March 19, 2024
The Federal Circuit on Tuesday backed a Patent Trial and Appeal Board decision that found many claims in a Sisvel patent on improving the efficiency of LTE wireless networks for cellphones were invalid as obvious.
June 29, 2022
The Patent Trial and Appeal Board appeared to struggle during a hearing Wednesday with arguments from both TCT Mobile and European patent-licensing company Sisvel in a fight over whether the latter's wireless communication system patent is invalid as obvious.