Vehicle-to-Grid System Patent Landscape 2026
Vehicle-to-Grid System Patent Landscape in 2026
The vehicle-to-grid (V2G) patent field spans 1,122 families and is still expanding on a multi-year basis, with recent-window filings 91% above the prior three-year period, though annual volume has eased from its 2022 peak. Activity is moderately concentrated, with automakers, power-electronics specialists, and technology conglomerates competing across bidirectional charging, grid integration, and wireless power transfer.
Sustainable Energy Technologies leads a moderately fragmented field
Sustainable Energy Technologies Inc holds the top position with 38 patent families, followed closely by Toyota Jidosha KK and Toyota Motor North America Inc (35 each), Delta Electronics Inc (29), and Honda Motor Co Ltd (28). The top five filers collectively account for 21% of the combined total of the hundred largest filers, indicating that no single player dominates outright.
The field has a clear first tier of energy-specialist and automotive incumbents, but the gap between the leader and the second-ranked group is narrow — Toyota’s two entities together surpass the top applicant by count, and challengers such as Huawei (26), Dell (25), and Beta Air (23) compress the mid-tier further. This structure suggests the competitive frontier is still being actively contested.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Sustainable Energy Technologies Inc | 38 | |
| 2 | Toyota Jidosha KK | 35 | |
| 3 | Toyota Motor North America Inc | 35 | |
| 4 | Delta Electronics Inc | 29 | |
| 5 | Honda Motor Co Ltd | 28 | |
| 6 | Huawei Technologies Co Ltd | 26 | |
| 7 | Dell Products LP | 25 | |
| 8 | Beta Air LLC | 23 | |
| 9 | Huawei Digital Power Technologies Co Ltd | 19 | |
| 10 | Qualcomm Inc | 18 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Nanjing Chervon Industry Co Ltd | 17 | |
| 12 | Audi AG | 14 | |
| 13 | Hydro-Quebec | 14 | |
| 14 | Hyundai Motor Co Ltd | 13 | |
| 15 | TIAX LLC | 13 | |
| 16 | Guangzhou Power Supply Bureau Guangdong Power Grid Co Ltd | 13 | |
| 17 | Raytheon Company | 12 | |
| 18 | Honor Device Co Ltd | 12 | |
| 19 | Volvo Car Corporation | 11 | |
| 20 | Hyundai Mobis Co Ltd | 11 |
The presence of automotive OEMs (Toyota, Honda, Audi, Hyundai, Volvo), power-electronics firms (Delta Electronics, Huawei Digital Power), and technology companies (Qualcomm, Dell) signals that V2G is now a cross-industry battleground, with no single sector having locked in a decisive positional advantage.
Filings from 2025 and 2026 are understated due to typical patent publication delays of 18–24 months; apparent softness in those years should not be read as a real decline in inventive activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth is strong; power-supply and EV propulsion dominate the technology mix
The annual filing trend and technology composition charts together reveal a field that has grown rapidly since 2019 and is anchored by a small set of core IPC classes, with a long tail of adjacent branches offering thinner coverage.
Annual filing trend
Filings rose sharply from 35 in 2017 to a peak of 224 in 2022, then moderated to 187 in 2023 and 197 in 2024. The 2025 and 2026 figures (119 and 14 respectively) are almost certainly understated due to publication lag and should not be read as a structural decline. The 91% recent-window growth confirms that the multi-year trajectory remains firmly upward.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) is by far the dominant branch, reflecting the grid-integration core of V2G. B60L (Electric vehicle propulsion) and H02M (Power conversion) form a secondary tier. Branches such as H01M (batteries), G06Q (business and commerce data processing), G01R (measurement), H02H (protective circuits), and H01F (magnets and transformers) each carry relatively few records, marking them as under-served adjacent areas within the broader landscape.
↗ 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.
