Wireless Power Transfer for EV Charging Patent Landscape
The wireless power transfer (WPT) for EV charging space is highly concentrated at the top, with a small cluster of technology specialists and one major automaker holding commanding positions. The field is in a Growth stage, with the recent multi-year window up 95% and two new entrants accelerating sharply, though publication lag means the most recent period is understated.
Auckland UniServices and WiTricity dominate a tightly held field
Auckland UniServices Ltd leads the applicant ranking with 166 patent records, followed immediately by WiTricity AI Tech LLC with 165 and Qualcomm Inc with 128 — the top three are effectively co-dominant and collectively define the technical frontier of inductive EV charging.
The top five filers account for 51% of the combined total across the hundred largest filers, a level of concentration that signals a mature oligopoly at the core of this space, with a pronounced tier gap between the top three and everyone below Qualcomm.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Auckland UniServices Ltd | 166 | |
| 2 | WiTricity AI Tech LLC | 165 | |
| 3 | Qualcomm Incorporated | 128 | |
| 4 | WiTricity Corporation | 88 | |
| 5 | Hyundai Motor Company | 63 | |
| 6 | Strong Force EE Portfolio 2022 LLC | 36 | |
| 7 | Capactech Ltd | 34 | |
| 8 | Utah State University | 27 | |
| 9 | Mojo Mobility Inc | 22 | |
| 10 | InductEV Inc | 21 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Access Business Group International LLC | 18 | |
| 12 | COVIC GRANT ANTHONY | 16 | |
| 13 | MYONGJI UNIV IND & ACAD COOPERATION FOUND | 15 | |
| 14 | The Regents of the University of Michigan | 14 | |
| 15 | BG NEGEV TECHNOLOGIES & APPLICATIONS LTD | 14 | |
| 16 | BOYS JOHN TALBOT | 12 | |
| 17 | Philips IP Ventures BV | 12 | |
| 18 | Lear Corporation | 11 | |
| 19 | EleapPower Ltd | 11 | |
| 20 | RES & BUSINESS FOUND SUNGKYUNKWAN UNIV | 11 |
The leaders’ positions reflect deep, sustained investment in wireless charging standards and system integration; late entrants face a dense blocking portfolio in power supply and EV propulsion control, the two dominant IPC classes.
Filings from approximately 2024–2026 are likely under-represented due to standard patent publication lag and should not be read as a ceiling on current activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volumes have recovered strongly since 2020; power-supply IPC classes dominate the technology mix
The annual filing trend and the IPC technology composition together reveal where competitive energy is focused and which adjacent branches remain relatively sparse.
Annual filing trend
Annual filings dipped sharply around 2019–2020, then rebounded into the 90–101 range from 2022 onward, reflecting the field’s Growth trajectory (95% recent-window increase). The 2025–2026 bars should be read as a floor, not a ceiling, given publication lag.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply & grid systems) and B60L (Electric vehicle propulsion) account for the overwhelming majority of classified records, establishing them as the field’s technical core. H02M (Power conversion), H01F (Magnets, inductors & transformers), and H04B (Transmission, general) are secondary clusters and represent areas where coverage is thinner relative to the two leaders.
↗ 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.
Systems and methods for operating a wireless power…
Systems and methods are described herein for facilitating the switching of a power transfer direction in wireless power transfer systems. A ground unit comprises: one or more power transfer coils configured for providing wireless power transfer on an inductive power transfer frequency band; one or more positioning coils configured to emit position data… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | System and method for powering or charging multipl… | 593 |
| 2 | Wireless energy transfer and continuous radio stat… | 477 |
| 3 | System and method for charging or powering devices… | 448 |
| 4 | Wireless power distribution and control system | 390 |
| 5 | Wireless energy transfer via coupled parasitic res… | 355 |
| 6 | Inductive power transfer apparatus | 347 |
| 7 | Network Based Energy Preference Service for Managi… | 298 |
| 8 | Multi power sourced electric vehicle | 281 |
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 strategy
Four structural dimensions — life-cycle maturity, concentration, collaboration patterns, and geographic spread — shape the entry and differentiation options available to new and existing participants.
