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Merck Can't Get Fed. Circ. To Reconsider Axing MS Drug Patents

By Ryan Davis ( January 22, 2026, 7:14 PM EST) -- The Federal Circuit on Thursday refused to reconsider decisions invalidating Merck KGaA patents on the blockbuster multiple sclerosis drug Mavenclad, turning aside the German drugmaker's claim that the court set an unjust new rule that means inventors' work can later be used against them....

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