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

Explore the PTAB proceeding IPR2025-00257 filed by Shenzhen Tuozhu Technology Co., Ltd. et al. on 2024-12-09. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00257

Filing Date

2024-12-09

Accorded Filing Date

2024-12-09

Institution Decision Date

2025-06-06

Last Modified Date

2026-08-11

Proceeding Type

IPR

Termination Date

2026-06-03

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 14574237

Respondent Patent Number 9592660

External Links

Espacenet

Google Patents

Respondent Inventor Riley Reese 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

105

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a) FINAL

2026-06-03 FILING PARTY: BOARD

Download

Other: Hearing transcript OTHER

2026-03-24 FILING PARTY: BOARD

Download

1104

Claim Construction Order Exhibit

2026-03-04 FILING PARTY: PETITIONER

Download

Petitioner's Updated Exhibit List NOTICE

2026-03-04 FILING PARTY: PETITIONER

Download

2019

Patent Owner’s Demonstratives Exhibit

2026-03-03 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

Final Written Decision: JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a) FINAL

Other: Hearing transcript OTHER

Claim Construction Order Exhibit

Petitioner's Updated Exhibit List NOTICE

Patent Owner’s Demonstratives Exhibit

Petitioner's Updated Exhibit List NOTICE

Petitioner's Demonstratives Exhibit

Patent Owner's Updated Exhibit List NOTICE

Ex. 3002 Exhibit

Patent Owner's Sur-Reply OTHER

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

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Argument OTHER

US 20080006966 Mannella Exhibit

Shreir, Corrosion Control Exhibit

Osswald, International Plastics Handbook Exhibit

3M Industrial Adhesives and Tapes Division Exhibit

Preliminary Constructions Exhibit

Horvath, Mastering 3D Printing Exhibit

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

Transcript of Deposition of Dr. Timothy Osswald (Nov. 6, 2025) Exhibit

Joint Stipulation to Modify Due Dates NOTICE

Ex. 3102 Request to submit briefing in the above identified proceedings - Denied. Exhibit

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

General Order: Related Matters Updates ORDER

Patent Owner Response RESPONSE

EX2013 - Temperature Sensors - Analog and Digital Output _ DigiKey Exhibit

EX2018 - 2025-08-20 PR 4-2 Bambu Prop Constrs Exhibit

EX2012 - Temperature Sensors - Thermostats - Solid State _ DigiKey Exhibit

EX2010 - Transcript of the Deposition of Dr. Michael Hickner Exhibit

EX2016 - Hua, T. et al., Research on molten pool temperature in the process of laser rapid forming Exhibit

EX2009 - Osswald Declaration Exhibit

EX2015 - Dinwiddie, R., et al. (2013),. Real-time Process Monitoring and Temperature Mapping of a 3D Polymer Printing Proc Exhibit

EX2014 - Eastman TDS - Trit (71068024) Exhibit

EX2017 - Shreir, L. L., et al., Corrision Corrosion Control, Vol. 2 (1976) Exhibit

EX2011 - Temperature Sensors - RTD (Resistance Temperature Detector) _ DigiKey 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

Notice of Joint Stipulation Extending Due Dates NOTICE

Panel Change Order ORDER

Authorized Response to Director Review Request OTHER

Ex. 3101 Counsel email response denied to file new evidence Exhibit

Exhibit 3100 Exhibit

PATENT OWNER’S REQUEST FOR DIRECTOR REVIEW REQUEST

Institution Decision: Grant DECISION

Order: Scheduling Order ORDER

Petitioner's Updated Exhibit List NOTICE

April 8, 2025 Sotera Stipulation Exhibit

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

Invalidity and Ineligibility Contentions, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, (E.D. Tex. Jan. 30, 2025) Exhibit

PATENT OWNER'S PRELIMINARY RESPONSE POPR

Transcript of Hearing on the Nomination of Howard Lutnick, of New York, to be Secretary of Commerce (Jan. 29, 2025) 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 (E.D. Tex. Nov. 14, 2024) Exhibit

e-Discovery Order, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt No. 41 (E.D. Tex. Dec. 19, 2024) Exhibit

U.S. District Courts — Judicial Caseload Profiles for EDTX (Sept. 30, 2024 and Dec. 31, 2024) Exhibit

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

Patent Owner Updated Mandatory Notices NOTICE

Discovery Order, Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd., No. 2:24-cv-00644-JRG, Dkt No. 35 (E.D. Tex. Dec. 2, 2024) Exhibit

E-mail requesting correction of clerical error Exhibit

PO Mandatory Notice NOTICE

PO Power of Attorney NOTICE

Notice filing date accorded to petition NOTICE

EX1020 Materials Processing Exhibit

EX1013 The Types of 3-D Printing Exhibit