FinFET Interconnect Material Substitution Patent Landscape
This field is heavily concentrated: Taiwan Semiconductor Manufacturing Co. (TSMC) alone accounts for the largest single share of ranked applicants, and the top five filers together hold 89% of the hundred largest filers’ combined patent records. Annual filing volume peaked in 2019 and has since eased significantly, signaling a maturing, post-peak innovation cycle in core FinFET interconnect material substitution.
TSMC leads a highly consolidated field with a wide gap to challengers
Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC) ranks first with 435 patent records, more than double the nearest rival, IBM, which holds 194 patent records. Intel Corp follows in third with 107 patent records, and Globalfoundries US Inc places fourth with 57 patent records.
The top five filers collectively represent 89% of the hundred largest filers’ combined total, indicating an unusually tight oligopoly. The gap between TSMC and IBM is large enough that no single challenger, acting alone, could close it within a typical multi-year R&D horizon without a strategic acquisition or licensing shift.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Taiwan Semiconductor Manufacturing Co. Ltd. | 435 | |
| 2 | International Business Machines Corporation | 194 | |
| 3 | Intel Corporation | 107 | |
| 4 | Globalfoundries US Inc. | 57 | |
| 5 | Adeia Semiconductor Solutions LLC | 29 | |
| 6 | Samsung Electronics Co. Ltd. | 23 | |
| 7 | Applied Materials Inc. | 11 | |
| 8 | Elpis Tech Inc. | 9 | |
| 9 | Avago Technologies International Sales Pte. Ltd. | 6 | |
| 10 | Sony Semiconductor Solutions Corporation | 6 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | United Microelectronics Corporation | 3 | |
| 12 | Qualcomm Inc. | 3 | |
| 13 | Semiwise | 2 | |
| 14 | Mago Barca IP LLC | 2 | |
| 15 | Semi Solutions LLC | 2 | |
| 16 | Micron Technology Inc. | 2 | |
| 17 | MediaTek Inc. | 2 | |
| 18 | IBM United Kingdom Ltd. | 2 | |
| 19 | Murthy Anand S. | 2 | |
| 20 | Wollochet Solutions LLC | 2 |
TSMC’s dominant position reflects its role as the leading high-volume manufacturer of advanced FinFET nodes; its patent posture here is primarily defensive and process-enabling. IBM and Intel, as the second and third-ranked filers, have historically contributed foundational architecture and materials-science IP, which explains their disproportionate presence in highly-cited references.
The most recent 18–24 months of filings are likely under-counted due to patent publication lag; figures for 2024–2025 should be treated as provisional minimums. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity peaked in 2019 and has contracted; semiconductor device classes dominate the technology mix
The annual filing trend and technology composition together reveal a field that moved through rapid growth between 2017 and 2019, then contracted sharply, while remaining almost entirely anchored in core semiconductor device classes.
Annual filing trend
Filings rose from 88 in 2017 to a peak of 132 in 2019, then fell to 67 in both 2020 and 2021, and continued declining to 49 in 2022, 47 in 2023, and 23 in 2024. The 2024–2025 counts are provisional due to publication lag and should not be read as the final level of activity for those years.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (Semiconductor devices) accounts for the largest share of classified patent records by a wide margin, followed by H10D (Semiconductor devices, general) and H10P. Lower-share branches including H10W, H10B (Memory device manufacture), H10N, and G11C (Static and digital memories) represent adjacent areas where coverage is comparatively sparse.
↗ 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.
