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PTAB Revives Part Of Wirtgen Patent In Rare Rehearing

By Tiffany Hu (July 12, 2019, 7:22 PM EDT) -- In a rare move, the Patent Trial and Appeal Board has granted Wirtgen America Inc.'s request for a rehearing after the board invalidated the machine manufacturer's patent on a road milling machine, reviving some of the claims the second time around....

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