Tesla ‘Sun factory’ apparently at heart of U.S.-Chinese semiconductor technology patent infringement dispute 

Context:

• New York-based Linton Crystal Technologies is a leading manufacturer of equipment for producing monocrystalline silicon ingots, including Czochralski (CZ) growers, diamond wire saws, polishing equipment, and turnkey factory solutions for the semiconductor and photovoltaic industries. China’s Zhejiang Jingsheng Mechanical & Electrical Co. (JSG) also manufactures equipment for the semiconductor and photovoltaic industries, making them direct competitors.
• According to Chinese media reports, Tesla held a tender for the supply of 210mm monocrystalline pullers, wafer cutting equipment, and quartz crucibles that closed in February. Jingsheng reportedly took the puller portion. Contracts were awarded and signed in March, and full delivery was planned for Q3 2026. And, in August, Tesla filed for a $10.1 billion “Project Crystal Sun” factory in Fort Bend County covering everything from ingot growth to finished modules, with production planned for early 2029.

What’s new: Linton has sued JSG for the alleged infringement of two of its patents related to seed-lifting technologies that improve the lifting and rotation of seeds during the CZ crystal growth process in the United States District Court for the Eastern District of Texas, Marshall Division (full complaint below box). The plaintiff, which states that JSG’s infringement causes and “threatens concrete competitive harm” to Linton, is seeking damages and injunctive relief.

Direct impact: The complaint describes a “large-scale photovoltaic manufacturing project in Texas” and notes that public reports identify JSG as a supplier of monocrystalline crystal-growth pullers and associated equipment for this specific project. While Tesla remains unnamed in the complaint, the suit is apparently pointing at the company’s “Project Crystal Sun” factory, and has the potential to create barriers in the future for the car company’s ambitious manufacturing base.

Wider ramifications: This adds to the rising number of patent disputes in the solar energy technology market, including involving panels and power infrastructure (December 16, 2025 ip fray article). Most recently, China’s BYD filed a complaint for declaratory judgment (DJ) against First Solar in the Northern District of California (September 22, 2026 ip fray article), and Nextpower – a provider of solar tracking technology, as well as software and hardware for distributed solar energy plants – and GameChange Energy subsidiary GameChange Solar are now embroiled in infringement litigation in the District of Delaware, too (September 9, 2026 ip fray article). Meanwhile, earlier this year – and given all the litigation in this space – China announced its first-ever patent pool, focusing on TOPCon cell and module technologies (April 27, 2026 ip fray article).