GaN Power HEMT Patent Landscape 2026
GaN Systems dominates a moderately concentrated field, holding the leading position among all ranked filers; annual filing volume peaked in 2020 and has since eased, though the multi-year corpus continues to expand. The United States is the primary jurisdiction by a wide margin, and semiconductor device structure remains the overwhelmingly dominant technical branch, leaving adjacent circuit and power-conversion branches comparatively sparse.
GaN Systems leads a moderately concentrated field with a clear tier gap below the top two
GaN Systems holds the top position in the applicant ranking, followed by Cambridge GaN Devices Limited in second place. The top five filers together account for 35% of the combined total of the hundred largest filers, indicating moderate rather than extreme concentration.
China, Infineon Technologies Austria, and individual inventor Huang Chih Shu form a mid-tier cluster, while the remainder of the top twenty are single-digit filers.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | GaN Systems Inc. | 31 | |
| 2 | Cambridge GaN Devices Limited | 15 | |
| 3 | Huawei Technologies Co., Ltd. | 10 | |
| 4 | UNIV OF ELECTRONICS SCI & TECH OF CHINA | 8 | |
| 5 | Infineon Technologies Austria AG | 7 | |
| 6 | HUANG CHIH SHU | 7 | |
| 7 | Peking University | 6 | |
| 8 | Fujitsu Limited | 5 | |
| 9 | South China University of Technology | 5 | |
| 10 | HELLA GMBH & CO KGAA | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Zhejiang University | 4 | |
| 12 | X-FAB France SAS | 3 | |
| 13 | AGENCY FOR SCI TECH & RES | 3 | |
| 14 | University of Florida Research Foundation Inc. | 3 | |
| 15 | Nanjing University | 3 | |
| 16 | Southeast University | 3 | |
| 17 | STMicroelectronics International NV | 3 | |
| 18 | Jiangsu GaN Intelligent Systems Co., Ltd. | 3 | |
| 19 | Efficient Power Conversion Corporation | 3 | |
| 20 | Taiwan Semiconductor Manufacturing Co., Ltd. | 3 |
GaN Systems’ lead — reinforced by its focus on semiconductor device structures and packaging — signals that the core HEMT device architecture space is already heavily staked out, making incremental device-level claims increasingly difficult to differentiate without targeting adjacent applications or circuit integration.
Filing counts for 2024 and 2025 are substantially under-represented due to standard patent publication lag; apparent softness in those years should not be read as a real trend reversal. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume peaked in 2020 and semiconductor device structure dominates the technology mix
The annual trend chart reveals a filing surge into 2020 followed by gradual easing, while the technology composition chart shows that semiconductor device classification accounts for the large majority of records, with several adjacent branches remaining comparatively thin.
Annual filing trend
Filings climbed from 7 records in 2017 to a peak of 32 in 2020, then stepped down through 2022 before a partial recovery in 2023. The 2024 and 2025 bars are almost certainly under-counted due to publication lag and should not be treated as evidence of further decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (semiconductor devices) dominates the IPC distribution with 200 records, far ahead of H10D at 34 and H03K (pulse technique and logic circuits) at 23. Power conversion (H02M) and amplifiers (H03F) together account for only 17 records, confirming that device-level innovation has been the primary focus and circuit/system integration remains comparatively underdeveloped.
↗ 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.
Normally-on GAN HEMT integration on monolithic p-G…
Methods, systems, and apparatuses for normally-on GaN high electron mobility transistors (HEMT) integration on monolithic p-GaN integrated circuits (ICs) platforms are provided. In particular, the integrated circuit platforms may include both enhancement mode and depletion mode HEMT power devices in monolithically integrated p-GaN power ICs. Exemplary… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | III-Nitride High Electron Mobility Transistor Stru… | 98 |
| 2 | EMBEDDED PACKAGING FOR DEVICES AND SYSTEMS COMPRIS… | 78 |
| 3 | GaN SEMICONDUCTOR DEVICE STRUCTURE AND METHOD OF F… | 75 |
| 4 | PACKAGING SOLUTIONS FOR DEVICES AND SYSTEMS COMPRI… | 70 |
| 5 | Enhancement mode HEMT for digital and analog appli… | 59 |
| 6 | Gallium Nitride Semiconductor Devices and Method M… | 40 |
| 7 | Gallium Nitride Power Devices Using Island Topogra… | 39 |
| 8 | Power semiconductor device with an auxiliary gate … | 37 |
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 a post-peak filing trend, a concentrated leader set, and thin adjacent branches points to a field where the core device space is maturing while system-level and circuit-integration opportunities remain relatively open.
