Vehicle-to-Grid Renewable Integration Patent Landscape
Vehicle-to-Grid System for Renewable Integration Patent Landscape in 2026
The vehicle-to-grid (V2G) renewable integration space is in a growth phase, with filings expanding roughly 368% over the observed window and Toyota-affiliated entities holding the strongest cumulative position. Activity is moderately concentrated among automotive OEMs and specialist power-electronics firms, with meaningful participation from research institutions, leaving adjacent technology branches — particularly battery management and grid measurement — relatively sparse.
Toyota entities lead a moderately concentrated field with rising challengers
Toyota Jidosha KK ranks first with 20 patent records, followed by Toyota Motor North America Inc with 13 and Volvo Car Corp with 10, establishing a clear first tier of automotive incumbents.
The top five filers account for 29% of the combined total across the hundred largest filers, indicating moderate concentration — enough for Toyota to set directional precedent, but not so dominant that challengers such as TAE Technologies Inc (9 patent records) and Hyundai Mobis Co Ltd (7 patent records) face insurmountable gaps.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Toyota Jidosha KK | 20 | |
| 2 | Toyota Motor North America Inc | 13 | |
| 3 | Volvo Car Corp | 10 | |
| 4 | TAE Technologies Inc | 9 | |
| 5 | INESC TEC – Institute for Systems and Computer Engineering, Technology and Science | 7 | |
| 6 | Landis+Gyr Technology Inc | 7 | |
| 7 | Hyundai Mobis Co Ltd | 7 | |
| 8 | University of Maryland | 5 | |
| 9 | Epiroc Rock Drills AB | 4 | |
| 10 | Vestas Wind Systems A/S | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Analog Devices International Unlimited Co | 4 | |
| 12 | Ford Global Technologies LLC | 4 | |
| 13 | TOYOTA MOTOR ENG & MFG NORTH AMERICA INC | 3 | |
| 14 | Honda Motor Co Ltd | 3 | |
| 15 | Delta Electronics Inc | 3 | |
| 16 | Green Cubes Technology LLC | 3 | |
| 17 | National Institute of Technology Rourkela | 2 | |
| 18 | Nuvve Corp | 2 | |
| 19 | Delta Electronics (Shanghai) Co Ltd | 2 | |
| 20 | William H. Bender | 2 |
Toyota’s multi-entity presence across Toyota Jidosha KK, Toyota Motor North America Inc, and Toyota Motor Engineering & Manufacturing North America signals a coordinated portfolio strategy spanning. Japan and North America, which raises freedom-to-operate considerations for new entrants working in grid-integration and EV charging architectures.
The most recent 18–24 months of filings are under-represented due to typical patent publication lag; counts for 2025 and 2026 will increase as applications publish. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume surged from 2022; grid power systems dominate the technology mix
Two charts together reveal when activity accelerated and which IPC classes anchor the field. The filing trend shows the inflection point; the technology composition shows where technical effort is concentrated and where gaps remain.
Annual filing trend
Filings were negligible before 2018 and grew steadily through 2021, then jumped sharply to 35 patent records in both 2022 and 2023 before recording 33 in 2024. The 2025 and 2026 figures (22 and 7, respectively) are materially understated due to publication lag and should not be read as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) and B60L (Electric vehicle propulsion) together account for the large majority of records, confirming that grid-tie architecture and EV charging/discharging control are the core technical battlegrounds. H02M (Power conversion) is a meaningful secondary cluster. Branches such as G06Q (business and administrative data processing), H01M (batteries and fuel cells), G01R (electrical measurement), G05B (control systems), and G06N (AI-based computing) each hold very few records, flagging potential under-served areas.
↗ 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.
