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.

Adalimumab Biosimilar Wins NMPA Approval

Shanghai Junshi Biosciences Co. Ltd. and Mabwell Bioscience Co. Ltd. announced that the jointly developed adalimumab biosimilar injection (Junmaikang ®) was officially approved by the Chinese National Medical Products Administration (NMPA) for marketing authorization (drug approval number: Sinopharm S20220008). Junmaikang® is used for the treatment of rheumatoid arthritis, ankylosing spondylitis,…

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FDA Accepts Alvotech’s BLA Supporting Interchangeability for ATV02, a High Concentration, Citrate-Free Biosimilar Candidate for Humira®

Alvotech Holdings S.A. (“Alvotech”) announced on February 28th that the U.S. Food and Drug Administration (FDA) has accepted for review the company’s Biologics Licensing Application (BLA) for ATV02 (100 mg/mL) that includes new data supporting interchangeability between ATV02 and Humira. According to Alvotech’s press release, the data are from a…

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Switching Study Concludes That Transition From Humira To Samsung Bioepis’s Adalimumab Biosimilar Is Safe and Effective

Results of the PROPER study, an interim analysis assessing the safety and efficacy of switching from Abbvie’s Humira to Samsung Bioepsis’s biosimilar adalimumab product, SB5, were presented last week at the European Crohn’s and Colitis Organization’s annual meeting.  SB5 received EU marketing authorization in August 2017.  According to the presentation, the…

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PTAB Institutes Two More IPRs on Tocilizumab Patents Challenged by Fresenius

Earlier this week, the PTAB instituted inter partes review of two patents directed to methods of treating rheumatoid arthritis by subcutaneously administering tocilizumab and devices for subcutaneously administering tocilizumab, respectively.  Fresenius filed petitions for inter partes review of U.S. Patent Nos. 8,580,264 (“the ’264 patent”), owned by Chugai and Roche,…

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Biogen and Xbrane Enter into Worldwide Commercialization and License Agreement for Certolizumab Pegol Biosimilar

On February 7, 2022, Biogen Inc. and Xbrane Biopharma AB announced that they had entered into a commercialization and license agreement related to Xcimzane, a certolizumab pegol biosimilar referencing CIMZIA.  Under the agreement, Biogen will gain exclusive global regulatory, manufacturing, and commercial rights to Xcimzane, and Xbrane will be responsible…

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