Last week, the PTAB instituted inter partes review of two Chugai patents directed to methods of treating rheumatoid arthritis with a combination of tocilizumab and methotrexate. Fresenius filed petitions for inter partes review on U.S. Patent Nos. 7,521,052 (“the ’052 patent”) and 10,744,201 (“the ’201 patent”) on June 28, 2021. …
