Automotive Radar Patent Landscape 2026
Automotive Radar Patent Landscape in 2026
The automotive radar patent space is heavily concentrated, with Toyota Motor Corporation alone commanding the largest single-applicant position among 10,686 patent families in scope, and the top five filers collectively accounting for 56% of the hundred largest filers’ combined total. The field has reached maturity — annual volume plateaued near its 2022 peak and has eased since, though the multi-year window still reflects meaningful accumulated activity.
Toyota leads a highly concentrated field with a commanding margin over all challengers
Toyota Motor Corporation holds the top position in the Denso Corporation (958 patent families) and Nissan Motor (932 patent families) occupy second and third place, followed by Honda Motor (828 patent families) and Yinwang Intelligent Technologies (491 patent families).
The top five filers’ share of the hundred largest filers’ combined output stands at 56%, indicating that the competitive weight of this space is heavily concentrated in a small set of Japanese OEMs and their Tier-1 partners. A meaningful gap separates the first-tier cluster from mid-ranked players such as Subaru (426 patent families) and Astemo (350 patent families).
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Toyota Motor Corporation | 3,382 | |
| 2 | Denso Corporation | 958 | |
| 3 | Nissan Motor Co Ltd | 932 | |
| 4 | Honda Motor Co Ltd | 828 | |
| 5 | Yinwang Intelligent Technologies Co Ltd | 491 | |
| 6 | Subaru Corporation | 426 | |
| 7 | Hitachi Astemo Ltd | 350 | |
| 8 | Mazda Motor Corporation | 326 | |
| 9 | Mitsubishi Electric Corporation | 221 | |
| 10 | Renault SA | 214 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Suzuki Motor Corporation | 208 | |
| 12 | NIO Technology (Anhui) Co Ltd | 180 | |
| 13 | Hitachi Ltd | 163 | |
| 14 | Sony Group Corporation | 154 | |
| 15 | Panasonic Automotive Systems Co Ltd | 144 | |
| 16 | Huawei Technologies Co Ltd | 124 | |
| 17 | Hitachi Construction Machinery Co Ltd | 123 | |
| 18 | Apollo Intelligent Driving (Beijing) Technology Co Ltd | 103 | |
| 19 | Panasonic Intellectual Property Corporation of America | 89 | |
| 20 | Panasonic Intellectual Property Management Co Ltd | 86 |
Toyota’s position, built primarily around hybrid/joint vehicle control and autonomous driving sub-systems, reflects decades of sustained R&D investment. For new entrants, displacing the leading cluster through volume alone is not a viable strategy; differentiation through underserved application domains or hardware-level radar signal processing is more realistic.
Filing counts for 2024 and especially 2025–2026 are under-counted due to patent publication lag and should not be interpreted as a real decline in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume plateaued at its 2022 peak; vehicle control dominates but radar-specific branches remain comparatively sparse
Two charts together illustrate the pace of activity and the technology mix: the annual trend reveals a field that expanded sharply through 2022 and has since eased, while the IPC composition shows that patent activity clusters heavily around vehicle control systems rather than core radar hardware.
Annual filing trend
Filings grew from 900 records in 2017 to a peak of 1,615 in 2022, then eased to 1,317 in 2023. Figures for 2024 onward reflect publication lag and are materially under-counted; any apparent drop in those years should not be read as a real decline in inventive activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60W (hybrid/joint vehicle control) dominates the IPC mix by a wide margin, reflecting that most automotive radar patents are filed in the context of broader ADAS and autonomous driving system claims. G05D (control of non-electric variables), G08G (traffic control systems), and G06V (image/video recognition) follow at a distance. Core radar hardware branches — notably G01S (radar, sonar and positioning) and H01Q (antennas) — hold comparatively smaller shares, pointing to an emphasis on system-level integration over sensor-level innovation.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Target detection method based on fusion of vision,…
A target detection method based on fusion of vision, lidar and millimeter wave radar comprises: obtaining original data detected by a camera, a millimeter wave radar, and a lidar, and synchronizing the millimeter wave radar, the lidar, and the camera in time and space; performing a calculation on the original data detected by the millimeter wave radar… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Asset system control arrangement and method | 1,776 |
| 2 | Accident avoidance system | 1,258 |
| 3 | Vehicular restraint system control system and meth… | 928 |
| 4 | Accident avoidance system | 733 |
| 5 | System for obtaining vehicular information | 700 |
| 6 | Method and arrangement for mapping a road | 700 |
| 7 | Recording of operational events in an automotive v… | 695 |
| 8 | Method and arrangement for communicating between v… | 657 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D strategy
Four structural observations — maturity stage, concentration, collaboration patterns, and geographic distribution — define the strategic context for any team entering or expanding in automotive radar.
