EV Battery Pack for Marine Propulsion Patent Landscape
The EV battery pack for marine propulsion patent field is nascent but expanding on a multi-year basis, with 41 patent families concentrated heavily among a small cohort led by Volvo Car Corp. Activity is dominated by electric vehicle propulsion control IP adapted from land-based EVs, with dedicated marine propulsion coverage remaining a conspicuous gap.
Volvo Car Corp leads a highly concentrated, early-stage field
Volvo Car Corp holds the top position with 11 patent families, ahead of the University of Toronto Governing Council and EleapPower Ltd, each with 6 patent families. The top five filers account for 65% of the combined output of the hundred largest filers, signaling a field where a handful of actors have established early structural advantages.
The concentration is reinforced by a pronounced tier gap: the leader’s 11 patent families are nearly double those of the next two ranked applicants, while applicants ranked sixth and below hold 4 patent families or fewer. This two-tier structure is characteristic of an emerging field where first-movers have yet to face serious challengers at scale.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Volvo Car Corporation | 11 | |
| 2 | The Governing Council of the University of Toronto | 6 | |
| 3 | EleapPower Ltd | 6 | |
| 4 | Sparkion Power Algorithms Ltd | 4 | |
| 5 | DIPP R AB | 4 | |
| 6 | GM Global Technology Operations LLC | 4 | |
| 7 | Moon Sung Ub | 4 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 8 | Sung Ub Moon | 2 | |
| 9 | Nathalie Athena Safwat | 2 | |
| 10 | Cummins Inc. | 2 | |
| 11 | Sherif A. Safwat | 1 | |
| 12 | The Regents of the University of Michigan | 1 | |
| 13 | Ford Global Technologies LLC | 1 |
The leaders’ positions reflect a mix of automotive OEMs adapting existing EV drivetrain IP (Volvo Car Corp, GM Global Technology Operations), an academic-industrial partnership (University of Toronto and EleapPower Ltd), and specialist algorithm firms (Sparkion Power Algorithms). This diversity of actor types suggests the field has not yet consolidated around a dominant design or supply-chain model.
The most recent 18–24 months of filings are likely under-counted due to standard patent publication lag; apparent softness in 2024–2025 data should not be read as a real decline in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth with a 2022 activity peak and a dominant EV-propulsion technology base
Two charts frame the field’s trajectory and technology mix: one tracks annual filing volume from 2017 onward, the other maps the distribution of IPC technology classes across the corpus.
Annual filing trend
Filing volume was effectively zero through 2020, then surged in 2021 and reached a peak in 2022. The field remains on a positive multi-year trajectory (85% recent-window growth), though annual volume has eased from the 2022 peak. Data for 2024 and 2025 are understated by publication lag and should not be interpreted as further decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (electric vehicle propulsion) dominates the IPC mix and is present across all 41 patent families, confirming that the corpus is principally built on land-derived EV drivetrain and battery management technology. H01M (batteries, cells and fuel cells) and H02J (power supply and grid systems) are the next largest branches, reflecting battery chemistry and charging-system coverage. Notably, B63H (marine propulsion and steering) appears in only 1 patent record, underscoring how little of the IP has been tailored specifically to the marine operating environment.
↗ 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.
Power supply system for an electric vehicle and a …
An electric vehicle power supply system and cargo box includes an electric vehicle assembly, for location on the vehicle. The assembly includes a drivetrain, vehicle electric arrangements, including a low voltage arrangement having a vehicle system battery, for powering vehicle electric systems, and a vehicle first converter, converting power from traction… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Battery charge equalization system | 17 |
| 2 | Intelligent battery system | 9 |
| 3 | Intelligent battery system | 7 |
| 4 | Energy storage systems and methods for managing in… | 6 |
| 5 | Reducing electric discharge machining currents in … | 4 |
| 6 | Switch systems for rechargeable battery arrays | 4 |
| 7 | Range extending method and apparatus for evs | 3 |
| 8 | Intelligent battery 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 patent structure means for R&D investment decisions
The field’s combination of high concentration, early lifecycle stage, and sparse marine-specific IP creates both competitive risks and entry opportunities for R&D planners.
Growth stage with volume easing from a 2022 peak
The lifecycle evidence places this field in a Growth stage: three-year recent filings sit well above the prior three-year window (85% growth), confirming multi-year expansion. However, annual volume has eased from its 2022 peak. For R&D teams this means the foundational IP layer is being laid now, and early filing still carries first-mover value, but the window before the field matures is finite.
Growth · post-peak annualTop-heavy field with an accessible second tier
The top five filers account for 65% of the combined output of the hundred largest filers, and the leader alone holds 11 patent families. Below the top three, no applicant has filed more than 4 patent families, leaving the second tier relatively open. A new entrant with 5–8 targeted filings could realistically enter the top five.
High concentrationUniversity of Toronto and EleapPower Ltd are the field’s only identified co-filing pair
The sole documented collaboration links the University of Toronto Governing Council and EleapPower Ltd, who have jointly filed 6 patent families — a pairing that combines academic battery research with a commercial power-systems developer. No other co-filing relationships are present in evidence, suggesting the ecosystem has not yet formed the broader alliance networks typical of maturing technology fields.
Limited co-filingUnited States is the primary protection market; PCT filings suggest wider ambitions
The United States leads jurisdictional coverage with 26 patent records, followed by WIPO (PCT) with 8, Europe (EPO) with 4, Canada with 3, and Australia with 1. The PCT filings indicate some applicants are preserving international rights, but coverage outside North America remains thin. For entrants targeting European or Asian maritime markets, the limited EPO presence suggests relatively low freedom-to-operate friction at present.
