Electric Drive Unit (EDU) Integration Patents: Top Companies & Trends 2026
- Filings peaked in 2022 at 62 and have not returned to that level since, suggesting the core motor-gearbox integration architecture is largely staked out rather than still expanding.
- B60K vehicle-propulsion claims appear in 328 of 430 families versus 94 for F16H gearing, meaning most protection sits on system-level integration rather than the gear mechanics inside the unit.
- The United States (148 filings) and China (76) dominate receiving offices, while momentum among several named assignees shows 0 filings in the latest year, a -100% YoY drop worth checking before assuming continued activity.
Filing growth compares 2021 (38 records) with 2024 (36) — 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 430 records in scope (CR5), not by the ranked leaders only.
What the Electric Drive Unit integration patent landscape actually covers
An electric drive unit combines a traction motor, gearbox and power electronics into a single housing, and the patent activity tracked here spans 2015 through mid-2026 across 430 patent families. The search string ties the mechanical shell — e-axle, integrated electric drive — to the technical problems that determine whether an integration actually works in a vehicle: motor-gearbox coupling, NVH, cooling, reduction ratio and power density. That combination is deliberate, because a housing patent alone says little; the claims that matter describe how heat, noise and torque are managed once the motor and gearbox share a case.
Filing activity concentrates heavily in B60K vehicle-propulsion classifications, with H02K motor claims layered on top and F16H gearing claims trailing well behind — a sign that the contested ground is system integration, not the gear train itself. Publication data lags actual filing by roughly 18 months, so the 2025-2026 figures in any trend chart understate real filing activity for those years.
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Filing trend and technology composition
Two views of the same 430-family dataset: the year-by-year filing count, and how those filings split across IPC subclasses.
Filings climbed then plateaued
Annual filings rose from 7 in 2017 to a peak of 62 in 2022, then held flat or declined through the most recent full year — a pattern more consistent with a maturing claim landscape than an emerging one. The most recent year (2026) is partial and will revise upward as publications catch up.
Integration claims outweigh gearing claims
B60K (328) and H02K (227) dominate the IPC composition, while F16H gearing (94), B60L EV propulsion (50) and B60H thermal management (24) form a secondary tier. B60B wheels and B62D steering appear only at the margins, at 12 and 10 records respectively, indicating those adjacencies are not yet heavily claimed within this search scope.
Shares are the percentage of the 430 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electric Drive Unit (EDU) Integration with Eureka
This page is one run against one query. Ask Eureka your own question about electric drive unit (edu) integration and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited prior art and a recent representative filing
Cooling structure for an integrated electric drive system
EP4239861B1, filed by BYD, describes a cooling structure for an integrated electric drive system — placing thermal management claims squarely inside the motor-gearbox housing rather than treating cooling as an external subsystem.Published 2026-06-24. Number, assignee and date are rendered from the underlying record.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070257570A1 | Electric Driving Unit for a Vehicle | 108 |
| 2 | US20040124722A1 | Electric drive unit | 75 |
| 3 | US6347682B1 | Electric drive unit for a bicycle | 69 |
| 4 | US5677582A | Drive unit | 63 |
| 5 | US20120313465A1 | Electric drive unit | 51 |
| 6 | WO2019154685A1 | Electric drive unit for a motor vehicle | 49 |
| 7 | US20090211824A1 | Electric axle drive unit | 46 |
| 8 | US20210039491A1 | Electrical Drive Unit for a Motor Vehicle and Motor Vehicle | 42 |
| 9 | US20050206250A1 | Cooled electric drive unit for a motor vehicle | 41 |
| 10 | US20050116554A1 | Electric drive unit | 41 |
Citation counts favour older filings simply because they have had more time to accumulate citations within the searched corpus — read them as markers of influence on later filers, 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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Browse MCP servers →What the numbers mean for a filing decision
Three patterns in the data that matter more than the raw family count.
Growth has flattened, not accelerated
The midpoint year, 2022, is also the peak. Filings since then have not exceeded that level, which points to a maturing rather than expanding claim space around core EDU integration architectures. New entrants should expect denser prior art than the raw family count of 430 might suggest.
System integration, not gear mechanics, is the contested layer
Nearly three-quarters of records touch B60K vehicle-propulsion classifications while only about a fifth touch F16H gearing. Reduction-ratio and gear-train mechanics inside the housing look comparatively less claimed than the packaging, control and thermal integration around them.
US filings lead but China and Europe are substantial
The United States accounts for the largest single share of receiving-office filings, with China and the European Patent Office each holding meaningful blocks and WIPO PCT filings (52) indicating a real share of applicants pursuing multi-jurisdiction protection from the outset.
