High-Speed Rail Patents: Top Companies & Filing Trends 2026
- Concentrated but not locked up. The top 5 assignees hold 26.7% of all 901 records in scope, and the top 10 hold 37.8% — leaving most of the field outside the leading group.
- Filing has cooled sharply from its peak. Activity peaked at 67 records in 2017 and fell from 24 in 2021 to 6 in 2024, a -75% move over that span, though 2025-26 figures are still filling in.
- Track and running gear outweigh signalling in raw claim volume. E01B (railway track) and B61F (running gear/bogies) each rival B61L (traffic control) for share of the 901 records, showing infrastructure claims are as dense as control-system ones.
Filing growth compares 2021 (24 records) with 2024 (6) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 901 records in scope (CR5), not by the ranked leaders only.
What the high-speed rail patent record actually covers
High-speed rail patenting spans far more than train control: the dataset behind this page covers 901 published records filed between 2015 and 2026 that combine high-speed rail or high-speed train terminology with specific technical subsystems — train position, wheel contact, traction supply, track condition, rail vehicle design and track systems. That breadth means a single search string pulls in signalling engineers, bogie and running-gear specialists, wireless-communications teams and civil-infrastructure filers into one comparable set.
Because publication trails filing by roughly 18 months, the most recent one to two years in any trend line will always look thinner than they eventually turn out to be. The patterns below are read against that lag, not against the raw tail of the chart.
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Filing trend and technology mix
Two views of the same 901-record set: how filing activity has moved year over year, and which IPC subclasses carry the claim volume.
Filing trend: a sharp pull-back from the 2017 peak
Filings peaked at 67 records in 2017. From a more recent baseline, filings fell from 24 in 2021 to 6 in 2024 — a -75% move over three years. Treat 2025 and 2026 as still filling in rather than as evidence of a continued decline.
Technology composition: infrastructure and running gear rival signalling
B61L (railway traffic control) leads at 13.8% of the 901 records, but E01B (railway track & permanent way) at 13.3% and B61F (running gear & bogies) at 12.8% sit close behind. Wireless and digital-transmission classes (H04W, H04L) each clear 7-8%, showing communications claims are now a standing part of the field rather than a niche overlay. Because records can carry multiple IPC classes, these shares add up to more than 100% of the 901-record total.
Shares are the percentage of the 901 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on High-Speed Rail Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about high-speed rail patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative filing and the most-cited records
US20250024304A1 — High speed rail cellular network service
Methods and systems for providing mobile broadband services to high speed rail are provided. The method begins with determining that a user equipment (UE) is moving at a speed between a first threshold and a second threshold between a first location and a second location. The first and second thresholds may be selected to encompass typical speed ranges of high speed rail operation. The method continues with identifying a set of access points between the first location and the second location, then predicting an access point from that set at which to transmit data — because high-speed rail runs on a fixed track, the prediction can rely on the vehicle's known route.Filed by T-Mobile Innovations LLC, published 2025-01-16.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5332180A | Traffic control system utilizing on-board vehicle information measurement apparatus | 196 |
| 2 | US8948690B2 | Doppler-nulling traveling-wave antenna relays for high-speed vehicular communications | 173 |
| 3 | US20180237039A1 | Locomotive control system | 159 |
| 4 | US20080195257A1 | Guidance and Security System for Complex Transport Systems | 144 |
| 5 | US10220881B2 | Cellular structures with fourteen-cornered cells | 128 |
| 6 | US10429006B2 | Cellular structures with twelve-cornered cells | 121 |
| 7 | US20150217790A1 | Data communication system and method | 112 |
| 8 | US20160359741A1 | Data communication system and method | 105 |
| 9 | US20130069834A1 | Doppler-nulling traveling-wave antenna relays for high-speed vehicular communications | 87 |
| 10 | US4864306A | Railway anticollision apparatus and method | 78 |
Citation counts favour older filings in any searched corpus; read them as a signal of influence within this set, not as a ranking of current technical importance.
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Three read-outs from the assignee, trend and technology data that matter more for strategy than the raw counts alone.
Leadership is real but not exclusive
The top 5 assignees combine for 26.7% of all 901 records and the top 10 for 37.8%. That leaves well over 60% of filings spread across a long tail of single- or few-filing entrants, so a newcomer is not automatically boxed out of the field — the open ground is in the tail, not at the front.
