FinFET Gate Dielectric Patent Landscape 2026
TSMC commands a dominant position in FinFET gate dielectric patents, with the top five filers collectively accounting for 67% of the hundred largest filers’ combined total. The field has passed its 2017 peak and annual filing volume has eased substantially, signaling a maturing core technology where strategic positioning in adjacent branches may offer the clearest remaining differentiation.
TSMC leads a highly concentrated field with a commanding first-mover position
Taiwan Semiconductor Manufacturing Company (TSMC) sits at the top of the applicant ranking with 1,059 patent records, a total that exceeds the next-ranked applicant — IBM at 305 patent records — by more than three to one.
The top five filers collectively represent 67% of the hundred largest filers’ combined total, indicating a field with an unusually steep concentration gradient. The tier gap between TSMC and the rest of the field is substantial enough that no single challenger’s portfolio is close to matching TSMC’s scope.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Taiwan Semiconductor Manufacturing Company (TSMC) | 1,059 | |
| 2 | IBM Corporation | 305 | |
| 3 | GlobalFoundries US Inc. | 233 | |
| 4 | GlobalFoundries Inc. | 110 | |
| 5 | SMIC (Shanghai) | 107 | |
| 6 | Intel Corporation | 86 | |
| 7 | Institute of Microelectronics, Chinese Academy of Sciences | 69 | |
| 8 | Samsung Electronics Co., Ltd. | 62 | |
| 9 | Applied Materials, Inc. | 51 | |
| 10 | Adeia Semiconductor Solutions LLC | 42 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | SMIC (Beijing) | 40 | |
| 12 | United Microelectronics Corporation (UMC) | 39 | |
| 13 | Silicon Storage Technology, Inc. | 33 | |
| 14 | Infineon Technologies AG | 26 | |
| 15 | Renesas Electronics Corporation | 25 | |
| 16 | Alsephina Innovations Inc. | 23 | |
| 17 | Synopsys, Inc. | 22 | |
| 18 | Shanghai Huali Integrated Circuit Corporation | 19 | |
| 19 | SHANGHAI INTEGRATED CIRCUIT RESEARCH & DEVELOPMENT… | 18 | |
| 20 | Micron Technology, Inc. | 17 |
TSMC’s lead implies that any entrant or challenger seeking to work around existing art faces a dense thicket in core H01L semiconductor device classes. IBM and GlobalFoundries (combined entities) form a distant but meaningful second tier, and their co-filing history with each other and with STMicroelectronics suggests that consortium-style R&D has already shaped this landscape.
Publication lag means filings from the most recent 18–24 months are under-counted in the corpus; apparent near-term volume should be interpreted cautiously. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity has declined from its 2017 peak; semiconductor device classes dominate the technology mix
Two complementary views reveal where innovation energy has been and where pockets of relative sparsity remain: the annual filing trend shows the trajectory of overall activity, and the IPC composition map shows how that activity is distributed across technology branches.
Annual filing trend
Annual filings peaked in 2017 at 246 and have declined steadily through the observable window, reaching 41 in 2024. Figures for 2024 and 2025 are materially affected by publication lag and should not be read as the full picture for those years. The multi-year trend is nonetheless clearly past its peak, consistent with a maturing core technology.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (Semiconductor devices) accounts for the large majority of patent records, reflecting the field’s tight focus on device fabrication and process integration. H10D (Semiconductor devices, general) and H10B (Memory device manufacture) form a secondary tier, while branches such as H10P, G11C (Static and digital memories), H10W, H10N, B82Y (Nanotechnology), and C23C (Coating and surface deposition) each represent smaller, relatively sparse fractions of total activity.
↗ 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.
Method of fabricating gate oxide of semiconductor …
A method of fabricating a semiconductor device includes forming a semiconductor fin comprising a channel region for a fin field effect transistor (finFET). A gate oxide layer is then formed on the channel. The gate oxide layer is treated with a nitrogen containing agent so as to form a nitrogenous layer and an interfacial layer. The nitrogenous layer is… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Germanium FinFETs with metal gates and stressors | 544 |
| 2 | FinFET/tri-gate channel doping for multiple thresh… | 512 |
| 3 | N Metal for FinFET | 485 |
| 4 | Germanium FinFETs with Metal Gates and Stressors | 483 |
| 5 | Fabrication of a vertical fin field effect transis… | 429 |
| 6 | Enabling enhanced reliability and mobility for rep… | 411 |
| 7 | FinFET parasitic capacitance reduction using air gap | 372 |
| 8 | FinFET with bottom SiGe layer in source/drain | 351 |
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 structure means for R&D investment and competitive positioning
The combination of a dominant incumbent, declining annual filings, and sparse adjacent branches defines the strategic landscape for any team entering or expanding in FinFET gate dielectric technology.
