EV Charging Connector Patent Landscape 2026
EV Charging Connector Patent Landscape in 2026
Toyota Motor Corporation leads a moderately concentrated field of 6,002 patent families, holding a commanding position among the top hundred filers. Annual filing volume has plateaued near its 2022 peak, with the field still expanding on a multi-year basis though annual output has eased from that high point.
Toyota leads a moderately concentrated field with a clear tier gap
Toyota Motor Corporation sits at the top of the Ing. h.c. F. Porsche AG at 163 patent families. The top five filers — Toyota, Porsche, Phoenix Contact E-Mobility, Kiekert, and Hyundai Motor — together account for 30% of the combined output of the hundred largest filers.
Below Toyota there is a compact second tier of European automotive and connector specialists (Porsche, Phoenix Contact E-Mobility, Kiekert, Audi) and a Korean OEM cluster (Hyundai, Kia), all in the 100–165 patent family range. A broader third tier of OEMs and suppliers sits between 40 and 90 patent families, keeping the field competitive but clearly stratified.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Toyota Motor Corporation | 491 | |
| 2 | Dr. Ing. h.c. F. Porsche AG | 163 | |
| 3 | Phoenix Contact E-Mobility GmbH | 149 | |
| 4 | Kiekert AG | 126 | |
| 5 | Hyundai Motor Company | 121 | |
| 6 | Audi AG | 117 | |
| 7 | Honda Motor Co., Ltd. | 109 | |
| 8 | ABB E-mobility BV | 103 | |
| 9 | GM Global Technology Operations LLC | 90 | |
| 10 | Bayerische Motoren Werke AG | 87 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Volkswagen AG | 83 | |
| 12 | Ford Global Technologies LLC | 70 | |
| 13 | Sanyo Electric Co., Ltd. | 64 | |
| 14 | Nissan Motor Co., Ltd. | 63 | |
| 15 | TE Connectivity Solutions GmbH | 55 | |
| 16 | AutoStore Technology AS | 51 | |
| 17 | Emerging Automotive LLC | 49 | |
| 18 | Mercedes-Benz Group AG | 43 | |
| 19 | Jaguar Land Rover Limited | 42 | |
| 20 | dcbel Inc. | 41 |
Toyota’s depth across EV propulsion (B60L) and power supply (H02J) sub-classes, combined with a recent +95% filing momentum, indicates an intent to extend its position into next-generation charging architectures. The European tier’s connector-hardware focus (H01R) signals differentiation through physical interface IP rather than system-level charging control.
Filing counts for 2024–2025 are understated due to publication lag and should not be interpreted as a slowdown beyond the plateau already observed from the 2022 peak. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity plateaued after a 2022 peak; propulsion systems dominate the technology mix
The annual trend chart and technology composition chart together reveal a maturing field where volume has stabilised and the dominant technical theme is vehicle-side charging integration rather than connector hardware alone.
Annual filing trend
Annual filings grew steadily from 533 in 2017 to a peak of 885 in 2022, then eased to 790 in 2023. The 2024 and 2025 bars are subject to publication lag and undercount actual activity; the 2026 figure of 9 reflects only the earliest-published applications of that year. The multi-year trajectory remains positive relative to the 2017 baseline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (Electric vehicle propulsion) is the dominant branch by a wide margin, reflecting that charging-connector patents are predominantly claimed within vehicle-side charging system contexts. H02J (Power supply and grid systems) and H01R (Connectors and current collectors) form a secondary tier, showing meaningful but smaller coverage of grid interaction and physical connector design. Branches such as H01M (Batteries), B60K (Vehicle propulsion and drive), and G06Q (Business and commerce) are present at low share, indicating adjacent technical coverage that remains sparse relative to the core.
↗ 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.
EV Charging Connector with Air Cooling, EV Chargin…
An electric vehicle (EV) charging connector comprises a charging cable. The charging cable comprises charging lines configured to carry charging current and at least one air tube. The contact element is connected to the charging cable and is the galvanic contact interface to a car inlet; and each air tube is configured to lead an air stream directly to the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Management of electric power demand in electric ve… | 372 |
| 2 | Power grid load management for plug-in vehicles | 369 |
| 3 | Self Propelled Electric Vehicle Recharging Trailer | 265 |
| 4 | Autonomous system for unmanned aerial vehicle land… | 257 |
| 5 | Mechanically removable wireless power vehicle seat… | 239 |
| 6 | Charge/discharge control apparatus | 234 |
| 7 | Methods and systems for an integrated charging sys… | 203 |
| 8 | Methods and Systems for Automatic Electric Vehicle… | 185 |
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 — lifecycle stage, concentration, collaboration networks, and geographic coverage — shape the strategic context for any team entering or expanding in EV charging connector IP.