Gate all-around FinFET device and a method of manu…
A method for manufacturing a fin field-effect transistor (FinFET) device, comprises patterning a first layer on a substrate to form at least one fin, patterning a second layer under the first layer to remove a portion of the second layer on sides of the at least one fin, forming a sacrificial gate electrode on the at least one fin, and a spacer on the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Barrier layer for FinFET channels | 603 |
| 2 | FINFET Structures and Methods of Forming the Same | 564 |
| 3 | Reduced resistance SiGe FinFET devices and method … | 334 |
| 4 | Barrier Layer for FinFET Channels | 261 |
| 5 | Finfets and methods for forming the same | 148 |
| 6 | FinFET Design Controlling Channel Thickness | 147 |
| 7 | Finfet process compatible native transistor | 138 |
| 8 | Bulk finfet with punchthrough stopper region and m… | 135 |
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 implies for R&D investment decisions
The field’s concentration, declining annual cadence, and narrow technology footprint each carry distinct implications for teams assessing where to build, license, or design around.
Post-peak decline: core FinFET interconnect IP is consolidating
The lifecycle stage is Decline, with annual filings easing back from the 2019 peak and a recent-window growth rate of –55%. New entrants face a dense prior-art landscape in the dominant H01L device classes. R&D investment is more defensible in adjacent or application-specific branches than in the already-crowded core device structures.
Lifecycle: DeclineFive filers hold 89% of the ranked cohort’s records
The top five filers — TSMC, IBM, Intel, Globalfoundries, and Adeia Semiconductor Solutions — collectively control 89% of the hundred largest filers’ combined patent records. This level of concentration means that freedom-to-operate analysis must engage directly with TSMC’s and IBM’s portfolios before any process or material change can be validated. Licensing or cross-licensing arrangements with these incumbents are likely prerequisites for new entrants.
High concentrationIBM and Globalfoundries are the most active co-filers; IBM anchors multiple bilateral relationships
The most active co-filing pair is IBM and Globalfoundries with 8 joint filings, reflecting their historical joint development program. IBM also co-filed with its own Chinese subsidiary (4 filings) and with IBM United Kingdom Ltd (2 filings), and with IBM Deutschland GmbH (1 filing). Intel co-filed 4 records with inventor Ghani Tahir. TSMC shows no collaborative filings in this evidence, consistent with its predominantly proprietary R&D model.
IBM–GF dominant pairUS filings overwhelmingly dominate; international coverage is thin
The United States is the lead filing jurisdiction with 772 patent records, far ahead of Germany at 43, WIPO (PCT) at 38, and EPO at 27. Taiwan, the home jurisdiction of the field’s dominant filer TSMC, accounts for only 5 records, suggesting that the primary IP protection strategy targets the US market and litigation venue. Teams seeking geographic arbitrage or freedom-to-operate outside the US may find comparatively lighter coverage in Asian and European jurisdictions.
US-centricGo 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 |
|---|---|---|
| International Business Machines Corporation | Globalfoundries Inc. | 8 |
| International Business Machines Corporation | IBM China Co. Ltd. | 4 |
| GHANI TAHIR | Intel Corporation | 4 |
| International Business Machines Corporation | IBM United Kingdom Ltd. | 2 |
| International Business Machines Corporation | IBM Deutschland GmbH | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
TSMC and IBM lead on volume; both show declining momentum from peak years
The two dominant players differ in their role: TSMC’s portfolio is process-manufacturing-oriented across H01L 29 and H01L 21, while IBM’s overlapping focus reflects its foundational materials and device-architecture research, much of it developed in partnership with Globalfoundries.
Taiwan Semiconductor Manufacturing Co. Ltd.
TSMC holds 435 patent records, the largest total in the ranked cohort by a factor of more than two. Its technology emphasis is concentrated in H01L 29, H01L 21, and H01L 27 — core semiconductor device structure and fabrication classes. Recent momentum shows a –49% decline versus the prior period, consistent with the field-wide post-2019 contraction and TSMC’s shift of leading-edge R&D toward gate-all-around and beyond-FinFET architectures.
patent records: 435International Business Machines Corporation
IBM holds 194 patent records and focuses on the same H01L 29, H01L 21, and H01L 27 classes, reflecting its deep semiconductor materials-science heritage. Its recent momentum shows a steep –81% decline, the sharpest among the major incumbents, which aligns with IBM’s well-documented reduction of its own semiconductor fabrication activities and transfer of process IP to partners. IBM remains the most active collaborative filer, anchoring the IBM–Globalfoundries co-development record.
