Amgen joins battle with Sanofi and Regeneron over Dupixent
Immunex has initiated legal proceedings against French pharma major Sanofi (Euronext: SAN) and US biotech Regeneron Pharmaceuticals (Nasdaq: REGN).
The Amgen (Nasdaq: AMGN) subsidiary filed the suit in a Californian court, alleging that the companies’ atopic dermatitis drug Dupixent (dupilumab) infringes one of its patents related to a failed asthma treatment.
The case adds to an increasingly fractious web of litigation between the companies, which since 2014 have been feuding over cholesterol drugs Praluent (alirocumab) and Repatha (evolocumab).
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