In February of this year, Amgen filed three petitions for inter partes review (IPR) of Alexion Pharmaceuticals’ U.S. Patent Nos. 9,725,504 (IPR2019-00739), 9,718,880 (IPR2019-00740), and 9,732,149 (IPR2019-00741). The claims of the challenged patents are directed to the monoclonal antibody eculizumab, which is the active ingredient in Alexion’s SOLIRIS, or methods…