Field has reached maturity with volume easing from its 2022 peak
Annual filing volume plateaued near its 2022 peak of 1,615 records and has since eased, consistent with a field transitioning from rapid growth to consolidation. The multi-year window still reflects substantial accumulated activity across 10,686 patent families in scope. R&D investment in this space now competes against an established prior-art base, raising the bar for claim differentiation.
Mature fieldTop five filers hold 56% of the hundred largest filers’ combined output
The five leading applicants — Toyota Motor Corporation, Denso Corporation, Nissan Motor, Honda Motor, and Yinwang Intelligent Technologies — collectively dominate the ranking. The tier gap between Toyota (3,382 patent families) and second-place Denso (958 patent families) is particularly stark. New entrants face a dense prior-art landscape in core ADAS control domains and are better positioned to pursue hardware-level or application-specific differentiation.
High concentrationNissan–Renault and Toyota–Denso are the most active co-filing pairs
The most frequent co-applicant pairing is Nissan Motor and Renault, with 228 jointly filed patent families, reflecting the long-standing Renault–Nissan Alliance’s joint technology development. Toyota and Denso follow with 166 co-filed families, consistent with their established Tier-1 integration relationship. Toyota also co-files with Advics (13 families), Aisin (13 families), J-Quad Dynamics (11 families), Aisin AW (10 families), and Continental Automotive (8 families), indicating a broad supplier ecosystem anchored around a single OEM.
Alliance-drivenUnited States is the primary protection jurisdiction; China and Europe are secondary
The United States leads all jurisdictions, followed by Europe (EPO) and China. Germany and India also appear as notable secondary filing destinations. Japan, despite being home to most of the leading applicants, shows comparatively fewer records in this dataset, suggesting many Japanese-origin families are captured through US and EPO filings rather than domestic-only routes. Teams evaluating freedom-to-operate should prioritise US and EPO clearance.
US-dominantGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Nissan Motor Co Ltd | Renault SA | 228 |
| Toyota Motor Corporation | Denso Corporation | 166 |
| Denso Corporation | J-Quad Dynamics Inc | 27 |
| Mazda Motor Corporation | NXP Semiconductors NV | 14 |
| Toyota Motor Corporation | Advics Co Ltd | 13 |
| Toyota Motor Corporation | Aisin Corporation | 13 |
| Toyota Motor Corporation | J-Quad Dynamics Inc | 11 |
| Toyota Motor Corporation | Aisin AW Co Ltd | 10 |
| Toyota Motor Corporation | Continental Automotive GmbH | 8 |
| Denso Corporation | Advics Co Ltd | 8 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Toyota and Denso lead on vehicle control; Nissan and Honda pull back while Subaru accelerates
The top two applicants share a strong focus on B60W hybrid/joint vehicle control sub-classes, but their recent momentum differs meaningfully. Several mid-tier Japanese OEMs show diverging trajectories.
Toyota Motor Corporation
Toyota holds 3,382 patent families, the largest position in the corpus by a wide margin. Its technology emphasis sits firmly in B60W 30 (1,777 records) and B60W 50 (1,088 records) — vehicle control system operations — alongside G05D 1 autonomous control (919 records). Recent filing momentum is strongly positive at +56% versus the prior three-year period, underscoring continued aggressive investment rather than a coasting posture.
patent families: 3,382Denso Corporation
Denso holds 958 patent families and focuses on B60W 30 (581 records), B60W 50 (386 records), and G08G 1 traffic control systems (285 records), closely mirroring Toyota’s control-system emphasis as its primary Tier-1 partner. Recent momentum is +26% versus the prior three-year period — solid growth that keeps Denso well ahead of other challengers in active output.
