First Solar Shifts Strategy in US TOPCon Patent Battle
First Solar is preparing to change course in its ongoing solar patent dispute, with the US-based thin-film solar manufacturer planning to withdraw its Section 337 complaint under the Tariff Act of 1930. Instead, the company is expected to resume patent lawsuits against competing solar manufacturers, keeping pressure on rivals in the rapidly growing TOPCon solar cell market.
The move does not signal a retreat from the broader patent fight. Rather, market watchers believe First Solar is adjusting its legal strategy to pursue a potentially more effective path through traditional patent litigation. The company remains one of the most influential players in the US solar manufacturing sector, and its intellectual property claims could have major implications for solar panel suppliers, importers, and clean energy developers.
TOPCon, short for tunnel oxide passivated contact, has become one of the most important technologies in the global solar industry. The technology is widely used in high-efficiency solar cells and has gained strong momentum as manufacturers look to improve panel performance while lowering energy costs. As demand for TOPCon modules rises, disputes over related patents are becoming increasingly important.
First Solar is best known for its cadmium telluride thin-film solar technology, which differs from the crystalline silicon products commonly associated with TOPCon. Even so, the company’s patent position has drawn close attention because any successful legal action could affect competitors selling TOPCon-based products in the US market.
By withdrawing the Section 337 complaint, First Solar may be moving away from a trade-based enforcement route and toward direct patent lawsuits. Section 337 cases are typically used to challenge unfair trade practices involving imported goods, and they can result in import bans if successful. Patent lawsuits, however, can target alleged infringement through the courts and may lead to damages, settlements, or licensing agreements.
Industry observers say First Solar still has considerable leverage. The US solar market is highly competitive, and uncertainty around patent enforcement can influence purchasing decisions, supply chains, and module availability. Companies accused of infringement may face legal costs, commercial disruption, or pressure to negotiate.
The timing is also significant. The United States is working to strengthen domestic solar manufacturing while reducing reliance on imported components. Legal battles involving key solar technologies could shape which companies gain an advantage as the clean energy market expands.
For solar developers and buyers, the situation is worth monitoring. Patent disputes can affect pricing, product availability, and long-term supplier relationships. While First Solar’s latest move changes the legal venue, it does not end the conflict. Instead, it suggests the TOPCon patent battle in the US may be entering a new and potentially more intense phase.
As solar technology continues to evolve, intellectual property is becoming a powerful factor in the competition for market share. First Solar’s decision to shift its approach shows that patent protection remains a central issue in the future of high-efficiency solar manufacturing.
