EV Fast Charging for Marine Propulsion Patent Landscape
The patent space for EV fast charging applied to marine propulsion is early-stage and highly concentrated, with the top five filers controlling nearly three-quarters of activity among the hundred largest filers. Annual filings have grown sharply over the multi-year window, and nearly every ranked applicant entered the field recently, signaling a field still in formation.
NIO Tech Anhui leads a nascent, highly concentrated field
NIO Tech Anhui Co Ltd holds the top position with 7 patent families, followed by Fluid Power AI Inc with 5 and Power Hero Corp with 4. The ranking is short — only eleven distinct applicants appear among the top-ranked filers — confirming that this is a field in early formation rather than a mature competitive arena.
The top five filers account for 72% of the combined total among the ranked applicants visible in this query, a concentration level that is characteristic of an emerging technology where a handful of early movers have defined the initial filing landscape before broader industry participation.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | NIO Tech Anhui Co Ltd | 7 | |
| 2 | Fluid Power AI Inc | 5 | |
| 3 | Power Hero Corp | 4 | |
| 4 | Volvo Car Corporation | 3 | |
| 5 | Plug P2P Inc | 2 | |
| 6 | MERCEDES-BENZ RES & DEV NORTH AMERICA | 2 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 7 | ArvinMeritor Technology LLC | 2 | |
| 8 | NIO USA Inc | 1 | |
| 9 | Thompson Claiborn B | 1 | |
| 10 | GM Global Technology Operations LLC | 1 | |
| 11 | Abd Elmogaweed Hassan Khaled Salah | 1 |
NIO Tech Anhui’s lead, reinforced by the separate presence of NIO USA Inc, suggests that the NIO group has pursued the most systematic filing strategy to date. Challengers such as Fluid Power AI and Power Hero Corp are new entrants with momentum, meaning the current hierarchy is not yet entrenched.
The most recent 18–24 months of filings are subject to publication lag and likely undercount actual activity; the 2025–2026 figures in particular should be read as a floor, not a ceiling. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Sharp multi-year growth with electric-vehicle propulsion dominating the technology mix
Annual filing volume and the IPC branch breakdown together reveal both the pace of the field’s expansion and the degree to which it remains anchored in automotive EV charging frameworks rather than marine-specific engineering.
Annual filing trend
Filings were minimal from 2017 through 2020 (peaking at 5 families in 2017 then dipping), recovered strongly from 2022 onward, and reached 7 families in both 2023 and 2024. The 2025 figure of 3 and the 2026 figure of 0 reflect publication lag and should not be read as a slowdown. The multi-year growth rate stands at 400%, confirming that the field is in an active growth phase.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (electric vehicle propulsion) is the visible branch, appearing in all 33 patent families in scope, which confirms that most filings are adapting automotive EV charging architectures to marine contexts. H02J (power supply and grid systems) is the second most active branch, followed by H01M (batteries and fuel cells) and H02M (power conversion). Marine-specific branches such as vessel power management are absent, indicating that the field has not yet developed a dedicated IPC identity.
↗ 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.
Decentralized network for predictive selection of …
A device includes program instructions executable by one or more processors that, when executed, cause the one or more processors to perform operations. The operations include acquiring data indicative of a geometry of a charging feature of a vehicle for charging a battery of the vehicle and a rated power input for the battery of the vehicle. The operations… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Power systems and methods for electric vehicles | 24 |
| 2 | Authentication using electromagnet signal detection | 17 |
| 3 | Vehicle-based charging system for electric vehicles | 10 |
| 4 | Charging systems and methods for electric vehicles | 9 |
| 5 | Systems and methods for regulating charging of ele… | 8 |
| 6 | Systems and methods for regulating charging of ele… | 5 |
| 7 | Distributed on-demand elevated power in low power … | 4 |
| 8 | Systems and methods for monitoring and managing ba… | 2 |
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 patent structure means for R&D investment decisions
Four structural dimensions — maturity, concentration, collaboration, and geography — shape the risk and opportunity profile for an engineer or strategist evaluating entry into this space.