BIDIREKTIONALE LADEVORRICHTUNG, SYSTEM UND FAHRZEU…
The present invention relates to a compact-sized bidirectional charging device (100), particularly aimed at charging electric vehicles (4) under different AC or DC voltage modes. More specifically, the invention relates to a bidirectional charging device (100) comprising: an AC input (1), connectable to a power supply grid (2); an AC output (3) connectable… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | An integrated dual-output grid-to-vehicle (G2V) an… | 204 |
| 2 | Methods and systems for an integrated charging sys… | 203 |
| 3 | Integrated dual-output grid-to-vehicle (G2V) and v… | 153 |
| 4 | Ac/DC converter with three to single phase matrix … | 78 |
| 5 | Integrated dual-output grid-to-vehicle (G2V) and v… | 40 |
| 6 | Ac/DC converter with three to single phase matrix … | 31 |
| 7 | Power supply system and power conversion device | 30 |
| 8 | Distributed control of energy storage device charg… | 24 |
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 portfolio structure means for R&D investment decisions
The competitive structure, lifecycle stage, collaboration patterns, and jurisdiction footprint each carry distinct implications for teams deciding where to file, what to build, and with whom to partner.
Growth stage with sustained annual momentum
The lifecycle evidence classifies this field as Growth, with annual filings still rising and a 368% expansion over the observed window. The core H02J and B60L branches are filling in rapidly, meaning foundational grid-tie and EV-charging claims are increasingly crowded. Teams entering now should target differentiated sub-problems rather than broad platform claims.
Growth stageModerate concentration with an accessible challenger tier
The top five filers hold 29% of the hundred largest filers’ combined total — concentrated enough that Toyota sets architectural precedent, but open enough that TAE Technologies Inc (9 patent records), Hyundai Mobis Co Ltd (7 patent records), and INESC TEC (7 patent records) demonstrate that challengers and research institutions can build meaningful positions. New entrants with differentiated power-conversion or control-system IP have visible room to establish a presence.
Moderate concentrationCo-filing activity is nascent; Toyota North America and Toyota Jidosha lead
The only recorded co-applicant relationship is between Toyota Motor North America Inc and Toyota Jidosha KK (1 joint filing), reflecting intra-group coordination rather than cross-industry partnering. The absence of OEM–utility or OEM–grid-operator co-filings is a notable gap; teams exploring consortium-based IP strategies face little competitive pressure in the co-filing space today.
Nascent collaborationUS-centric filing with Europe and India as secondary markets
The United States leads jurisdiction coverage, followed by India and Europe (EPO). WIPO PCT filings indicate multi-territory pursuit for select applications, while China and Germany hold smaller shares. The relatively thin China coverage is notable given that country’s EV and grid-storage scale; it may represent a filing gap or a deliberate market assessment by current leaders.
US-led, India risingGo 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 |
|---|---|---|
| Toyota Motor North America Inc | Toyota Jidosha KK | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Toyota dominates through multi-entity coordination; TAE Technologies leads on power conversion
The two most differentiated positions belong to Toyota (grid integration and EV propulsion across three affiliated entities) and TAE Technologies Inc (power conversion and EV battery systems). All top filers show new-entrant momentum trajectories, reflecting the field’s recent inflection.
Toyota Jidosha KK
Toyota Jidosha KK holds 20 patent records, the largest single-entity position in the landscape, concentrated in H02J (Power supply and grid systems) and B60L (Electric vehicle propulsion). When combined with Toyota Motor North America Inc (13 patent records) and Toyota Motor Engineering & Manufacturing North America (3 patent records), the Toyota group’s aggregate position is the clear market anchor. All Toyota entities show a new-entrant momentum trend, consistent with the field’s post-2021 surge.
patent records: 20TAE Technologies Inc
TAE Technologies Inc holds 9 patent records with a distinct emphasis on H02M (Power conversion — AC/DC) and B60L (EV propulsion including battery management sub-classes B60L50 and B60L58), setting it apart from the OEM-centric H02J focus of the Toyota group and Volvo Car Corp. Its new-entrant momentum trend signals that its portfolio is built almost entirely within the recent growth window, making it a high-recency challenger worth monitoring for power-electronics claim breadth.
patent records: 9| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Toyota Motor North America Inc | 12 | ▲ new entrant |
| Volvo Car Corp | 8 | ▲ new entrant |
| Toyota Jidosha KK | 8 | ▲ new entrant |
| TAE Technologies Inc | 9 | ▲ new entrant |
| Hyundai Mobis Co Ltd | 7 | ▲ new entrant |
| Landis+Gyr Technology Inc | 5 | ▲ new entrant |
| Ford Global Technologies LLC | 2 | ▲ new entrant |
Under-served branches in battery management, grid measurement, and AI control
Several IPC classes adjacent to the dominant H02J and B60L core are sparsely populated relative to their technical relevance. These represent observations of relative sparsity; only those with a plausible technical connection and realistic entry path are highlighted as worth investigating.
