Electric Ferry Energy Management Patents: Top Companies & Trends 2026
Filing growth compares 2021 (270 records) with 2024 (167) — 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 2,592 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Electric ferry energy management sits at the intersection of vehicle electrification, control systems and wireless data transfer. The search scope pulls together 2,592 published records filed or published between 2015 and mid-2026 that combine electric propulsion, ferry or vessel operation, and energy management logic. Many of the highest-volume assignees in the ranking are not classic shipbuilders; the corpus draws heavily from general electric-vehicle, autonomous-systems and wireless-network filers whose claims extend into marine and multi-modal energy control, which is a useful signal in itself about how porous the boundary is between vessel-specific and vehicle-general energy management art.
The representative record below, filed by a Brazilian university engineering programme in 2017, illustrates the pattern well: a bidirectional smart energy management system aimed at electric and hybrid-electric vehicles broadly, with claims written generally enough to reach vessel applications. That breadth is characteristic of the field — much of the densest prior art was not written with ferries specifically in mind, which matters when scoping a freedom-to-operate search.
Filing trend and technology composition
The two views below sit on the same 2,592-record denominator: the trend line counts records by publication year, and the IPC breakdown counts records by class, so the technology shares add to more than 100% because a single record commonly carries several classes.
Filing activity peaked in 2021
Annual filings rose from 197 records in 2017 to a peak of 270 in 2021, then eased to 167 by 2024 — a 38% decline over that three-year span. 2025 and 2026 figures will continue to fill in as publication catches up with filing, typically an 18-month lag, so the most recent years should not yet be read as a slowdown.
Software and control classes dominate over propulsion hardware
G06Q (business, commerce and admin data processing) leads at 18.7% of records, followed by H04W wireless networks at 12.4% and G05D non-electric variable control at 11.4%. B60L, the class specific to electric vehicle propulsion, trails at 7.6% — a sign that claim density concentrates in the management and communications layer rather than in the electric drivetrain itself.
Shares are the percentage of the 2,592 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electric & Hybrid Vessels: Electric Ferry Energy Management Patent Landscape with Eureka
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Try EurekaA representative filing and the most-cited prior art
Smart energy management systems for electric and hybrid electric vehicles with bidirectional connection (2017)
The present invention relates to a smart energy management system for vehicles that are totally electric or electro-hybrid, that prioritizes the regeneration of kinetic energy into electric energy, comprised by a main energy control unit with adaptive control to improve efficiency on subsequent travel over a specific route, an embedded energy storage system, a two-way charger for normal or occasional recharging or for supplying electric energy to an external consumer, converters for the auxiliary system, and remote operation control and servicing capability.Filed by a Brazilian federal university engineering programme; claims are written broadly across electric and hybrid vehicle types rather than restricted to marine vessels.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20080120129A1 | Consistent set of interfaces derived from a business object model | 2,470 |
| 2 | US20190258251A1 | Systems and methods for safe and reliable autonomous vehicles | 1,048 |
| 3 | US20180350144A1 | Generating, recording, simulating, displaying and sharing user related real world activities, actions, events… | 906 |
| 4 | US8989053B1 | Association management in a wireless node network | 879 |
| 5 | US20100210745A1 | Molecular Healing of Polymeric Materials, Coatings, Plastics, Elastomers, Composites, Laminates, Adhesives, a… | 718 |
| 6 | US20180096175A1 | Blockchain Enabled Packaging | 670 |
| 7 | US20140309864A1 | Configurable Dash Display Based on Detected Location and Preferences | 667 |
| 8 | US20140306833A1 | Providing Home Automation Information via Communication with a Vehicle | 640 |
| 9 | US20020091991A1 | Unified real-time microprocessor computer | 565 |
| 10 | US20030035917A1 | Image making medium | 541 |
Citation counts reward older filings that have had more time to accumulate citations inside the searched corpus; treat them as a measure of influence within this dataset, not as a ranking of current technical importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the ranking, the trend and the classification data are read together.
