Inside The PTAB's Seagen Cancer Drug Patent Decision

By Ryan Hagglund (February 23, 2024, 6:20 PM EST) -- The latest chapter in the complex and multifaceted Daiichi Sankyo Inc. v. Seagen Inc.[1] patent dispute — concerning antibody-drug conjugate technology, or ADC, and pitting Seagen against Daiichi and its collaborator, AstraZeneca — concluded recently. On Jan. 16, the Patent Trial and Appeal Board issued a final written decision in a post grant review proceeding, finding all challenged claims of Seagen's U.S. Patent No. 10,808,039 invalid....

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