On February 11, 2020, Amgen sued Pfizer and its affiliate Hospira for patent infringement based on their proposed biosimilar of NEULASTA (pegfilgrastim). Pegfilgrastim is indicated for decreasing the incidence of infection in patients receiving myelosuppressive chemotherapy. In the complaint, Amgen alleges that Hospira’s aBLA infringes U.S. Patent No. 8,273,707 (“the…