It seems I had swapped Tengen and Accolade in my memory. I am thinking of Sega v. Accolade. The Ninth Circuit reversed the district court's order and ruled th

It seems I had swapped Tengen and Accolade in my memory. I am thinking of Sega v. Accolade. The Ninth Circuit reversed the district court's order and ruled that Accolade's use of reverse engineering to publish Genesis titles was protected under fair use, and that its alleged violation of Sega trademarks was the fault of Sega. https://en.m.wikipedia.org/wiki/Sega_v._Accolade https://en.m.wikipedia.org/wiki/Sega_v._Accolade