Plaintiff
7 cases as plaintiff.
SHENZHEN TUOZHU TECHNOLOGY CO., LTD., often known as Tuozhu or as the parent company of Bambu Lab, is a private Chinese consumer technology firm headquartered in Shenzhen, Guangdong, China. Founded in 2020, the company has rapidly grown, with estimated annual revenues reaching 5.5-6 billion yuan (approximately US$840 million) and a net profit close to 2 billion yuan (approximately US$280 million) as of November 2025. It reportedly employs over 1,000 people and has captured a significant global market share in 3D printer shipments.
The company's primary operations revolve around its Bambu Lab brand, which manufactures desktop 3D printers, filaments, and accessories. Bambu Lab is known for its integrated 3D printing solutions, including features like automatic leveling, fully enclosed structures, and multi-color printing systems. Additionally, Shenzhen Tuozhu Technology operates the MakerWorld platform, an online community for 3D models.
SHENZHEN TUOZHU TECHNOLOGY CO., LTD. is an operating company engaged in patent litigation, demonstrating a posture as both a defendant and a plaintiff in disputes. The company has been named as a defendant in one case in the U.S. District Court for the Eastern District of Texas, Marshall Division, and has initiated two plaintiff cases at the Patent Trial and Appeal Board (PTAB) of the USPTO. This pattern suggests an active defense against infringement allegations, often by challenging the validity of asserted patents.
All tracked litigation involves Stratasys, Inc. as the opposing party, indicating a direct dispute within the 3D printing industry. The U.S. District Court case against Shenzhen Tuozhu Technology Co., Ltd. involves allegations from Stratasys that Bambu Lab's 3D printers infringe on patents, including one related to heated build platforms acquired by Stratasys from Arevo, Inc. Shenzhen Tuozhu Technology Co., Ltd. has also secured a patent for a new 3D printer heatbed design, which could be relevant to its legal position against Stratasys.
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Inter partes review petition by Shenzhen Tuozhu Technology Co., Ltd. et al. challenging U.S. Patent No. 11,886,774; instituted on October 6, 2025 and pending.
Shenzhen Tuozhu Technology Co., Ltd. et al. petitioned for inter partes review of U.S. 11,167,464. The PTAB denied institution on October 6, 2025.
Shenzhen Tuozhu Technology Co., Ltd. et al. filed an IPR petition challenging U.S. Patent 10,569,466. The PTAB instituted trial on October 6, 2025; no final written decision was reflected.
Shenzhen Tuozhu Technology Co., Ltd. et al. (Bambu) petitioned for inter partes review of U.S. Patent 10,556,381 against Stratasys. The PTAB instituted trial on 2025-10-06; a final written decision for this IPR is not confirmed in the narrative.
PTAB inter partes review petition by Shenzhen Tuozhu Technology Co., Ltd. et al. challenging U.S. Patent No. 9,168,698 B2. Institution was granted and the proceeding remains pending.
Bambu Lab entities petitioned for inter partes review of U.S. 8,747,097. The PTAB did not institute the proceeding, leaving the patent intact; this was the only one of Bambu Lab's four December 2024 PTAB challenges not instituted.
Bambu Lab entities filed a declaratory-judgment action against Stratasys seeking non-infringement and/or invalidity as to US 10,556,381, among ten asserted patents. The action was transferred from W.D. Tex. to E.D. Tex. as No. 2:25-cv-00465-JRG and consolidated into lead case 2:24-cv-00644-JRG.