Field has passed its 2020 peak; core device space is consolidating
The lifecycle evidence indicates that annual filings are easing back from the 2020 peak. This is consistent with a consolidating core: the dominant semiconductor device structure branch is densely populated, and new entrants will find it harder to carve out differentiated positions at the transistor-architecture level. R&D investment is better directed toward integration and application layers where density is lower.
Past-peak · consolidatingTop two applicants hold a commanding lead; mid-tier is fragmented
GaN Systems and Cambridge GaN Devices Limited together account for a disproportionate share of the top-100 filers’ combined records. Below them, no single entity has yet assembled a scale position comparable to the leaders. This fragmentation in the mid-tier creates both competitive risk (many small holders each blocking narrow sub-spaces) and potential for portfolio consolidation through licensing or acquisition.
Moderate concentrationCo-filing activity is minimal; ecosystem is largely solo-inventor driven
The collaboration evidence shows one co-filing relationship: Huang Chih Shu and the corresponding Chinese-script name for the same inventor, representing a single co-filed record. No substantive cross-organization co-filing clusters are visible in the evidence. This absence of collaborative IP activity suggests the field lacks established consortia or joint-development agreements at the patent level, which may signal an opportunity for a well-resourced entrant to anchor a partnership ecosystem.
Low collaboration densityUnited States is the primary jurisdiction; China is the second-largest filing destination
The United States leads with 98 patent records, followed by China at 52 and WIPO (PCT) at 19. Europe (EPO) has 14 records, while Taiwan, India, the United Kingdom, and Japan each have single-digit coverage. The US-China split reflects both the major commercial markets and the home jurisdictions of the leading applicants. Applicants seeking broad protection should note that PCT and EPO coverage remains relatively thin relative to the bilateral US-China footprint.
US-China duopolyGo 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.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| HUANG CHIH SHU | Huang Chih Shu | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
GaN Systems leads on device structure and packaging; Cambridge GaN Devices distinguishes itself with solid-state integration
Two applicants sit clearly above the field. GaN Systems concentrates on semiconductor device structures and packaging, while Cambridge GaN Devices Limited adds a notable presence in other electric solid-state devices (H10N), suggesting a distinct integration approach.
GaN Systems
GaN Systems holds 31 patent records, the largest count in the ranked field. Its technology emphasis sits squarely in H01L 29 (semiconductor devices — transistor structures) and H01L 23 (semiconductor packaging), reflecting a vertically integrated device-and-package strategy. Momentum shows a recent-period trend of –73% versus the prior window, consistent with the field’s post-2020 easing and possibly indicating a maturing portfolio rather than strategic withdrawal.
31 patent recordsCambridge GaN Devices Limited
Cambridge GaN Devices Limited holds 15 patent records and is the second-ranked applicant. Its filings spread across H01L 27 (integrated circuits), H01L 29 (transistor structures), and H10N 97 (other solid-state devices), pointing to a broader device-and-integration scope compared to GaN Systems’ packaging-heavy focus. Momentum data for this entity is not separately itemized in the evidence, so trajectory is evidence pending beyond the ranking count.
