a matter of law that Amgen’s asserted patent claims for antibodies targeting PCSK9 (proprotein convertase subtilisin/kexin type 9) are invalid based on lack of enablement. “Today’s decision by the U.S. District Court for the District of Delaware validates our position that Amgen’s patents are overly broad and invalid,” said Joseph LaRosa, Executive Vice President, General Counsel and Secretary, Regeneron.

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