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Split PTAB Denies Pfizer's Challenge To Rituxan Patent

By Dorothy Atkins ( November 15, 2017, 4:11 PM EST) -- A split U.S. Patent Trial and Appeal Board panel has denied Pfizer Inc.'s request for an inter partes review of a Biogen Inc. patent covering a treatment for Hodgkin's lymphoma, finding that the drugmaker hasn't shown it could likely prove that the treatment is obvious due to prior art....

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