Wireless Power Transfer for Microgrids Patent Landscape
The wireless power transfer for microgrids patent space is in a growth phase, with a 145% rise in filings over the recent three-year window versus the prior three-year period, though annual volume eased from its 2022 peak. UT Battelle LLC leads a moderately concentrated field where the top five filers account for 46% of the hundred largest filers’ combined total, and US-based applicants dominate filings.
UT Battelle leads a moderately concentrated but still-nascent field
UT Battelle LLC holds the top position with 8 patent families, well ahead of Transportation IP Holdings LLC at 5 and InductEV Inc at 4, establishing a clear first tier among the top-ranked applicants.
The top five filers — UT Battelle LLC, Transportation IP Holdings LLC, InductEV Inc, Capactech Ltd, and Shanghai Jiao Tong University — collectively represent 46% of the hundred largest filers’ combined total, indicating moderate concentration with meaningful room for challengers to establish positions.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | UT Battelle LLC | 8 | |
| 2 | Transportation IP Holdings LLC | 5 | |
| 3 | InductEV Inc | 4 | |
| 4 | Capactech Ltd | 3 | |
| 5 | Shanghai Jiao Tong University | 2 | |
| 6 | Voice Life Holdings Ltd | 2 | |
| 7 | Strong Force EE Portfolio 2022 LLC | 2 | |
| 8 | Altered Power AS | 2 | |
| 9 | Mailam Engineering College | 2 | |
| 10 | Hasselt University | 2 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | IMEC VZW (Interuniversity Microelectronics Centre) | 2 | |
| 12 | Hatchtank LLC | 2 | |
| 13 | EV Innovations LLC | 1 | |
| 14 | Hamilton Sundstrand Corporation | 1 | |
| 15 | Strong Force TP Portfolio 2022 LLC | 1 | |
| 16 | RTX Corporation | 1 | |
| 17 | National Institute of Technology Jamshedpur | 1 | |
| 18 | Nandha College of Technology | 1 | |
| 19 | Toyota Motor North America Inc | 1 | |
| 20 | Francis Xavier Engineering College | 1 |
The leader’s emphasis on both grid-integration (H02J) and electric-vehicle propulsion (B60L) patents suggests that the dominant intellectual-property strategy bridges static microgrid infrastructure and dynamic EV charging, a dual focus that new entrants will need to contend with or differentiate from.
The most recent 18–24 months of filing data are understated due to publication lag; apparent activity in 2025–2026 will increase as applications publish. 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
Annual filings rose sharply from near zero in 2017 to a peak of 11 in 2022, then eased, while the overall three-year growth rate of 145% confirms the field is still expanding on a multi-year basis. Technology composition is led by power-supply and grid-systems claims, with EV propulsion and power-conversion circuitry forming a substantial second tier.
Annual filing trend
Activity was negligible through 2019, then accelerated sharply through 2022’s peak of 11 families. Post-2022 annual figures appear lower but remain above early-period levels; treat 2024–2026 numbers as incomplete due to publication lag.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) is the dominant IPC branch, reflecting the core grid-integration mandate of the technology. B60L (electric vehicle propulsion) and H02M (power conversion) together form a strong secondary cluster, pointing to EV charging as the primary application use case within microgrid contexts.
↗ 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.
A system and a method for wireless power sharing i…
The disclosure relates to a system for wireless power sharing in a microgrid system comprising one or more portable and transportable energy storage units comprising means for wireless power transfer of energy to or from one or more electrical power generator in the microgrid system; the means for wireless power transfer is adapted to transfer energy to or… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Wireless power system | 58 |
| 2 | Multi-Scale Optimization Framework for Smart Energ… | 42 |
| 3 | System and method for vehicle system charging | 9 |
| 4 | System and method for a charging station | 5 |
| 5 | 一种直流电源接入交流电源的复合电路及其应用 | 5 |
| 6 | Underwater data centers with biodiversity surveill… | 4 |
| 7 | Underwater data center systems with an energy stor… | 3 |
| 8 | Wireless power system | 3 |
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 field’s structure means for R&D investment decisions
With 52 patent families and a 145% three-year growth rate, the field is entering early mainstream from an exploratory base, but key structural gaps remain open. The following observations frame where investment risk is highest and lowest.
Early growth stage with eased annual momentum
The lifecycle evidence places this field in Growth: the recent three-year filing window sits 145% above the prior three-year window. However, annual volume has eased from its 2022 peak of 11 families per year, and the absolute corpus of 52 patent families remains small by industrial-technology standards. This combination — strong multi-year trajectory, modest absolute depth — is characteristic of a field that has passed initial proof-of-concept but has not yet reached sustained commercial build-out.
Growth · post-2022 peakModerate concentration with a clear first-tier gap
UT Battelle LLC at 8 patent families is meaningfully ahead of the next two filers at 5 and 4 respectively, creating a visible first-tier gap. The top five filers account for 46% of the hundred largest filers’ combined total, leaving over half of ranked activity distributed across a long tail of smaller players — many of which entered only recently. The competitive position of the top applicant is therefore defensible but not yet decisively locked-in.
Moderate concentrationNo co-applicant activity detected in the evidence
The collaboration evidence shows no recorded co-applicant filings in the dataset. This is notable given that microgrid wireless power transfer sits at the intersection of utility infrastructure, power electronics, and communications — domains that in adjacent fields typically attract consortium filings. The absence of observable co-filing may reflect the early stage of the field or data coverage limits; it does not confirm that partnerships are absent from the broader ecosystem.
