El Segundo, CA – August 2025 – Efficient Power Conversion Corporation (EPC) today announced that the Beijing IP Court has denied the appeal filed by Innoscience (Suzhou) Technology Co., Ltd. (Innoscience), thereby reaffirming the validity of EPC’s Chinese Patent No. ZL201080015425.X, titled “Compensated gate MISFET and method for fabricating the same” (the Compensated Gate Patent). This latest decision by the Beijing IP Court further strengthens EPC’s valuable intellectual property portfolio and reinforces its position as a pioneer in enhancement-mode GaN semiconductor devices.
Two of EPC’s patents covering enhancement-mode GaN field effect transistors (FETs) and their fabrication had been challenged by Innoscience (Suzhou) in China. The China National Intellectual Property Administration (CNIPA) had previously validated both patents in April and May 2024, but Innoscience requested reconsideration of the decision concerning the Compensated Gate Patent in (case number: (2024）京73 行初15061 号 ((2004) Jing73XingChu NO.15061)).
“EPC’s innovations in GaN power devices reflect nearly 20 years of research and development,” said Alex Lidow, CEO and Co-founder of EPC. “We welcome the Beijing IP Court’s decision as confirmation of the strength of our intellectual property.”
Notably, EPC continues to benefit from a decision by the U.S. International Trade Commission, which ruled that Innoscience infringed EPC’s intellectual property. That ruling, which remains in full force and effect, led to an exclusion order barring the importation of infringing Innoscience products into the United States.
EPC’s GaN power transistors deliver superior efficiency, faster switching speeds, and smaller footprints compared to legacy silicon devices. The validated patents are widely regarded as critical to the structure and performance of modern enhancement-mode GaN FETs, in which power next-generation systems across AI servers, e-mobility, robotics, rapid charging, and autonomous platforms.
About EPC
EPC is the leader in enhancement mode gallium nitride (eGaN®) based power management. eGaN FETs and integrated circuits provide performance many times greater than the best silicon power MOSFETs in applications such as DC-DC converters, remote sensing technology (lidar), motor drives for eMobility, robotics, and drones, and low-cost satellites.
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Press contact: Efficient Power Conversion: Renee Yawger tel: +1.908.619.9678 email: [email protected]