GaN Power Device Testing Patent Snapshot 2026
The GaN power device testing patent space is highly nascent and heavily concentrated, with 4 patent families on record and Huawei Digital Power Technology holding the leading position. The field is still expanding on a multi-year basis, though annual volume has eased from its 2022 peak and recent years remain understated by publication lag.
Huawei Digital Power leads a nascent, highly concentrated field
With 4 patent families in scope, GaN power device testing is at an early stage of patent accumulation. Huawei Digital Power Technology Co. Ltd. ranks first with 2 patent families, followed by Nanjing University and the Suzhou Institute of Nano-Tech and Nano-Bionics (Chinese Academy of Sciences), each with 1 patent family.
The top five filers account for 100% of the combined total among the ranked applicants visible in this query, reflecting extreme concentration typical of an emerging, low-volume domain. There is effectively no second tier yet; all three applicants are separated by a single family at most.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Huawei Digital Power Technology Co. Ltd. | 2 | |
| 2 | Nanjing University | 1 | |
| 3 | SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE AC… | 1 |
Huawei Digital Power’s leading position signals that industrial players are already staking IP claims alongside academic entrants. This dual presence of a major device manufacturer and two research institutions suggests the field is transitioning from exploratory academic work toward applied testing methodology.
The most recent 18–24 months of filing activity are likely undercounted due to standard patent publication lag; apparent inactivity in 2023–2025 should not be interpreted as a slowdown. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Growth-stage field with electric measurement as the dominant technical branch
The annual filing trend and technology composition together reveal a field that is growing on a multi-year basis from a small base, with G01R (electric and magnetic measurement) as the clear visible branch across all applicants.
Annual filing trend
Filing activity was zero from 2017 to 2019, rose to a first publication in 2020, peaked at 2 filings in 2022, and shows a further record in 2025. The lifecycle is classified as Growth, with the recent three-year window above the prior three-year window by 100%. Annual volume has eased from the 2022 peak, and years from 2023 onward are further understated by publication lag — the apparent gap should not be read as stagnation.
↗ Hover for values · click a bar to ask EurekaTechnology composition
G01R (electric and magnetic measurement) is the visible branch, appearing in 3 patent records, followed by H01L (semiconductor devices) with 2. G01K (temperature measurement) and H10N (other electric solid-state devices) each appear once, indicating that while electrical characterisation is the core methodology, thermal and novel device-structure angles are beginning to appear.
↗ 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.
Gallium nitride-based chip, chip preparation metho…
This application provides a chip, a gallium nitride power device, and a power drive circuit. The chip includes a substrate and a plurality of gallium nitride components disposed on the substrate. The plurality of gallium nitride components are arranged in an array. The gallium nitride component includes an active region and a non-active region separately… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | GaN功率器件及其可靠性测试方法 | 13 |
| 2 | Gallium nitride-based chip, chip preparation metho… | 1 |
| 3 | An automated dynamic high temperature operating li… | 1 |
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.
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.
Huawei Digital Power Technology Co. Ltd.
Huawei Digital Power Technology holds 2 patent families, covering G01R 31 (electrical measurement), H01L 21, and H01L 29 (semiconductor device process and structure), indicating an integrated approach that spans both testing methodology and device structure characterisation. The applicant is flagged as a new entrant with a rising trajectory, suggesting IP activity in this specific sub-field began recently.
families: 2Suzhou Institute of Nano-Tech and Nano-Bionics (CAS)
The Suzhou Institute of Nano-Tech and Nano-Bionics holds 1 patent family, with coverage spanning G01K 7 (temperature measurement), G01R 31 (electrical measurement), and H01L 29 (semiconductor devices) — the broadest single-applicant technology footprint in the corpus relative to family count. Nanjing University also holds 1 patent family, focused on G01R 31.
families: 1Frequently asked questions
The corpus currently contains 4 patent families in scope. This is a nascent field and the count is likely understated for the most recent 18–24 months due to standard patent publication lag.
Huawei Digital Power Technology Co. Ltd. leads with 2 patent families, followed by Nanjing University and the Suzhou Institute of Nano-Tech and Nano-Bionics (Chinese Academy of Sciences), each with 1 patent family.
G01R (electric and magnetic measurement) is the visible branch, appearing in 3 patent records. H01L (semiconductor devices) appears in 2 records, while G01K (temperature measurement) and H10N (other electric solid-state devices) each appear in 1 record.
The field is classified as Growth. Recent three-year filings sit above the prior three-year window by 100%, but annual volume has eased from the 2022 peak. The most recent years are further understated by publication lag, so the easing should not be interpreted as a decline.
China leads with 2 patent records, followed by the United States and WIPO (PCT) with 1 each. The PCT filing indicates at least one applicant is pursuing international coverage.
One co-filing is on record, linking individual inventor Gilberto Curatola with Huawei Digital Power Technology Co. Ltd. for 1 jointly filed patent family. The collaboration ecosystem is otherwise too small to characterise structurally.
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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.
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