Innoscience (Suzhou) Technology Co., Ltd., a company focused on high-performance, cost-effective gallium-nitride-on-silicon (GaN-on-Si) chip manufacturing and power solutions, announced a decisive victory in a patent infringement dispute initiated by Efficient Power Conversion Corporation (EPC). On March 18, 2025, the United States Patent and Trademark Office (USPTO) issued a final ruling declaring all claims of EPC¡¯s US¡¯294 patent invalid and subject to cancellation. This decision nullifies the basis of EPC¡¯s allegations against Innoscience, marking a complete victory for Innoscience in a two-year patent dispute.
Background of the Dispute
In May 2023, EPC filed a patent infringement investigation against Innoscience at the U.S. International Trade Commission (ITC), alleging that Innoscience infringed the US¡¯294 patent and three other U.S. patents. EPC later withdrew two of these patents. The ITC ruled that the third patent was not infringed. For the US¡¯294 patent, the ITC found some claims valid and infringed.
Innoscience contested the ITC¡¯s ruling on the US¡¯294 patent¡¯s validity and infringement, filing an appeal with the U.S. Court of Appeals for the Federal Circuit on January 31, 2025, arguing that the ITC¡¯s decision was erroneous and should be overturned.
USPTO Ruling and Implications
The USPTO¡¯s final decision to invalidate all claims of the US¡¯294 patent confirms errors in the ITC¡¯s prior ruling and establishes that EPC¡¯s allegations against Innoscience lacked merit. The USPTO determined that the US¡¯294 patent¡¯s claims were invalid, as they merely replicated widely used, existing technologies in the gallium nitride (GaN) field.
This invalidation ruling secures Innoscience¡¯s victory in the patent dispute with EPC. With the legal conflict resolved, Innoscience plans to focus on developing and delivering advanced GaN-based power solutions for global customers, contributing to energy-efficient technologies.
