⚡ Quick Read
The global solar manufacturing landscape is facing heightened legal scrutiny as First Solar, a prominent U.S.-based solar technology leader, has officially filed a lawsuit against JA Solar and American Panel Solutions (AMPS). The litigation, initiated in the U.S. District Court for the District of Delaware on October 5, 2026, centers on allegations of unauthorized use of patented technology related to tunnel oxide passivated contact (TOPCon) crystalline silicon solar cells. This move follows First Solar’s strategic decision to withdraw its Section 337 patent complaint before the U.S. International Trade Commission in favor of pursuing the matter through federal district court.
The core of the dispute involves U.S. Patent No. 9,130,074, which covers specific manufacturing methods for TOPCon cells. First Solar acquired this intellectual property portfolio through its 2013 acquisition of TetraSun. The company asserts that its patent portfolio is robust, with valid patents extending through 2030 and beyond across multiple jurisdictions, including Australia, Canada, China, the European Union, Japan, and Vietnam. The lawsuit names several JA Solar entities, specifically JA Solar Technology, JA Solar International, JA Solar Vietnam, and JA Solar Industrial, alongside AMPS.
This legal action is not an isolated incident. First Solar has been aggressively defending its IP, having previously filed a lawsuit against Shanghai-headquartered JinkoSolar last year regarding similar TOPCon module infringement claims. In July 2024, the company confirmed it had initiated investigations into several crystalline silicon manufacturers to protect its proprietary technology.
For Indian EPC contractors and solar developers, this legal battle introduces a layer of uncertainty regarding module supply chains. As the Indian market transitions rapidly toward high-efficiency TOPCon modules to meet ambitious renewable energy targets, any disruption in the supply of these components from major manufacturers like JA Solar could lead to project delays or cost escalations. Procurement professionals must monitor these legal developments closely, as they may influence the availability of specific module brands or necessitate a shift toward alternative technology providers to mitigate supply chain risks.
The court proceedings in Delaware will be closely watched by the global solar industry. If the court rules in favor of First Solar, it could lead to significant shifts in the competitive landscape, potentially impacting module pricing and the adoption of TOPCon technology in global markets. Within the context of the India renewable energy sector, where developers are under constant pressure to optimize costs and efficiency, the stability of the module supply chain remains a critical factor for the successful commissioning of large-scale solar projects.
Aditya Pathre is the Founder of MVApulse and covers India’s renewable energy sector, including solar, wind, battery energy storage systems (BESS), green hydrogen, transmission infrastructure, renewable energy policy and competitive bidding. His reporting focuses on project developments, market trends, government policies and energy transition across India.
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