标题: PTAB Invalidates Four Stratasys Patents in Bambu Lab Dispute [打印本页] 作者: admin 时间: 2026-10-12 17:17 标题: PTAB Invalidates Four Stratasys Patents in Bambu Lab Dispute On October 10, 2026, Nanjixiong learned that the USPTO's Patent Trial and Appeal Board (PTAB) had found four Stratasys patents unpatentable because their claims were obvious.
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The decisions came less than three weeks after a Texas jury awarded Stratasys $27.6 million against Bambu Lab on September 17. Two force-detection patents, US9168698 and US10556381, were involved in that verdict and accounted for approximately $2.8 million in damages. The other two, US11886774 concerning configuration data identification and US10569466 concerning tagged printing materials, are part of Stratasys' second lawsuit, which has not yet gone to trial.
PTAB and courts apply different evidentiary standards: PTAB uses a preponderance of the evidence, while courts require clear and convincing evidence. The decisions do not automatically eliminate the $2.8 million award, and review and appeals remain possible. Most damages are unaffected: approximately $14.2 million relates to a purge-tower patent and $10.6 million to an extrusion-path creation patent.
Nanjixiong's observation
Bambu Lab's PTAB victories create an opening in the dispute, but $24.8 million of the Texas award remains unaffected. Both sides can continue appealing, and the final outcome depends on completion of all proceedings.
AI-generated illustration.
AI-translated from an article by Kuaixiong on Nanjixiong, originally published on 2026-10-12. Text and images retain the original source attribution. Read the original Chinese article
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