ToughBuilt Industries, Inc. vs. Meridian International Co. Ltd.

Explore the PTAB proceeding IPR2025-01461 filed by ToughBuilt Industries, Inc. on 2025-08-28. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01461

Filing Date

2025-08-28

Accorded Filing Date

2025-08-28

Institution Decision Date

2026-02-18

Last Modified Date

2026-08-31

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

ToughBuilt Industries, Inc.

Represented By

Bemben, Richardet al

Patent Owner / Respondent

Meridian International Co. Ltd.

Represented By

HALSEY, ANNAet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 3700 - Mechanical Engineering & Manufacturing

Patent Information

1 Patent Involved

Respondent Application Number 18518200

Respondent Patent Number 11986946

External Links

Espacenet

Google Patents

Respondent Inventor Hongquan ZHANG et al

Respondent Tech Center TC 3700 - Mechanical Engineering & Manufacturing

Address and Attorney/Agent Information

21 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name EVERSHEDS SUTHERLAND (US) LLP

Customer Number 29052

Address 600 Peachtree St NE, Suite 5200, ATLANTA, GA, 30308, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
33205	Peter Pappas	404-853-8000
34272	Daniel Warren	404-853-8028
34408	Nicola Pisano	858-252-2952
36714	William Warren	404-853-8000
38899	Malvern Griffin Iii	404-853-8233
42737	Kevin King	404-853-8068
52362	David Wigley	404-853-8072
58430	Regis Worley Jr.	858-252-6458
64504	Joshua Aronson	404-853-8000
64544	Jeremy Spier	404-853-8926
65622	Erik Smith	415-577-8801
67307	Umar Bakhsh	404-853-8084
68304	Nash Zogaib	512-721-2674
72839	Joshua Branson	512-721-2700
74749	Timothy Chou	404-853-8160
76993	Chancellor Shafor	404-853-8239
77242	Joel Bradley	770-686-2949
79726	Lindsay Kriz	404-853-8323
81191	John Mosley	858-769-3081
81473	Michael Behlen	415-580-6131
82298	Emma Hawley	920-366-4936

Proceeding Documents

111

2022

Exhibit 2022 - Vallee Declaration Exhibit

2026-08-31 FILING PARTY: PATENT OWNER

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2024

Exhibit 2024 - Dec. 3, 2025 Email Exhibit

2026-08-31 FILING PARTY: PATENT OWNER

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Patent Owner's Statement OTHER

2026-08-31 FILING PARTY: PATENT OWNER

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2023

Exhibit 2023 - July 16, 2026 Email Exhibit

2026-08-31 FILING PARTY: PATENT OWNER

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PRELIMINARY GUIDANCE Patent Owner’s Motion To Amend 37 C.F.R. § 42.121(e) ORDER

2026-08-24 FILING PARTY: BOARD

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ToughBuilt Industries, Inc. vs. Meridian International Co. Ltd.

Proceeding Overview

Parties & Counsel

Petitioner

ToughBuilt Industries, Inc.

Represented By

Patent Owner / Respondent

Meridian International Co. Ltd.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Exhibit 2022 - Vallee Declaration Exhibit

Exhibit 2024 - Dec. 3, 2025 Email Exhibit

Patent Owner's Statement OTHER

Exhibit 2023 - July 16, 2026 Email Exhibit

PRELIMINARY GUIDANCE Patent Owner’s Motion To Amend 37 C.F.R. § 42.121(e) ORDER

Patent Owner's Objection to Evidence OTHER

Patent Owner's Objection to Evidence OTHER

EX1051 - McCarthy Deposition Transcript Exhibit

Petitioner's Reply REPLYTOOPP

EX1049 - McCarthy Declaration in Support of Petitioner's Reply Exhibit

Exhibit 2021 - May 5, 2026 Correspondence Exhibit

EX1050 - Geometric Design of Linkages 2nd Edition Exhibit

EX1046 - Meridian Response Letter Exhibit

EX1048 - IPR2025-01462 Vallee Deposition Transcript Exhibit

Petitioner’s Opposition to Motion to Amend OPPOSITION

EX1045 - US6508495B1 Exhibit

EX1047 - IPR2025-01461 Vallee Deposition Transcript Exhibit

EX1044 - McCarthy Declaration ISO Opposition to Motion to Amend Exhibit

Petitioner's Notice of Deposition NOTICE

Petitioner's Objections to Evidence OTHER

Exhibit 2015 - US '200 Application Exhibit

Exhibit 2018 - CN '456 Application Exhibit

Patent Owner's Contingent Motion to Amend MOTION

Exhibit 2014 - May 13, 2026 McCarthy Deposition Transcript Exhibit

Exhibit 2013 - Vallee CV Exhibit

Patent Owner's Response to Petition RESPONSE

Exhibit 2012 - Declaration of Glenn E. Vallee, Ph.D., P.E. Exhibit

Exhibit 2019 - Translation of '862 Application Exhibit

Exhibit 2020 - Translation of '456 Application Exhibit

Exhibit 2016 - US '907 Application Exhibit

Exhibit 2017 - CN '862 Application Exhibit

Notice of Stipulation Regarding Amendment of Due Dates NOTICE

Petitioner's Updated Mandatory Notices NOTICE

Notice of Deposition NOTICE

EX1043 - Milliken PHV Declaration Exhibit

Petitioner's Updated Mandatory Notices NOTICE

Petitioner's Updated Power of Attorney NOTICE

Petitioner's Notice of Intent to Designate Provisionally Recognized PTAB Attorney as Back-up Counsel NOTICE

Notice: Updated Mandatory Notice (Second Amended) NOTICE

Patent Owner's Objection to Evidence Presented in Support of Petition OTHER

Order: SCHEDULING ORDER ORDER

IPR2025-01461 Petitioner's Objections to Evidence OTHER

Institution Decision: Grant DECISION

Director Discretionary Decision: Refer RESPONSE

Patent Owner's Preliminary Response POPR

EX1034 - Multi-Step U.S. Patent Search Strategy Exhibit

EX1037 - Declaration of Tony Kriz Exhibit

EX1038 - Plaintiff Memo ISO Motion for Preliminary Injunction Exhibit

EX1035 - Meridian Complaint for Patent Infringement Exhibit

Exhibit 2010 - Pratt Declaration Exhibit

EX1042 - PART _ Thesaurus Exhibit

Petitioner's Opposition to Discretionary Denial Brief RESPONSE

EX1033 - File History of U.S. Appl. No. 18-176,907 Exhibit

Exhibit 2011 - Tentative Claim Construction Order Exhibit

EX1041 - IPR2025-01462 Petitioner's Opposition to Discretionary Denial Exhibit

EX1040 - IPR2025-01462 Petition for Inter Partes Review Exhibit

EX1039 - 8-24-cv-01840 2025-03-21 Plaintiff Meridian International Co. Ltd.'s Infringement Contentions (Redacted) Exhibit

Exhibit 2009 - FAQs for Interim Processes Exhibit

Exhibit 2007 - Interim Director Discretionary Process Exhibit

Exhibit 2006 - First Amended Invalidity Contentions Exhibit

Discretionary Denial Brief RESPONSE

Exhibit 2002 - June 5 Notice Letter Exhibit

Exhibit 2005 - March 26 PTAB Memo Exhibit

Exhibit 2008 - US 11642777 Exhibit

Exhibit 2004 - March 24 PTAB Memo Exhibit