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.

Global Biosimilar Updates - Spring 2025

GLOBAL BIOSIMILAR UPDATES Celltrion Bolsters Biosimilars Market Position in Italy Celltrion’s ustekinumab biosimilar, STEQEYMA®, has won its first bid within 2 months of its launch in January of 2025.  Since launch, STEQEYMA® has secured contracts in four regions of Italy, including, Piemonte, Valle d’Aosta, Liguria, and Sardegna.  Combined, these contracts…

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Commercialization of Ustekinumab and Golimumab Biosimilars

This Monday, Bio-Thera Solutions and Dr. Reddy’s Laboratories SA announced that they had entered into commercialization and licensing agreements for proposed ustekinumab and golimumab biosimilars in Southeast Asia.  Bio-Thera will develop, manufacture, and supply BAT2206 (the proposed ustekinumab biosimilar referencing Janssen’s STELARA) and BAT2506 (the proposed golimumab biosimilar referencing Janssen’s…

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