TOUGHBUILT INDUSTRIES, INC. v. Meridian International Co Ltd.

This Inter Partes Review (IPR) case, IPR2025-01462, involves two operating companies in the construction and home improvement tool market. The petitioner, TOUGHBUILT INDUSTRIES, INC., is a U.S.-based company known for designing, manufacturing, and distributing innovative tools and accessories such as tool pouches, rigs, belts, bags, kneepads, sawhorses, and workbenches. The patent owner, Meridian International Co Ltd., is a global tool and hardware company established in Shanghai, China, specializing in hand tools, storage tools, garden tools, and power tool accessories, and also markets products under private brands like "TACTIX" and "ONSITE."

The IPR was filed by ToughBuilt in response to a patent infringement lawsuit initiated by Meridian International Co., Ltd. in the U.S. District Court for the Central District of California (Case No. 8:24-cv-01840, filed August 21, 2024). Meridian's lawsuit alleges that ToughBuilt's "StackTech" modular tool box system infringes its patents. The dispute also extends to ToughBuilt's involvement with "CaseStack"-capable soft bags sold under Lowe's Kobalt brand, which are designed to interconnect with other CaseStack products, some of which originate from Meridian. The central technology at issue, embodied in U.S. Patent 11,192,689, relates to a "Stackable Storage Box" featuring a locking mechanism with first and second sliding mechanisms configured to engage corresponding locking grooves of other storage boxes for secure stacking.

This IPR is currently pending before the Patent Trial and Appeal Board (PTAB) and has been instituted, meaning the Board has found a reasonable likelihood that at least one claim of U.S. Patent 11,192,689 is unpatentable. The PTAB is an administrative body within the USPTO that provides an alternative, often faster and less costly, forum for challenging patent validity compared to district court litigation. The related district court case has reportedly been paused awaiting the outcome of this IPR. This case is notable as it represents a competitive battle between two significant players in the modular tool storage market, with ToughBuilt actively seeking to invalidate Meridian's patent as a defense against infringement claims, especially after a district court denied Meridian's motion for a preliminary injunction, indicating Meridian was "not likely to succeed" on its infringement claims. The specific PTAB panel judges assigned to IPR2025-01462 were not explicitly identified in the available search results.

The Inter Partes Review (IPR) proceeding IPR2025-01462, filed by TOUGHBUILT INDUSTRIES, INC. against Meridian International Co Ltd., is currently pending and has been instituted. This IPR challenges U.S. Patent No. 11,192,689, owned by Meridian International Co Ltd., and runs parallel to a patent infringement lawsuit filed by Meridian against ToughBuilt in district court.

Here's a chronological summary of the key legal developments:

Parallel District Court Litigation:

• 2024-08-20: Meridian International Co., Ltd. filed a patent infringement lawsuit against ToughBuilt Industries, Inc., Case No. 8:24-cv-01840, in the U.S. District Court, Central District of California. This case is active.
• Late 2024: Meridian filed a motion for a preliminary injunction in the district court case, seeking to prevent ToughBuilt from selling allegedly infringing bags. The court denied this motion, ruling that Meridian was "not likely to succeed" on its infringement claims.
• Early 2025 (approx.): ToughBuilt stated that they are seeking the invalidation of the two patents at issue in the district court and recovery of their fees and costs.
• Later: The district court lawsuit was paused, awaiting the outcome of the IPR regarding the patent's invalidation. This pause could last until mid-to-late 2026.

IPR Proceedings (IPR2025-01462):

• 2025-08-28: TOUGHBUILT INDUSTRIES, INC. filed the Inter Partes Review petition IPR2025-01462, challenging U.S. Patent No. 11,192,689. The petitioner's counsel is Sterne, Kessler, Goldstein & Fox PLLC, with Richard M. Bemben as lead attorney. The patent owner, Meridian International Co Ltd., is represented by counsel including Anna Halsey of Eversheds Sutherland (US) LLP.
• 2026-01-09: A Director Discretionary Decision (Refer) was issued. This indicates that the USPTO Director, in consultation with PTAB judges, determined that discretionary denial of institution was not appropriate, and the petition was referred for a merits review by a three-member panel.
• 2026-02-10: The Patent Trial and Appeal Board (PTAB) issued a decision granting institution of the IPR trial. The status of the IPR is "Trial Instituted."
• 2026-05-21: The Petitioner's Objections to Evidence were filed, indicating active litigation within the instituted IPR proceeding.

Current Posture:
The IPR is currently in the trial phase following institution and is actively proceeding with filings related to evidence. A final written decision in the IPR, which typically occurs about a year after institution, is anticipated around early 2027. The outcome of this IPR is significant as it could lead to the invalidation of U.S. Patent No. 11,192,689, directly impacting the ongoing district court infringement litigation.

The plaintiff, TOUGHBUILT INDUSTRIES, INC., is represented by:

• Richard M. Bemben
  • Role: Lead Attorney for Petitioner. He is also a director in the firm's Electronics Practice Group and a Co-Chair of the firm's PTAB Practice.
  • Firm: Sterne, Kessler, Goldstein & Fox PLLC.
  • Office Location: 1101 K Street NW, 10th Floor, Washington, DC 20005.
  • Experience: Mr. Bemben is a recognized leader in post-grant proceedings before the United States Patent and Trademark Office (USPTO) and has served as counsel in over 150 PTAB proceedings, including inter partes reviews, post-grant reviews, and covered business method reviews. He has also been counsel in more than a dozen related Federal Circuit appeals. In 2023, Patexia ranked him as the 2nd Best Performing PTAB Attorney Representing Patent Owners and within the Top 50 Best Performing PTAB Attorneys Overall. His practice encompasses a wide range of computer and electrical technologies, including microelectronics, semiconductor fabrication, networking and mobile communications, software, and financial and medical technologies. Prior to practicing as an attorney, he served as a patent examiner at the USPTO for approximately six years.

In the Inter Partes Review (IPR) case IPR2025-01462, counsel representing the defendant, Meridian International Co Ltd. (the Patent Owner), includes Anna Halsey.

As of May 25, 2026, the available information identifies the following counsel for Meridian International Co Ltd.:

• Anna Halsey
  • Role: Counsel
  • Firm and Office Location: Information about her specific firm and office location in connection with this case is not immediately available in the provided search results.
  • Relevant Patent Litigation Experience: While her role as counsel is noted, specific details about her patent litigation experience or notable past cases are not present in the provided snippets. The "et al." suggests there may be other attorneys, but their names are not explicitly provided in the initial search result.

To provide a more complete answer, further investigation would be needed to identify Anna Halsey's specific firm and office, as well as any other attorneys listed as "et al." and their respective details.