Forklift Vehicle Patents: Leaders, Trends & White Space 2026
- Filing has flattened, not grown. activity peaked in 2022 and the trend since is flat to declining, so lithium conversion and stability control are being defended rather than expanded into.
- Lifting hardware still outweighs the electrification layer. B66F jacks-and-lifting classifications outnumber B60L propulsion and H01M battery classifications combined, meaning the mechanical mast and lift mechanism remains the denser claim territory.
- Citation weight sits on a handful of older records. the most-cited family, a modular lithium-ion battery system for forklifts, draws far more citations than any stability-control or mast patent in the set.
What this landscape covers
This review tracks patent families published between 2015 and 2026 at the intersection of forklift and industrial truck hardware and four functional claims: lithium conversion, stability control, operator assistance, mast design and opportunity charging. The corpus is filtered to IPC classes covering lifting devices, electric vehicle propulsion and lifting/crane mechanisms, so it captures the retrofit and new-build electrification wave layered onto conventional lift-truck mechanics rather than warehouse software or fleet telematics filed under separate classes.
Filing office data shows the United States as the largest single receiving office, with Europe, Canada, Australia and China each contributing a meaningful but smaller share. Publication in the most recent year is necessarily incomplete, since filing-to-publication lag runs roughly 18 months, so any apparent drop in 2025-2026 understates real filing activity.
Filing trend and technology composition
Two views of the same 51-family dataset: how filing volume moved year over year, and how those families distribute across IPC subclasses.
A peak in 2022, then a plateau
Filing rose from 8 in 2017 to a peak of 9 in 2022, then held flat or declined through the most recent partial year of 3. Read the tail end cautiously: publication lag means 2025 and 2026 figures will rise as later-filed applications publish.
Lifting mechanics still dominate the classification mix
B66F (jacks and lifting devices) carries the largest share at 56 records, ahead of B60L electric propulsion at 21 and H01M batteries at 19. Suspension (B60G), power supply and grid integration (H02J), and vehicle propulsion drive (B60K) each register in single digits, and control-of-non-electric-variables (G05D) and cranes/hoists (B66C) are the thinnest branches — evidence that autonomous or sensor-driven control claims remain sparse relative to core lift-mechanism and electrification claims.
Shares are the percentage of 139 class assignments (one record can carry several), not of the record count.
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Try EurekaThe records carrying the most citation weight
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190103639A1 | Modular lithium-ion battery system for fork lifts | 77 |
| 2 | US6719098B1 | Stability control apparatus for industrial vehicles | 22 |
| 3 | US4307792A | Forklift roller mast lock | 19 |
| 4 | CN104925701A | 叉车横向稳定性控制方法及其电控系统 | 17 |
| 5 | GB2413547A | Industrial truck having a static and dynamic tipping stability control device | 13 |
| 6 | EP2233427A1 | Method and system for dynamically maintaining the stability of a material handling vehicle having a vertical … | 8 |
| 7 | US20170297880A1 | Systems and Methods for a Public Standard Interface for Material Handling Vehicles | 7 |
| 8 | EP0916527A2 | Stability control apparatus for industrial vehicles | 7 |
| 9 | US20240017976A1 | Advanced material handling vehicle | 6 |
| 10 | CN109399508A | 一种三级叉车门架 | 6 |
Citation counts are drawn from the searched corpus and skew toward older filings that have had more time to accumulate references; treat them as a measure of influence within this dataset, not as a signal of which claims are currently most contested.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Four read-outs from the filing, classification and citation data, each pointing to a different decision a filer or licensing team would need to make.
Growth has stalled, not accelerated
The midpoint year, 2022, is also the peak. Filing since has not exceeded that level, and the most recent year sits well below it even accounting for publication lag. This is a mature filing pattern, not an emerging one.
Mechanical lift claims still outnumber the electrification layer
B66F lifting-device classifications carry more weight than the combined electric propulsion and battery classes. Electrification claims are being added onto an already dense mechanical claim base rather than replacing it.
One lithium-conversion record carries outsized influence
The gap between the most-cited record and the second-most-cited is large enough to suggest a single architecture, not a cluster of competing designs, has shaped how later filers approach battery retrofit.
