GaN Power Devices Patent Landscape 2026
GaN Power Devices Patent Landscape in 2026
Wolfspeed leads a moderately concentrated field of 8,807 patent families, holding a clear margin over the next tier of university and industrial challengers. Annual filing volume peaked in 2021 and has since plateaued, signalling a mature but still broadly active technology arena.
Wolfspeed leads; the field is moderately concentrated across a deep challenger tier
Wolfspeed holds the top position with 855 patent families, nearly double the second-ranked applicant, Xidian University at 401 patent families. The top five filers together account for 24% of the hundred largest filers’ combined total, indicating a clear leader but not a monopolistic structure.
Below Wolfspeed a dense second tier spans Infineon Tech Austria (336), Intel (297), Fujitsu (287), and Murata (287), followed by a broad third tier that includes defence primes, fabless specialists, Chinese research universities, and IDMs. This multi-tier structure means no single challenger poses an immediate threat to the leader’s position, but competitive pressure is diffuse.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Wolfspeed Inc | 855 | |
| 2 | Xidian University | 401 | |
| 3 | Infineon Technologies Austria AG | 336 | |
| 4 | Intel Corporation | 297 | |
| 5 | Fujitsu Limited | 287 | |
| 6 | Murata Manufacturing Co., Ltd. | 287 | |
| 7 | Raytheon Company | 261 | |
| 8 | Texas Instruments Incorporated | 233 | |
| 9 | Mitsubishi Electric Corporation | 229 | |
| 10 | MACOM Technology Solutions Holdings Inc | 212 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Taiwan Semiconductor Manufacturing Co., Ltd. | 198 | |
| 12 | Efficient Power Conversion Corporation | 193 | |
| 13 | UNIV OF ELECTRONICS SCI & TECH OF CHINA | 184 | |
| 14 | HRL Laboratories LLC | 171 | |
| 15 | Infineon Technologies Americas Corp. | 153 | |
| 16 | NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP … | 151 | |
| 17 | Huawei Technologies Co., Ltd. | 150 | |
| 18 | Navitas Semiconductor Limited | 141 | |
| 19 | pSemi Corporation | 132 | |
| 20 | NXP USA Inc. | 131 |
Wolfspeed’s lead reflects deep device-level IP (H01L 29 and H01L 21 sub-classes dominate its portfolio), consistent with its position as a pure-play wide-bandgap foundry. Challengers such as Infineon Tech Austria and pSemi (Psemi Corp) are building complementary power-conversion circuit IP alongside device patents, suggesting integration strategies that could erode Wolfspeed’s system-level relevance over time.
Filing counts for 2024–2026 are structurally under-counted due to the standard 18-month publication lag; any apparent decline in those years should not be read as a real reduction in R&D activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume has plateaued near its 2021 peak; device IP dominates but power-circuit branches are growing
The annual trend and technology-composition charts together reveal a field that has reached volume maturity at the device level while diversifying into system and circuit sub-classes.
Annual filing trend
Filings rose from 843 in 2017, accelerated through 2019–2020, and peaked at 1,313 in 2021. Volume has eased since — 1,221 in 2022, 1,161 in 2023, 1,003 in 2024 — consistent with the maturity assessment. The 2025 and 2026 bars are heavily truncated by publication lag and should not be interpreted as a continuing decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (Semiconductor devices) dominates the composition, as expected for a device-centric field. H02M (Power conversion) is the second-largest branch, reflecting growing interest in GaN-based converter topologies. H03K (Pulse technique and logic circuits) and H03F (Amplifiers) occupy smaller but meaningful shares, pointing to RF and gate-driver applications beyond core power switching.
↗ 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.
Synchronous buck converter using a single gate dri…
A synchronous buck converter using a single gate drive control is provided and includes a drive circuit, a p-type gallium nitride (p-GaN) transistor switch module and an inductor. A gallium nitride power transistor is used as an upper side transistor switch, and a PMOS power transistor is used as a lower side transistor switch in the p-GaN transistor switch… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Nitride based transistors on semi-insulating silic… | 885 |
| 2 | Aluminum gallium nitride/gallium nitride high elec… | 560 |
| 3 | Advanced Heterojunction Devices and Methods of Man… | 556 |
| 4 | Insulating gate AlGaN/GaN HEMT | 541 |
| 5 | Group III nitride based FETs and HEMTs with reduce… | 509 |
| 6 | Diamond on iii-nitride device | 474 |
| 7 | Printable semiconductor structures and related met… | 460 |
| 8 | Controlled buckling structures in semiconductor in… | 448 |
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 patent structure means for GaN power device R&D strategy
The combination of a maturing filing curve, a clear leader, active academia-industry co-filing, and broad geographic coverage shapes where incremental and disruptive opportunities remain.