Field in decline from a 2017 peak — core claims are largely staked
The lifecycle stage is classified as Decline, with annual filings easing back from the 2017 peak of 246. New entrants face a dense prior-art environment in core H01L classes. R&D investment is more defensible in adjacent or application-specific branches where the claim density is lower.
Lifecycle: DeclineTSMC’s 1,059-record lead creates a formidable freedom-to-operate challenge
The top five filers hold 67% of the hundred largest filers’ combined patent records, with TSMC alone at 1,059 records. IBM at 305 and GlobalFoundries entities at 233 and 110 records form a distant second tier. Any new R&D program should begin with a thorough freedom-to-operate review against TSMC’s and IBM’s portfolios before committing to core gate-dielectric process routes.
High concentrationIBM–GlobalFoundries and SMIC’s internal co-filing are the dominant co-applicant patterns
The most active co-filing pair is GlobalFoundries (parent) with GlobalFoundries US, sharing 40 co-filed records, mirrored by SMIC Shanghai and SMIC Beijing at 40. IBM and GlobalFoundries co-filed 32 records, reflecting their former manufacturing partnership. IBM also co-filed with STMicroelectronics (6 records) and GlobalFoundries co-filed with both STMicroelectronics (9 records) and the French CEA (2 records), indicating European research consortium linkages. These clusters suggest that future licensing or joint development conversations would most naturally flow through this IBM–GlobalFoundries–STMicro axis.
Consortium clustersUS leads filings; China and Taiwan are meaningful secondary jurisdictions
The United States is the leading filing jurisdiction with 1,473 patent records. China follows with 433 records and Taiwan with 325, reflecting the manufacturing geography of the leading applicants. South Korea, Germany, Japan, and WIPO PCT filings each represent smaller but non-trivial shares. An R&D team should prioritize US and China prosecution strategies given where both incumbents and potential infringers operate.
US-primary, China-secondaryGo 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 |
|---|---|---|
| GlobalFoundries Inc. | GlobalFoundries US Inc. | 40 |
| SMIC (Shanghai) | SMIC (Beijing) | 40 |
| IBM Corporation | GlobalFoundries Inc. | 32 |
| GlobalFoundries Inc. | STMicroelectronics Inc. | 9 |
| IBM Corporation | STMicroelectronics Inc. | 6 |
| IBM Corporation | IBM China Co., Ltd. | 4 |
| IBM Corporation | IBM United Kingdom Ltd. | 3 |
| IBM Corporation | GlobalFoundries US Inc. | 2 |
| GlobalFoundries Inc. | CEA (French Alternative Energies and Atomic Energy Commission) | 2 |
| Institute of Microelectronics, Chinese Academy of Sciences | Zhu Huilong | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
TSMC anchors the field; IBM and GlobalFoundries form a distant but historically active second tier
The leader and primary challenger differ not just in scale but in trajectory: TSMC’s recent filing rate has declined 48% against its prior three-year baseline, while IBM has contracted even more sharply, suggesting that both incumbents have moved past peak investment in this specific area.
Taiwan Semiconductor Manufacturing Company
TSMC holds 1,059 patent records, the largest portfolio in this space by a wide margin. Its technology focus is concentrated in H01L 29 (semiconductor devices) and H01L 21 (fabrication processes), with H01L 27 (integrated circuits) as a tertiary focus — covering the full device-to-process stack. Recent filing momentum is down 48% versus the prior three-year period, consistent with the field’s overall post-peak trajectory rather than an exit from the technology.
patent records: 1,059International Business Machines Corporation
IBM holds 305 patent records across its global entities and has historically been the most active co-filer with GlobalFoundries (32 co-filed records) and STMicroelectronics (6 records). Its technology emphasis mirrors TSMC’s — H01L 21 and H01L 29 dominate — but its recent filing rate has declined 79% versus the prior three-year baseline, the steepest contraction among the leading applicants, reflecting IBM’s well-documented exit from semiconductor manufacturing.
patent records: 305| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Taiwan Semiconductor Manufacturing Company (TSMC) | 111 | ▼ -48% |
| IBM Corporation | 9 | ▼ -79% |
| Intel Corporation | 8 | ▼ -56% |
| GlobalFoundries US Inc. | 3 | ▼ -70% |
| Applied Materials, Inc. | 4 | ▼ -67% |
| Samsung Electronics Co., Ltd. | 4 | ▲ new entrant |
Under-served branches adjacent to the core FinFET gate dielectric space
Several IPC branches appear at the margins of the corpus with low record counts relative to the dominant H01L class. These are observations of relative sparsity; they represent potential entry points only where there is also plausible technical value and a realistic path from FinFET gate dielectric expertise.