Field is at plateau maturity, not early-growth
Annual filings have plateaued near the 2022 peak of 885 patent families per year, placing this field in a mature stage. New entrants face a crowded core around B60L and H02J. Differentiation through adjacent branches — connector hardware detail (H01R), battery integration (H01M), or smart-grid business logic (G06Q) — offers more defensible space than re-contesting the saturated propulsion-control core.
Lifecycle: MaturityTop tier is reachable but Toyota’s lead is substantial
The top five filers hold 30% of the hundred largest filers’ combined output, with Toyota alone contributing 491 patent families — more than three times the third-ranked player. The second tier (100–165 patent families) is populated by well-resourced European OEMs and connector specialists, limiting fast entry into top rankings. A focused strategy in a narrower sub-domain (e.g., connector locking mechanisms or wireless charging integration) is more feasible than broad-front competition.
Moderate concentrationHyundai–Kia–Myongji form the most active co-filing cluster
The most active co-filing pair is Hyundai Motor and Kia, with 97 jointly filed patent families, the largest collaboration link in the dataset. Both also co-file with Myongji University (23 co-filings each), indicating a structured OEM–academia alliance for fundamental charging research. Toyota co-files across four partners — AutoNetworks Technologies, Sumitomo Wiring Systems, Sumitomo Electric Industries, and Toyota Industries — each with 11–12 co-filings, reflecting a supplier-network model. Teams without established co-development relationships face a structural disadvantage in filing pace.
OEM–academic alliancesChina and the US are the dominant filing jurisdictions
China leads all jurisdictions in patent-record coverage, followed by the United States, with Europe (EPO) in a distant third position. Germany, India, Japan, and South Korea each show meaningful but smaller coverage. The China-first filing pattern reflects both domestic market scale and the presence of Chinese OEMs and charge-point operators in the corpus. Teams seeking broad protection should prioritise China, US, and EPO as the minimum viable jurisdictional footprint.
China · US · EPO coreGo 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 |
|---|---|---|
| Hyundai Motor Company | Kia Corporation | 97 |
| Hyundai Motor Company | Myongji University Industry and Academia Cooperation Foundation | 23 |
| Kia Corporation | Myongji University Industry and Academia Cooperation Foundation | 23 |
| Toyota Motor Corporation | AutoNetworks Technologies, Ltd. | 12 |
| Toyota Motor Corporation | Sumitomo Wiring Systems, Ltd. | 12 |
| Toyota Motor Corporation | Sumitomo Electric Industries, Ltd. | 12 |
| Toyota Motor Corporation | Toyota Industries Corporation | 11 |
| Toyota Motor Corporation | Fujitsu Ten Limited | 6 |
| Hyundai Motor Company | Sungkyunkwan University Industry-Academic Cooperation Foundation | 6 |
| Hyundai Motor Company | Yura Corporation Co., Ltd. | 3 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Toyota accelerates while European specialists diverge in momentum
The top two ranked players illustrate two contrasting strategic postures: Toyota is deepening its position with accelerating filings, while Porsche’s recent output has contracted sharply from its earlier level.
Toyota Motor Corporation
Toyota leads the ranking with 491 patent families, concentrated in B60L (EV propulsion, sub-classes 50 and 11) and H02J 7 (battery charging power supply), reflecting a system-level charging architecture strategy. Recent filing momentum is +95% versus the prior three-year period, signalling active expansion rather than consolidation. Co-filing relationships with Sumitomo Wiring Systems, AutoNetworks Technologies, and Sumitomo Electric Industries reinforce a vertically integrated approach to connector system IP.
patent families: 491Dr. Ing. h.c. F. Porsche AG
Porsche ranks second with 163 patent families, focused on B60L 53 (conductive charging for EVs) and H02J 7, indicating an emphasis on high-power DC charging system design consistent with performance-vehicle charging requirements. However, recent filing momentum has declined sharply at –86% versus the prior three-year period, suggesting a strategic pullback or consolidation phase. The gap between Porsche and Toyota is substantial and widening under current trajectories.
