Judge wipes out Biogen's Tecfidera patent protections in suit against Mylan

In the high-stakes patent fight between Biogen and Mylan over Tecfidera’s only remaining patent, Mylan has scored a major win in federal court.

U.S. District Judge Irene Keeley said Mylan “demonstrated by clear and convincing evidence” that certain claims of Biogen’s '514 patent are invalid for “lack of written description.”