Tesla’s solar factory dragged into patent war between Chinese suppliers

Tesla’s planned solar factory in Texas has landed in the middle of a US patent lawsuit between two Chinese solar equipment makers, both chasing the ingot-growing furnaces Tesla needs to hit its 100 GW goal. Linton Crystal Technologies, a Rochester, New York company wholly owned by China’s Dalian Linton, sued Zhejiang Jingsheng in a Texas federal court last week. Chinese industry reports say Jingsheng won a roughly 3 billion yuan (about $420 million) Tesla order for crystal pullers earlier this year. Two patents on how you lift a silicon seed The complaint was filed on September 22 in the US District Court for the Eastern District of Texas, Marshall Division, a venue patent plaintiffs have loved for years. Linton is asserting two US patents, No. 11,255,024 and No. 11,814,746, both titled “Seed Lifting and Rotating System for Use in Crystal Growth.” They cover part of a Czochralski (CZ) puller, the furnace that slowly draws a monocrystalline silicon ingot out of molten silicon. According to the patent filing, Linton’s design swaps the usual lead screw for a roller guide riding in a helical groove on a drum to lift and rotate the seed. The first patent was granted in February 2022 and runs until 2040. Linton is asking for damages, treble damages for willful infringement, and a permanent injunction. That last one is the part that matters for Tesla. Jingsheng, which trades in Shenzhen and is valued at about 53 billion yuan, disclosed the suit to investors on September 24. It says its products use “technical solutions entirely different” from the patents, that it hasn’t been formally served, and that it expects no material impact on its business. Linton’s executive board member Todd Barnum framed it as a defense of American innovation, saying the company’s engineers “invested decades of effort to develop industry-leading crystal growth technology right here in Rochester, New York.” Linton does trace its roots in Rochester back to 1952. But its parent is listed on the Beijing Stock Exchange, so this is very much a fight between two Chinese companies, just held in a Texas courtroom, through American affiliate corps. Where Tesla fits in Tesla isn’t a party to the lawsuit, and neither Tesla nor Jingsheng has confirmed the order. But Chinese trade press has laid out a fairly detailed timeline: a Tesla tender for 210mm monocrystalline pullers, wafer cutting equipment, and quartz crucibles closed in February, contracts were signed in March, shipments started in April, and full delivery was planned for the third quarter. Jingsheng reportedly took the puller portion. Linton, a direct competitor in pullers, didn’t. That lines up with what we’ve been tracking. In March, Tesla was reportedly in talks to buy $2.9 billion worth of Chinese solar equipment for delivery before this fall. I 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. Ingot pulling is the very first step of that chain. No pullers, no wafers, no cells. Both suppliers are also hurting. Jingsheng’s revenue fell about 40% year-over-year in the first half of 2026, and Dalian Linton posted a small loss over the same period as China’s solar manufacturing glut crushed equipment orders. A US order of this size is a big deal for either of them. Electrek’s Take One Chinese industry expert quoted by the 21st Century Business Herald described it as the weaker player trading patents for negotiating leverage. Linton owns US patents through its Rochester subsidiary, Jingsheng apparently won the Tesla business, and the Eastern District of Texas is where you go when you want a defendant to feel pressure. We don’t think this derails anything by itself. Patent cases in Marshall take years, Jingsheng says its design is different, and an injunction against equipment that’s reportedly already shipping to Texas is a long shot. The likelier outcome is a settlement or a licensing deal. But it’s a good reminder of something that gets lost in the “American-made solar” pitch. Tesla wants 100 GW of US solar manufacturing by the end of 2028, a target that’s roughly 300 times its Buffalo output, and the only way to get anywhere near that is by buying the production lines from China. That means Tesla inherits China’s supply chain problems too: export approvals from Beijing, and now Chinese suppliers dragging each other into US courts over its orders. Tesla has promised a solar comeback before. This time it’s actually spending money on it, which we’ll give it credit for. The question is whether it can get the lines running on time when the equipment itself is caught in a fight between suppliers. 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