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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/electric-and-hybrid-vessels-battery-electric-vessel-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent landscape · Marine & offshore engineeringBattery electric vessel patents: mapping filing trends, leading assignees and open claim space
168.4K
Published Records
5%
Top-5 Share of All Records
-27%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (1,263 records) with 2024 (921) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 168,445 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What the filing record shows
Battery electric vessel patenting sits at the intersection of two much larger fields: battery chemistry and marine engineering. The search string used here pulls in 168,445 published records spanning 2015 through mid-2026, and the technology composition data makes the intersection visible — H01M battery and cell classes appear far more often than the marine-specific subclasses B63H and B63B. That gap is the central fact of this landscape: a large share of the activity that touches battery electric vessels is filed as general battery or power-electronics art, not as vessel-specific engineering.
The assignee ranking is broad rather than concentrated: 100 companies appear in the ranking, and even the top 10 combined account for only 7.2% of all records in scope. That points to a field still being contested by a wide set of players — automotive, industrial-battery and marine-equipment firms alike — rather than one already locked up by a handful of incumbents.
Filing activity and technology composition, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The numbers
Filing trend and technology composition
Two views of the same 168,445-record dataset: how filing volume has moved year over year, and which IPC subclasses carry the claim activity.
Filing trend, 2017-2026
Annual filings rose from 830 in 2017 to a peak of 1,384 in 2022, then eased to 921 by 2024, a complete year — a 27% decline from the 2021 level of 1,263. 2025 and 2026 figures (down to 51 in the partial 2026 year) are not yet comparable, since publication typically lags filing by around 18 months.
IPC subclass composition
H01M (batteries, cells & fuel cells) leads at 4.9% of all records, followed by the marine and vehicle-propulsion classes B63H, B60L and B63B each near 0.9-0.8%, with power-supply class H02J and materials classes C01B/C01G trailing further behind. Because records can carry multiple IPC codes, these shares do not sum to 100%.
Shares are the percentage of the 168,445 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Representative filing and most-cited prior art
Representative recent filing
US12548842B2 — Battery pack for an electric marine vessel
VISION MARINE TECHNOLOGIES
Describes a battery pack for an electric marine vessel built around a waterproof chassis housing a high-voltage battery of multiple cells, with positive/negative high-voltage connectors, a manual disconnect connector and a signals connector mounted on a front flange, the signals connector communicating with a power distribution unit and vessel control unit, plus an internal battery management system.Filed by Vision Marine Technologies, published 2026-02-10 — illustrates the current state of the art in marine-specific battery pack integration rather than general battery chemistry.
Most-cited records in this dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US9808246B2 | Method of operating a powered surgical instrument | 2,546 |
| 2 | US20160249910A1 | Surgical charging system that charges and/or conditions one or more batteries | 2,422 |
| 3 | US10182816B2 | Charging system that enables emergency resolutions for charging a battery | 2,188 |
| 4 | US10159483B2 | Surgical apparatus configured to track an end-of-life parameter | 2,164 |
| 5 | US10245028B2 | Power adapter for a surgical instrument | 2,110 |
| 6 | US6666875B1 | Surgical apparatus permitting recharge of battery-driven surgical instrument in noncontact state | 2,092 |
| 7 | US20110022032A1 | Battery ejection design for a surgical device | 2,086 |
| 8 | US20040116952A1 | Surgical apparatus permitting recharge of battery-driven surgical instrument in noncontact state | 2,052 |
| 9 | US20060196518A1 | Flameless electronic atomizing cigarette | 1,898 |
| 10 | US9931118B2 | Reinforced battery for a surgical instrument | 1,790 |
Citation counts favour older records simply because they have had more time to accumulate citations within the searched corpus; treat this as a signal of influence, not of current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the data implies for strategy
Three patterns worth acting on rather than just noting.
