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

Explore the PTAB proceeding IPR2025-00321 filed by Shenzhen Tuozhu Technology Co., Ltd. et al. on 2024-12-17. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00321

Filing Date

2024-12-17

Accorded Filing Date

2024-12-17

Institution Decision Date

2025-06-18

Last Modified Date

2026-07-10

Proceeding Type

IPR

Termination Date

2026-06-09

Trial Status

Final Written Decision - Appealed

Parties & Counsel

Petitioner

Shenzhen Tuozhu Technology Co., Ltd. et al.

Represented By

Hawkins, Michaelet 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 13790924

Respondent Patent Number 9421713

External Links

Espacenet

Google Patents

Respondent Inventor William J. Swanson 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

Petitioner's Notice of Appeal NOTICE

2026-07-10 FILING PARTY: PETITIONER

Download

Final Written Decision: Final Written Decision Determining No Challenged Claims Unpatentable 35 U.S.C. sec. 318a FINAL

2026-06-09 FILING PARTY: BOARD

Download

Other: Hearing transcript OTHER

2026-05-06 FILING PARTY: BOARD

Download

Petitioner's Updated Exhibit List NOTICE

2026-04-10 FILING PARTY: PETITIONER

Download

Patent Owner's Updated Exhibit List NOTICE

2026-04-10 FILING PARTY: PATENT OWNER

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

Petitioner's Notice of Appeal NOTICE

Final Written Decision: Final Written Decision Determining No Challenged Claims Unpatentable 35 U.S.C. sec. 318a FINAL

Other: Hearing transcript OTHER

Petitioner's Updated Exhibit List NOTICE

Patent Owner's Updated Exhibit List NOTICE

Patent Owner's Demonstratives Exhibit

Petitioner's Demonstratives Exhibit

Claim Construction Order Exhibit

Petitioner's Updated Exhibit List NOTICE

ORDER Setting Oral Argument 37 C.F.R. § 42.70 ORDER

Order: ORDER Setting Oral Argument 37 C.F.R. § 42.70 ORDER

Patent Owner's Sur-Reply OTHER

Petitioner's Request for Oral Argument OTHER

Patent Owner's Request for Oral Argument OTHER

Fortus 360mc Exhibit

Second Declaration of Dr. Michael A. Hickner Exhibit

U.S. Patent No. 10,065,354 O'Neil Exhibit

Transcript of November 21, 2025 deposition of Paul Leavitt Exhibit

U.S. Patent No. 10,583,604 Yuyama Exhibit

Petitioner's Reply to Patent Owner's Response to Petition REPLYTOOPP

Transcript of November 12, 2025 deposition of Gary Larson Exhibit

Introducing KISSlicer (2012) Exhibit

Mojo 3D Printer User Guide Exhibit

Petronas Twin Towers Exhibit

KISSlicer (2012) Exhibit

Redline Comparison of EX2014 and EX2015 Exhibit

KISSlicer pre-release 1.0.8 Exhibit

U.S. Patent No. 9,688,025 Stava Exhibit

Transcript of November 4, 2025 deposition of Dr. Tim A. Osswald Exhibit

Joint Stipulation to Modify Due Dates NOTICE

Petitioner's Notice of Deposition of Paul Leavitt NOTICE

Petitioner's Notice of Deposition of Gary Larson NOTICE

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

General Order: Related Matters Updates ORDER

Petitioner's Objections to Evidence OTHER

Amended Declaration of Paul Leavitt Exhibit

Transcript of August 29, 2025 Deposition of Dr. Hickner Exhibit

Image from combined file representing EX1014 and EX1015 Exhibit

Osswald, T.A., UNDERSTANDING POLYMER PROCESSING, Hanser Publishers (2011) Exhibit

Patent Owner's Response RESPONSE

Amended Declaration of Gary Larson Exhibit

Declaration of Dr. Tim A. Osswald Exhibit

Order Denying Director Review of Institution Decision REHEARING

Patent Owner's Notice of Deposition of Michael Hickner NOTICE

PATENT OWNER’S UPDATED MANDATORY NOTICES NOTICE

Authorized Response to Director Review Request OTHER

Petitioner’s Objections to Evidence OTHER

Exhibit 3100 Exhibit

Patent Owner Request for Director Review REQUEST

Petitioner's Updated Exhibit List - June 23, 2025 NOTICE

June 17, 2025 Stipulation Exhibit

Institution Decision: Grant DECISION

Order: Scheduling Order ORDER

Patent Owner's Preliminary Sur-Reply OTHER

Petitioner's Preliminary Reply to Patent Owner’s Preliminary Response OTHER

April 8, 2025 Sotera Stipulation Exhibit

Petitioner's Updated Exhibit List NOTICE

Complaint, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt No. 1 (E.D. Tex. Aug. 8, 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

Declaration of Gary Larson Exhibit

U.S. Patent No. 6,645,412 ("Priedeman-412") Exhibit

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

PATENT OWNER'S PRELIMINARY RESPONSE POPR

Protective Order, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt No. 36 (E.D. Tex. Dec. 3, 2024) Exhibit

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