July 09, 2026
Retired U.S. Circuit Judge Paul R. Michel is backing Amgen against Sandoz's Fourth Circuit appeal, arguing in an amicus brief that the final say over now-nixed allegations of blocked biosimilar competition to arthritis drug Enbrel came when Amgen successfully sued Sandoz for patent infringement.
July 07, 2026
Pharmaceutical groups and the Washington Legal Foundation backed Amgen in amicus briefs Monday urging the Fourth Circuit not to revive Sandoz's antitrust claims, arguing that if Sandoz wanted to litigate blocked biosimilar competition to Enbrel, it needed to do so when Amgen sued it for patent infringement.