• U.S. Customs & Border Protection clears Innoscience in Section 337 Investigation against EPC, allows U.S. importation of Innoscience GaN
• Innoscience’s new-generation GaN power semiconductors bearing an “AD” part number suffix confirmed free from Limited Exclusion Order

Suzhou, China, March 13^th, 2026 – Innoscience (HKEX:02577.HK) the world leader in 8-inch GaN-on-Si high-performance low-cost manufacturing, announced that the U.S. Customs and Border Protection (CBP) concluded an inter-parties proceeding between Innoscience and Efficient Power Conversion (EPC), confirming that Innoscience’s new-generation products are not subject to the Limited Exclusion Order (LEO) issued in the U.S. International Trade Commission (ITC) 337-TA-1366 ruling. This decisive action by the U.S. CBP clears the way for U.S. importation of Innoscience’s high-efficiency high power density GaN products, driving innovation for AI datacenters, Robotics, Solar micro-inverters, and EV power. The U.S. CBP ruling was dated February 20^th, 2026, and the public report is here: CBP Public Report.

As background, in May 2023 EPC launched a lawsuit against Innoscience claiming infringement on EPC’s U.S. patent No. 8,350,294 (US‘294) plus 3 other U.S. patents (4 total patents). During the subsequent investigation, EPC withdrew two patents and the U.S. ITC ruled the third patent was not infringed. Subsequently, the US PTO (Patent and Trademark Office) issued a Final Ruling invalidating all 12 Claims in the US’294 patent, showing EPC’s allegations against Innoscience to be baseless.

Importantly, the LEO now only applies to legacy GaN chips, and it never affected customers’ power supplies which had incorporated those legacy GaN chips, when PCBA manufacturing is completed outside the U.S. and then imported into the U.S.

At present, both the ITC’s ruling and the USPTO’s final decision on US’294 patent are on Appeal. The LEO will be permanently rescinded after the U.S. Court of Appeals reverses the ITC’s determination or affirms the USPTO’s invalidity decision.

To clarify: as of February 20^th, 2026, Innoscience may make, use, sell, offer for sale, and import its new-generation products directly into the U.S. without restriction. These new-generation products have an “AD” part number suffix.

Innoscience welcomes the U.S. CBP ruling as a positive development for both our customers and for the entire GaN industry. The ruling is further validation of the legal standing of Innoscience’s advanced technology, and it highlights Innoscience’s commitment to provide customers with reliable high-performance, low-cost GaN.

About Innoscience

Innoscience (HKEX:02577.HK) is the global leader in gallium nitride process innovation and power device manufacturing. Innoscience’s device design and performance set the worldwide standard for GaN. The company's gallium nitride products are used in multiple low, medium, and high voltage applications, with GaN process nodes covering 15V to 1200V. With over 800 patents granted or pending, Innoscience’s products are known for reliability, performance, and functionality within the fields of consumer electronics, automotive electronics, data centers, renewable energy and industrial power. Innoscience creates a bright future for GaN. Please visit www.innoscience.com for more information.