Stratasys wins $27.6 million verdict against Bambu Lab over four FDM patents
A federal jury in the Eastern District of Texas, Marshall Division, handed Stratasys a $27.6 million verdict against Bambu Lab on September 17, 2026, after a week-long trial. The jury found four Bambu Lab-related entities, Shenzhen Tuozhu Technology, Shanghai Lunkuo Technology, Tuozhu Technology, and Bambulab Limited, had infringed four Stratasys patents, rejected Bambu’s argument that the patents were invalid, and found the infringement willful.
The $27.6 million covers past damages only. Stratasys hasn’t said how the figure splits across the four patents or the four defendant entities, and its public statement gave no indication of whether it will now seek an injunction against Bambu Lab’s products.
The four patents at trial were narrower than the original complaint. Stratasys sued Bambu Lab in August 2024 over ten patents, split across two lawsuits. Only four made it to this jury:
- US 9,421,713, the purge-tower patent, covering printing material into a separate tower during head or line changes
- US 7,555,357, covering extrusion paths that fill small voids within printed layers
- US 9,168,698 and US 10,556,381, a related pair covering force detection at the extruder or tool head, including build-plate contact and deflection errors
A fifth patent from the original complaint, US 9,592,660, covering heated build platforms, never reached the jury. The Patent Trial and Appeal Board had already found its challenged claims unpatentable, and Stratasys chose not to appeal that finding, so it’s now final.
The purge-tower patent is the one to watch. The PTAB separately upheld its validity in June, rejecting a Bambu Lab challenge, and Bambu has now appealed that PTAB decision to the Federal Circuit. Meanwhile in Europe, the Hague Local Division of the Unified Patent Court dismissed a Stratasys bid for a preliminary injunction against Bambu Lab’s H2C printer in April 2026, ruling at the preliminary stage that the H2C didn’t fall within the scope of the European counterpart patent, EP2964450. Stratasys didn’t appeal that ruling; Bambu is separately trying to invalidate the European patent outright. Same patent family, opposite early scorecards on two continents, none of it final.
Bambu Lab isn’t done in the US either. It has said it will pursue post-trial review and appeal the Texas verdict. And this was only the first of two Stratasys v. Bambu Lab cases in the same Texas court, covering the other six patents from the original 2024 filing. No trial date has been set for that second case.
What the verdict doesn’t settle: whether Bambu Lab has to change any current product, pay ongoing royalties, or stop selling anything. A jury award of past damages is not an injunction, and Stratasys’s own statement after the win stopped short of saying it would ask for one.