Infineon's GaN power chips are now banned from mainland China after the Supreme People's Court upheld a lower‑court injunction.
The court confirmed that Infineon infringes patents held by domestic player Innoscience, forcing the German firm to cease sales of disputed GaN products in the Chinese market. The ruling applies nationwide and comes amid a broader multi‑region patent battle over the same technology.
The decision removes a key revenue stream for Infineon and gives Innoscience a clearer path to dominate GaN power solutions in China, a market that is rapidly adopting the high‑efficiency chips for data‑center and automotive uses. Competitors will watch closely, as the outcome could set a precedent for how foreign semiconductor firms navigate Chinese patent litigation.
For now, Infineon must find alternative markets or redesign its products to avoid further legal entanglements, while Innoscience can leverage the win to strengthen its position domestically and abroad.