Polsinelli Podcasts - FDA Denies Amgen Citizen Petition in Biosimilar Dispute
On July 1, 2025, Fresenius Kabi announced the U.S. launch of Conexxence™ / Bomyntra™ (denosumab-bnht), biosimilars of Amgen’s Prolia® / Xgeva® (denosumab), pursuant to a settlement agreement between the parties ending BPCIA...more
On June 2, 2025, the Patent Trial and Appeal Board (“Board”) issued decisions denying institution of Samsung Bioepis’s IPR2025-00176 and Formycon’s IPR2025-00233 against claims 1–12, 14–17, 19, 20, 22–36, 39–42, 44, 45, and...more
On December 6, 2019, the Federal Circuit will hear oral argument in a rituximab-related appeal by Biogen. The appeal stems from a final written decision of the Patent Trial and Appeal Board (PTAB) in an inter partes review...more
Here are our picks of some legal developments to keep an eye out for in the new year: 1. Etanercept biosimilar trial decision – This past September, in the Immunex v. Sandoz BPCIA patent litigation concerning Sandoz’s...more
Today, Genentech filed a complaint in the District of Delaware against Amgen concerning its aBLA for ABP 980, a proposed biosimilar of Herceptin® (trastuzumab). Genentech alleges infringement of 37 patents directed to a...more
2017 was an eventful year for biosimilars in the U.S. As the number of biosimilar filings increased, important legal and regulatory decisions changed the strategic landscape of the biosimilars market for both innovators and...more
The Supreme Court could issue its decision in the Amgen v. Sandoz biosimilar patent dance case any day now. Last week I participated in a panel discussion with industry stakeholders considering how the decision might–or might...more
Many biosimilar applicants have resorted to inter partes review (IPR) proceedings to challenge innovator patents as an alternative forum to district court litigation under the BPCIA. For those biosimilar applicants that...more
To date, Amgen has been the reference product sponsor for many biosimilar applications. Correspondingly, Amgen has been the Plaintiff in many of the litigations that have been based on the provisions of the Biosimilar Price...more
WBIP, LLC v. Kohler Co. (No. 2015-1038, -1044, 7/19/16) (Moore, O'Malley, Chen) - Moore, J. Affirming denial of JMOL that patent was invalid as obvious and lacked an adequate written description, affirming finding of...more
Amgen’s Enbrel (etanercept), a blockbuster biologic treatment for a number of autoimmune diseases, including rheumatoid arthritis and psoriasis, has been an attractive target for biosimilar makers. Sandoz, the maker of...more
Although Sandoz’ application for FDA approval to market a biosimilar version of ENBREL® (etanercept) has yet to be approved, Amgen has brought suit under the Patent Act and Biologics Price Competition and Innovation Act...more
The USPTO Patent Trial and Appeal Board (PTAB) denied institution of two Inter Partes Review challenges brought by Amgen, Inc. against two Humira patents covering stable formulations of anti-human Tumor Necrosis Factor alpha...more
On November 25, 2015, Amgen Inc. (“Amgen”) announced it submitted its first biologics license application (“BLA”) to the FDA under the Section 351(k) biosimilar approval pathway provided in the Biologics Price Competition and...more