Concentration
4.5% of 168,445
top 5 combined share
No gatekeeper controls the field
The leading assignee holds 1,825 records, but the top 5 together are only 4.5% of all records in scope and the top 10 only 7.2%. For a new entrant, this means freedom-to-operate risk is spread across many smaller portfolios rather than concentrated in one or two blocking patent families.
Based on the full 100-company ranking
Filing momentum
-27%, 2021-2024
complete-year filing change
Activity has pulled back from its 2022 peak
Filings rose from 830 in 2017 to a peak of 1,384 in 2022, then declined to 921 by 2024, the most recent complete year — a 27% drop over that three-year window. This looks like a cooling in new claim activity after the initial wave, not a collapse in the field.
2025-2026 figures still filling in due to publication lag
Technology mix
4.9% vs 0.9%
H01M share vs B63H share
Battery chemistry claims dwarf marine-specific ones
H01M (batteries and cells) sits at 4.9% of the 168,445 records, more than five times the 0.9% held by B63H marine propulsion and steering. Vessel-specific integration claims are a much smaller slice of the total than raw battery-technology claims.
Shares sum to more than 100% since records carry multiple IPC codes
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Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, sourcing or claim drafting.
Check freedom-to-operate against the fragmented leader set
With no single assignee holding more than a small slice of the field, a freedom-to-operate review needs to cover a wider set of mid-tier filers rather than just the nominal leader.
Explore assignee portfolios in EurekaWatch the OEM-affiliate co-filing pattern
The strongest co-assignee links are between automotive OEMs and their own battery-energy affiliates, suggesting vertically integrated filing strategies worth tracking as vessel electrification scales up.
Trace co-assignee networks in EurekaDraft into the marine-specific gap
With B63H and B63B classes far thinner than H01M, claims tied to vessel-specific integration — chassis, connectors, control systems — sit on less crowded prior art than general battery chemistry claims.
Search white space in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on battery electric vessel patents
The ranking spans 100 companies, and the leading assignee holds 1,825 records, but that is a modest share of the 168,445 total records in scope. The top 5 combined account for only 4.5% of all records, and the top 10 for 7.2%, so no single company controls the field. The filers at the top include large automotive and electronics groups whose portfolios reflect general battery technology as much as marine-specific engineering.
Filing rose steadily from 830 records in 2017 to a peak of 1,384 in 2022, then declined to 921 by 2024, the most recent complete year — a 27% drop over that three-year span. Figures for 2025 and 2026 are lower still, but that reflects publication lag of roughly 18 months rather than an actual collapse in filing. Treat 2024 as the most reliable recent-year baseline.
Battery and cell technology (IPC class H01M) leads at 4.9% of all 168,445 records, well ahead of the marine-specific classes B63H (marine propulsion, 0.9%) and B63B (ships and vessels, 0.8%). Electric vehicle propulsion (B60L) and power supply systems (H02J) also appear at similar levels to the marine classes. This shows most patent activity in this space is being driven by battery chemistry advances rather than vessel-specific engineering.
The thinnest claim density relative to the core battery and propulsion classes sits in vessel-specific integration work: battery pack waterproofing, dockside charging infrastructure, retrofit battery-swap systems and hybrid power-split control tailored to marine hulls. These areas draw on the same underlying battery technology but have far fewer marine-specific filings, based on the low share held by B63H and B63B compared with H01M. A first claim in these areas would likely combine a general battery or power-electronics element with a marine-specific structural or control feature.
It is fragmented rather than gated: the top 10 ranked assignees together hold only 7.2% of the 168,445 records in scope, leaving a long tail of filers with smaller portfolios. Co-assignee data shows the strongest collaboration links are internal, between automotive OEMs and their own battery or energy affiliates, rather than broad cross-industry partnerships. This structure means new entrants face dispersed rather than concentrated freedom-to-operate risk.
Answers are grounded in the same dataset. Derived from a Patsnap search on Electric & Hybrid Vessels: Battery Electric Vessel Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.