Fed. Circ. Erases $41.8M Verdict Over Seagen Cancer Drug IP

By Adam Lidgett ( December 2, 2025, 4:53 PM EST) -- The Federal Circuit in a precedential opinion Tuesday reversed a $41.8 million verdict against Daiichi Sankyo for infringing a Seagen breast cancer treatment patent, saying a lower court should have found that the patent didn't adequately describe the claimed invention or enable a skilled person to use it....

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