Massachusetts Bay Transportation Authority (MBTA / "the T") is a public transit authority of the Commonwealth of Massachusetts, headquartered at 10 Park Plaza, Boston. It was created by statute in 1964 as the successor to the Metropolitan Transit Authority, whose predecessor lines date to the late 19th century (some profiles cite 1897). It is a government agency, not publicly traded and not a subsidiary of any company; it is governed by a board appointed by the Governor and reports to the state. Press and profile sources put employment in the roughly 6,000–7,000 range and annual operating spending in the billions of dollars; these figures vary by source and should be treated as approximate.
Operations. The MBTA is the largest transit provider in New England and among the largest in the U.S. It directly operates or contracts for eight modes: heavy rail (subway), light rail (Green Line trolley), bus rapid transit, local/express bus, trackless trolley, commuter rail, commuter boat/ferry, and paratransit (THE RIDE). Its district covers 175 communities with roughly 4.7 million residents. It both self-operates service (e.g., subway and bus) and contracts service to private operators (e.g., commuter rail, ferry).
Litigation posture. MBTA is an operating company and a one-time defendant, with zero tracked plaintiff-side patent suits. The single tracked case, Metrom Rail, LLC v. Massachusetts Bay Transportation Authority et al., was filed 2025-05-21 in the U.S. District Court for the District of Massachusetts — the MBTA's home venue, not a plaintiff-friendly out-of-district forum. Plaintiff Metrom Rail is an Illinois company that itself sells train collision-avoidance systems, so this is a competitor/vendor dispute, not a classic NPE campaign.
Case context. Metrom alleged that the Piper Networks GLTPS (Green Line Train Protection System) installed under a $113 million MBTA contract, awarded February 2025, infringes its '738 and '131 patents. In December 2025 the court severed and stayed the claims against the MBTA pending resolution against vendor Piper, and transferred the Piper claims to the Southern District of New York for lack of venue in Massachusetts; the MBTA was later dismissed from the New York action, leaving the stayed Massachusetts case.
Sources: MBTA profiles (Wikipedia-consistent company pages), CourtListener/Justia dockets, Massachusetts Lawyers Weekly, Finnegan D. Mass. litigation update.