China's supreme court bans Infineon from selling GaN power chips in China

China's Supreme People's Court upheld a ban on Infineon's sale of disputed gallium nitride (GaN) power chips in mainland China, concluding a multi-jurisdictional patent dispute initiated by Suzhou-bas... Read original →

The Supreme People’s Court ban on Infineon’s GaN power chips is not merely a patent verdict—it signals China’s strategic push to control critical AI infrastructure components. With 800V architectures becoming standard in high-density AI racks, secure GaN-on-silicon supply chains are now mission-critical for NVIDIA and hyperscalers. The ruling accelerates adoption of domestic alternatives like CR Micro and Silan, though their 300mm yield and high-frequency reliability lag. Infineon’s global IP strength can’t offset lost China revenue, undermining its advanced packaging integration roadmap. Innoscience’s 29.9% market share gains credibility but invites SEP scrutiny and ITC counterclaims. Over the next 12–24 months, expect China to formalize GaN standard-essential patent frameworks and co-validate domestic epitaxy with EUV tools, aiming for a vertically integrated power semiconductor ecosystem.