A jury in the Eastern District of Texas has found Bambu Lab liable for infringing Stratasys patents in its X1, P1 and A1 printers, and awarded $27.6 million in damages. The patents cover prime towers and bed levelling, two techniques used across most of the consumer 3D printing market.

No injunction was issued. Every machine named in the suit belongs to Bambu Lab's first generation, and the company says it will seek post-trial review and appeal. "While we respect the judicial process, we disagree with the verdict reached in this case," a representative told Tom's Hardware.

The printers in question are mostly already gone

Look at the product list and the verdict gets smaller. The X1, Bambu Lab's first printer, launched in May 2022 and was retired earlier this year. The P1S was nominally replaced by the P2S in October 2025. Only the A1 and A1 Mini remain in the active lineup, and a larger A2L arrived this summer.

More to the point, the current generation appears to be engineered around the problem. The first-generation machines use single-nozzle filament purging, covered by Stratasys patent US 9421713, plus specific strain-gauge and force-sensor implementations targeted by US 9168698. The newer H2 line and the X2 are dual-nozzle designs, which sidesteps the purging patent entirely, and they use optical sensors and reworked bed probing that avoid the force-detection feedback loops in the second one.

An anonymous source told Tom's Hardware that Bambu Lab has an alternative to prime towers in development in case it needs one. That has not been made public.

This is what a well-handled patent exposure looks like from the outside: pay damages on discontinued hardware, ship replacement designs before the verdict lands.

Stratasys did not win everything

The Texas judgement is one piece of a dispute Stratasys opened in 2024 with two civil suits covering ten patents. Bambu Lab has already taken chunks out of it.

The company invalidated US 9592660, which covered heated build surfaces and flexible spring steel plates, by arguing it was not a single invention but a combination of designs that appeared in prior art before Stratasys acquired Arevo and patented them. It also successfully defended its use of networked cloud printing with remote camera monitoring under US 8562324. Four patents are still awaiting judgement in Texas, covering RFID material tags, remote networking, LiDAR scanning and automatic printer detection, and the LiDAR claim applies only to the retired X1 Carbon.

Stratasys has roughly 2,600 3D printing patents going back to the 1980s. Co-founder Scott Crump's US5121329, filed in 1989, is the patent that defined fused deposition modelling, and its expiry in 2009 is the reason consumer 3D printing exists at all. A company built on that portfolio choosing to enforce it against the firm that took the low end of the market is not surprising. What is notable is that the enforcement works in only one jurisdiction.

In April, the European Unified Patent Court's Hague Local Division dismissed Stratasys's application for a preliminary injunction against Bambu Lab. The court rejected an attempt to broaden the claims, and Stratasys did not appeal.

So an X1 Carbon in New York infringes a prime tower patent, and the same machine in Germany does not. For a hardware company selling one global design, that is a genuine operational problem rather than a legal curiosity. It means US-market firmware and hardware revisions can diverge from what ships elsewhere, and it gives Bambu Lab a strong reason to make the dual-nozzle H2 approach the worldwide default even where the old method remains legal.

Venue is worth noting too. Stratasys filed in the Eastern District of Texas, not the Western District where Bambu Lab keeps its Austin offices. The Eastern District has a long reputation for favouring patent holders, and US District Judge Alan Albright was at one point hearing more than a quarter of the country's patent cases. Choosing that court was a decision, and it produced a result the European court declined to.

The competitive read

The most useful comment came from a rival. Tom's Hardware asked Prusa Research whether the dispute shaped the INDX, its multi-nozzle toolchanger that needs no prime or purge tower. The answer was that patents had nothing to do with it. "Our motivation was to have minimal waste," a Prusa representative said. "In our eyes, this is a better solution than a prime tower." The INDX primes its nozzles by wiping pellets no bigger than a grain of rice into an internal waste cup.

If that holds up, the technique at the centre of a $27.6 million verdict is already being replaced for ordinary engineering reasons. Patent fights in consumer hardware tend to resolve this way, with the disputed method obsolete by the time the damages are paid. Other corners of the industry are watching similar enforcement play out, from Denuvo pursuing an anonymous cracker over DRM bypasses to legislative attempts at forcing network operators to block infringing sites. The difference here is that the defendant shipped its way out first.