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Fed. Circ. Flips DuPont PTAB Loss, Axes Chemical Patent

By Ryan Davis (September 17, 2018, 6:18 PM EDT) -- The Federal Circuit on Monday reversed a Patent Trial and Appeal Board ruling that DuPont didn't prove a rival's chemical patent was invalid, saying that since the claimed method overlapped with earlier techniques, the PTAB should have put the burden on the patent owner to show it was not obvious....

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