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

Explore the PTAB proceeding IPR2025-00532 filed by Shenzhen Tuozhu Technology Co., Ltd. et al. on 2025-02-05. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00532

Filing Date

2025-02-05

Accorded Filing Date

2025-02-05

Institution Decision Date

2025-10-06

Last Modified Date

2026-09-29

Proceeding Type

IPR

Termination Date

2026-09-29

Trial Status

Final Written Decision

Parties & Counsel

Petitioner

Shenzhen Tuozhu Technology Co., Ltd. et al.

Represented By

Griswold, Joshuaet al

Patent Owner / Respondent

Stratasys, Inc. et al.

Represented By

Oaks, Brianet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1700 - Chemical & Materials Engineering

Patent Information

1 Patent Involved

Respondent Application Number 14922267

Respondent Patent Number 10556381

External Links

Espacenet

Google Patents

Respondent Inventor Aljosa Kemperle et al

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

17 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name WESTMAN CHAMPLIN & KOEHLER, P.A.

Customer Number 27367

Address 121 South Eighth Street, Suite 1100, Minneapolis, MN, 55402, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
20147	Nickolas Westman	612-334-3222
30214	Zbigniew Sawicki	612-334-3222
30514	James Young	612-330-0495
33172	Hallie Finucane	612-334-3222
34557	David Brush	612-334-3222
34797	Judson Champlin	612-334-3222
36188	Steven Koehler	612-334-3222
38354	John Veldhuis-Kroeze	612-334-3222
39758	Theodore Magee	612-334-3222
39801	Daniel Polglaze	612-330-0482
41885	Brian Kaul	612-334-3222
43589	Mai-Tram Lauer	612-330-0583
45956	Alan Rego	612-852-0612
48774	Peter Ims	408-720-9397
53675	Leanne Farrell	612-334-3222
57907	Austen Zuege	612-330-0585
72345	Amanda Prose	612-334-3222

Proceeding Documents

103

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable FINAL

2026-09-29 FILING PARTY: BOARD

Download

Patent Owner's Updated Exhibit List NOTICE

2026-09-21 FILING PARTY: PATENT OWNER

Download

2029

2026-09-04 Notice Exhibit

2026-09-21 FILING PARTY: PATENT OWNER

Download

2030

2026-09-17 Jury Verdict Exhibit

2026-09-21 FILING PARTY: PATENT OWNER

Download

Other: Hearing transcript OTHER

2026-08-11 FILING PARTY: BOARD

Download

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

Proceeding Overview

Parties & Counsel

Petitioner

Shenzhen Tuozhu Technology Co., Ltd. et al.

Represented By

Patent Owner / Respondent

Stratasys, Inc. et al.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable FINAL

Patent Owner's Updated Exhibit List NOTICE

2026-09-04 Notice Exhibit

2026-09-17 Jury Verdict Exhibit

Other: Hearing transcript OTHER

Petitioner's Demonstratives Exhibit

Patent Owner's Updated Exhibit List NOTICE

Patent Owner's Demonstratives Exhibit

Petitioner's Updated Exhibit List NOTICE

Order: ORDER Setting Deadline for Demonstrative Exhibits 37 C.F.R. § 42.70(b) ORDER

Patent Owner's Sur-Reply OTHER

Notice: GRANTED Petitioner’s LEAP request Rishi Gupta NOTICE

Panel Change Order ORDER

ORDER Setting Oral Argument 37 C.F.R. § 42.70(a) ORDER

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Argument OTHER

Transcript of Deposition of Dr. Tim A. Osswald, May 6, 2026 Exhibit

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

Petitioner's Updated Mandatory Notices NOTICE

Panel Change Order ORDER

Joint Stipulation to Modify Due Dates 2-3 OTHER

Petitioner's Notice of Deposition of Dr. Tim A. Osswald NOTICE

Petitioner's Updated Mandatory Notices NOTICE

Claim Construction Order Exhibit

Petitioner's Updated Exhibit List NOTICE

TIM A. OSSWALD & NATALIE RUDOLPH, POLYMER RHEOLOGY (2015), excerpted. Exhibit

Transcript of the Deposition of Dr. Andrew Wolfe Exhibit

Patent Owner's Response RESPONSE

Declaration of Dr. Tim A. Osswald Exhibit

U.S. Patent No. 7,625,198 to Lipson, et al. Exhibit

Ashby, M. F. (2011). Chapter 4: Material Property Charts, Materials Selection in Mechanical Design Exhibit

