Maxsence, a Chinese Fabless Manufacturer, Successfully Invalidates Murata's RF Filter Patent in Japan

Maxsence, a Chinese fabless manufacturer, has invalidated Murata's RF filter patent in South Korea, marking a strategic victory in their ongoing patent dispute. The ruling, issued by the Patent Trial and Appeal Board, declared claims 1-3 and 5-11 of Murata's 'Elastic Wave Device, High-Frequency Front-End Circuit, and Communication Device' patent (registration number 2142866) invalid. This decision could influence the ongoing litigation in South Korea's Seoul Central District Court, where Murata alleges patent infringement by Maxsence. The dispute extends to China and Germany, with Maxsence challenging Murata's patents in multiple jurisdictions. RF front-end modules, critical for smartphone antennas, are a key battleground in this technological rivalry.