Entegris says Taiwan, China uphold validity of CMP slurry patents
ENTG•Patent validity rulings in Taiwan and China
Entegris says Taiwan and China have upheld the validity of its acidic colloidal silica CMP slurry technology patents.
- Taiwan IP and Commercial Court upheld Taiwan Patent No. I561622 on July 14, 2026.
- China’s National Intellectual Property Administration upheld Chinese Patent No. 107075343B on Aug. 10, 2026.
- The rulings reinforce a patent family tied to a 2021 U.S. ITC import ban on Qnity’s Optiplane CMP slurries.
- ITC exclusion and cease-and-desist orders remain in force until 2035 following a 2024 U.S. litigation resolution.
