First Solar files TOPCon patent infringement lawsuit against JA Solar and American Panel Solutions

First Solar filed a lawsuit in U.S. district court against JA Solar and American Panel Solutions alleging infringement of U.S. Patent No. 9,130,074, which covers methods of manufacturing TOPCon silicon solar cells. First Solar said it is also pursuing TOPCon patent lawsuits against Canadian Solar, Jinko Solar, T1 Energy and Trina Solar, and it voluntarily terminated a Section 337 investigation at the International Trade Commission last month in favor of patent infringement lawsuits.