First Solar Sues JA Solar and American Panel Solutions Over TOPCon Patent
First Solar, Inc. said on October 1, 2026 that it has filed a lawsuit in the United States District Court for the District of Delaware against JA Solar Technology Co., Ltd., JA Solar International, Ltd., JA Solar Vietnam Co., Ltd., and JA Solar Industrial Corp., collectively JA Solar, together with American Panel Solutions LLC, alleging infringement of its US Patent No. 9,130,074. The '074 patent covers methods of manufacturing Tunnel Oxide Passivated Contact (TOPCon) crystalline silicon…