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.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| The Governing Council of the University of Toronto | EleapPower Ltd | 6 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Volvo Car Corp leads on volume; Toronto–EleapPower partnership leads on battery-system depth
Two distinct strategic profiles define the current leadership: an automotive OEM with broad EV propulsion coverage, and an academic-commercial partnership focused on integrated battery and fuel-cell systems.
Volvo Car Corp
Volvo Car Corp holds 11 patent families, the largest portfolio in scope. Its technology emphasis spans EV propulsion management (B60L 58, B60L 3) and electric and magnetic measurement for battery diagnostics (G01R 31). All filings are flagged as a new entrant in the recent period, meaning the entire portfolio was built within the recent filing window — a concentrated burst of activity rather than a long-term accumulation. This suggests a deliberate strategic push into marine or multi-domain EV applications.
patent families: 11University of Toronto & EleapPower Ltd
The University of Toronto Governing Council and EleapPower Ltd each hold 6 patent families and share an identical technology focus across B60L 50, B60L 58, and H01M 16 — consistent with their documented co-filing relationship. Their combined 12 patent families, if treated as a coordinated portfolio, would rival Volvo Car Corp’s lead. Their emphasis on H01M 16 (hybrid battery and fuel-cell systems) gives this partnership a differentiated position in energy-source architecture relative to the pure-EV propulsion focus of the other leaders.
patent families: 6 each| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Volvo Car Corporation | 11 | ▲ new entrant |
| GM Global Technology Operations LLC | 4 | ▲ new entrant |
| Sparkion Power Algorithms Ltd | 1 | ▲ new entrant |
| Moon Sung Ub | 4 | ▲ new entrant |
| Sung Ub Moon | 2 | ▲ new entrant |
| Nathalie Athena Safwat | 2 | ▲ new entrant |
Under-served branches adjacent to the dominant EV propulsion core
Several IPC branches adjacent to the dominant B60L class have low patent-record counts relative to the corpus size, representing areas where coverage is sparse. Two stand out for their combination of low current density and plausible technical relevance to marine battery pack deployment.
B63H · Marine propulsion and steering
B63H appears in only 1 patent record across the entire corpus — a striking gap given that the topic is explicitly marine propulsion. The overwhelming reliance on land-derived B60L classifications suggests applicants have not been drafting claims that speak directly to hull integration, propeller-shaft coupling, or marine-specific thermal and corrosion environments. An entrant with IP tailored to B63H-class problems — such as waterproof pack enclosures, marine drivetrain torque profiles, or salt-water thermal management — would occupy essentially uncontested ground within this corpus.
Search this in Eureka →H02M · Power conversion (AC/DC etc.)
H02M (power conversion) appears in 6 patent records, a low share relative to the corpus. Marine vessels operate with AC shore power, diesel generator sets, and DC battery banks simultaneously, making bidirectional DC–AC conversion and high-efficiency inverter topology a technically critical subsystem. The sparse coverage in H02M suggests that power electronics architecture specific to marine battery packs — including galvanic isolation for seawater environments — has not been a primary focus of filers to date, creating a plausible entry point for power electronics specialists.
Search this in Eureka →How the leading applicants differ by technology route
Route coverage across the main technology branches in the current evidence set.
| Player | B60L 58 · Electric vehicle propulsion | B60L 50 · Electric vehicle propulsion | B60L 53 · Electric vehicle propulsion | H01M 10 · Batteries, cells & fuel cells | B60L 3 · Electric vehicle propulsion |
|---|---|---|---|---|---|
| Volvo Car Corporation | Strong · 11 | Emerging · 1 | Emerging · 1 | Moderate · 3 | Strong · 7 |
| EleapPower Ltd | Strong · 6 | Strong · 6 | Absent | Emerging · 1 | Absent |
| The Governing Council of the University of Toronto | Strong · 6 | Strong · 6 | Absent | Emerging · 1 | Absent |
| Sparkion Power Algorithms Ltd | Strong · 2 | Moderate · 1 | Strong · 2 | Strong · 3 | Absent |
| Moon Sung Ub | Absent | Absent | Strong · 4 | Moderate · 1 | Absent |
| DIPP R AB | Absent | Absent | Strong · 4 | Absent | Absent |
| Cummins Inc. | Strong · 2 | Absent | Absent | Absent | Moderate · 1 |
Frequently asked questions
The corpus contains 41 patent families in scope. This is a small field relative to broader EV battery technology, reflecting the early-stage, niche nature of the marine application segment.
Volvo Car Corp leads with 11 patent families, representing the largest single portfolio in the corpus. The University of Toronto Governing Council and EleapPower Ltd each follow with 6 patent families.
The field is in a Growth lifecycle stage on a multi-year basis, with recent three-year filings 85% above the prior three-year window. Annual volume has eased from its 2022 peak, but the most recent years are further understated by patent publication lag, so apparent softness in 2024–2025 should not be read as a real decline.
The United States is the primary protection market with 26 patent records, followed by WIPO (PCT) with 8 records, Europe (EPO) with 4, Canada with 3, and Australia with 1. Coverage outside North America is currently thin.
One co-filing relationship is documented in evidence: the University of Toronto Governing Council and EleapPower Ltd have jointly filed 6 patent families. No other co-applicant relationships are identified in the current evidence.
The most conspicuous gap is in B63H (marine propulsion and steering), which appears in only 1 patent record despite being the core application domain. H02M (power conversion) is also sparse at 6 patent records, representing an opening for power electronics specialists focused on marine-specific DC–AC conversion and galvanic isolation challenges.
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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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