I'll research this company to build the profile.
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Ground Transportation Systems USA, Inc. is the name under which Hitachi Rail GTS USA Inc. appeared in litigation during 2022–2024. The entity was originally Thales Transport & Security, Inc.; it was renamed Ground Transportation Systems USA, Inc. on April 11, 2022, and then Hitachi Rail GTS USA Inc. on June 3, 2024 (per SFMTA contract records and Florida Sunbiz filings). Its U.S. office is at 99 Park Avenue, New York, NY. It is a U.S. subsidiary of Hitachi Rail Limited, itself part of Hitachi, Ltd. (TSE: 6501), following Hitachi Rail's €1.66bn (~$1.8bn) acquisition of Thales's Ground Transportation Systems business, completed May 31, 2024. Hitachi Rail reports roughly 24,000 employees worldwide post-closing and about 2,500 across the U.S. and Canada; entity-specific revenue is not disclosed.
Operations. The company is an operating rail-technology supplier, not an NPE. It provides rail signaling and train control—including Communications-Based Train Control (CBTC), Automatic Train Control (ATC), mainline and freight digital signaling—plus telecommunications/supervision systems, ticketing and fare-collection solutions, and related cybersecurity. U.S. work includes ATC for San Francisco's Central Subway and sole-source ATC maintenance for the Jacksonville Skyway.
Litigation posture. Case data shows one plaintiff-side and one defendant-side appearance. It is a defendant in Metrom Rail, LLC v. Ground Transportation Systems USA, Inc. et al. (S.D.N.Y., 1:23-cv-02920), consolidated from a Delaware filing and severed from parallel Siemens/Humatics and Piper Networks actions. Separately, it is a co-petitioner in Siemens Mobility, Inc. et al. v. Metrom Rail, LLC at the PTAB (IPR2023-00470), challenging Metrom's train collision-avoidance and worker-protection patents ('227, '131, '595, '709, '363). This is an operating company defending against a smaller patent holder's infringement claims while joining invalidity challenges—not a patent assertion entity. Venue is S.D.N.Y., not a notably plaintiff-friendly district such as E.D. Tex.
Context. The patents at issue concern UWB/GPS-based train positioning and collision avoidance, competing with legacy CBTC systems the company and Siemens supply to transit agencies including MTA. The Federal Circuit addressed the PTAB's obviousness findings in a 2026 opinion.