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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/vehicle-to-grid-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-08-31 · downloaded from the live page
Patent landscape · Vehicle-to-GridVehicle-to-Grid Patents: Mapping the Leaders, the Technology Mix and the Open Claim Space
- 57.3% of all 572 records sit with just five assignees, so a handful of portfolios set the terms for anyone filing bidirectional charging or dispatch claims.
- Filings peaked in 2021 at 66 and fell to 31 by 2024, a 53% drop over that span — the clearest signal yet that the core wireless-transfer claim space is filling up.
- H02J covers 68.5% of records while G06Q (business/dispatch logic) and H01M (battery/cell integration) sit at just 5.6% each — the commercial and storage-integration layers are comparatively open.
572
Published Records
57%
Top-5 Share of All Records
-53%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (66 records) with 2024 (31) — 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 572 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··8 min readSourced from Patsnap Eureka
Overview
What the vehicle-to-grid patent record actually shows
Vehicle-to-grid (V2G) patenting sits at the intersection of two much larger fields: power grid management (frequency regulation, dispatch, load forecasting) and electric vehicle propulsion and charging. The 572 records in scope were pulled using a search string that requires both a V2G-specific term — vehicle-to-grid, vehicle grid integration or bidirectional vehicle charging — and a grid-operations term, so the set is deliberately narrow to filings where the two disciplines actually meet in the claims, not every EV charging patent or every grid patent in isolation.
Coverage runs from 2015 through the 2026-08-31 cut-off. Because publication lags filing by roughly 18 months, the most recent one to two years in any chart will understate real filing activity; 2024 is the last year that can be read as a complete picture.
Filing activity and technology mix, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
The data
Filing trends and technology composition
Two views of the same 572-record set: how filing volume moved year over year, and which IPC subclasses the claims actually sit in. Because a single record can carry several IPC classes, the composition shares below add to more than 100% of the record total.
Filing trend, 2017-2026
Annual filings rose from 27 in 2017 to a peak of 66 in 2021, then declined to 31 by 2024 — a 53% fall over that three-year window. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continued decline.
Technology composition by IPC subclass
H02J (power supply and grid systems) appears in 68.5% of the 572 records and B60L (electric vehicle propulsion) in 48.3%, confirming that most filings combine grid-side control with vehicle-side propulsion or charging hardware. H01F (magnetics/transformers, 23.6%) reflects the wireless power transfer cluster that dominates the most-cited records; G06Q (business/dispatch data processing) and H01M (batteries/cells) each sit at only 5.6%, marking them as comparatively thin layers relative to the hardware-heavy core.
Shares are the percentage of the 572 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.
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The most-cited records and a representative filing
Representative filing
US20070282495A1 — System and method for assessing vehicle to grid (V2G) integration
UNIVERSITY OF DELAWARE
A method for calculating power available for sale from an electric vehicle to an electric power market on a grid includes determining maximum DC power available from the electric vehicle; determining an electrical conversion efficiency related to a conversion of DC power from the electric vehicle to AC power; accounting for a time period in which the DC power is available from the electric vehicle; and calculating the power available for sale from the electric vehicle. A method of assessing economic value of a vehicle to grid arrangement includes calculating revenue from peak power, spinning reserves and regulation services against the associated costs.Filed by the University of Delaware, dated 2007-12-06 — one of the earliest filings to frame V2G as an economic dispatch calculation rather than purely a power-electronics problem.
Most-cited records in this dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20100277121A1 | Wireless energy transfer between a source and a vehicle | 1,008 |
| 2 | US20100164296A1 | Wireless energy transfer using variable size resonators and system monitoring | 691 |
| 3 | US20100237709A1 | Resonator arrays for wireless energy transfer | 618 |
| 4 | US20120256494A1 | Tunable wireless energy transfer for medical applications | 611 |
| 5 | US8035255B2 | Wireless energy transfer using planar capacitively loaded conducting loop resonators | 570 |
| 6 | US20100141042A1 | Wireless energy transfer systems | 568 |
| 7 | US20100259110A1 | Resonator optimizations for wireless energy transfer | 565 |
| 8 | US20130057364A1 | Resonator enclosure | 557 |
| 9 | US20100264747A1 | Wireless energy transfer converters | 551 |
| 10 | US20100076615A1 | Systems, devices and methods for electricity provision, usage monitoring, analysis, and enabling improvements… | 547 |
Citation counts inside a searched corpus favour older filings that have had more time to accumulate citations — read these as signals of influence on the wireless power transfer sub-field, not as a ranking of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the concentration and citation patterns mean for filing strategy
The numbers point to a field with a dense, well-defended core in wireless power transfer and grid-frequency control, and thinner claim coverage in the commercial and storage-integration layers built on top of it.
Concentration
57.3% / 328 of 572
top 5 assignees' combined share
A small top tier holds most of the claim space
Five assignees account for 328 of the 572 records in scope — 57.3% of the field. The leader alone holds 177 records, more than five times the fifth-place total of 31. New entrants filing broad V2G claims are likely to run into this cluster's prior art regardless of which sub-area they target.
Assignee ranking, 100 companies
Momentum
66 → 31, -53%
2021 to 2024 filing change
The peak has passed, but the picture isn't simple decline
Filings rose steadily from 27 in 2017 to a 2021 peak of 66, then fell 53% to 31 by 2024. That drop lines up with the wireless-transfer core becoming heavily claimed by a small set of assignees — later entrants have less room to file broad claims in the same space.