patent families: 163| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Toyota Motor Corporation | 86 | ▲ +95% |
| Dr. Ing. h.c. F. Porsche AG | 9 | ▼ -86% |
| Phoenix Contact E-Mobility GmbH | 18 | ▼ -55% |
| Kiekert AG | 50 | ▲ +108% |
| Audi AG | 29 | ▼ -15% |
| Hyundai Motor Company | 25 | ▼ -37% |
| Honda Motor Co., Ltd. | 27 | ▲ +50% |
Under-served adjacent branches worth monitoring
Several IPC branches sit at low share relative to the dominant B60L core, representing technically adjacent areas where the patent density is sparse enough to allow more defensible positioning for focused entrants.
G06Q · Business, commerce and administrative data processing
G06Q appears at low share within this corpus, despite the commercial relevance of billing, authentication, and roaming protocols for public charging networks. As charging networks scale and interoperability requirements tighten (driven by standards such as ISO 15118 and OCPP), IP covering payment flows, reservation logic, and energy-service contracts becomes strategically valuable. The sparse coverage here relative to the hardware-dominant core suggests an opening for software and platform-oriented players — though the technical barrier is lower and freedom to operate should be verified carefully before filing.
Search this in Eureka →H01M · Batteries, cells and fuel cells
H01M coverage is present but at low share, reflecting that battery-side interface IP — cell balancing communications through the connector, thermal management integration at the connector interface, and state-of-health diagnostics signalling — is less densely covered than charging-system control IP. For teams working on bidirectional (V2G/V2H) charging, the connector’s role as a battery-management interface is technically significant and relatively underexplored in the filing record. Entry requires deep electrochemistry and connector thermal design competence, and should be validated against existing H01M and H01R combination filings.
Search this in Eureka →How leading filers differ by technology route
Strength of each leader across the main technology routes.
| Player | B60L 53 · Electric vehicle propulsion | B60L 11 · Electric vehicle propulsion | H02J 7 · Power supply & grid systems | H01R 13 · Connectors & current collectors | B60L 50 · Electric vehicle propulsion |
|---|---|---|---|---|---|
| Toyota Motor Corporation | Strong · 129 | Strong · 192 | Strong · 180 | Absent | Strong · 212 |
| Phoenix Contact E-Mobility GmbH | Strong · 102 | Moderate · 40 | Absent | Strong · 114 | Absent |
| Dr. Ing. h.c. F. Porsche AG | Strong · 104 | Moderate · 45 | Strong · 53 | Moderate · 41 | Absent |
| Kiekert AG | Strong · 109 | Absent | Absent | Strong · 76 | Absent |
| Audi AG | Strong · 84 | Moderate · 28 | Moderate · 30 | Moderate · 36 | Absent |
| Hyundai Motor Company | Strong · 77 | Moderate · 25 | Strong · 44 | Absent | Emerging · 15 |
Frequently asked questions
The dataset contains 6,002 patent families in scope for EV charging connectors, covering global filings across all major jurisdictions.
Toyota Motor Corporation leads with 491 patent families, well ahead of the second-ranked Dr. Ing. h.c. F. Porsche AG at 163 patent families. Toyota’s recent filing momentum is +95% versus the prior three-year period.
China has the highest patent-record coverage, followed by the United States and Europe (EPO). Germany, India, Japan, and South Korea also show meaningful filing activity. A minimum viable protection footprint should cover China, the US, and EPO.
The field is in a maturity stage. Annual filings peaked at 885 in 2022 and have eased since, reaching 790 in 2023. The multi-year volume is still well above the 533 filings recorded in 2017, but annual output has plateaued rather than continued climbing. The 2024 and 2025 figures are understated due to publication lag.
Hyundai Motor and Kia have the most active co-filing relationship with 97 jointly filed patent families. Both also co-file with Myongji University (23 co-filings each). Toyota co-files across four supplier partners — AutoNetworks Technologies, Sumitomo Wiring Systems, Sumitomo Electric Industries, and Toyota Industries — each with 11 to 12 co-filings.
G06Q (business and commerce data processing, covering billing, authentication, and roaming) and H01M (batteries and fuel cells, covering battery-interface diagnostics and V2G integration) are both present at low share relative to the dominant B60L core, making them relatively sparse adjacent branches worth evaluating for focused IP development.
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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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