Gallium nitride patent wars: Infineon’s products removed by authorities during Shanghai trade fair

Context:

• Since March 2024, Innoscience and Infineon have been embroiled in a multi-jurisdictional gallium nitride (GaN) patent infringement dispute across the U.S., Germany, and China. In the Chinese prong, local company Innoscience sued Infineon in the Suzhou Intermediate People’s Court over patent infringement, while Infineon challenged the patents’ validity and tried (May 7, 2026 ip fray article), unsuccessfully, to move the dispute away from Suzhou (December 4, 2025 ip fray article). The Suzhou court issued a preliminary injunction against Infineon in a first-instance judgment in May. Infineon appealed, but, a month later, the Supreme People’s Court (SPC) of China upheld the lower court’s decision (June 23, 2026 ip fray article). When the decisions were finally published, however, ip fray found that the top court had not handed Innoscience “a final victory”, as the company had claimed, but it upheld the Suzhou interim restraints.
• electronica Shanghai, Asia’s leading electronics trade fair, this year takes place from yesterday (July 1, 2026) to tomorrow (July 3, 2026). This year, several major international firms have shown up, including STMicroelectronics, ON Semiconductor, NXP, Infineon, and Texas Instruments. Domestic competitors such as SG Micro, Naxin Microelectronics, SmartSens, HiDiMicro, KaiWeite, and YunZhong Technology also exhibited products and made new launches.