Vehicle-to-grid system with power loss compensation
A vehicle-to-grid system connected to a power grid includes a first vehicle group of one or more vehicles connected to the power grid, a second vehicle group of one or more vehicles connected to the power grid, and a vehicle-to-grid controller. The vehicle-to-grid controller causes each vehicle from the second vehicle group to supply electrical power to the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Wireless power transfer for chargeable devices | 556 |
| 2 | Wireless power and data transfer for electronic de… | 327 |
| 3 | An integrated dual-output grid-to-vehicle (G2V) an… | 204 |
| 4 | System and method for determining and balancing st… | 204 |
| 5 | Methods and systems for an integrated charging sys… | 203 |
| 6 | Bidirectional power converter for balancing state … | 201 |
| 7 | System and method for balancing state of charge am… | 164 |
| 8 | Integrated dual-output grid-to-vehicle (G2V) and v… | 153 |
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 investment decisions
Four structural observations — maturity stage, concentration dynamics, collaboration patterns, and geographic spread — shape where incremental R&D investment is most likely to find defensible white space.
Growth phase with easing annual peak
The lifecycle evidence places V2G squarely in the Growth stage. Recent three-year filings are 91% above the prior three-year window, confirming multi-year expansion. Annual volume has eased from its 2022 high, but publication lag makes the most recent years appear softer than the underlying inventive activity warrants. New entrants and fast-ramping incumbents are still reshaping positions.
Growth stageModerate concentration with a compressed mid-tier
The top five filers account for 21% of the hundred largest filers’ combined total — moderate rather than high concentration. The narrow gap between the leader (38 families) and the second and third positions (35 each) means the top rank is contestable. A dense mid-tier from six through twenty further limits the ability of any single player to define the agenda unilaterally.
Fragmented top-tierIntra-group co-filing is the primary collaboration pattern
The most active co-filing relationship in the corpus is between Toyota Motor North America Inc and Toyota Jidosha KK, which share two jointly filed families. Cross-company or cross-sector co-filing is not prominently evidenced in the current data, suggesting that most players are pursuing independent IP strategies rather than open consortia at this stage.
Limited cross-org co-filingUS and China are near-parity lead offices; Europe is a significant secondary market
The United States leads jurisdiction coverage with 428 patent records, followed closely by China at 421. Europe (EPO) accounts for 161 records and WIPO PCT filings add 97, indicating that leading applicants are pursuing broad international protection. India (74 records) is an emerging third-tier jurisdiction worth monitoring. Absent or thin coverage in some markets may create freedom-to-operate opportunities for regional entrants.
US–China duopolyGo 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 | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Sustainable Energy Technologies and Toyota Motor North America lead by volume and trajectory
The two highest-momentum players are both classified as new entrants in the recent measurement window, suggesting their current family counts were accumulated rapidly and their competitive positions are still consolidating.
Sustainable Energy Technologies Inc
With 38 patent families and a trajectory flagged as a new entrant ramp, Sustainable Energy Technologies Inc has built its position almost entirely within the recent filing window. Its technology focus is concentrated in H02J 7 (power supply and grid systems, 37 sub-class records) and B60L 58 and B60L 50 (electric vehicle propulsion), indicating deep specialization in bidirectional charging management rather than broader EV systems.
families: 38Toyota Motor North America Inc
Toyota Motor North America Inc holds 35 patent families and is also classified as a new entrant in the recent window, meaning its filings have concentrated heavily in the current period. Its primary technical focus spans H02J 3 (grid-interconnected power supply, 23 records), B60L 53 (EV charging, 20 records), and H02J 7 (17 records), reflecting a grid-integration and charging-infrastructure orientation. Combined with Toyota Jidosha KK’s parallel 35-family portfolio and the two entities’ documented co-filing relationship, the Toyota group represents the largest aggregate position in the corpus.
families: 35| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Sustainable Energy Technologies Inc | 34 | ▲ new entrant |
| Toyota Motor North America Inc | 32 | ▲ new entrant |
| Huawei Technologies Co Ltd | 7 | ▼ -63% |
| Delta Electronics Inc | 15 | ▲ +36% |
| Honda Motor Co Ltd | 6 | ▼ -62% |
| Beta Air LLC | 11 | ▬ 0% |
| Huawei Digital Power Technologies Co Ltd | 15 | ▲ new entrant |
| Nanjing Chervon Industry Co Ltd | 13 | ▲ new entrant |
Under-served branches adjacent to the V2G core
Several IPC branches sit at the periphery of the dominant H02J and B60L cluster with relatively thin patent coverage. These represent observations of relative sparsity; the two highlighted below also carry plausible technical relevance and realistic entry paths.