Growth stage with a 95% multi-year uplift
The lifecycle evidence places this field in a Growth stage, with annual filings rising on a multi-year basis and a 95% increase recorded in the recent window. The 2019–2020 trough appears to have been a temporary disruption, not a structural decline. New entrants Strong Force EE Portfolio 2022 LLC and Capactech Ltd have entered with substantial recent activity, confirming that the field is still attracting new investment.
Growth · activeTop three hold near-equal positions; tier gap is steep below rank 4
Auckland UniServices (166 records), WiTricity AI Tech (165 records), and Qualcomm (128 records) are near-parity at the summit, making competitive differentiation at the top difficult without a distinct technical angle. The gap to rank 4 (WiTricity Corp, 88 records) and rank 5 (Hyundai Motor, 63 records) is notable. Entrants targeting power conversion or magnetics sub-classes face fewer blocking positions than those targeting the H02J core.
High concentrationHyundai–Kia and Auckland UniServices inventor networks are the strongest co-filing pairs
The most active co-filing relationship is Hyundai Motor Co and Kia, with 55 jointly filed records, reflecting tightly integrated automotive-OEM development. Auckland UniServices co-files frequently with named inventors Grant Anthony Covic (28 records) and John Talbot Boys (19 records), indicating that its portfolio is substantially inventor-driven. Hyundai also co-files with Myongji University (13 records) and Sungkyunkwan University (11 records), pointing to a structured industry-academic pipeline.
OEM–university tiesUS is the primary filing jurisdiction; India and EPO are secondary markets
The United States leads jurisdictional coverage by a wide margin, followed by India and Europe (EPO). WIPO PCT filings indicate applicants are actively seeking broad international protection. China, despite being a major EV market, shows comparatively limited filing activity in this corpus, which may represent either a portfolio gap or a scope artefact worth investigating.
US-centric · EPO secondaryGo 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 | 55 |
| COVIC GRANT ANTHONY | Auckland UniServices Ltd | 28 |
| BOYS JOHN TALBOT | Auckland UniServices Ltd | 19 |
| Hyundai Motor Company | Myongji University Industry-Academic Cooperation Foundation | 13 |
| Kia Corporation | Myongji University Industry-Academic Cooperation Foundation | 13 |
| Hyundai Motor Company | Sungkyunkwan University Industry-Academic Cooperation Foundation | 11 |
| Kia Corporation | Sungkyunkwan University Industry-Academic Cooperation Foundation | 11 |
| Hyundai Motor Company | Hyundai Autron Co., Ltd. | 2 |
| Hyundai Motor Company | 汉阳大学校产学协力团 | 2 |
| Kia Corporation | Hyundai Autron Co., Ltd. | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
WiTricity and Auckland UniServices lead on system IP; Capactech and Strong Force are the fastest-moving new entrants
The leading positions are held by technology specialists rather than pure OEMs, with Qualcomm as the principal exception. Momentum data shows the two incumbents have recent filing rates below their historical peaks, while two new entrants are building portfolios rapidly.
Auckland UniServices Ltd
Auckland UniServices holds 166 patent records — the top position in the ranking — concentrated in H02J power supply, H01F magnetics and inductors, and H02J50 wireless power supply. Its portfolio is built substantially on the work of named inventor-collaborators Covic and Boys, reflecting the University of Auckland’s foundational role in inductive power transfer research. Recent momentum is down 45% versus the prior period, suggesting the core platform portfolio is maturing rather than expanding.
patent records: 166Capactech Ltd
Capactech Ltd enters the ranking as a new entrant with 34 patent records, all filed recently, focused on B60L53 (EV charging propulsion), H02M1 (power conversion), and B60L55. Its new-entrant status and exclusive focus on EV-side power conversion positions it as a hardware-differentiated challenger in a sub-class where the dominant incumbents are less active. Its trajectory warrants monitoring as it builds out from a small but rapidly accumulated base.
patent records: 34| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Auckland UniServices Ltd | 12 | ▼ -45% |
| WiTricity Corporation | 13 | ▼ -58% |
| Hyundai Motor Company | 4 | ▼ -80% |
| Strong Force EE Portfolio 2022 LLC | 27 | ▲ new entrant |
| Capactech Ltd | 30 | ▲ new entrant |
Magnetics design, signal transmission, and measurement are under-served relative to the power-supply core
Several IPC branches adjacent to the dominant H02J and B60L classes show comparatively low patent-record counts, indicating relative sparsity that engineers targeting hardware differentiation may find worth examining.
