Stratasys Wins $27.6M in Patent Case Against Bambu Lab; Bambu Challenges Verdict – 3DPrint.com

Update, September 21, 2026: This article has been updated with a statement from Bambu Lab responding to the verdict, along with additional information about the company’s ongoing patent challenges against Stratasys in the U.S. and Europe.

Stratasys won a $27.6 million jury verdict against Bambu Lab in one of the 3D printing industry’s biggest patent fights. A federal jury in Texas found that four Bambu Lab-related companies infringed four Stratasys patents. The jury also rejected Bambu Lab’s argument that the four patents should not be considered valid. The verdict came on September 17 after a week-long trial in the U.S. District Court for the Eastern District of Texas. The $27.6 million award covers past damages.

Bloomberg Law also reported that the jury found Bambu Lab’s infringement “willful,” meaning it was not accidental.

The case was brought against four companies connected to Bambu Lab: Shenzhen Tuozhu Technology, Shanghai Lunkuo Technology, Tuozhu Technology, and Bambulab Limited. Together, they make and sell products under the Bambu Lab brand.

Airflow visualization inside the Bambu Lab P2S shows the printer’s new Active Airflow system. Image courtesy of Bambu Lab.

The case is part of a much larger patent battle between Stratasys and Bambu Lab that began in August 2024. At the time, Stratasys filed two separate lawsuits against Bambu Lab and related companies in Texas, accusing the fast-growing 3D printer maker of using technologies covered by Stratasys patents.

This first trial involved four U.S. patents: Nos. 9,168,698; 10,556,381; 9,421,713, and 7,555,357. However, the jury found that Bambu infringed all four patents and rejected its arguments that the patents were invalid.

Bambu Lab has also challenged Stratasys patents through the U.S. Patent and Trademark Office. In June, Bambu Lab won part of a separate patent challenge against Stratasys, while Stratasys won another. One of the patents Stratasys successfully defended, No. 9,421,713, is also part of this case.

“Stratasys remains focused on delivering cutting-edge technologies to customers and protecting the intellectual property that underpins our innovation,” the company said in a statement sent to 3DPrint.com following the verdict.

A Fight Between Two Very Different 3D Printing Players

The dispute puts one of the oldest companies in the 3D printing industry against one of its fastest-growing newer competitors. Stratasys has been developing and selling 3D printing technology for decades and holds a large portfolio of patents.

Meanwhile, Bambu Lab entered the desktop 3D printing market much more recently but has quickly become a major player. Its fast growth has made it a major competitor in the desktop 3D printing market, which probably makes this case about more than $27.6 million.

At its core, the dispute is about who owns some of the technology used in today’s desktop 3D printers. For Stratasys, the verdict is a super important first win. But the legal fight is not over. This was only the first of two patent cases Stratasys has against Bambu Lab in the same federal court. According to Stratasys, the second case does not yet have a trial date.

Bambu Lab Responds to Verdict

Update, September 21, 2026: Bambu Lab has responded to the verdict, saying it disagrees with the jury’s decision and plans to continue challenging the outcome.

“We appreciate the time and effort of the jury in considering this matter. While we respect the judicial process, we disagree with the verdict reached in this case. The law provides Bambu with the right to seek post-trial review and to appeal, and Bambu intends to avail itself of these legal processes,” the company said in a statement sent to 3DPrint.com.

Bambu Lab also pointed to several other proceedings in its broader patent dispute with Stratasys. In Europe, Bambu said the Unified Patent Court’s Hague Local Division rejected Stratasys’s request for a preliminary injunction in April 2026 after finding that Bambu did not infringe European patent EP2964450. That patent belongs to the same patent family as U.S. Patent No. 9,421,713, the purge tower patent involved in the Texas trial. According to Bambu, Stratasys did not appeal the decision, while invalidation proceedings brought by Bambu against the European patent are still underway.

The company also provided more detail about the U.S. patent challenges mentioned earlier in this article. According to the company, the U.S. Patent Trial and Appeal Board (PTAB) found challenged claims of U.S. Patent No. 9,592,660 invalid, and Stratasys did not appeal the decision. The PTAB also found challenged claims of U.S. Patent No. 8,562,324 invalid and later rejected Stratasys’s request for Director Review. According to Bambu, the window for Stratasys to appeal that decision remains open.

The outcome was different for U.S. Patent No. 9,421,713, which was involved in the $27.6 million verdict. The PTAB upheld the challenged claims of that patent, and Bambu has appealed the decision to the U.S. Court of Appeals for the Federal Circuit.

Bambu intends to challenge the Texas verdict, while separate patent proceedings involving the two companies remain ongoing in the U.S. and Europe.

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