Shenzhen Tuozhu Technology Co., Ltd. et al. v. Stratasys, Inc. et al.

IPR2025-00532

Stratasys has filed a Request for Director Review to overturn the referral and institution of an IPR covering its 3D‑printing patent. The company argues the PTAB misapplied Fintiv factors and that the parallel district‑court case makes the IPR redundant. It seeks termination of the proceeding under § 314(a).

Jurisdiction
US PTAB
Case Number
IPR2025-00532
Decision Date
2 May 2025
Filing Date
2 May 2025

Detailed Summary

In IPR2025-00532, Stratasys, Inc. challenges the PTAB’s decision to refer and institute inter partes review of claims 1‑15 of U.S. Patent No. 10,556,381, a 3D‑printing technology patent. The Patent Owner contends that the Acting Director failed to give proper weight to Fintiv factors 2 and 3, ignoring the imminent district‑court trial date and the extensive discovery already completed. It further argues that the petitioner’s stipulations do not moot the parallel litigation, allowing duplicate invalidity challenges. Relying on case law and the Guidance Memorandum, Stratasys requests Director Review to vacate the decisions and terminate the IPR under 35 U.S.C. § 314(a).

Practitioner Note

This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in Shenzhen Tuozhu Technology Co., Ltd. et al. vs Stratasys, Inc. et al. is valuable context for structuring arguments or assessing risk in similar proceedings.

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