Power Generation Patents: Top Filers & Filing Trends 2026
- Filing is thinly concentrated. the leading assignee accounts for 5,093 records, and the ranked group's top 10 combined hold just 22.2% of all 84,052 records in scope — most of the field sits with a long tail.
- H02J dominates the class mix. power supply and grid systems (H02J) touches 8.9% of records, more than double the next largest class, H02M power conversion at 3.8%.
- Growth has cooled from its peak. filings ran from 966 in 2021 to 595 in 2024, a 38% pullback over that complete three-year span, after peaking at 1,096 in 2019.
Filing growth compares 2021 (966 records) with 2024 (595) — 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 84,052 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape maps 84,052 published records filed between 2015 and the 2026 data cut-off, drawn from a search that pairs power-generation and system-integration language with circuit-level terms such as switching frequency, power stage, current sensor and grid control. That pairing pulls in the hardware layer of grid and vehicle power systems — conversion stages, control circuits and sensing — rather than generation technology in the abstract.
Filings run across automotive, industrial-electronics and utility-equipment assignees, with the heaviest single class, H02J, sitting squarely on power supply and grid architecture. Publication lags filing by roughly 18 months, so the most recent one to two years in any trend here will read lower than the true filing rate once those records publish.
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Filing trend and technology composition
Two views of the same 84,052 records: how filing volume has moved year over year, and how it splits across the IPC subclasses that define the field's hardware layers.
Filing volume, 2017–2026
Annual filings rose from 919 in 2017 to a peak of 1,096 in 2019, then eased to 595 by 2024 — the last year in this trend that can be read as complete. The 2021-to-2024 span shows a 38% decline; 2025 and 2026 figures are still filling in as publications catch up with filing dates, so treat the most recent bars as understated rather than as evidence of a further slowdown.
Technology composition by IPC subclass
H02J (power supply and grid systems) covers 8.9% of the 84,052 records, well ahead of H02M power conversion at 3.8% and H01M batteries and fuel cells at 2.9%. Motor and generator control (H02P), EV propulsion (B60L) and electrical measurement (G01R) each sit in the 1.8%–2.5% range. Because a single record can carry several IPC codes, these shares are read against the full record count and will not sum to 100%.
Shares are the percentage of the 84,052 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Power Generation & System Integration Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about power generation & system integration patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative and most-cited records
Uninterrupted power supply circuit unit and method for uninterrupted power supply of consumers of a power generation plant
The filing describes a UPS circuit unit for a power generation plant feeding current into a power network. It pairs an inductance element — a transformer or choke — with a first UPS control circuit tied to a DC power path, arranged so that a voltage drop in the power network triggers uninterrupted supply from the DC source. A second, independent UPS control circuit is layered on top of the first for redundancy.Filed by FECON GMBH; the specific claim scope and priority date are rendered alongside this entry.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US9808246B2 | Method of operating a powered surgical instrument | 2,546 |
| 2 | US20160256184A1 | Powered surgical instrument | 1,781 |
| 3 | US8328802B2 | Cordless medical cauterization and cutting device | 1,686 |
| 4 | US6663623B1 | Electric surgical operation apparatus | 1,403 |
| 5 | US20190201047A1 | Method for smart energy device infrastructure | 1,273 |
| 6 | US8491581B2 | Method for powering a surgical instrument | 1,211 |
| 7 | US9026347B2 | Smart electric vehicle (EV) charging and grid integration apparatus and methods | 1,039 |
| 8 | US20100332373A1 | System and method for participation in energy-related markets | 1,024 |
| 9 | US20180085117A1 | Powered surgical instrument | 1,011 |
| 10 | US9614258B2 | Power storage device and power storage system | 1,006 |
Citation counts favour older records simply because they have had longer to accumulate them — read them as a signal of historical influence, not 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 data means for filing strategy
Three read-outs from the composition and trend data that matter more for a filing decision than the raw counts alone.
Power supply and grid architecture is the crowded layer
H02J's 8.9% share of all 84,052 records is more than double the next-largest class. Anyone drafting claims around grid-facing power supply architecture is filing into the densest part of this landscape, where broad claim language is least likely to clear prior art.
No single assignee controls the field
The leading assignee holds 5,093 records, but the top 10 combined account for only 22.2% of all records in scope. That leaves the large majority of filings spread across a long tail — a structure that favours new entrants who can find specific, uncrowded claim language rather than one that rewards head-on competition with an incumbent.