2025-2026 figures incomplete due to publication lag
Technology mix
68.5% H02J, 48.3% B60L
share of 572 records
Grid-side and vehicle-side claims dominate; software and storage layers are thin
H02J and B60L together anchor most filings, while G06Q (dispatch/business logic) and H01M (battery integration) sit at just 5.6% each of the 572 records. That gap suggests the control-software and storage-integration layers built on top of the hardware core are comparatively open.
IPC subclass shares, record-level, sum exceeds 100%
Citation core
1,008 citations, top record
US20100277121A1
The most-cited records cluster around wireless energy transfer
The five most-cited records in this dataset are all wireless energy transfer patents, one carrying 1,008 citations. That citation weight reflects an early, foundational cluster rather than current activity — treat it as a map of influence on later filings, not a guide to where filing is happening now.
Most-cited records table
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to vehicle-to-grid patent landscape, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who holds the ground, and where the gate sits for new entrants
The ranked leaders hold most of the volume, and three names show the tightest co-filing relationship in the dataset — a signature of a single foundational research group whose patents keep getting extended together.
Leader
177 records
top-ranked assignee
One assignee holds nearly a third of the top-5 total
The leading assignee's 177 records sit well ahead of second place, and more than five times the count at fifth place (31). That gap means freedom-to-operate searches in this space should start with the leader's portfolio before anything else.
Assignee ranking, 572 records in scope
Co-filing core
108 shared records
strongest co-assignee pair
A tight three-way inventor cluster drives the wireless-transfer core
The strongest co-assignee pair shares 108 records, and a second pair from the same group shares 98 — evidence of a small, persistent inventor team whose work anchors the most-cited wireless energy transfer patents in this set.
10 co-assignee pairs identified
Long tail
10th place = 10 records
tenth-ranked assignee
Filing drops off sharply outside the top ten
The tenth-ranked assignee holds only 10 records, against 398 combined for the top ten (69.6% of all 572 records). Everyone else in the ranked field files in single digits — a long tail of entrants each testing narrow claims rather than building broad portfolios.
Top 10 combined, 69.6% of 572 records
Recent-year filing momentum by top assignee
| Assignee | Recent year | YoY |
|---|---|---|
| WiTricity Corp | 0 | — |
| KESLER MORRIS P | 0 | — |
| HALL KATHERINE L | 0 | — |
| KUSNDRE B | 0 | — |
| SOLJACIC MARIN | 0 | — |
| KARALIS ARISTEIDIS | 0 | — |
| CAMPANELLA ANDREW J | 0 | — |
| Toyota Jidosha KK (Toyota Motor Corporation) | 0 | -100% |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this next
The dataset points to a mature hardware core and a thinner software/storage layer. The next steps depend on whether the goal is freedom-to-operate, portfolio building, or tracking a specific competitor.
Run a freedom-to-operate check against the leading portfolios
With 57.3% of records held by five assignees, any new bidirectional-charging or dispatch filing should be checked against the leader's 177-record portfolio and the co-filing cluster behind the most-cited wireless-transfer patents before drafting claims.
Search assignee portfolios in Eureka →Explore the under-claimed dispatch and storage-integration layers
G06Q and H01M each cover only 5.6% of the 572 records, well below the hardware-heavy core. That gap is a reasonable starting point for claims combining fleet dispatch logic or battery-aware control with V2G hardware.
Map white space in Eureka →Track filing momentum past the 2024 data horizon
2025 and 2026 filings are still incomplete due to publication lag. Revisit the trend once those years fill in before concluding the field is shrinking.
Set up a monitoring alert in Eureka →Source: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about vehicle-to-grid patents
One assignee leads the ranked field with 177 records, well ahead of the rest of the top five, which combine for 328 records — 57.3% of all 572 records in scope. That leader's portfolio, plus a tightly linked co-filing cluster behind several of the most-cited wireless energy transfer patents, effectively sets the boundaries for freedom-to-operate analysis in this space. Anyone filing broad V2G hardware claims should expect to run into this group's prior art first.
Filings grew from 27 in 2017 to a peak of 66 in 2021, then fell 53% to 31 by 2024. That is a real decline over a measured three-year window, but 2025 and 2026 figures are still incomplete because publication typically lags filing by about 18 months, so it is too early to call this a continued slowdown. The safest reading is that the earliest, broadest wireless-transfer claims have already been filed, pushing later entrants toward narrower claims.
H02J (power supply and grid systems) appears in 68.5% of the 572 records and B60L (electric vehicle propulsion) in 48.3%, meaning most filings combine grid-side control logic with vehicle-side hardware. H01F (magnetics and transformers), present in 23.6% of records, reflects the wireless power transfer cluster that also produces the most-cited patents in this dataset. Because records can carry multiple IPC classes, these shares add up to more than 100% of the record total.
The IPC composition shows G06Q (business and dispatch data processing) and H01M (battery and cell integration) each at only 5.6% of the 572 records, far below the hardware-dominant core. That suggests claims combining fleet-level dispatch pricing, battery-degradation-aware control, or aggregated load forecasting with V2G hardware face less crowded prior art than pure wireless-transfer or grid-frequency claims. Confirming this requires a targeted freedom-to-operate search rather than relying on the aggregate composition alone.
US20070282495A1, filed by the University of Delaware and dated 2007-12-06, claims a method for calculating the power an electric vehicle can sell to a grid market, covering the DC-to-AC conversion efficiency calculation, the time window the power is available, and the resulting economic value from services like peak power, spinning reserves and regulation. It is one of the earliest filings to frame V2G primarily as an economic dispatch calculation rather than a power-electronics design. It does not block hardware-level bidirectional charging circuits, only the specific dispatch-value calculation method it claims.
Answers are grounded in the same dataset. Derived from a Patsnap search on Vehicle-to-Grid Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.