(November 16, 2021, 11:37 AM EST) -- ALEXANDRIA, Va. — In a Nov. 15 petition for inter partes review (IPR) filed with the Patent Trial and Appeal Board, the maker of the popular game “Fortnite” asserts that it was “well known” that users of computer-implemented communication systems could “use different devices (including mobile telephones) to communicate using voice, text, and images” and that blocking and privacy features often accompanied those systems....