Volume has pulled back from its 2019 peak
Filings peaked at 1,096 in 2019 and had fallen to 595 by 2024, a complete three-year decline of 38% from the 2021 level of 966. Read the 2025–2026 bars with caution: publication lag of roughly 18 months means those years are still filling in and should not be read as a continuation of the decline.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to power generation & system integration patent landscape, with the prior art for and against each one.
Who is filing, and where the activity is thinning
The ranked assignee list spans 100 companies drawn from automotive, industrial-electronics and heavy-equipment backgrounds. Momentum in the most recent year is down across nearly every tracked assignee, which is consistent with the publication lag rather than a genuine drop in filing activity.
A single leader well ahead of the field
The top-ranked assignee holds 5,093 records against a fifth-place figure of 1,489 and a tenth-place figure of 853 — a steep drop-off after the leader, then a more gradual taper through the rest of the ranked group.
Automotive groups co-file within their own supply chain
The strongest co-assignee pairing in this landscape links a major automaker with its in-house electronics supplier, recurring across 26 shared records; a second pairing links the same automaker with its transmission affiliate at 21. These patterns point to internal joint development rather than cross-industry alliances.
Recent-year counts have thinned across the board
Several of the most active historical filers show zero or near-zero records in the latest tracked year, with year-on-year changes as steep as -100%. Given the roughly 18-month publication lag, this reads as a data-visibility gap for the newest filings rather than firms exiting the space.
| Assignee | Recent year | YoY |
|---|---|---|
| Huawei Digital Power Technologies Co., Ltd. | 4 | -43% |
| Honda Motor Co., Ltd. | 1 | -95% |
| Strong Force IoT Portfolio 2016, LLC | 1 | -67% |
| Toyota Motor Corporation | 0 | -100% |
| General Electric Company | 0 | — |
| Denso Corporation | 0 | -100% |
| Mitsubishi Electric Corporation | 0 | -100% |
| Nissan Motor Co., Ltd. | 0 | — |
Where to take this analysis
The landscape points to a dense core and a thinner periphery; the next step is deciding where a specific filing or freedom-to-operate question actually sits.
Check a specific claim against the dense classes
If a draft claim touches H02J or H02M language, run it against the records in those subclasses specifically rather than the field as a whole — that is where density is highest and where broad claims are most likely to collide with prior art.
Explore the IPC breakdownMap the white-space chips against your own roadmap
The under-claimed sub-areas listed above are starting points, not conclusions — pressure-test each one against your own technical roadmap and freedom-to-operate needs before committing drafting time.
Open Eureka for a deeper searchCommon questions about this landscape
The ranked assignee list in this dataset is led by a single company with 5,093 records, well ahead of the fifth-ranked filer at 1,489 and the tenth-ranked filer at 853. That said, the top 10 combined hold only 22.2% of the full 84,052-record dataset, so no filer controls a majority of the field. The bulk of activity sits with a long tail of assignees below the top ranks, which matters for anyone assessing freedom-to-operate risk from a single incumbent.
Filings peaked at 1,096 in 2019 and had declined to 595 by 2024, a complete three-year drop of 38% from the 2021 level of 966. However, the two most recent years in this dataset, 2025 and 2026, are still understated because patent publication typically lags filing by around 18 months. The honest read is that the field has cooled from its 2019 peak, but the very latest trend cannot yet be confirmed from this data.
H02J, covering power supply and grid systems, is the single largest class at 8.9% of the 84,052 records in scope, more than double the next class. H02M power conversion follows at 3.8%, then H01M batteries and fuel cells at 2.9%. Because records commonly carry more than one IPC code, these percentages overlap and do not need to sum to 100%, but the ranking itself is a reliable guide to where claim density is concentrated.
The densest filing sits in grid-facing power supply architecture and AC/DC conversion, which leaves narrower, more specific branches comparatively open — areas such as current-sensor fault isolation, adaptive switching-frequency control loops, and thermal management integrated into grid-side power stages. These are not guarantees of clear freedom-to-operate, but they are branches where the raw filing density is visibly lower than the H02J and H02M core. Any claim drafted there should still be checked against the specific prior art in that sub-area before relying on the gap.
The most-cited records in this dataset skew toward older filings, since citation counts accumulate over time and older patents have simply had longer to be cited. That means high citation counts are a signal of historical influence within the searched corpus, not necessarily of current technical importance or of what a competitor is actively pursuing today. Use the citation table to understand which foundational filings shaped this field, and use the recent filing trend separately to judge current activity.
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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.