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.

Third Circuit Affirms Rejection of AstraZeneca’s Challenges to IRA Drug Price Negotiation Program

On May 8, 2025, the Court of Appeals for the Third Circuit affirmed the district court’s dismissal of AstraZeneca’s challenges to the Inflation Reduction Act’s Drug Price Negotiation Program and CMS’s Guidance implementing the Program.  AstraZeneca manufactures Farxiga, one of the drugs selected in the first round of drug price…

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EMA Issues Positive CHMP Opinions for Biocon’s Denosumab Biosimilars

Last week, Biocon Biologics Ltd (“BBL”) announced that the EMA’s Committee for Medicinal Products for Human Use (“CHMP”) had issued positive opinions for Biocon’s two denosumab biosimilar candidates. The two candidates, VEVZUO and Denosumab BBL (the brand name is currently under approval), are each intended for distinct therapeutic indications.  According…

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District of New Jersey Denies Preliminary Injunction in Ustekinumab Breach of Contract Case

On April 28, the U.S. District Court for the District of New Jersey denied Janssen Biotech, Inc. (“Janssen”) and Johnson & Johnson’s motion for a preliminary injunction seeking to enjoin Samsung Bioepis Co. Ltd. (“Samsung”) from launching a private label biosimilar of Janssen’s STELARA® (ustekinumab) in a breach of contract…

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