H10P — Power and wide-bandgap semiconductor devices
H10P accounts for 150 patent records, roughly 4% of the technology composition — sparse relative to the dominant H01L branches. Gate dielectric engineering is critical for wide-bandgap devices (GaN, SiC) where leakage and interface-state density directly limit device reliability. Teams with FinFET high-k dielectric process knowledge could translate that capability into power device applications, an area where incumbent portfolios in this corpus are thin.
Search this in Eureka →B82Y — Nanotechnology applications
B82Y appears with only 16 patent records in the corpus, a notably sparse footprint given that FinFET scaling increasingly intersects with nanoscale materials such as 2D channel materials and atomic-layer dielectrics. The low count suggests that nano-materials-level gate dielectric work (e.g., MoS2, hBN interlayers) has not yet been heavily claimed in this corpus, offering a potential differentiation path for teams with materials science depth. Entry barriers here are more scientific than legal.
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 21 · Semiconductor devices | H01L 29 · Semiconductor devices | H01L 27 · Semiconductor devices | H10D 64 · Semiconductor devices (general) | H10D 30 · Semiconductor devices (general) |
|---|---|---|---|---|---|
| Taiwan Semiconductor Manufacturing Company (TSMC) | Strong · 902 | Strong · 919 | Moderate · 379 | Moderate · 249 | Moderate · 249 |
| IBM Corporation | Strong · 405 | Strong · 390 | Strong · 233 | Moderate · 84 | Emerging · 53 |
| GlobalFoundries Inc. | Strong · 197 | Strong · 184 | Moderate · 84 | Emerging · 25 | Emerging · 26 |
| Intel Corporation | Strong · 60 | Strong · 82 | Moderate · 33 | Moderate · 26 | Moderate · 26 |
| SMIC (Shanghai) | Strong · 103 | Strong · 64 | Moderate · 27 | Absent | Absent |
| GlobalFoundries US Inc. | Strong · 58 | Strong · 44 | Absent | Emerging · 5 | Emerging · 6 |
| Samsung Electronics Co., Ltd. | Strong · 40 | Strong · 40 | Strong · 21 | Emerging · 6 | Emerging · 6 |
Frequently asked questions
Taiwan Semiconductor Manufacturing Company (TSMC) leads with 1,059 patent records, followed by IBM at 305 and GlobalFoundries entities at 233 (US) and 110 (parent), based on the top-100 applicant ranking in this corpus.
The field peaked in 2017 with 246 annual filings and has declined steadily since. The lifecycle stage is classified as Decline. Figures for the most recent 18–24 months are affected by publication lag, so the true current rate is somewhat higher than raw recent counts suggest, but the multi-year trend is clearly past its peak.
The United States is the leading filing jurisdiction with 1,473 patent records. China follows with 433 and Taiwan with 325. South Korea, Germany, Japan, and WIPO PCT filings each contribute smaller but meaningful volumes, reflecting the geographic spread of both manufacturers and potential infringers.
The most active co-filing pairs are GlobalFoundries (parent) with GlobalFoundries US (40 co-filed records) and SMIC Shanghai with SMIC Beijing (40 co-filed records). IBM and GlobalFoundries co-filed 32 records. IBM also co-filed with STMicroelectronics (6 records) and GlobalFoundries co-filed with STMicroelectronics (9 records) and with CEA (2 records).
H10P (power and wide-bandgap semiconductor devices) accounts for about 4% of records in the corpus, and B82Y (nanotechnology applications) appears in only 16 records — both sparse relative to the dominant H01L classes. G11C (static and digital memories) and H10W are also comparatively under-served.
The most-cited works identified in the corpus include patents on Germanium FinFETs with metal gates and stressors (544 citations), FinFET/tri-gate channel doping for multiple thresholds (512 citations), N-metal for FinFET (485 citations), and FinFET parasitic capacitance reduction using air gaps (372 citations), pointing to gate-metal engineering, channel doping, and parasitic management as foundational reference points.
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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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