Tagged as: filgrastim

Filgrastim PTAB Update

As we previously reported, earlier this year Kashiv Biosciences filed two inter partes review (IPR) petitions challenging certain claims of Amgen’s U.S. Patent Nos. 8,940,878 and 9,643,997, which are directed to methods to purify proteins expressed in a non-native soluble form in a non-mammalian expression system.  Amgen is asserting the ’878 and…

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BREAKING NEWS: Federal Circuit Affirms Sandoz’s Victory Over Amgen in Filgrastim and Pegfilgrastim Biosimilar Patent Litigation

This morning, the Federal Circuit issued a precedential opinion affirming the district court’s judgment of non-infringement in favor of Sandoz in its BPCIA litigation against Amgen concerning Sandoz’s Zarxio® (filgrastim-sndz) biosimilar product and proposed pegfilgrastim biosimilar.  As we previously reported, in December 2017 the Northern California district court granted summary…

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PTAB Institutes PGR of Protein Refolding Patent at Issue in Filgrastim and Pegfilgrastim Litigations

U.S. Patent No. 9,856,287, which is directed to a protein refolding method, is one of the patents-in-suit in the pending Amgen v. Adello (filgrastim) BPCIA litigation and the sole patent-in-suit in the pending Amgen v. Apotex (filgrastim and pegfilgrastim) BPCIA litigation. As we previously reported, in November 2018, Adello and…

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Sandoz Initiates Declaratory Judgment Action Against Amgen Concerning Manufacturing of Filgrastim and Pegfilgrastim Biosimilars

On February 21, 2019, Sandoz initiated a lawsuit against Amgen in the Northern District of California seeking a declaration that its biosimilar filgrastim and pegfilgrastim products do not infringe the Amgen’s ’997 patent. The ’997 patent relates to a method of protein purification and is in the same patent family…

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Tanvex’s New Drug Submission for Filgrastim Biosimilar to Health Canada

BioSimilars Patent Dance

Last October, we reported that Taiwan-based Tanvex BioPharma (“Tanvex”) announced that it had submitted a BLA to the FDA seeking approval of TX-01, a proposed biosimilar referencing Neupogen® (filgrastim) indicated for chemotherapy induced neutropenia. Last November, the FDA accepted Tanvex’s BLA for its filgrastim biosimilar. This week Tanvex has submitted a New Drug Submission (NDS) to…

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Litigation Update: Case Management Statement in Amgen v. Sandoz (filgrastim, pegfilgrastim)

The parties in Amgen v. Sandoz (N.D. Cal.) (filgrastim and pegfilgrastim) have submitted a joint case management statement regarding the two pending cases between the parties: Case No. 3:14-cv-04741-RS (accused product: Zarxio® (filgrsatim-sndz), which Sandoz launched in September, 2015) and Case No. 3:16-cv-02581-RS (accused product: pegfilgrastim (biosimilar to Amgen’s Neulasta®). The parties…

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