First Solar Files Patent Infringement Lawsuit Against JA Solar Over TOPCon Tech

Key Facts

1First Solar filed a lawsuit against JA Solar and American Panel Solutions alleging infringement of US Patent No. 9,130,074.

2The disputed patent covers methods of manufacturing Tunnel Oxide Passivated Contact (TOPCon) solar cells.

First Solar filed a lawsuit against JA Solar and American Panel Solutions alleging infringement of US Patent No. 9,130,074. Business Wire reported that the disputed patent covers specific methods of manufacturing Tunnel Oxide Passivated Contact (TOPCon) solar cells.

The legal action represents an effort by the company to protect its intellectual property rights regarding advanced manufacturing processes used within the solar industry. Regarding market performance, First Solar (FSLR) closed at $175.16 on September 30, 2026, having traded between a day high of $178.68 and a low of $174.83 during that session.