Field is at maturity — annual volume has eased from its 2021 peak
The lifecycle stage is assessed as Maturity, with annual filings plateauing near their 2021 peak of 1,313. This signals that core device architectures (HEMT, enhancement-mode, lateral structures) are heavily patented and that white space is shifting toward adjacent system-level and manufacturing sub-classes. New entrants face a densely mapped device IP landscape and should assess freedom-to-operate carefully before committing to standard device topologies.
Lifecycle: MaturityOne dominant leader, but a deep and diverse challenger tier keeps the field competitive
Wolfspeed’s 855-family portfolio is more than twice that of the second-ranked applicant. However, the top five filers hold only 24% of the hundred largest filers’ combined total, meaning the remainder of the ranking is spread across industrial incumbents, defence contractors, fabless companies, and Chinese research universities. This structure rewards both broad portfolio strategies (IDMs, foundries) and specialist positions (RF amplifiers, gate drivers, crystal growth).
Moderate concentrationCo-filing ties are strongest between Wolfspeed and UC Regents, and within Chinese university ecosystems
The most active co-filing pair is Wolfspeed and the Regents of the University of California, with 53 jointly filed patent families — the largest single collaboration in the dataset. Texas Instruments and its Japanese subsidiary share 39 families. Xidian University co-files extensively with its Guangzhou Research Institute (28 families) and Wuhu Research Institute (5 families), reflecting a hub-and-spoke model common in Chinese university IP strategy. Mitsubishi Electric and its European R&D centre account for 3 collaborative families.
Industry–academia tiesChina and the US are near-parity lead jurisdictions; PCT and EPO cover multi-regional bets
China leads in patent records filed, followed closely by the United States. WIPO PCT and Europe (EPO) are the primary vehicles for multi-jurisdictional protection. Japan and Taiwan round out the top five, reflecting the concentration of GaN substrate, foundry, and device manufacturing in the Asia-Pacific region. Secondary jurisdictions — Germany, Austria, India, Canada — indicate selective validation for high-value industrial and automotive markets.
CN · US · PCT · EP · JPGo 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 |
|---|---|---|
| Wolfspeed Inc | Regents of the University of California | 53 |
| Texas Instruments Incorporated | Texas Instruments Japan Limited | 39 |
| Fujitsu Limited | Fujitsu Semiconductor Limited | 29 |
| Xidian University | Xidian University Guangzhou Research Institute | 28 |
| University of Electronic Science and Technology of China | UESTC Guangdong Institute of Electronic Information Engineering | 13 |
| Xidian University | Xidian University Wuhu Research Institute | 5 |
| Xidian University | Beijing Times Minxin Technology Co., Ltd. | 4 |
| Xidian University | Beijing Microelectronics Technology Institute | 4 |
| Xidian University | ZTE Corporation | 3 |
| Mitsubishi Electric Corporation | Mitsubishi Electric R&D Centre Europe B.V. | 3 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Wolfspeed anchors device IP; Infineon Tech Austria is the fastest-rising industrial challenger
The top two players illustrate contrasting strategies: a pure-play wide-bandgap incumbent deepening its device portfolio, versus a power-semiconductor incumbent accelerating into GaN with strong circuit-level IP alongside device patents.
Wolfspeed Inc
Wolfspeed holds 855 patent families, concentrated in semiconductor device sub-classes H01L 29 and H01L 21, consistent with its foundry and epitaxy-focused strategy. Recent momentum shows a decline of 32% in the latest period versus the prior window, suggesting the portfolio is maturing rather than expanding rapidly — reinforcing the field-level lifecycle read.
families: 855Infineon Technologies Austria AG
Infineon Tech Austria ranks third overall with 336 patent families and shows the strongest recent momentum among major incumbents at +140% versus the prior period. Its technology emphasis spans H01L 29 (device structures), H02M 1 (power conversion front-end), and H01L 21 (fabrication processes), indicating a deliberate push to couple GaN device IP with converter circuit IP — a differentiated position relative to Wolfspeed’s device-only focus.
