Over the last two weeks, Pfizer, Inc. (“Pfizer”) has filed petitions for inter partes review (“IPR”) of three additional patents related to Biogen and Genentech’s Rituxan® (rituximab) at the Patent Trial and Appeal Board (“PTAB”). The proceedings are: IPR2017-01166, filed on April 21, 2017, regarding U.S. Patent No. 8,329,172 (“the ’172 patent”); IPR2017-1167, filed on