Activity has pulled back from its 2017 peak
Filings peaked at 67 in 2017 and fell from 24 in 2021 to 6 in 2024. Several of the most active historical filers show zero filings in the latest year tracked. Given the ~18-month publication lag, the 2025-26 figures should not yet be read as confirmation the field has gone quiet.
Infrastructure claims match signalling claims
B61L (traffic control) leads the IPC mix at 13.8% of records, but E01B (track & permanent way) at 13.3% and B61F (running gear & bogies) at 12.8% are close behind. A filing strategy built only around signalling and control software is missing roughly a third of the claim space sitting in physical track and running-gear subsystems.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to high-speed rail patent landscape, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked leaders account for a minority of total volume, and recent-year activity has gone quiet even among historically active filers — both point to an open field rather than a settled one.
One filer sits well ahead of the pack
The leading assignee holds 88 records, well clear of fifth place at 30 and tenth place at 16. That gap suggests a genuine first-mover position in this search scope rather than a marginal lead.
A fast drop-off after the leader
Volume drops steeply from the leader to fifth place (30 records) and again to tenth place (16), showing a small group of established filers rather than a broad plateau of equally active competitors.
Even established filers have gone quiet recently
Multiple assignees with substantial historical filing counts show zero filings in the most recent tracked year, including one with a -100% year-on-year move. Read this alongside the publication lag rather than as a definitive stop in activity.
| Assignee | Recent year | YoY |
|---|---|---|
| Bombardier Transportation | 0 | — |
| Beijing Didi Infinity Technology and Development Co., Ltd. | 0 | — |
| Greenrail | 0 | — |
| CRRC Qingdao Sifang Co., Ltd. | 0 | -100% |
| Rapiscan Systems, Inc. | 0 | — |
| Network Rail Infrastructure Limited | 0 | — |
| Rail Vision Ltd. | 0 | — |
| Siemens AG | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, portfolio benchmarking or identifying open claim space.
Check freedom-to-operate against the most-cited records
The most-cited records in this set, including the on-board vehicle information measurement and locomotive control filings, anchor prior art that later filings had to design around. Any new filing touching train control or on-board measurement should be checked against these first.
Explore prior art in EurekaMap the under-claimed sub-areas before drafting claims
Wheel-rail contact sensing, traction fault detection and fixed-route cellular handover show thinner density than core signalling and running-gear classes. That gap is where a first claim has the most room to stand.
Run a white space search in EurekaTrack the leading assignee's recent activity
The leading assignee's filing pace has slowed in the most recent tracked year alongside several other historically active filers. Watching whether that continues past the current publication lag will clarify whether the field is consolidating or genuinely cooling.
Set up assignee monitoring in EurekaCommon questions about the high-speed rail patent landscape
One assignee leads this dataset with 88 records, well ahead of the fifth-ranked filer at 30 and the tenth-ranked filer at 16. The top 5 assignees together account for 26.7% of all 901 records in scope, and the top 10 account for 37.8%. That leaves the majority of filings spread across a long tail of smaller filers, so leadership in this field is real but not exclusive.
Filings peaked at 67 records in 2017 and have declined since, falling from 24 in 2021 to 6 in 2024 — a drop of 75% over that span. Because patent publication typically lags filing by around 18 months, the 2025 and 2026 figures in any trend chart are still incomplete and should not be read as proof the field has stopped moving. The safest complete-year comparison is 2021 through 2024.
Railway traffic control (B61L) leads at 13.8% of the 901 records, closely followed by railway track and permanent way (E01B) at 13.3% and running gear and bogies (B61F) at 12.8%. Wireless communication (H04W) and digital information transmission (H04L) each account for roughly 7-8% of records, showing that connectivity claims now sit alongside the traditional mechanical and control-system subject matter. Because a single record can carry multiple IPC classes, these shares add up to more than 100% of the total.
Relative to the dense claim space around traffic control and running gear, areas such as wheel-rail contact condition sensing, traction power supply fault detection and cellular handover prediction on fixed routes show thinner coverage in this dataset. These are not empty fields, but they carry less claim density than the core signalling and mechanical classes, which makes them worth checking before assuming a concept is already blocked. A targeted freedom-to-operate search on the specific sub-area is still the reliable way to confirm open space.
The United States receives the largest share of filings in this dataset at 250 records, followed by the European Patent Office at 134, China at 72, Japan at 53, WIPO PCT filings at 51, and Germany at 45. This spread reflects both major rail-manufacturing regions and jurisdictions used for broader international filing strategy via the PCT route. A filer targeting global coverage in this space would typically need to account for all of these offices rather than assuming any single jurisdiction dominates.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.