Nintendo Sued for Patent Infringement Over Use of System-on-a-Chips March 8, 2021 On Friday, plaintiff M-Red Inc. filed a complaint against defendant Nintendo in the Eastern District of Texas, alleging that the defendant infringed the patents-in-suit for utilizing infringing chips in its products. The patents-in-suit are United States Patent Nos. 6,853,259 (the ’259 patent); 7,068,557 (the ’557 patent); 7,209,401 (the ’401 patent); 6,177,843 (the ’843 patent); 6,628,171 (the ’171 patent); of which the first three are entitled “Ring oscillator dynamic adjustments for auto calibration,” the fourth is entitled “Oscillator circuit controlled by programmable logic,” and the last is entitled “Method, architecture and circuit for controlling and/or operating an oscillator.” The plaintiff stated that the ’259, ’557, and ’401 patents “generally describe integrated circuits comprising voltage and temperat(ur)e sensors which output a voltage and temperat(ur)e and store the output in memory.” According to M-Red, the patented “temperature monitoring and power saving techniques are incorporated into integrated circuits (‘ICs’) and software utilized in Nintendo Accused Products.” For instance, the plaintiff noted that this functionality is “included and utilized” in System-on-a-Chips (‘SoCs’) that are used in the Nintendo Accused Products, including the Nvidia and Broadcom SoCs, which “adjust a clock frequency based on variations in voltage and temperature.”