Autonomous Train Operation Patents: Leaders & Filing Trends 2026
- 28.7% concentration at the top. The five leading assignees account for 642 of the 2,234 records in scope, with a long tail of single- and few-filing entrants behind them.
- Filings cooled from a 2022 peak. Activity peaked at 204 records in 2022; filings fell from 152 in 2021 to 98 in 2024, a 36% drop over that span, though 2025–2026 counts are still filling in as publications lag filing.
- Railway traffic control dominates the claim space. B61L covers 72.2% of all records, while AI-based control (G06N, 3.4%) and digital transmission (H04L, 3.6%) remain comparatively open.
Filing growth compares 2021 (152 records) with 2024 (98) — 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 2,234 records in scope (CR5), not by the ranked leaders only.
What the autonomous train operation patent record shows
Autonomous train operation sits at the intersection of railway signalling, traction control and onboard computing. The 2,234 records in scope span filings from 2015 through the 2026 cut-off, concentrated heavily around railway traffic control equipment rather than the AI or communications layers that get more public attention. Automatic train protection, train position determination and traction supply management form the technical backbone of the field, and most granted claims sit inside that backbone rather than at its newer edges.
Filing activity is split between established signalling suppliers with decades of onboard-device patents and a cluster of Chinese rail-transit technology firms that entered more recently and now file at comparable volume. Receiving-office data shows China as the largest single office, ahead of the United States, Japan and Europe, which points to where enforcement and freedom-to-operate questions are most likely to arise first.
Filing trends and technology composition
Two views of the same 2,234-record dataset: the pace of filing over time, and how records distribute across the IPC subclasses that define the technology.
Filings rose to a 2022 peak then eased
Annual filings climbed from 91 in 2017 to a peak of 204 in 2022, then declined to 98 by 2024 (a 36% drop from the 2021 level of 152). Because publication trails filing by roughly 18 months, the 2025 and 2026 figures are still incomplete and should not be read as a continued decline.
Railway traffic control anchors the field
B61L (railway traffic control) appears in 72.2% of all 2,234 records, far ahead of B60L electric propulsion (19.9%) and B60T braking (6.7%). Software-adjacent classes — G06F data processing (5.0%), H04L digital transmission (3.6%), G05B control systems (3.5%) and G06N AI-based computing (3.4%) — each cover a small minority of records, marking them as comparatively under-claimed relative to the signalling core.
Shares are the percentage of the 2,234 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Autonomous Train Operation Patent Landscape with Eureka
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Try EurekaRepresentative and most-cited filings
EP2746132B1 — CTCS-3 onboard automatic train operation device
Filed by Beijing National Railway Research & Design Institute, this filing describes a CTCS-3 onboard device for automatic train operation comprising an interface module connecting a train control command generating module to an automatic train protection device and a train control interface, coordinating command generation with protection-system exchange.Abstract condensed from the original filing text.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6135396A | System and method for automatic train operation | 285 |
| 2 | US5398894A | Virtual block control system for railway vehicle | 234 |
| 3 | US5437422A | Railway signalling system | 213 |
| 4 | US20100312461A1 | System and method for vitally determining position and position uncertainty of a railroad vehicle employing d… | 152 |
| 5 | US20080195257A1 | Guidance and Security System for Complex Transport Systems | 144 |
| 6 | US20040064235A1 | Vehicle dynamics production system and method | 144 |
| 7 | US20110006912A1 | Track Worker Safety System | 143 |
| 8 | US6865454B2 | Train control system and method of controlling a train or trains | 136 |
| 9 | US5364047A | Automatic vehicle control and location system | 135 |
| 10 | US20060244830A1 | System and method of navigation with captured images | 134 |
Citation counts reflect influence within the searched corpus and favour older filings; they are not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the raw counts are put in context: where claim density already blocks new filings, where activity is cooling rather than growing, and which offices matter most for enforcement risk.
A dense top, a long tail below
The five leading assignees hold 642 of the 2,234 records in scope, and the top ten extend that to 979 records (43.8%). Below tenth place, filing counts drop off quickly, meaning most of the ranked field holds only a handful of families each.
Growth has cooled since the 2022 peak
Filings peaked at 204 records in 2022 and fell to 98 by 2024. Several of the most active historical filers show flat or declining recent-year counts, though the newest publication years remain incomplete due to filing-to-publication lag.
China leads receiving-office volume
China accounts for 589 records, ahead of the United States (357), Japan (273), Europe (257) and the WIPO PCT route (134). Enforcement exposure and prior-art density are both weighted toward China and the US for any new filing strategy.
