Terrain Awareness System Patents: Top Companies & Trends 2026
Filing growth compares 2021 (1,405 records) with 2024 (1,169) — 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 25,598 records in scope (CR5), not by the ranked leaders only.
What terrain awareness system patents cover
Terrain awareness systems sit at the intersection of flight-deck safety electronics and the sensing, positioning and processing stacks that feed them. The 25,598 records in this scope span classical radar-based terrain warning through to database-driven and vision-augmented approaches, reflecting decades of iteration on a single problem: telling a pilot, or an autonomous system, when the ground is coming up faster than expected. Terrain Awareness and Warning System (TAWS) lineage anchors the field, but the class mix shows the boundary has widened well past avionics hardware into general navigation, wireless networking and image processing.
The filing footprint is dominated by United States receiving-office activity, with meaningful volume also filed into the EPO and via the PCT route, which points to a field where multinational aerospace and avionics suppliers still treat US filing as the anchor jurisdiction before extending coverage abroad.
Filing trends and technology composition
The two views below cover the same 25,598 records from different angles: one tracks when the filings happened, the other tracks what they claim.
A cooling filing curve, not a dying one
Annual filings rose from 892 in 2017 to a peak of 1,405 in 2021, then eased to 1,169 by 2024 — a -17% move over that three-year window. Years after 2024 in the raw data show lower counts still, but that reflects publication lag of roughly 18 months rather than an actual drop in filing behaviour; those most recent years will keep filling in as records publish.
Where the claims sit
G08G (traffic control systems) and G06F (electric digital data processing) are the two largest classes, each covering roughly 13-14% of records, ahead of G01C (navigation and gyroscopes) at 12.7% and G05D (control of non-electric variables) at 10.2%. G01S (radar, sonar and positioning), H04W (wireless networks), G06T (image processing) and B64D (aircraft equipment specifically) round out the picture — B64D's comparatively modest 6.4% share is notable given the field's aviation roots, suggesting much of the recent claim activity is landing in general-purpose data and sensing classes rather than aircraft-specific hardware.
Shares are the percentage of the 25,598 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Avionics & Flight Control: Terrain Awareness System Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about avionics & flight control: terrain awareness system patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative filing and the most-cited prior art
Terrain awareness system with false alert suppression (US7633430B1)
A terrain awareness and warning system includes electronics for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The electronics receives information from a database and the information is utilized to suppress false alerts or warnings.Filed by Rockwell Collins, this 2009 grant sits squarely in the false-alert-suppression branch of terrain warning, a recurring theme across the dataset's most defensible claims.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20090254572A1 | Digital information infrastructure and method | 2,827 |
| 2 | US6606744B1 | Providing collaborative installation management in a network-based supply chain environment | 2,512 |
| 3 | US6571282B1 | Block-based communication in a communication services patterns environment | 2,353 |
| 4 | US20130278631A1 | 3D positioning of augmented reality information | 2,103 |
| 5 | US20080004904A1 | Systems and methods for providing interoperability among healthcare devices | 1,924 |
| 6 | US20170006135A1 | Systems, methods, and devices for an enterprise internet-of-things application development platform | 1,906 |
| 7 | US20130127980A1 | Video display modification based on sensor input for a see-through near-to-eye display | 1,897 |
| 8 | US20100250497A1 | Electromagnetic pulse (EMP) hardened information infrastructure with extractor, cloud dispersal, secure stora… | 1,776 |
| 9 | US20080001735A1 | Mesh network personal emergency response appliance | 1,720 |
| 10 | US7100195B1 | Managing user information on an e-commerce system | 1,649 |
Citation counts accumulate over time, so older records are structurally favoured — treat this table as a map of influential prior art, not a ranking of current importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once filing volume and technology class are viewed side by side: where the field is dense, where it is thinning, and where the class mix is shifting away from aviation-specific hardware.
A strong core, not a monopoly
The leading assignee alone holds 3,155 records, but the top 5 combined still account for only 20.3% of the 25,598 records in scope, and the top 10 just 25.9%. That leaves roughly three-quarters of filing activity spread across a long tail of contributors, which is unusual for a field this mature.
Past-peak, not in decline
Filing rose steadily to a 2021 peak of 1,405 records before easing to 1,169 by 2024. Because publication lags filing by around 18 months, years closer to the data cut-off will always look lighter than they eventually turn out to be — the -17% figure is the most defensible read of direction available in this dataset.
Aircraft-specific hardware is a minority class
Aircraft equipment claims (B64D) sit behind traffic control, data processing, navigation and radar/positioning classes. The field's centre of gravity has moved toward general sensing and software claims that could, in principle, migrate to other vehicle types.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to avionics & flight control: terrain awareness system patent landscape, with the prior art for and against each one.
Where to take this analysis
The figures above establish the shape of the field. Turning that shape into a filing or freedom-to-operate decision means going claim by claim.
Map claim scope against the leader's portfolio
With one assignee holding 3,155 records, understanding exactly which sub-claims it has staked out is the first step before drafting anything adjacent.
Explore assignee claims in EurekaTrack the under-claimed branches as they fill in
Wireless-fed updates and non-aircraft adaptation show thinner density today; that can change quickly once a well-resourced filer moves in.
Monitor white space in EurekaCommon questions about terrain awareness system patents
One assignee leads the ranked field with 3,155 records, well ahead of the fifth-place holder at 405. That said, the top 5 assignees combined account for only 20.3% of all 25,598 records in scope, so no single company controls the field outright. The remainder is spread across a long tail of contributors, including aerospace primes, avionics suppliers and technology companies working on adjacent sensing and communications claims.
Filing rose from 892 records in 2017 to a peak of 1,405 in 2021, then eased to 1,169 by 2024 — a -17% change over that three-year span. Years after 2024 show lower counts still, but that reflects the roughly 18-month lag between filing and publication rather than an actual collapse in R&D activity. The safest read is that the field has passed its filing peak but is not in freefall.
Traffic control systems (G08G) and electric digital data processing (G06F) are the two largest IPC classes, each covering roughly 13-14% of the 25,598 records. Navigation and gyroscope claims (G01C) and non-electric control claims (G05D) follow close behind. Aircraft-specific equipment claims (B64D) make up a comparatively small 6.4% share, indicating that much of the field's recent activity sits in general-purpose sensing and software rather than aviation-specific hardware.
US7633430B1, assigned to Rockwell Collins, claims a terrain awareness and warning system that suppresses false alerts using database information alongside radar returns. It is a representative example of the false-alert-suppression branch of terrain warning technology, a recurring theme across the dataset. Anyone filing in this specific sub-area should review its claim scope directly rather than relying on the abstract alone, since false-alert suppression logic is one of the more densely claimed technical routes in this field.
Based on the technology composition breakdown, aircraft-specific equipment claims (B64D) and wireless-network-fed terrain updates carry thinner relative density than the core navigation, radar and data-processing classes. Non-aircraft adaptations of terrain-awareness logic also appear less densely claimed. These are not guarantees of easy allowance, but they are areas where the claim space looks less occupied than the field's navigation and processing core.
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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.