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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/ev-charging-power-electronics-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Power Electronics & GridEV Charging Power Electronics Patents: Who Is Filing and Where the Claims Sit
- Filing has plateaued, not grown. The peak year so far is 2022 at 18 families, and the trend from 2017's 4 to 2026's partial 6 shows no clear upward slope since the midpoint.
- B60L and H02J dominate the claim space. 74 and 68 of 97 records respectively sit in vehicle propulsion and power supply/grid IPC subclasses, while adjacent digital and wireless control classes each hold single digits.
- Filing is US-led but India is a close second office. 39 records were filed at the USPTO against 22 at the Indian patent office, ahead of China's 12 and the EPO's 9 — a filing footprint worth checking before assuming US-only exposure.
97
Published Records
29%
Top-5 Share of All Records
+113%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (8 records) with 2024 (17) — 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 97 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this dataset covers
This landscape draws on 97 patent families published between 2015 and mid-2026 that combine electric vehicle charger, EV charging system or DC fast-charging terminology with claim language on bidirectional converters, power factor correction, charging protocols, thermal derating or vehicle-to-grid operation, restricted to the B60L53, H02J7 and H02M3 IPC groups. That combination narrows the corpus to the power-electronics core of EV charging rather than the broader charging-infrastructure or battery-chemistry literature.
Publication lags filing by roughly eighteen months, so the 2025 and 2026 figures in any trend line are undercounts of eventual filing activity, not a real drop-off. Family counts, used throughout this page instead of raw document counts, remove the distortion from continuation filings and multi-jurisdiction duplicates of the same invention.
Filing activity and technology composition, 2017-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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Data
Filing trend and technology composition
Two views of the same 97-family corpus: activity over time by publication year, and the IPC subclasses that carry the claim volume.
Filing trend, 2017-2026
Filings rose from 4 in 2017 to a peak of 18 in 2022, then held flat rather than continuing to climb; the partial 2026 count of 6 is an undercount because of publication lag rather than a genuine slowdown.
IPC subclass composition
B60L (74 records) and H02J (68 records) carry most of the claim weight, with H02M power-conversion claims present in 34 records. Digital transmission, control systems, wireless networking and data-processing classes each appear in single digits, marking them as adjacent rather than core to this corpus.
Shares are the percentage of the 97 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 EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Most-cited prior art and a recent representative filing
Representative recent filing
WO2026121508A1 — Electric vehicle charger entering electric vehicle discharge mode through internal battery, and operating method thereof
LG INNOTEK CO.,LTD.
Filed by LG Innotek and published 2026-06-11, this application describes an EV charger with a bidirectional converter that switches between charge mode (AC-to-DC from the grid) and discharge mode (DC-to-AC from the vehicle), paired with a charger communication controller that negotiates target voltage with the vehicle when grid power is unavailable.This is the most recent representative filing in the dataset and illustrates where vehicle-to-grid claim activity is heading rather than where the bulk of the corpus already sits.
Highest-cited records in the corpus
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20110077809A1 | Method and system for charging electric vehicles | 361 |
| 2 | US8154246B1 | Method and system for charging of electric vehicles according to user defined prices and price off-sets | 122 |
| 3 | US20130134935A1 | Medium voltage stand alone DC fast charger | 61 |
| 4 | US6204630B1 | Lightweight, compact, on-board, electric vehicle battery charger | 51 |
| 5 | US8473131B2 | Method and system for charging electric vehicles | 40 |
| 6 | US6087802A | Lightweight, compact, on-board electric vehicle battery charger | 40 |
| 7 | WO1997008803A1 | Lightweight, compact, on-board, electric vehicle battery charger | 23 |
| 8 | US20220332210A1 | Mobile electric vehicle charging station system | 21 |
| 9 | US20130193922A1 | Apparatus for discharging DC-link capacitor for electric vehicle charger | 21 |
| 10 | CN201388079Y | 一种混合动力汽车充电器 | 21 |
Citation counts favour older records simply because they have had more time to accumulate citations within the searched corpus; treat them as a measure of influence on subsequent filings, not of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. 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 EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers say about this field
Three read-outs from the filing trend, the IPC composition and the citation table, framed for a filing or freedom-to-operate decision.
Filing momentum
18 in 2022
peak year filings
Growth has flattened since the 2022 peak
The corpus grew from 4 families in 2017 to a peak of 18 in 2022, but the years since show no clear continuation of that climb. Combined with an 18-month publication lag, 2025-2026 figures should be read as pending rather than declining, but the flat trend line through the peak year is itself informative: this is not a field still accelerating.
Filing trend, 2017-2026
Claim concentration
74 & 68 of 97
records in B60L and H02J
Vehicle propulsion and grid-supply claims dominate
B60L and H02J together account for the large majority of records, meaning most claim language addresses the vehicle-side charging architecture and the grid-facing power supply rather than the power-conversion stage itself, where H02M appears in only 34 records. A filer targeting power-conversion topology specifically is working in a comparatively less crowded IPC lane within this corpus.
IPC subclass distribution
Filing geography
US 39 · India 22
leading receiving offices
US leads, but India is a substantial second office
39 records were filed at the USPTO, with India's patent office close behind at 22 and ahead of China's 12, the EPO's 9 and WIPO's 8 PCT filings. Any freedom-to-operate check limited to the US and China alone would miss a meaningful share of the documented filing activity in this corpus.