Several established filers have gone quiet in the latest year
Named assignees including Bosch, BYD, Schaeffler and Jaguar Land Rover show zero filings in the most recent year with a -100% year-on-year change. Given publication lag, this may partly reflect filings still working through the pipeline rather than a genuine halt in R&D.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electric drive unit (edu) integration, with the prior art for and against each one.
Who is filing, and where the collaboration signals point
The assignee ranking spans established powertrain suppliers and vehicle OEMs, with a small number of co-assignee pairs indicating direct joint-development ties rather than pure competition.
Bosch's internal pairing is the strongest signal
The strongest co-assignee pair links Robert Bosch GmbH with a Bosch global software entity across 4 shared families, pointing to software-defined control being filed jointly with the mechanical integration work rather than as a separate track.
Vehicle makers are filing alongside tier-1 suppliers
BYD's EP4239861B1 cooling-structure filing sits alongside activity from established driveline suppliers, indicating that OEMs are not simply buying integrated EDUs off the shelf but protecting their own housing and thermal designs.
Axle and driveline specialists remain active alongside motor makers
Names in the assignee set include axle-focused manufacturers alongside motor and transmission specialists, confirming that EDU integration claims are being pursued from both the motor-electronics side and the traditional mechanical-driveline side of the industry.
| Assignee | Recent year | YoY |
|---|---|---|
| American Axle & Manufacturing | 0 | -100% |
| BYD Company Limited | 0 | -100% |
| Robert Bosch GmbH (Germany) | 0 | -100% |
| BPW Bergische Achsen KG | 0 | — |
| Schaeffler Technologies AG & Co. KG | 0 | -100% |
| Jaguar Land Rover Limited | 0 | -100% |
| Magna Powertrain AG & Co KG | 0 | — |
| Bayerische Motoren Werke Aktiengesellschaft (BMW AG) | 0 | — |
Where to take this analysis
The landscape data raises questions that are specific to your own filing strategy — these are the natural next steps.
Map your own claims against the IPC composition
Compare a draft claim set against the B60K/H02K/F16H split to see whether it sits in the dense integration layer or the comparatively lighter gearing layer.
Run a claim comparison in Patsnap Eureka →Check assignee momentum before assuming a competitor is active
Several major assignees show 0 filings in the latest year; verify whether that reflects publication lag or an actual shift in R&D priority before planning around it.
Track assignee activity in Patsnap Eureka →Explore the under-claimed sub-areas directly
Wheel-end cooling, cabin-thermal tie-in and steering-coupled packaging all show thinner records than the core integration claims — worth a dedicated search before committing R&D spend.
Search white space in Patsnap Eureka →Common questions about EDU integration patents
An electric drive unit combines a traction motor, a gearbox or reduction stage, and typically the associated power electronics into a single housing or closely coupled assembly. Patent searches in this space use terms like e-axle and integrated electric drive alongside technical qualifiers such as NVH, cooling and reduction ratio, because a bare housing claim without those functional elements says little about whether the integration actually solves a real vehicle problem. This dataset applies exactly that combination across IPC classes B60K, H02K and B60K17.
The assignee set spans established driveline and powertrain suppliers, motor specialists and vehicle OEMs rather than a single dominant filer. Some of the most active assignees by historical volume, including several named in this dataset, show zero filings in the most recent year with a -100% year-on-year change, which may reflect either a genuine pause or simply publication lag catching up. Reviewing assignee-level momentum alongside the raw ranking is necessary before concluding who is currently most active.
Relative to the 328 B60K and 227 H02K records, adjacent branches such as B60H cabin-thermal integration (24 records), B60B wheel-related claims (12) and B62D steering overlap (10) carry far fewer filings within this search scope. That does not guarantee those areas are unclaimed outside the scope searched, but it does indicate the core motor-gearbox-cooling integration claims are considerably more contested than wheel-end or steering-adjacent packaging. A first claim there would need to tie EDU waste heat or packaging directly to the wheel or steering subsystem to sit inside the gap.
Filings rose from 7 in 2017 to a peak of 62 in 2022, then flattened or declined through the most recent years tracked. Part of that apparent decline is a publication-lag artefact: patent applications typically publish around 18 months after filing, so 2025 and especially the partial 2026 figures will revise upward as pending applications come through. The remainder likely reflects a maturing claim landscape, where the core motor-gearbox integration architecture is already well covered by earlier filings.
EP4239861B1, filed by BYD and published 2026-06-24, claims a cooling structure specific to an integrated electric drive system, placing thermal management inside the housing-level claim rather than treating cooling as a bolt-on subsystem. Anyone designing a competing cooling path for an integrated motor-gearbox housing should review its specific claim language for overlap before finalising a design. Because it is a very recent grant, freedom-to-operate analysis around it is more time-sensitive than for the older, more-cited records in this dataset.
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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.