On July 14, 2025, Fresenius Kabi filed IPR2025-01268 against Regeneron’s U.S. Patent No. 11,084,865 (“the ’865 patent”) and IPR2025-01269 against U.S. Patent No. 10,828,345 (“the ’345 patent”), both relating to EYLEA®...more
On July 14, 2025 Fresenius filed two IPR petitions challenging Regeneron’s patents related to aflibercept. Regeneron has not asserted that Fresenius infringes either of these patents in district court litigation; however,...more
On March 3, 2022, the PTAB instituted another inter partes review of U.S. Patent Nos. 8,580,264 (“the ’264 patent”), owned by Chugai and Roche. Fresenius filed a petition for inter partes review of the ‘264 patent,...more
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...more
As we close out another calendar year, we look back at the top legal developments of 2021 that could influence the market for biologics and biosimilars. There were many interesting decisions and other developments in district...more
As previously reported, earlier this year Fresenius filed a petition for inter partes review of claims 9-10, 13-21 and 23-30 of Amgen’s pegfilgrastim patent – U.S. Patent No. 9,643,997 (“997 patent”). The challenged claims of...more