The U.S. International Trade Commission (USITC) has received two Section 337 complaints from Trina Solar relating to alleged TOPCon patent infringement. The proceedings target Runergy, Adani, and CSI Solar and are based on claims drawn from US Patent Nos. 9,722,104 and 10,230,009. The investigations were formally launched in November and December 2024 and were consolidated on January 21, 2025. In later proceedings, the patent claims were revised, Mundra Solar PV Ltd. was added as a respondent, and the final target date was extended to August 18, 2026. An administrative ruling granting termination was issued under Order No. 40 on January 15, 2026, followed by the Commission’s decision not to review the termination order, on February 10, 2026.