On March 27, 2024, the PTAB summarily denied Seagen’s February 14, 2024 request for Director Review of the PTAB’s January 16, 2024 Final Written Decision (“FWD”) in PGR2021-00030 related to Adcetris® (brentuximab vedotin).  In the FWD, the PTAB held that the antibody-drug conjugate claims in U.S. Patent No. 10,808,039 were unpatentable.  See Seagen Requests Director Review of Unpatentability Decision in Adcetris® Patent PGRsee also PTAB Issues Final Written Decision Finding Seagen’s Adcetris® Patent Claims Unpatentable.

We continue to monitor this case and will provide updates as they become available. For more information about this and other biosimilar patent disputes, visit BiologicsHQ.



The authors would like to thank April Breyer Menon for her contributions to this article.


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