H02H · Protective circuit arrangements
H02H accounts for just 31 patent records in the corpus — roughly 1% of total branch coverage — despite fault protection and islanding prevention being fundamental to safe bidirectional grid connection. As V2G deployments scale and grid codes tighten, arc-fault detection, overcurrent protection, and anti-islanding circuitry specific to bidirectional power flow represent a technically plausible and relatively open filing area. Entrants with expertise in power-electronics protection could establish early positions here.
Search this in Eureka →G06Q · Business, commerce & admin data processing
G06Q carries 64 patent records in the corpus — approximately 2% of total branch coverage — despite energy-trading, demand-response pricing, and aggregator-platform logic being critical commercial enablers for fleet-scale V2G. The sparse coverage in this branch, relative to the engineering-heavy H02J core, suggests that software-defined business models and transactive-energy protocols remain less claimed. Technology companies and energy-market platforms entering from adjacent spaces may find this branch relatively open.
Search this in Eureka →How leading applicants differ across technology routes
Strength of each leader across the main technology routes.
| Player | H02J 7 · Power supply & grid systems | B60L 53 · Electric vehicle propulsion | H02J 3 · Power supply & grid systems | B60L 55 · Electric vehicle propulsion | H02M 3 · Power conversion (AC/DC etc.) |
|---|---|---|---|---|---|
| Toyota Motor North America Inc | Strong · 17 | Strong · 20 | Strong · 23 | Strong · 13 | Absent |
| Sustainable Energy Technologies Inc | Strong · 37 | Moderate · 10 | Emerging · 7 | Absent | Absent |
| Honda Motor Co Ltd | Absent | Strong · 14 | Strong · 21 | Strong · 14 | Absent |
| Beta Air LLC | Strong · 23 | Strong · 19 | Absent | Moderate · 5 | Absent |
| Huawei Technologies Co Ltd | Strong · 29 | Strong · 16 | Absent | Absent | Absent |
| Audi AG | Strong · 13 | Strong · 10 | Absent | Moderate · 5 | Absent |
| Delta Electronics Inc | Strong · 16 | Absent | Absent | Absent | Strong · 11 |
Frequently asked questions
The evidence covers 1,122 patent families in the V2G space globally.
Sustainable Energy Technologies Inc leads with 38 patent families, followed by Toyota Jidosha KK and Toyota Motor North America Inc at 35 each, then Delta Electronics Inc at 29, and Honda Motor Co Ltd at 28.
Annual filings grew from 35 in 2017 to a peak of 224 in 2022, then moderated to 187 in 2023 and 197 in 2024. The recent three-year window is 91% above the prior three-year period, confirming multi-year growth. The 2025 and 2026 figures are understated due to publication lag.
The United States and China are near-equal lead offices at 428 and 421 patent records respectively. Europe (EPO) follows at 161, WIPO PCT at 97, and India at 74, indicating that leading filers are pursuing broad multinational protection.
H02J (Power supply and grid systems) is the dominant branch by a wide margin, followed by B60L (Electric vehicle propulsion) and H02M (Power conversion). These three branches together account for the large majority of patent-record coverage in the corpus.
H02H (Protective circuit arrangements) and G06Q (Business and commerce data processing) are among the branches with the thinnest relative coverage — 31 and 64 patent records respectively — despite their technical and commercial relevance to safe and commercially viable V2G deployments. G01R (Electric and magnetic measurement) and H01M (Batteries and fuel cells) are also relatively sparse adjacent branches.
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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.
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