China's Supreme People's Court has upheld an injunction barring Infineon, the German semiconductor giant, from selling its disputed gallium nitride (GaN) power chips in mainland China, according to Tom's Hardware. The ruling hands a significant win to Innoscience, a Chinese chip maker that Tom's Hardware describes as a market leader in GaN power chips.
The decision is the latest development in what Tom's Hardware characterizes as a multi-region patent war between the two companies. By affirming the lower court's injunction at the highest judicial level, the ruling carries substantial weight — it is not a preliminary or regional measure but a definitive order from China's top court.
GaN chips are increasingly important in consumer electronics and industrial power systems because they can switch electricity far more efficiently than older silicon-based chips. They are found in fast-charging phone adapters, electric vehicle power systems, and data center equipment.
For Infineon, losing access to China's market — one of the largest consumer electronics and manufacturing hubs in the world — on one of its growth product lines is a material commercial setback. For Innoscience, the ruling removes a powerful foreign competitor from shelves in its home market and reinforces its patent position ahead of any further international litigation.
The case illustrates how patent courts are becoming a front line in the broader technology rivalry between Western chip makers and their Chinese counterparts.