TIM A. OSSWALD & GEORG MENGES, MATERIALS SCIENCE OF POLYMERS FOR ENGINEERS (3d ed. 2010), excerpted. Exhibit

U.S. Patent No. 6,129,872 to Jang Exhibit

U.S. Patent No. 7,939,003 to Bonassar Exhibit

Notice of Deposition of Andrew Wolfe NOTICE

Notice of Joint Stipulation Extending Due Dates 1,2,3 OTHER

Order Denying Director Review of Institution Decision REHEARING

Authorized Response to Director Review Request OTHER

Email, Subject_IPR2025-00532 Director Review Request Exhibit

Patent Owner's Request for Director Review REQUEST

Order: CASE MANAGEMENT AND SCHEDULING ORDER 37 C.F.R. § 42.5 ORDER

Institution Decision: Granting Institution of Inter Partes Review 35 U.S.C. sec. 314 DECISION

Director Discretionary Decision: Refer RESPONSE

PLAINTIFF’S SUPPLEMENTAL RESPONSES AND OBJECTIONS TO DEFENDANTS’ FIRST SET OF INTERROGATORIES (Nos. 1-21), Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., No. 2:24-cv-00644-JRG Exhibit

PTAB Trial Statistics, January 2024, IPR, PGR (United States Patent Trial and Appeal Board) Exhibit

Petitioner's Opposition to Patent Owners Discretionary Denial Brief RESPONSE

Order Granting Stay in Maxeon Solar PTE. LTD. V. Hanwha Solutions Corp. et al., case no. 2:24-CV-00262-JRG (EDTX) Exhibit

DEFENDANT’S MOTION TO COMPEL, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., No. 2:24-cv-00644-JRG, Dkt. 61 Exhibit

US Securities and Exchange Commission Form 20-F, Stratasys LTD for fiscal year ended December 31, 2024 Exhibit

Email from Christian Tatum to Michael Vincent re Case No. 2:24-cv-00644-JRG (E.D. Tex.); Stratasys, Inc. v. Shenzhen Tuozhu Tech. Co., Ltd. RFPs (Apr. 4, 2025) Exhibit

LegalMetric Individual Judge Report for Judge James Rodney Gilstrap Patent Cases December 2011 to January 2025 Exhibit

July 9, 2025 Stipulation Exhibit

Exhibit E - Exemplary Infringement Evidence for U.S. Patent No. 10,556,381 Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd. et al., 2-24-cv-00644 (EDTX) Exhibit

PLAINTIFF’S MOTION TO COMPEL, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., No. 2:24-cv-00644-JRG, Dkt. 57 Exhibit

Email from Aaron Pirouznia to Christian Tatum re Case No. 2:24-cv-00644-JRG (E.D. Tex.); Stratasys, Inc. v. Shenzhen Tuozhu Tech. Co., Ltd. RFPs Exhibit

PLAINTIFF STRATASYS, INC.’S SECOND AMENDED DISCLOSURE OF ASSERTED CLAIMS AND INFRINGEMENT CONTENTIONS, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd. et al., 2-24-cv-00644 (EDTX) Exhibit

PATENT OWNER'S PRELIMINARY RESPONSE POPR

Lex Machina, Patent Litigation Report 2024 (Feb. 2024) Exhibit

Minute Entry for proceedings held before District Judge Gilstrap on Nov. 7, 2024, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG Exhibit

U.S. District Court, Eastern District of Texas [Live] Calendar Events Set for 6/1/2026-8/1/2026 Exhibit

Order Denying Defendants’ Motion to Dismiss for Failure to Join Indispensable Party, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt. No. 53 Exhibit

Protective Order, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt No. 36 Exhibit

Plaintiff’s Unopposed Motion to Consolidate Case No. 2:25-cv- 00465-JRG with Case Nos. 2:24-cv-00644-JRG and 2:24-cv- 00645-JRG, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt. No. 54 Exhibit

Docket Navigator – Judge Rodney Gilstrap Motion Success for Stay Pending IPR and Time to Milestones Exhibit

United States District Courts — Judicial Caseload Profiles for Eastern District of Texas (Sept. 30, 2024 and Dec. 31, 2024) Exhibit