Tocilizumab Challenged Claim Types in IPRs: Claims are counted in each IPR, so claims from the same patent challenged in multiple IPRs are counted more than once. Within each IPR, claims are counted only once, whether they...more
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 17, 2025, Senators Chuck Grassley (R-IA), John Cornyn (R-TX), Richard Blumenthal (D-CT), and Richard Durbin (D-IL) re-introduced the “Affordable Prescriptions for Patients Act” (“APPA”), which previously passed the...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
The Supreme Court recently denied Chrimar Systems, Inc. (Chrimar)’s petition for certiorari seeking to overturn the Federal Circuit’s “Fresenius/Simmons preclusion principle,” under which Chrimar’s district court victory...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