families: 336| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Wolfspeed Inc | 65 | ▼ -32% |
| Xidian University | 126 | ▼ -9% |
| Fujitsu Limited | 4 | ▲ new entrant |
| Infineon Technologies Austria AG | 72 | ▲ +140% |
| Intel Corporation | 25 | ▼ -65% |
| pSemi Corporation | 90 | ▼ -22% |
| Raytheon Company | 17 | ▼ -82% |
| Texas Instruments Incorporated | 50 | ▼ -47% |
Under-served branches in pulse/logic circuits, amplifiers, power supply systems, and crystal growth
Five IPC branches adjacent to the dominant H01L class carry relatively small shares of current activity. Each represents a combination of lower filing density and plausible technical relevance to GaN power device development.
H03K · Pulse technique and logic circuits
This branch accounts for a 5% share among the adjacent classes analysed, covering gate-driver ICs, switching waveform control, and dead-time logic — all critical to realising GaN’s fast-switching advantage in practical converters. The relatively low density compared to H01L suggests that circuit-level implementation IP for GaN gate drives is less mature than device IP, offering a plausible entry point for fabless or IDM players with circuit design capability.
Search this in Eureka →C30B · Crystal growth
Crystal growth (C30B) carries only a 1% share in the adjacent branch set, despite substrate quality being a primary determinant of GaN device performance and yield. This sparsity is an observation that substrate and bulk crystal IP is concentrated in a small number of specialised filers; it may reflect either high tacit-knowledge barriers or underutilised IP protection for process innovations in GaN-on-SiC and GaN-on-Si epitaxy. Players with proprietary growth processes could find room to formalise and protect those methods.
Search this in Eureka →How leading GaN filers differ by technology sub-class emphasis
Strength of each leader across the main technology routes.
| Player | H01L 29 · Semiconductor devices | H01L 21 · Semiconductor devices | H02M 1 · Power conversion (AC/DC etc.) | H01L 23 · Semiconductor devices | H01L 27 · Semiconductor devices |
|---|---|---|---|---|---|
| Wolfspeed Inc | Strong · 802 | Strong · 588 | Absent | Emerging · 121 | Emerging · 65 |
| Xidian University | Strong · 406 | Strong · 419 | Absent | Emerging · 63 | Emerging · 36 |
| Intel Corporation | Strong · 269 | Strong · 185 | Absent | Emerging · 42 | Moderate · 88 |
| Fujitsu Limited | Strong · 301 | Strong · 250 | Absent | Absent | Absent |
| Raytheon Company | Strong · 207 | Strong · 152 | Absent | Emerging · 39 | Moderate · 45 |
| Taiwan Semiconductor Manufacturing Co., Ltd. | Strong · 147 | Strong · 106 | Absent | Moderate · 36 | Moderate · 51 |
| Infineon Technologies Austria AG | Absent | Strong · 110 | Strong · 111 | Moderate · 50 | Moderate · 41 |
Frequently asked questions
Wolfspeed Inc leads with 855 patent families, approximately twice the portfolio of the second-ranked filer, Xidian University at 401 patent families.
The top five filers hold 24% of the hundred largest filers’ combined total. Below the clear leader, a dense second and third tier of industrial incumbents, defence contractors, and universities distributes competitive pressure broadly.
Annual filings peaked in 2021 at 1,313 and have eased since. The field is assessed at a Maturity lifecycle stage, meaning core device architectures are heavily covered; growth is shifting toward adjacent circuit, system, and manufacturing sub-classes. Recent-year data (2024–2026) is affected by publication lag and should not be read as a definitive decline.
China leads in patent records filed, followed closely by the United States. WIPO PCT and Europe (EPO) are the primary multi-regional filing routes, with Japan and Taiwan also significant.
Infineon Technologies Austria AG shows the strongest recent growth among major incumbents at +140% versus the prior period. Fujitsu is a new entrant in the recent window. By contrast, Raytheon (-82%), Intel (-65%), and Texas Instruments (-47%) have reduced recent filing rates.
H03K (Pulse technique and logic circuits) and C30B (Crystal growth) are identified as lower-density branches with plausible technical relevance. H03K is relevant to gate-driver and switching-control IP, while C30B covers substrate and epitaxy process innovations — both areas where GaN device performance is critically dependent on solutions that appear sparsely patented relative to the device layer itself.
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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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