Growth stage: annual filings still rising on a multi-year basis
The lifecycle evidence classifies this field as Growth, driven by a 400% increase in recent filing volume. Annual output has been rising and the 2023–2024 period marks the highest sustained activity on record. Because early architectural patents are still being filed, there is meaningful room to establish claim positions before the field matures and prior art becomes denser.
Growth stageTop-heavy but not yet locked: new entrants are actively filing
The top five filers hold 72% of activity among the ranked applicants visible in this query, yet every challenger in the momentum data is classified as a new entrant. This combination — high headline concentration but an unstable roster — means the hierarchy is still contestable. A well-scoped filing program entered now can compete with existing leaders before the field crosses into a more defensive phase.
ContestableNo co-filing partnerships detected in the current evidence
The collaboration data returns no co-applicant relationships in this corpus, meaning all identified filings are sole-applicant submissions. The absence of visible joint filings may reflect the field’s immaturity — consortia and standards bodies have not yet organized formal collaborative R&D in this niche. It also leaves open the question of whether academic or industrial partnerships are being conducted under a single entity’s name.
Evidence pendingUnited States is visible in; international coverage is thin
The United States is the lead filing office with 20 patent records, followed by WIPO PCT with 7, Europe (EPO) with 2, and India with 2. Australia and Canada each show 1 record. The narrow geographic spread suggests that most applicants are not yet pursuing broad international protection, which may indicate either early-stage commercial focus or limited resources — and leaves non-US markets relatively open for new filers.
US-centricGo 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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
NIO Tech Anhui Co Ltd
NIO Tech Anhui holds 7 patent families, the largest individual position in this space. Its technology focus spans power conversion (H02M3), battery management (B60L58), and grid-side charging systems (H02J7), suggesting a systems-level approach that covers the charger, the battery interface, and the power supply architecture. The NIO group’s combined presence — through the separate NIO USA Inc entity — reinforces its lead. Momentum data does not flag NIO Tech Anhui specifically as a new entrant, implying it has held an active position across multiple filing periods.
7 patent familiesFluid Power AI Inc
Fluid Power AI Inc holds 5 patent families and is classified as a new entrant with recent momentum, having filed 3 families in the recent window. Its technology emphasis is concentrated in EV propulsion (B60L58), battery cell management (H01M50), and electrical measurement (G01R31) — a combination that points toward intelligent battery monitoring as a differentiating angle. Power Hero Corp, the third-ranked filer with 4 patent families and also a new entrant, focuses tightly on charging interface standards (B60L53) and grid-side power supply (H02J7), suggesting a complementary rather than competing positioning.
5 patent familiesFrequently asked questions
The corpus currently stands at 33 patent families in scope. This is a small, early-stage field; by comparison, mature EV charging segments contain tens of thousands of families. The small size means each new filing can meaningfully shift the assignee snapshot.
NIO Tech Anhui Co Ltd leads with 7 patent families, ahead of Fluid Power AI Inc with 5 and Power Hero Corp with 4. The NIO group’s total position is reinforced by the separate NIO USA Inc entity, which holds an additional family in the ranking.
The lifecycle evidence classifies this field as Growth. Annual filings are still rising on a multi-year basis, with a 400% growth rate in the recent window. The 2023 and 2024 years each recorded 7 patent families — the highest sustained levels on record — and the 2025 figure is understated due to publication lag.
The United States is the lead filing office with 20 patent records, followed by WIPO PCT with 7, Europe (EPO) and India each with 2, and Australia and Canada each with 1. Non-US markets are notably thin, leaving substantial geographic white space for applicants seeking international protection.
No co-applicant filing relationships are detected in the current evidence. All identified patent families are filed by single applicants. Whether this reflects a genuine absence of collaboration or the conduct of joint work under a single entity’s name cannot be determined from the filing data alone.
The most-cited work by reference count is titled ‘Power systems and methods for electric vehicles’ with 24 citations, followed by ‘Authentication using electromagnet signal detection’ with 17, and ‘Vehicle-based charging system for electric vehicles’ with 10. These citations signal that general EV power system architectures are the foundational prior art underpinning marine-specific 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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