EV Battery Pack for Electric Buses Patent Landscape
The EV battery pack for electric buses patent space is highly concentrated, with a single dominant filer — InductEV Inc — holding a commanding position among the top-ranked applicants. The field is in a growth stage on a multi-year basis, though annual volume has eased from its 2023 peak and the most recent filing years remain subject to publication lag.
InductEV Inc leads a tightly concentrated field with a substantial first-mover advantage
InductEV Inc occupies the visible position in this landscape, ranking first with 23 patent families — nearly three times the count of the second-ranked filer, Volvo Construction Equipment AB, which holds 7 patent families. Here Global BV, Sparkion Power Algorithms Ltd, and GM Global Technology Operations LLC round out the top five with smaller but notable positions.
The top five filers together account for all of the combined total among the ranked applicants visible in this query, indicating an extremely concentrated visible assignee structure with virtually no long-tail dispersion at the ranked level. There is a sharp tier gap between InductEV Inc and the rest of the field, suggesting that the leading position reflects a deliberate and sustained filing strategy rather than broad industry participation.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | InductEV Inc | 23 | |
| 2 | Volvo Construction Equipment AB | 7 | |
| 3 | Here Global BV | 3 | |
| 4 | Sparkion Power Algorithms Ltd | 2 | |
| 5 | GM Global Technology Operations LLC | 2 |
InductEV Inc’s lead, anchored in electric vehicle propulsion charging and route navigation, implies that any new entrant attempting to compete directly in the core B60L charging sub-classes will face a dense prior-art environment. Challengers may find more room in adjacent technology branches where the incumbents have lighter coverage.
Filing counts for 2024 and 2025 are likely understated due to standard patent publication lag of 18–24 months; the apparent slowdown in those years should not be interpreted as a structural decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2023 filing surge anchors multi-year growth; propulsion charging dominates the technology mix
The annual filing trend reveals a field that expanded sharply in 2023 before easing, while the technology composition shows overwhelming concentration in electric vehicle propulsion classes with a set of thinner adjacent branches.
Annual filing trend
Activity was sporadic from 2017 through 2022, with a pronounced surge in 2023 that accounts for a large share of cumulative volume. Filings in 2024 and 2025 appear lower, but this largely reflects publication lag rather than a true contraction; the field remains in a growth stage on a multi-year basis, with recent three-year volume well above the prior three-year window.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (Electric vehicle propulsion) is the overwhelmingly visible class, reflecting the core focus on charging systems and battery management for transit applications. G01C (Distance, navigation and gyroscopes) and H02J (Power supply and grid systems) form a secondary layer, pointing to route-optimization and grid-integration work. H01M (Batteries, cells and fuel cells) and B60K (Vehicle propulsion and drive) each represent a smaller share, signaling that cell-level and drivetrain-level coverage is comparatively sparse.
↗ 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.
Energy storage systems and methods for managing in…
Disclosed herein is a system a including a controller, a switching assembly commanded by the controller, and a DC-DC charger associated via the switching assembly with an array of power storage devices (PSDs). The system is controllably connectable to a power source, and, to rechargeable loads. The switching assembly is configured to individually enable and… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Method and apparatus for providing a charging time… | 17 |
| 2 | A coolant system for a vehicle | 9 |
| 3 | Strategic Opportunity Charging for On-Route Electr… | 6 |
| 4 | Energy storage systems and methods for managing in… | 6 |
| 5 | Charging Strategies for Electric Vehicles | 5 |
| 6 | Strategic opportunity charging for on-route electr… | 4 |
| 7 | Strategic opportunity charging for on-route electr… | 4 |
| 8 | Energy storage systems and methods for managing in… | 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 competitive structure means for R&D investment decisions
The combination of high concentration, a clear growth trajectory, and sparse adjacent branches creates both risk and opportunity for engineers and strategists evaluating entry or expansion in this space.
Growth stage with annual volume easing from a 2023 peak
The field carries a Growth lifecycle designation: recent three-year filings sit well above the prior three-year window, representing a multi-year growth rate of 450%. However, annual volume has eased from its 2023 peak, and the most recent years are further understated by publication lag. Entrants arriving now are still in a relatively early market but face an increasingly active prior-art base led by InductEV Inc.
Lifecycle: GrowthExtreme top-tier concentration leaves narrow room for direct competition
InductEV Inc’s 23-family position against a total of 37 patent families in scope signals that the core charging and propulsion sub-classes are already densely covered by one player. The second-ranked Volvo Construction Equipment AB holds 7 families, creating a wide gap. Any R&D program targeting the same core B60L charging sub-classes should plan for freedom-to-operate analysis against InductEV Inc’s portfolio before committing resources.
High concentrationNo co-applicant activity detected in this landscape
Evidence pending: the collaboration dataset returned no co-filing relationships among the ranked applicants. The absence of cross-applicant collaboration suggests that participants are pursuing independent, proprietary strategies rather than consortia or joint-development agreements. This could indicate either early-stage secrecy or a winner-take-most dynamic that discourages open partnership.
No co-filings detectedUS-centric filings with secondary EPO and PCT coverage
The United States is the lead jurisdiction, followed by Europe (EPO) and WIPO (PCT), with smaller positions in Mexico and Canada. The geographic spread reflects a North American commercial focus with meaningful international protection via EPO and PCT routes. Germany and Austria each carry a single filing, suggesting selective rather than comprehensive European coverage and leaving some jurisdictions relatively uncontested.
US-led geographyGo 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.
InductEV Inc
InductEV Inc holds 23 patent families and is flagged as a new entrant in momentum terms, indicating that its entire portfolio has been built rapidly in the recent filing window. Its technology emphasis is concentrated in B60L 53 (EV charging infrastructure, 21 records) and B60L 58 (battery state management, 9 records), with a secondary position in G01C 21 (route navigation, 8 records). This profile points to a vertically integrated strategy covering on-route opportunity charging, vehicle-side power management, and navigation-linked charging optimization.
families: 23Volvo Construction Equipment AB
Volvo Construction Equipment AB holds 7 patent families and sits clearly in second place. Its technology focus spans B60K 1 (vehicle propulsion and drive, 4 records) and B60L 50 (general EV propulsion, 4 records), with lighter B60L 58 coverage (2 records). This profile reflects a drivetrain and powertrain integration angle rather than the charging-infrastructure emphasis of the leader, suggesting a complementary rather than directly competing R&D direction.
families: 7Frequently asked questions
The landscape covers 37 patent families in scope. This is a focused, early-stage corpus reflecting a specialized application domain rather than the broader EV battery field.
InductEV Inc is the leading filer with 23 patent families, which represents a commanding position in this concentrated landscape. Volvo Construction Equipment AB is the second-ranked filer with 7 patent families.
Annual filings were sporadic between 2017 and 2022, then surged in 2023 before easing in 2024 and 2025. The field is in a Growth lifecycle stage on a multi-year basis, with a 450% increase in recent three-year filings versus the prior three-year window. The most recent years are likely understated due to publication lag.
The United States leads with 15 patent records, followed by Europe (EPO) with 8 and WIPO (PCT) with 5. Mexico and Canada each have smaller positions. Germany and Austria each carry a single filing.
B60L (Electric vehicle propulsion) is overwhelmingly visible. Secondary classes include G01C (Distance, navigation and gyroscopes) and H02J (Power supply and grid systems). H01M (Batteries, cells and fuel cells) and B60K (Vehicle propulsion and drive) each have comparatively sparse coverage.
No co-applicant or co-filing relationships were detected among the ranked applicants in this landscape. Participants appear to be pursuing independent, proprietary filing strategies without evident cross-organizational collaboration.
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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.