A narrow leadership tier sits above a long tail
The top five assignees combined hold 656 of the 2,592 records in scope, and the top ten extend that to 1,016, or 39.2%. The leader alone accounts for 170 records against a fifth-place figure of 81 and a tenth-place figure of 59 — a steep drop-off that suggests real advantage concentrates in a handful of portfolios rather than being evenly spread.
Filing volume has pulled back from its peak, not stalled
Activity rose steadily through the late 2010s, peaked at 270 records in 2021, and settled to 167 by 2024 — a 38% decline over three years. Because publication lags filing by roughly 18 months, 2025-26 counts are still incomplete and should not be read as confirming a continued fall.
Claim pressure sits in software, not propulsion
G06Q business-and-administration data processing touches 18.7% of records, more than double the 7.6% carried by B60L, the class specific to electric vehicle propulsion. Wireless and general digital-processing classes (H04W, G06F) also outrank most hardware categories, indicating that scheduling, dispatch and data-management logic is where the densest prior art sits.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electric & hybrid vessels: electric ferry energy management patent landscape, with the prior art for and against each one.
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, portfolio benchmarking, or identifying open claim space.
Run a freedom-to-operate check against the leading portfolios
With 39.2% of records held by ten assignees, a targeted clearance search against those portfolios will cover a large share of the crowded claim space before broader searching is needed.
Explore assignee portfolios in EurekaMap the software-versus-hardware claim split before drafting
Because G06Q and H04W classes outweigh B60L, new applications should map explicitly against the management-logic art, not just propulsion hardware, to avoid overlapping the densest prior art.
Build a claim chart in EurekaTrack the under-claimed branches for early filing advantage
Sub-areas like fleet load balancing and shore-to-vessel dynamic charging show thinner filing density relative to the core field, offering room for earlier, broader claims.
Monitor white space in EurekaCommon questions about this landscape
The ranking covers 100 companies counted by patent records, with the leading assignee holding 170 records and the top five together holding 656, or 25.3% of the 2,592 records in scope. That leaves a long tail of single- or few-filing entrants below the top ten, which together hold 39.2% of the field. The mix includes general electric-vehicle, autonomous-systems and wireless-network filers alongside dedicated marine research programmes, so a leadership position in this dataset does not necessarily mean a marine-focused company.
Filings rose from 197 records in 2017 to a peak of 270 in 2021, then eased to 167 by 2024, a 38% decline over that three-year span. Because publication typically lags filing by around 18 months, the 2025 and 2026 figures in any dataset are still incomplete and should not be read as evidence the field is shrinking further. The honest read is a pull-back from a 2021 peak, not a confirmed multi-year decline.
Business and administrative data-processing claims (IPC class G06Q) appear on 18.7% of the 2,592 records in scope, ahead of wireless communication networks (H04W, 12.4%) and non-electric variable control (G05D, 11.4%). Electric vehicle propulsion hardware itself, IPC class B60L, sits lower at 7.6%. Because a single record can carry several IPC classes, these shares add to more than 100%, but the ranking pattern is consistent: management, control and communications logic carries more claim density than the propulsion hardware itself.
The 2017 filing from a Brazilian federal university engineering programme describes a bidirectional smart energy management system for electric and hybrid-electric vehicles generally, covering an adaptive main energy control unit, embedded energy storage, a two-way charger, and remote operation controls. Its claims are written at the vehicle level rather than restricted to marine vessels, so it is a relevant prior-art reference to screen against for any bidirectional-charging or route-adaptive energy control claim touching ferries. Whether it actually blocks a specific new application depends on claim-by-claim comparison of the independent claims, which a formal freedom-to-operate search should confirm.
Filing density is comparatively thin in sub-areas such as shore-to-vessel dynamic charging protocols, multi-vessel fleet load balancing, and predictive route-based energy scheduling, relative to the dense core claims around general bidirectional energy management and business-process data handling. These branches sit adjacent to the crowded G06Q and H04W claim territory but have not attracted the same filing volume. That gap is worth watching for entrants able to file specific, technically detailed claims before the space fills in.
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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.