Welcome to the Big Molecule Watch!

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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.

Year in Review: Top Legal Developments of 2023

As we settle into 2024, we reflect on the significant legal developments of 2023 that hold potential impact on the biologics and biosimilars market.  The following is a recap of some of the top five legal decisions and developments in the biosimilars and biologics space in 2023 that we covered…

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PTAB Issues Final Written Decisions Finding Claims of Aflibercept-related Patents Invalid

On January 9, 2024, the PTAB issued final written decisions in IPR2022-01225 and IPR2022-01226, filed by Mylan on two Regeneron patents directed to dosing of aflibercept — U.S. Patent Nos. 10,130,681 and 10,888,601.  The PTAB ruled that all challenged claims of the ’681 patent (claims 1, 3-11, 13, 14, 16-24,…

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Alvotech and STADA obtain approval in Europe for ustekinumab biosimilar, UZPRUVO

On January 10, Alvotech announced that the European Commission (EC) issued a marketing authorization to its European commercialization partner, STADA, for UZPRUVO (AVT04), a biosimilar referencing STELARA (ustekinumab). The authorization covers all European Economic Area countries, as well as Iceland, Liechtenstein, and Norway. UZPRUVO is the first ustekinumab biosimilar to…

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Alexion Sues Samsung over Proposed Eculizumab Biosimilar

Alexion Pharmaceuticals, Inc. and Alexion Pharma International Operations Ltd. (collectively, “Alexion”) filed a complaint on January 3, 2024, against Samsung Bioepis Co. Ltd. (“Samsung”) in the U.S. District Court for the District of Delaware, alleging infringement of 6 patents under the BPCIA based on Samsung’s submission of an aBLA for…

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Ustekinumab Antitrust Litigation

On December 7, 2023, a group of health insurers and health insurance administrators filed a class action complaint against Johnson & Johnson and Janssen Biotech, Inc. (collectively “J&J”) in the Eastern District of Virginia alleging that J&J “is unlawfully delaying the introduction of biosimilar competition for ustekinumab.”  The class action…

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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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