Evidence pendingUS-dominated filings with limited international spread
The United States accounts for 30 of the patent records, making it the clear primary jurisdiction by a wide margin. India ranks second with 8 records, followed by China, Europe (EPO), and WIPO (PCT) at 3 each. The limited PCT and EPO coverage suggests that most current applicants are not yet pursuing broad international protection strategies, which could indicate either early-stage commercialization plans or a US-centric market focus — leaving non-US jurisdictions relatively open.
US-dominantGo 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
UT Battelle and Transportation IP Holdings lead; InductEV and Capactech are new-entrant challengers
The top two filers are established US entities with grid and energy-system backgrounds, while the next tier is composed entirely of new entrants whose recent filing momentum signals active portfolio-building.
UT Battelle LLC
UT Battelle LLC holds 8 patent families, the largest portfolio in the field. Its technology focus spans B60L 53 (EV charging), H02J 50 (wireless power supply), and H02J 7 (battery charging via grid), indicating a strategy that covers both the power-transfer hardware and the grid-integration interface. Momentum data classifies UT Battelle as a new entrant in the recent window, meaning all 5 of its recent families were filed without a prior-period baseline — consistent with a concentrated, relatively recent R&D push rather than a long-standing program.
patent families: 8InductEV Inc
InductEV Inc holds 4 patent families, all filed in the recent window with no prior-period baseline, making it a new entrant with an exclusively forward-looking portfolio. Its technology focus concentrates on B60L 53 and B60L 55 (dynamic and static EV propulsion charging) and H02J 7, indicating a specialization in in-motion or opportunity-charging applications within microgrid-adjacent EV infrastructure. This narrower focus differentiates it from UT Battelle’s broader grid-integration scope.
patent families: 4| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| UT Battelle LLC | 5 | ▲ new entrant |
| Transportation IP Holdings LLC | 2 | ▲ new entrant |
| InductEV Inc | 3 | ▲ new entrant |
| Capactech Ltd | 3 | ▲ new entrant |
| Voice Life Holdings Ltd | 2 | ▲ new entrant |
| Strong Force EE Portfolio 2022 LLC | 1 | ▲ new entrant |
Control, data-processing, and communications branches are under-served relative to core power-supply claims
The dominant H02J and B60L branches account for the bulk of records, leaving several technically adjacent IPC classes with low coverage. These under-served branches represent areas where novel claims could be staked with limited direct competition, though entry paths and commercial readiness vary.
G05B · Control and regulating systems
With only 5 patent records and a 4% share among the top IPC branches, control-system claims for wireless power transfer in microgrids are sparse relative to the hardware-layer dominance of H02J. Microgrid controllers managing dynamic load balancing, fault detection, and power-flow arbitration between wirelessly coupled nodes represent a technically plausible gap: the hardware to transfer power exists, but the supervisory control logic that makes it grid-safe and standards-compliant is under-patented. IMEC VZW is the primary filer in this space; others wishing to build defensible positions in grid-control integration face limited prior art to design around.
Search this in Eureka →H04L · Digital information transmission
Only 4 patent records cover digital communications protocols in the context of wireless power transfer for microgrids, representing a 3% share. Secure, low-latency communications between power-transmitting and power-receiving nodes — including authentication, demand-response signaling, and grid-edge IoT coordination — are engineering requirements for any commercial deployment but are currently addressed by very few filings. Voice Life Holdings Ltd is among the few filers touching this branch. The adjacency to both H02J grid-systems work and G16Y IoT processing (1 record) suggests that communications-layer claims could be staked with limited overlap against existing portfolios.
Search this in Eureka →How leading applicants differ across power, propulsion, control, and communications routes
Route coverage across the main technology branches in the current evidence set.
| Player | H02J 7 · Power supply & grid systems | B60L 53 · Electric vehicle propulsion | H02J 50 · Power supply & grid systems | H02J 3 · Power supply & grid systems | H02M 1 · Power conversion (AC/DC etc.) |
|---|---|---|---|---|---|
| UT Battelle LLC | Strong · 8 | Strong · 8 | Strong · 8 | Absent | Absent |
| Transportation IP Holdings LLC | Strong · 5 | Moderate · 2 | Absent | Strong · 3 | Absent |
| Capactech Ltd | Strong · 2 | Strong · 3 | Strong · 2 | Absent | Strong · 3 |
| InductEV Inc | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
| Altered Power AS | Strong · 2 | Strong · 2 | Strong · 2 | Strong · 2 | Absent |
| Shanghai Jiao Tong University | Absent | Absent | Strong · 2 | Strong · 2 | Strong · 2 |
Frequently asked questions
The evidence covers 52 patent families in scope for this topic globally.
UT Battelle LLC holds the largest portfolio with 8 patent families, ahead of Transportation IP Holdings LLC at 5 and InductEV Inc at 4.
The field is in a Growth lifecycle stage: recent three-year filings are 145% above the prior three-year window. Annual volume peaked at 11 families in 2022 and has eased since, though recent years are further understated by publication lag.
The United States leads with 30 patent records, followed by India with 8, and China, Europe (EPO), and WIPO (PCT) each with 3. International coverage outside the US is currently limited.
H02J (power supply and grid systems) is dominant with 51 records. B60L (electric vehicle propulsion) follows with 27 records and H02M (power conversion) with 18 records, reflecting a primary focus on EV charging applications within microgrid contexts.
The under-served branches include G05B (control and regulating systems, 5 records), H04L (digital information transmission, 4 records), G05F (electric/magnetic variable control, 5 records), and G06Q (business and commerce data processing, 4 records). Control-layer and communications-protocol claims in particular have low prior-art density relative to the hardware-layer dominance of H02J filings.
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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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