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PTAB Won't Hear 2 Daiichi PGRs On Cancer Antibody IP

By Britain Eakin (June 25, 2021, 5:24 PM EDT) -- The Patent Trial and Appeal Board said it won't review a Seagen Inc. cancer drug delivery patent being challenged by Daiichi Sankyo Inc. and AstraZeneca, noting that the drugmakers offered few assurances that they won't pursue the same invalidity arguments in parallel district court litigation....

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