The signalling core is saturated; adjacent layers are not
Railway traffic control claims (B61L) dominate the corpus, while AI-based control (G06N, 3.4%) and digital data transmission (H04L, 3.6%) cover only a small minority of records despite their relevance to modern autonomous operation.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to autonomous train operation patent landscape, with the prior art for and against each one.
Assignee concentration and recent momentum
The ranked leaders combine long-established signalling suppliers with a cluster of Chinese rail-transit technology firms that scaled filing volume more recently. Co-assignee pairings show where R&D and operating-company affiliates file jointly.
A clear leader ahead of a competitive pack
The top-ranked assignee holds 181 records, well ahead of fifth place at 90 and tenth place at 57. That gap suggests one organisation has built a materially deeper filing position than its closest competitors.
Parent-affiliate filing pairs are common among Japanese and Chinese groups
The strongest co-assignee pairing links a parent company and its infrastructure-systems affiliate across 30 shared families, a pattern repeated at smaller scale in at least two other groups in the dataset's 10 identified co-assignee pairs.
Recent-year counts are down across most active filers
Several of the historically most active assignees show sharply reduced or zero filings in the latest tracked year, with year-over-year changes ranging from -33% to -100%. Given publication lag, this likely overstates any real slowdown but still signals a pause worth watching.
| Assignee | Recent year | YoY |
|---|---|---|
| Beijing National Railway Research & Design Institute of Signal & Communication Group Co., Ltd. | 4 | -33% |
| Traffic Control Technology Co., Ltd. | 2 | -33% |
| Hitachi, Ltd. | 0 | -100% |
| Toshiba Corporation | 0 | — |
| Mitsubishi Electric Corporation | 0 | -100% |
| CRSC Urban Rail Transit Technology Co., Ltd. | 0 | -100% |
| Nippon Signal Co., Ltd. | 0 | — |
| Thales Canada Inc. | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is filing strategy, freedom-to-operate review or competitive tracking.
Map claims against the B61L core before filing
Given 72.2% of records sit in railway traffic control, a new filing there needs a tight novelty search against the dense prior art rather than a broad functional claim.
Run a claim comparison in EurekaTrack recent-year momentum by assignee
Several leading filers show sharp year-over-year drops, but publication lag makes 2025-2026 data provisional; revisit assignee momentum as later filings publish.
Set up assignee monitoring in EurekaEvaluate white space in AI-based control and sensor fusion
G06N and diverse-sensor position determination cover a small share of records relative to their technical relevance to autonomous operation, making them candidates for first-claim positions.
Explore white space with EurekaFrequently asked questions
The leading assignee in this dataset holds 181 of the 2,234 records in scope, a clear margin over the fifth-ranked assignee at 90 and the tenth-ranked at 57. Filing activity is concentrated among signalling equipment suppliers and, more recently, Chinese rail-transit technology firms. Below the top ten, filing counts drop off quickly into a long tail of assignees with only a few records each, so any competitive read should focus on the top group rather than the full ranked list.
Filing activity rose steadily to a peak of 204 records in 2022, then fell to 98 by 2024, a 36% decline from the 2021 level of 152. That is a real cooling trend over a confirmed three-year window, not a projection. Figures for 2025 and 2026 are still incomplete because patent publication typically lags filing by around 18 months, so the most recent years will fill in further and should not yet be read as continued decline.
Railway traffic control (IPC class B61L) appears in 72.2% of all 2,234 records, making it by far the largest technical category in the field. Electric vehicle propulsion (B60L) follows at 19.9%, and vehicle braking (B60T) at 6.7%. Software-adjacent categories such as AI-based control (G06N) and digital data transmission (H04L) each cover only a small single-digit share of records, despite being central to how modern autonomous systems actually operate.
China is the largest receiving office in this dataset with 589 records, ahead of the United States at 357, Japan at 273, and the European Patent Office at 257. The WIPO PCT route accounts for 134 records, and Australia trails the group at 105. This distribution suggests that prior-art risk and enforcement exposure are heaviest in China and the United States for anyone filing new claims in this space.
The densest claim space sits in railway traffic control equipment, which leaves comparatively open ground in AI-based train control decision models, diverse-sensor position uncertainty fusion, and wireless train-to-wayside data transmission, each covering only a small share of the 2,234 records despite their relevance to autonomous operation. These branches sit adjacent to the crowded signalling core rather than replacing it, so a workable first claim typically needs to combine a specific sensing or computing method with a traffic-control integration point rather than claim the control logic in isolation.
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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.