15 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| GaN Systems Inc. | 3 | ▼ -73% |
| Huawei Technologies Co., Ltd. | 3 | ▲ new entrant |
| University of Electronic Science and Technology of China | 6 | ▲ new entrant |
| HUANG CHIH SHU | 2 | ▲ new entrant |
| Infineon Technologies Austria AG | 2 | ▲ new entrant |
| Peking University | 6 | ▲ new entrant |
| South China University of Technology | 1 | ▲ new entrant |
Pulse-technique circuits and power conversion are under-served relative to the device core
Several IPC branches adjacent to the dominant semiconductor device class carry substantially lower filing counts, suggesting these areas have not yet attracted the same level of patent activity and may warrant closer technical evaluation by teams working on GaN-based system integration.
H03K · Pulse technique & logic circuits
With 23 records and an 8% share of the IPC distribution, pulse technique and logic-circuit integration is the largest of the adjacent branches but still well below the H01L core. GaN HEMTs operating at high switching frequencies have direct relevance to gate-driver and logic-circuit design, yet this branch remains comparatively sparse. Teams developing GaN-specific gate-driver ICs or integrated logic functions may find this branch offers viable differentiation space with meaningful technical value.
Search this in Eureka →H02M · Power conversion (AC/DC etc.)
Power conversion (H02M) holds only 10 records at a 3% share, making it one of the thinnest branches despite GaN HEMTs being a primary enabling technology for high-efficiency DC-DC and AC-DC converters. The sparse filing density here, relative to the strong commercial pull of power-supply and EV charging applications, suggests that system-level converter topology work incorporating GaN switching devices has not yet been heavily claimed in this corpus. Entry via converter-architecture or control-method claims tied specifically to GaN HEMT characteristics appears technically plausible.
Search this in Eureka →How leading applicants differ across technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | H01L 29 · Semiconductor devices | H01L 21 · Semiconductor devices | H01L 27 · Semiconductor devices | H01L 23 · Semiconductor devices | H10D 62 · Semiconductor devices (general) |
|---|---|---|---|---|---|
| GaN Systems Inc. | Strong · 30 | Emerging · 6 | Emerging · 5 | Strong · 18 | Moderate · 12 |
| Cambridge GaN Devices Limited | Strong · 15 | Strong · 11 | Strong · 15 | Absent | Absent |
| Fujitsu Limited | Strong · 9 | Strong · 8 | Absent | Absent | Absent |
| HUANG CHIH SHU | Strong · 8 | Absent | Strong · 5 | Absent | Moderate · 2 |
| University of Electronic Science and Technology of China | Strong · 8 | Strong · 5 | Absent | Absent | Absent |
| Huawei Technologies Co., Ltd. | Strong · 10 | Absent | Absent | Emerging · 2 | Absent |
| Infineon Technologies Austria AG | Strong · 7 | Absent | Moderate · 2 | Absent | Moderate · 2 |
Frequently asked questions
The analysis covers 154 patent families in scope. The applicant ranking draws on patent records, and because a single family can be filed in multiple jurisdictions it can generate more than one record.
GaN Systems holds the top position with 31 patent records, ahead of Cambridge GaN Devices Limited with 15 and Huawei Technologies with 10. The top five filers together represent 35% of the combined total of the hundred largest filers.
Filing activity peaked at 32 records in 2020 and has eased since then. The lifecycle evidence characterizes the field as past-peak, with annual volume declining from that high. The most recent years (2024–2025) are under-counted due to publication lag and should not be read as indicative of the true current pace.
The United States leads with 98 patent records, followed by China with 52 and WIPO (PCT) with 19. Europe (EPO) has 14 records. Remaining jurisdictions — including Taiwan, India, the United Kingdom, and Japan — each have fewer than 10 records.
The highest-cited work covers III-Nitride HEMT structures (98 citations), embedded packaging for GaN devices (78 citations), GaN semiconductor device structure and fabrication (75 citations), and packaging solutions for GaN systems (70 citations). An enhancement-mode HEMT for digital and analog applications has 59 citations.
The two most accessible adjacent branches are H03K (pulse technique and logic circuits, 23 records, 8% share) and H02M (power conversion, 10 records, 3% share). Both are technically relevant to GaN HEMT applications in gate-driver design and high-efficiency power supplies, respectively, yet carry substantially lower filing density than the dominant H01L device branch.
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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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