H01F · Magnets, inductors & transformers
With 273 records, H01F is the third-largest branch but holds only an 8% share of the classified corpus — sparse relative to the H02J and B60L core. Coil geometry, core materials, and shielding design are foundational to charging efficiency and foreign-object detection, yet the filing density here is low. Applicants with magnetics manufacturing capability or materials expertise could find differentiated entry points, particularly in high-power and dynamic (in-motion) charging coil designs where existing coverage appears thin.
Search this in Eureka →H04B · Transmission (general)
H04B accounts for 109 records and roughly 3% of classified filings — a notable gap given that inter-vehicle and vehicle-to-grid communication is integral to adaptive charging control. Foreign-object detection, alignment feedback, and dynamic load negotiation all require reliable communication channels, yet this branch remains an adjacent area with low filing density compared to the power supply core. Applicants active in automotive communication standards or IoT protocols could find this a viable expansion route.
Search this in Eureka →How leading applicants differ across IPC technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | H02J 7 · Power supply & grid systems | H02J 50 · Power supply & grid systems | B60L 53 · Electric vehicle propulsion | B60L 11 · Electric vehicle propulsion | H01F 38 · Magnets, inductors & transformers |
|---|---|---|---|---|---|
| Qualcomm Incorporated | Strong · 273 | Moderate · 113 | Emerging · 33 | Strong · 186 | Moderate · 73 |
| Auckland UniServices Ltd | Strong · 129 | Strong · 65 | Moderate · 36 | Emerging · 21 | Strong · 73 |
| WiTricity Corporation | Strong · 76 | Strong · 77 | Strong · 68 | Emerging · 8 | Emerging · 15 |
| Hyundai Motor Company | Strong · 57 | Strong · 43 | Strong · 40 | Moderate · 16 | Absent |
| COVIC GRANT ANTHONY | Strong · 38 | Moderate · 17 | Moderate · 11 | Moderate · 9 | Strong · 27 |
| BOYS JOHN TALBOT | Strong · 28 | Moderate · 10 | Absent | Moderate · 9 | Strong · 21 |
Frequently asked questions
Auckland UniServices Ltd leads with 166 patent records, followed by WiTricity AI Tech LLC with 165 and Qualcomm Inc with 128. These three are near-equal at the top of the ranking and collectively dominate the field’s core IPC classes.
Yes. The lifecycle evidence places the field in a Growth stage, with a 95% increase in the recent multi-year filing window. Annual volumes have rebounded from a 2019–2020 trough to the 90–101 range in 2022–2024. The 2025–2026 data is under-counted due to publication lag and should be treated as a floor.
The United States is the dominant filing jurisdiction, followed by India and Europe (EPO). WIPO PCT is also significant, indicating applicants are seeking broad international coverage. China shows relatively limited filing activity in this corpus.
The strongest co-filing pair is Hyundai Motor Co and Kia, with 55 jointly filed records. Auckland UniServices co-files extensively with inventors Grant Anthony Covic (28 records) and John Talbot Boys (19 records). Hyundai also maintains academic partnerships with Myongji University (13 records) and Sungkyunkwan University (11 records).
H01F (Magnets, inductors & transformers) at 8% share and H04B (Transmission, general) at 3% share are the most notable adjacent branches with low relative filing density. H02J and B60L dominate the corpus, leaving coil design and communication protocols comparatively sparse.
Yes. Strong Force EE Portfolio 2022 LLC and Capactech Ltd are both flagged as new entrants with all of their filed records in the recent period — 36 and 34 patent records respectively. Capactech focuses on EV-side power conversion (H02M, B60L53), while Strong Force EE emphasizes grid-side power systems and AI-based models (H02J3, G06N).
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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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