标题: PTAB Finds Four Stratasys Patents Unpatentable, Adding Uncertainty to Bambu Lab Damages Case [打印本页] 作者: admin 时间: 2026-10-15 20:07 标题: PTAB Finds Four Stratasys Patents Unpatentable, Adding Uncertainty to Bambu Lab Damages Case On October 15, 2026, Nanjixiong learned that PTAB had found claims in four Stratasys printing patents unpatentable, adding uncertainty to the Texas jury's $27.6 million award against Bambu Lab two weeks earlier.
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US 10,556,381 and US 9,168,698 concern printer force detection and are two of the four patents involved in the jury verdict, accounting for $2.8 million. PTAB found all challenged claims in the former unpatentable and 14 of 15 in the latter. US 11,886,774 and US 10,569,466 belong to the second lawsuit, with all challenged claims found unpatentable.
PTAB decisions do not automatically overturn the jury verdict. Stratasys can appeal to the Federal Circuit. Most damages, $24.8 million, relate to purge-tower and toolpath patents unaffected by these decisions. October 16 is the first case's post-trial motion deadline.
Nanjixiong's observation
PTAB uses a preponderance-of-evidence standard, lower than federal courts' clear-and-convincing standard for invalidity, so differing outcomes are possible. However, three of the five patents asserted in the second case have now received unpatentability findings, creating difficulties for Stratasys.
AI-translated from an article by Kuaixiong on Nanjixiong, originally published on 2026-10-15. Text and images retain the original source attribution. Read the original Chinese article
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