Almost no joint filing
Co-assignment is rare in this dataset — only two pairs appear at all, and neither recurs more than twice. Filing here is overwhelmingly a single-assignee activity, which narrows the field for licensing-in partnerships built around joint IP.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to forklift and industrial vehicle technology, with the prior art for and against each one.
Who is filing, and who is still active
Recent-year momentum is thin across the board: most tracked assignees show zero families in the latest year, and the two showing any activity register just one each. That pattern, combined with almost no co-assignment, points to a fragmented field rather than one led by a dominant filer.
Anhui Heli keeps filing while peers pause
Anhui Heli is one of only two assignees in this dataset with any recorded activity in the latest year, against a majority showing none.
ETHIUM LLC is the other active recent filer
ETHIUM LLC also appears in the strongest co-assignee pairing in the dataset, alongside the same partner, making it one of the few entities filing jointly at all.
Established forklift OEMs show no recent new filings in this slice
Raymond, Yale (Ethium LLC), Toyota Industries and Toyota Material Handling Manufacturing Italy all register zero families in the most recent year within this specific claim scope, though earlier-year activity places them among the tracked assignees.
| Assignee | Recent year | YoY |
|---|---|---|
| Anhui Heli Co., Ltd. | 1 | — |
| ETHIUM LLC | 1 | — |
| The Raymond Corporation | 0 | — |
| Ethium LLC | 0 | — |
| Toyota Industries Corporation | 0 | — |
| Toyota Material Handling Manufacturing Italy S.p.A. | 0 | — |
| THIRD WAVE AUTOMATION INC | 0 | -100% |
| Linde Material Handling GmbH | 0 | — |
Where to take this landscape
This dataset answers what has been filed and by whom. Two follow-on questions determine what to do with that answer.
Map the lithium-conversion claim boundary in detail
The most-cited record in this set concentrates influence in retrofit battery architecture; a claim-by-claim comparison against that family would clarify how much room remains for new modular designs.
Explore in EurekaTrack the under-claimed branches for early filing advantage
Autonomous stability sensing, crane/hoist integration and suspension-linked tip control all show thin IPC coverage relative to core lift and battery classes, which is where a first-mover claim is easier to establish.
Explore in EurekaCommon questions about forklift and industrial vehicle patents
The most-cited record in this landscape is a modular lithium-ion battery system for fork lifts, published as US20190103639A1, with 77 citations — more than triple the second most-cited record. High citation counts in a searched corpus tend to favour older filings that have had more time to accumulate references, so this reflects influence within the dataset rather than a claim to current market dominance. Anyone designing a lithium retrofit architecture should review this family closely, since its citation weight suggests many later filers had to design around or build upon it.
Filing peaked in 2022 and has been flat or declining since, based on family counts by year. The most recent year is partial and understated because publication typically lags filing by around 18 months, so some of the apparent decline will correct upward as later applications publish. Even allowing for that lag, the pattern across the period looks like a mature, plateaued filing field rather than one still accelerating.
Lifting-device mechanics classified under B66F account for the largest share of records in this landscape, ahead of electric vehicle propulsion (B60L) and battery technology (H01M). Suspension, power-grid integration and propulsion-drive control appear in single digits, and autonomous control and crane integration are the thinnest categories. This means claim space around the physical mast and lift mechanism remains the most densely occupied, even as electrification claims are added on top of it.
The sparsest IPC categories in this dataset are control of non-electric variables (G05D) and cranes and hoists (B66C), followed by suspension (B60G) and power-grid systems (H02J). That pattern points to under-claimed branches around autonomous stability sensing, crane-to-lift-truck integration, and grid-aware opportunity charging. A first claim in these areas would likely combine an existing lift or propulsion mechanism with a specific sensing or grid-interface method not yet densely covered by prior filings in this corpus.
Rarely, based on this dataset — only two co-assignee pairs appear across all 51 families, and the strongest of them recurs just twice. One pairing links Ethium LLC with a named battery-technology partner, and the field otherwise shows almost no joint filing between vehicle OEMs and component suppliers. This suggests that most patent protection here is built and held by a single assignee rather than negotiated through joint-development filing arrangements.
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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.