patent families: 958| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Toyota Motor Corporation | 1,173 | ▲ +56% |
| Denso Corporation | 293 | ▲ +26% |
| Nissan Motor Co Ltd | 18 | ▼ -92% |
| Honda Motor Co Ltd | 244 | ▼ -34% |
| Subaru Corporation | 151 | ▲ +20% |
| Huawei Technologies Co Ltd | 148 | ▼ -32% |
| Mazda Motor Corporation | 28 | ▼ -83% |
| Mitsubishi Electric Corporation | 59 | ▼ -30% |
Under-served adjacent branches worth monitoring: radar hardware and medical sensing
While system-level vehicle control dominates the IPC composition, several adjacent branches hold materially lower patent densities relative to their potential technical relevance to automotive radar. These are observations of relative sparsity; they are worth tracking but require further validation before treating them as confirmed investment opportunities.
G01S · Radar, sonar & positioning
Despite being the most directly relevant IPC class for core radar hardware — covering waveform design, signal processing, FMCW architectures, and target detection algorithms — G01S accounts for only 1,777 records and a 5% share of the composition, well below the dominant vehicle-control classes. This relative sparsity may reflect that most applicants file radar innovations under system-level ADAS claims (B60W) rather than sensor-level claims. Teams focused on raw radar hardware, antenna design, or signal processing IP may find more differentiated claim space here.
Search this in Eureka →A61B · Diagnosis and surgery (in-cabin vital-sign sensing)
A61B appears in the corpus with 122 records — a small but non-trivial presence that reflects emerging work on using automotive radar for in-cabin occupant monitoring, vital-sign detection, and driver drowsiness assessment. This branch sits at the intersection of radar sensing and medical-grade measurement, an area with regulatory complexity but growing OEM interest driven by safety mandates. The low record count suggests limited entrenched prior art, though technical and regulatory barriers are real.
Search this in Eureka →How leading applicants differ by technology route across vehicle control sub-classes
Strength of each leader across the main technology routes.
| Player | B60W 30 · Hybrid/joint vehicle control | B60W 50 · Hybrid/joint vehicle control | G05D 1 · Control of non-electric variables | G08G 1 · Traffic control systems | B60W 40 · Hybrid/joint vehicle control |
|---|---|---|---|---|---|
| Toyota Motor Corporation | Strong · 1,777 | Strong · 1,088 | Strong · 919 | Moderate · 693 | Moderate · 497 |
| Denso Corporation | Strong · 581 | Strong · 386 | Moderate · 164 | Moderate · 285 | Moderate · 262 |
| Nissan Motor Co Ltd | Strong · 791 | Moderate · 162 | Emerging · 105 | Strong · 453 | Moderate · 165 |
| Honda Motor Co Ltd | Strong · 493 | Strong · 302 | Moderate · 191 | Moderate · 153 | Moderate · 168 |
| Subaru Corporation | Strong · 301 | Moderate · 123 | Moderate · 78 | Absent | Moderate · 134 |
| Mazda Motor Corporation | Strong · 237 | Moderate · 99 | Absent | Moderate · 96 | Moderate · 100 |
| Huawei Technologies Co Ltd | Strong · 148 | Strong · 88 | Strong · 100 | Strong · 75 | Strong · 96 |
Frequently asked questions
The corpus covers 10,686 patent families in scope globally.
Toyota Motor Corporation is the leading filer with 3,382 patent families, more than three times the volume of the second-ranked applicant, Denso Corporation (958 patent families).
The field is assessed as mature. Annual filing volume peaked in 2022 and has eased since, though the multi-year accumulated base remains large. This is consistent with a space transitioning from rapid growth toward consolidation.
The United States leads all jurisdictions. Europe (EPO) and China are the next most significant filing destinations, followed by Germany and India.
Toyota Motor Corporation shows the strongest recent momentum at +56% versus the prior three-year period. Denso Corporation follows at +26%, and Subaru Corporation at +20%. By contrast, Nissan Motor (-92%), Mazda (-83%), and Honda Motor (-34%) have pulled back sharply in recent filings.
The Nissan Motor–Renault pair is the most active, with 228 co-filed patent families, reflecting the Renault–Nissan Alliance’s joint development programs. Toyota–Denso is the second most active pair at 166 co-filed families.
Ready to map your own automotive radar landscape?
Join 18,000+ innovators using PatSnap Eureka to map any technology landscape: search 2B+ patents and papers, surface key assignees, and generate a report like this in minutes.
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.