Regeneron and Sanofi win out in patent war with Amgen

19 May 2023

US biotech Amgen (Nasdaq: AMGN) has lost out in a court ruling relating to its PCSK9 inhibitor, Repatha (evolocumab), a cholesterol-lowering drug.

The US Supreme Court ruling went in favor of rival firm Sanofi (Euronext: SAN) and its partner Regeneron (Nasdaq: REGN) instead.

The court decision ends nearly a decade-long patent dispute related to the Regeneron-invented PCSK9 inhibitor, Praluent (alirocumab), a drug that has been developed and sold in partnership with Sanofi.

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