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Goodwin’s award-winning Big Molecule Watch is the best resource for daily updates and analyses of regulatory issues, litigation, legislation, and other news in the world of biologics, biosimilars and related technologies. The editors of this blog have collectively been watching and engaging with the world of biologics and biosimilars (“big molecules”) since before the inception of the biosimilar industry in the U.S.  With extensive experience representing clients at all stages of a biologic’s or biosimilar’s lifecycle, from research and development, to patents, to regulatory application and approval, and through litigation and appeals, we are excited to share our observations and insights as the industry and the law continues to develop in this exciting area.

This blog focuses on “big molecules” as opposed to “small molecules.” Small molecule drugs have low molecular weight, a simple and well-defined structure, and are chemically synthesized. In contrast, “big molecule” drugs have high molecular weight, complex structures, and are derived from living organisms. For example, aspirin is small molecule while a monoclonal antibody is a big molecule. For further reading on big molecules, consider FDA's resources on biologics.

District Court Grants Summary Judgment and Invalidates Patent in REGENXBIO v. Sarepta Litigation

On January 5, 2024, in litigation between REGENXBIO and Sarepta Therapeutics, Judge Richard Andrews of the U.S. District Court for the District of Delaware District Court granted summary judgment for Sarepta and ruled that University of Pennsylvania’s (“Penn”) U.S. Patent No. 10,526,617 (the ’617 Patent; licensed to REGENXBIO) is invalid…

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Regeneron’s Disputes with Celltrion, Samsung Bioepis, and Formcycon on Service and Personal Jurisdiction in Aflibercept BPCIA Litigation

As we have previously reported, in November 2023 Regeneron Pharmaceuticals, Inc. (“Regeneron”) filed complaints against Celltrion,  Samsung Bioepis and Formycon (collectively, “the Defendants”) in the U.S. District Court for the Northern District of West Virginia, alleging patent infringement under the Biologics Price Competition and Innovation Act (“BPCIA”) based on the…

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Updates on Aflibercept BPCIA Litigation

Emergency Motion for Entry of a PI Schedule Against Celltrion, Formcyon, and Samsung Bioepis On December 28, Regeneron filed emergency motions for entry of a PI schedule in its aflibercept BPCIA cases against Celltrion, Inc., Formycon AG, and Samsung Bioepis (“Samsung”).  Regeneron seeks a PI schedule to “ensure an orderly…

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Breaking: Judgment in Regeneron v. Mylan (aflibercept) BPCIA Case Finding Some Claims of Asserted Patents Valid and Infringed

As previously reported by Big Molecule Watch, trial in Regeneron’s BPCIA case against Biocon regarding Biocon’s proposed aflibercept biosimilar concluded on June 15, 2023 in the Northern District of West Virginia.  The patents-at-issue are directed to formulations and dosing regimens for aflibercept, an anti-VEGF treatment for retinal disorders including age-related…

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Year in Review: Top Deals in 2023

According to PWC, “2023 was a reasonably strong year for the pharmaceutical and life sciences sector with both deal value and volume of M&A close to pre-pandemic levels.” Below is a recap of the top M&A deals in 2023 that focus on biologics and biosimilars and were covered on the…

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CRISPR Regulatory Updates

European Medicines Agency

On December 15, 2023, Vertex announced that the Committee for Medicinal Products for Human Use of the European Medicines Agency has adopted a positive opinion for the conditional approval of CASGEVY (exagamglogene autotemcel [exa-cel]), a CRISPR/Cas9 gene-edited therapy, for the treatment of severe sickle cell disease (SCD) and transfusion-dependent beta…

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Updates on Patent Challenges by Biosimilar Manufacturers at the PTAB

In the last month, there has been a flurry of activity at the PTAB related to challenges from biosimilar manufacturers related to ustekinumab, aflibercept, and eculizumab patents. 1. STELARA® (ustekinumab) Four months after Janssen Biotech, Inc. settled to terminate Samsung Bioepis Co., Ltd.’s inter partes review (IPR) challenge of U.S….

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FDA Approves First Cell-Based Therapies for Treatment of Sickle Cell Disease

On December 8, 2023, the FDA approved the first cell-based gene therapies for the treatment of sickle cell disease (SCD) in patients 12 years and older—Vertex’s CASGEVY and Bluebird’s LYFGENIA.  SCD is a group of inherited blood disorders affecting approximately 100,000 people in the U.S. and inducing a median life…

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