Receiving office distribution
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 ev charging power electronics, with the prior art for and against each one.
Co-filing activity
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Power Hydrant LLC | LEARY KEVIN WALTER | 1 |
Co-assignee pairing in this corpus is sparse: the strongest pair recorded appears only once, indicating that most filings in this dataset are made by a single assignee rather than through joint development arrangements.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Assignee activity and where filing has gone quiet
Recent-year momentum in this corpus is notably flat: several previously active assignees show zero filings in the latest year, some down from prior activity.
Momentum signal
0 in latest year
multiple assignees
Several tracked assignees have gone quiet
Assignees including Atomic Power, Landis+Gyr, EVE Energy Ventures, On-Bright Electronics, Hyundai Mobis and LS Electric all show zero filings in the latest tracked year in this corpus, with Landis+Gyr down 100% year-on-year. This pattern is consistent with the broader flat-to-declining trend rather than isolated to any one assignee.
Recent-year momentum by assignee
Filing footprint
97 families
across 6 receiving offices
Activity is spread rather than concentrated in a single office
With filings recorded across the USPTO, India, China, the EPO, WIPO and Australia, no single jurisdiction holds a majority of the corpus. That spread means competitive monitoring built around one or two offices will miss a meaningful share of the documented activity.
Receiving office distribution
Co-filing pattern
1 occurrence
strongest co-assignee pair
Joint filings are rare in this dataset
The most frequent co-assignee pairing in the corpus occurs only once, pairing an individual inventor with a corporate assignee. This suggests that development in this space, at least as reflected in the filing record, has proceeded largely through single-assignee programmes rather than cross-company collaboration.
Co-assignee pairs
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Atomic Power Corporation | 0 | — |
| Landis+Gyr | 0 | -100% |
| EVE ENERGY VENTURES INC | 0 | — |
| On-Bright Electronics | 0 | — |
| Hyundai Mobis Co., Ltd. | 0 | — |
| LS Electric Co., Ltd. | 0 | — |
| Power Hydrant LLC | 0 | — |
| General Electric Company | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this analysis
This page gives the shape of the field. Turning it into a filing or freedom-to-operate decision means going deeper on specific claims and assignees.
Check claim scope on the highest-cited records
The most-cited records in this corpus, several from the early 2010s, still anchor a large share of subsequent filings' prior-art citations. Reviewing their independent claims against any planned filing is a reasonable first step before drafting.
Explore in Patsnap EurekaMap the quiet assignees' existing portfolios
Zero recent-year filings from several previously active assignees does not mean their earlier claims have lapsed. Confirming current legal status before assuming freedom to operate in their claimed territory is worth the extra step.
Explore in Patsnap EurekaWatch the under-claimed protocol and thermal branches
Charging protocol negotiation, thermal derating logic and bidirectional fault handling all show thin representation relative to the core vehicle-propulsion and grid-supply claim volume. These are candidate areas for a first-mover filing strategy.
Explore in Patsnap EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on EV charging power electronics patents
This corpus of 97 families does not show one dominant assignee running away with the field; recent-year momentum data instead shows several previously active filers, including Atomic Power, Landis+Gyr, Hyundai Mobis and LS Electric, recording zero filings in the latest tracked year. The most-cited individual records, such as US20110077809A1 and US8154246B1, both address vehicle charging methods and predate the current wave of bidirectional and vehicle-to-grid filings. Anyone assessing ownership should look at both the historical citation leaders and the recent filer list, since they are not the same companies.
Filing volume rose from 4 families in 2017 to a peak of 18 in 2022, but the trend has been flat rather than climbing since that midpoint. Because publication typically lags filing by around eighteen months, the partial count of 6 for 2026 understates actual filing activity for that year and should not be read as a decline. Taken together, the honest read is a field whose filing rate has plateaued rather than one still accelerating.
The dataset combines search terms for electric vehicle chargers, EV charging systems and DC fast charging with claim language on bidirectional converters, power factor correction, charging protocols, thermal derating and vehicle-to-grid operation, restricted to IPC groups B60L53, H02J7 and H02M3. In practice this means 74 of 97 records touch vehicle propulsion claims (B60L) and 68 touch power supply and grid systems (H02J), with power conversion topology itself (H02M) appearing in only 34. Adjacent digital communication, wireless networking and control-system classes are present but minor, each under 10 records.
Relative to the dense B60L and H02J claim volume, several adjacent branches are thinly represented: charging protocol negotiation over wireless links, thermal derating control logic, bidirectional converter fault handling, and vehicle-to-grid billing or settlement data flows. These sit in IPC classes such as H04W, G05B and G06Q that each appear in single digits across the 97-family corpus. A first claim in these areas would need to tie the under-claimed function, such as fault detection during bidirectional mode switching, directly to the charger's power stage to avoid drafting purely software claims with weak enforceability.
The highest-cited records, led by US20110077809A1 at 361 citations and US8154246B1 at 122, are older filings that have simply had more years to accumulate citations within the searched corpus. High citation counts signal influence on how the field's claim language developed, not that the underlying technology remains commercially central today. When assessing current freedom-to-operate risk, recent filings with fewer citations, such as the 2026 LG Innotek application on bidirectional discharge mode, may carry more practical weight despite the lower count.
Answers are grounded in the same dataset. Derived from a Patsnap search on EV Charging Power Electronics covering 2015–2026, data cut-off 2026-07-31. 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.