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.
March 13, 2026
Sandoz Inc. is appealing after a Virginia federal court ruled it should have brought claims accusing Amgen of blocking competition for the Enbrel biosimilar in a previous patent dispute, according to a Friday notice.
February 18, 2026
A Virginia federal court found that Sandoz Inc. should have brought its claims accusing Amgen of blocking competition for Enbrel in a previous patent dispute over the blockbuster autoimmune disease treatment.
April 14, 2025
Sandoz accused Amgen of illegally blocking biosimilar competition to its blockbuster Enbrel drug for arthritis and other inflammatory diseases, alleging that the company used strategic acquisitions and illegal patent extensions to fend off challengers in the space and inflate U.S. prices for its drug.