ARTFEED — Contemporary Art Intelligence

Chinese Chip Stocks Surge After Supreme Court Blocks Infineon in GaN Patent Case

economy-finance · 2026-06-15

The Supreme People's Court of China has upheld an injunction from a lower court that prohibits Infineon Technologies, the German semiconductor manufacturer, from marketing gallium nitride (GaN) products within mainland China. This decision, made on Friday, confirmed a ruling from May that found Infineon guilty of violating two essential GaN patents owned by its Chinese competitor, Innoscience. As a result, Infineon is required to halt all sales and imports of the infringing items in China and pay damages of 10 million yuan (US$1.47 million). Following the ruling, Chinese chip material stocks experienced a surge on Monday, with Innoscience's shares rising by 16.6%. Zhang Guobin, founder of eetrend.com, characterized the situation as a "system-level confrontation" in the third-generation semiconductor sector.

Key facts

  • China's Supreme People's Court upheld an injunction against Infineon Technologies on Friday.
  • The injunction bars Infineon from selling gallium nitride (GaN) products in mainland China.
  • The lower court found Infineon infringed two core GaN patents held by Innoscience.
  • Infineon was ordered to cease all Chinese sales and imports of infringing products and pay 10 million yuan (US$1.47 million) in damages.
  • Innoscience's Hong Kong-listed stock surged 16.6% on Monday.
  • Silan Microelectronics and Sanan Optoelectronics both surged by the 10% daily limit.
  • China Resources Microelectronics jumped over 13%.
  • Zhang Guobin called the dispute a 'system-level confrontation' over third-generation semiconductor dominance.

Entities

Institutions

  • China's Supreme People's Court
  • Infineon Technologies
  • Innoscience
  • Silan Microelectronics
  • Sanan Optoelectronics
  • China Resources Microelectronics
  • eetrend.com

Locations

  • China
  • mainland China
  • Hong Kong
  • Shanghai

Sources