G06Q · Business, commerce & administrative data processing
With 26 patent records and a 6% share of technology records, G06Q is the largest adjacent branch and covers the commercial and administrative layer of V2G — energy trading platforms, demand-response contracts, and revenue-sharing algorithms between EV owners and grid operators. This layer is essential for V2G market viability yet remains sparse relative to the hardware-heavy core. Teams with software or platform backgrounds could stake out IP in V2G billing, settlement, and flexibility-market participation without immediately competing with the OEM hardware portfolios.
Search this in Eureka →H01M · Batteries, cells & fuel cells
Only 19 patent records cover H01M (batteries and fuel cells), a 4% share, despite battery state-of-health being a central constraint in V2G dispatch decisions. The sparse coverage suggests that battery degradation modeling, second-life battery V2G integration, and fuel-cell-hybrid grid-support architectures are under-claimed. Vestas Wind Systems, which holds records in H01M alongside H02J, is the only wind-sector player engaging this branch — hinting that renewable-storage coupling within V2G remains an open area for specialist battery or fuel-cell firms.
Search this in Eureka →How leaders differ by technology route across grid, propulsion, and conversion
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | B60L 53 · Electric vehicle propulsion | H02J 7 · Power supply & grid systems | B60L 55 · Electric vehicle propulsion | B60L 58 · Electric vehicle propulsion |
|---|---|---|---|---|---|
| Toyota Motor North America Inc | Strong · 12 | Strong · 7 | Moderate · 6 | Strong · 7 | Moderate · 6 |
| Volvo Car Corp | Strong · 10 | Strong · 7 | Moderate · 4 | Strong · 8 | Moderate · 3 |
| Hyundai Mobis Co Ltd | Strong · 5 | Strong · 7 | Strong · 4 | Moderate · 3 | Moderate · 3 |
| Landis+Gyr Technology Inc | Strong · 5 | Strong · 4 | Strong · 3 | Strong · 4 | Absent |
| Toyota Jidosha KK | Strong · 9 | Moderate · 4 | Absent | Absent | Emerging · 1 |
| TAE Technologies Inc | Strong · 7 | Absent | Absent | Absent | Strong · 7 |
Frequently asked questions
The evidence set covers 158 patent families in scope for this topic globally.
Toyota Jidosha KK leads with 20 patent records, followed by Toyota Motor North America Inc (13) and Volvo Car Corp (10). The Toyota group’s combined multi-entity presence makes it the clear aggregate leader.
The United States leads with 66 patent records, followed by India (36), Europe via the EPO (24), and WIPO PCT filings (20). China and Australia each account for 6 records, indicating that protection outside the US and Europe is still thin relative to those markets’ EV and grid-storage scale.
The field is classified as Growth, with annual filings expanding approximately 368% over the observed window. Filing volume jumped sharply from 2022 onward. Recent-year figures for 2025 and 2026 are understated due to publication lag and do not reflect a real decline.
H02J (Power supply and grid systems) and B60L (Electric vehicle propulsion) dominate and are the most contested branches. Adjacent branches with far fewer records include G06Q (business and data processing), H01M (batteries and fuel cells), G01R (electrical measurement), G05B (control systems), and G06N (AI-based computing), each of which is sparsely populated relative to its technical relevance to V2G.
Co-filing activity is minimal. The only documented co-applicant relationship is a single joint filing between Toyota Motor North America Inc and Toyota Jidosha KK, which reflects intra-group coordination. No cross-industry partnerships between OEMs and utilities, grid operators, or renewable energy firms are recorded in the evidence.
Ready to map your own V2G patent 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.