The ITC committee upheld its preliminary ruling of December 2025, confirming that Innoscience infringed on one of Infineon's gallium nitride (GaN) technologies and ordering an import and sales ban on Innoscience. However, the ITC's final ruling and related bans will not take effect until after a 60-day review period by the U.S. President.
Infineon's 300mm GaN technology
In addition to the ruling in the U.S. market, Infineon and Innoscience are also involved in litigation in Germany: Infineon has filed a lawsuit in the First Regional Court of Munich (Landgericht München I) regarding infringement of three patents and one utility model. Back in August 2024, the court ruled that Innoscience infringed on the first patent alleged by Infineon, and hearings for the other one patent and one utility model are scheduled for June 2026.
In response to the ITC ruling, Johannes Schoiswohl, Vice President and Head of the GaN Systems Business Line at Infineon Technologies, stated that the ruling confirms Infineon's strong foundation in intellectual property and demonstrates its determination to defend its portfolio and maintain fair market competition. He also mentioned that Infineon's 300mm GaN manufacturing capabilities can play a role in scaling innovation and providing customers with related product advantages.
Innoscience's Counterattack
However, back on January 16, 2025, Innoscience and its wholly-owned subsidiary, Innoscience (Suzhou) Semiconductor Co., Ltd., filed a lawsuit in the Suzhou Intermediate People's Court of Jiangsu Province, China, accusing Infineon Technologies (China) Co., Ltd., Infineon Technologies (Wuxi) Co., Ltd., and Suzhou Xinwoke Electronics Technology Co., Ltd. of infringing on two of its patents. The amount involved and the legal impact have attracted industry attention.
The two patents involved in this lawsuit are patent numbers 202311774650.7 and 202211387983.X. Both of these are related to gallium nitride (GaN) power devices and their fabrication methods, representing significant technological achievements of Innoscience in the field of gallium nitride.
Infineon subsequently raised an objection regarding jurisdiction, arguing that the cases should be heard by another court, but the Suzhou Intermediate People's Court rejected its request in the first instance. Infineon appealed to the People's Court, which, after review, determined that Xinwo Technology Co., Ltd., as a qualified defendant in the two Suzhou cases, was located in Suzhou City, Jiangsu Province, falling under the jurisdiction of the first-instance court. Therefore, the first-instance court had jurisdiction. Based on this, on May 11, 2025, the People's Court rejected Infineon's appeal and upheld the first-instance ruling on the jurisdictional objection in both cases.
According to the Civil Procedure Law and relevant judicial interpretations, objections to jurisdiction must be raised within the response period. The court reviews the objections and decides whether to reject or transfer the case. The court's final ruling concludes the jurisdictional proceedings in this case.
On April 24th of this year, Innoscience announced that it had received two favorable administrative lawsuit judgments from the Beijing Intellectual Property Court. The court upheld the validity of Innoscience's two core gallium nitride (GaN) technology inventions and rejected Infineon's invalidation claims. Innoscience achieved another significant victory in these two key administrative lawsuits.
In response to today's events, Innoscience announced on its official Weibo account that the ITC issued a final ruling in Investigation No. 337TA1414, confirming that Innoscience's current GaN power device products do not infringe on Infineon's related patents and can continue to be imported and sold in the United States without restriction.
The original text is as follows:
The ITC Commission unanimously agreed that Innoscience's existing products do not infringe on Infineon's U.S. Patent Nos. 9,070,755 (related to electrode design) and 9,899,481 (related to packaging design).
The Commission only found two claims in Patent No. 9,899,481 valid and that they were infringed only by Innoscience's historical products, which have long been discontinued. Therefore, the relevant import and sales bans have no material impact on Innoscience's existing operations in the United States. Innoscience will continue to supply its existing GaN power products to customers in the United States and globally without interruption.
The ITC's final ruling affirms that Innoscience's products stem from independent technological innovation and completely thwarts Infineon's attempt to restrict legitimate competition through unfounded litigation. The future of the power semiconductor industry should be shaped by superior products, not baseless legal maneuvering.
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