Stratasys and Bambu Lab: Diverging Patent Outcomes in the U.S. and Europe
Written with artificial intelligence.
The ongoing legal battle between Stratasys and Bambu Lab highlights contrasting patent interpretations in the U.S. and Europe. While a U.S. jury found Bambu Lab liable for patent infringement, a European court ruled differently, reflecting the complexities of patent law in different jurisdictions.
Overview of the Dispute
This article continues the examination of the Stratasys and Bambu Lab patent dispute, focusing on the differing legal outcomes in the U.S. and Europe. Part 1 detailed the U.S. verdict of $27.6 million against Bambu Lab, while this part addresses the European proceedings and their implications for the 3D printing industry.
European Court Findings
On April 24, 2026, the Hague Local Division of the Unified Patent Court (UPC) reviewed Stratasys' request for a preliminary injunction against Bambu Lab’s H2C printer, which involved European patent EP2964450. Notably, the court denied the injunction, determining that Bambu Lab's implementation of the purge tower likely fell outside the patent's scope. A significant factor was the interpretation of "layer by layer," with the court asserting that each layer must be made from a single material, contrasting with Bambu Lab's capability to use multiple materials within a single layer.
U.S. Verdict vs. European Ruling
In September 2026, a Texas jury reached a starkly different conclusion, finding Bambu Lab infringed on four Stratasys patents and awarding $27.6 million in damages. The discrepancy between the two outcomes arises from different judicial processes, legal standards, and the specific issues each court was tasked with deciding. The U.S. case involved a jury trial on multiple patents, while the European case focused solely on preliminary measures concerning one patent.
Ongoing Legal Complexities
Bambu Lab has expressed its intent to appeal the U.S. verdict and is concurrently challenging the validity of Stratasys patents before the U.S. Patent Trial and Appeal Board (PTAB). The ongoing nature of these legal procedures indicates that the dispute is far from resolved, as multiple courts and processes are examining various aspects of the case.
Conclusion
This dispute raises critical questions about the balance between protecting innovations and fostering further advancements within the rapidly evolving 3D printing sector. Both companies present valid arguments regarding their respective patent rights. Moving forward, the industry must consider how to define and delineate patent boundaries to encourage continued innovation while upholding intellectual property rights.