patent records: 194| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Taiwan Semiconductor Manufacturing Co. Ltd. | 82 | ▼ -49% |
| International Business Machines Corporation | 10 | ▼ -81% |
| Intel Corporation | 11 | ▼ -52% |
| Applied Materials Inc. | 1 | ▲ new entrant |
| Samsung Electronics Co. Ltd. | 2 | ▲ new entrant |
| Sony Semiconductor Solutions Corporation | 2 | ▲ new entrant |
| Globalfoundries US Inc. | 4 | ▲ new entrant |
Under-served branches adjacent to the dominant H01L core
Several IPC branches appear at the periphery of the current corpus with comparatively low patent-record counts. These are observations of relative sparsity; whether they represent actionable opportunities depends on technical fit and entry feasibility.
H10B · Memory device manufacture
H10B accounts for 48 patent records and a 3% share of classified records in this corpus — sparse relative to the dominant H01L classes. As FinFET-based SRAM and embedded memory cells increasingly require low-resistance metal fill and barrier-layer substitution, the intersection of FinFET interconnect materials with memory-specific fabrication constraints is technically plausible. Incumbent memory-focused filers such as Samsung Electronics (which already shows H10B10 in its tech focus) and Micron Technology are natural entry points, and the low existing coverage suggests room for differentiated filings targeting memory-cell integration flows.
Search this in Eureka →H10N · Other electric solid-state devices
H10N holds only 15 patent records and a 1% share, making it the sparsest named branch in the whitespace list. This class covers non-standard solid-state device types — including thermoelectric, piezoelectric, and tunnel-junction devices — where FinFET-compatible low-resistance interconnect materials could enable new integration schemes. The sparse coverage and the absence of any dominant incumbent filing in this branch mean that a targeted program here faces lower freedom-to-operate risk, though the commercial volume addressable is narrower than in the core device classes.
Search this in Eureka →How leaders differ by technology route across H01L sub-classes
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 | H10D 62 · Semiconductor devices (general) | H10D 84 · Semiconductor devices (general) |
|---|---|---|---|---|---|
| Taiwan Semiconductor Manufacturing Co. Ltd. | Strong · 423 | Strong · 400 | Strong · 215 | Moderate · 186 | Moderate · 170 |
| International Business Machines Corporation | Strong · 256 | Strong · 203 | Moderate · 107 | Moderate · 82 | Moderate · 62 |
| Intel Corporation | Strong · 104 | Strong · 72 | Moderate · 48 | Moderate · 25 | Emerging · 19 |
| Globalfoundries Inc. | Strong · 35 | Strong · 25 | Strong · 18 | Moderate · 9 | Emerging · 7 |
| Samsung Electronics Co. Ltd. | Strong · 10 | Absent | Moderate · 5 | Moderate · 3 | Moderate · 3 |
| Applied Materials Inc. | Strong · 11 | Strong · 8 | Absent | Absent | Absent |
Frequently asked questions
The corpus contains 597 patent families in scope for this topic.
Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC) leads with 435 patent records, more than double the second-ranked filer, International Business Machines Corporation, which holds 194 patent records.
Annual filing activity peaked in 2019 at 132 records and has declined since, reaching 47 in 2023 and 23 in 2024. The lifecycle stage is classified as Decline. The most recent counts are provisional due to publication lag.
The United States is overwhelmingly the lead filing jurisdiction with 772 patent records. Germany follows at 43, WIPO (PCT) at 38, and the European Patent Office at 27. Taiwan and the United Kingdom each account for 5 records.
IBM and Globalfoundries are the most active co-filing pair with 8 joint filings, reflecting their historical joint development program. IBM also co-filed with its Chinese subsidiary (4 filings), IBM United Kingdom Ltd (2 filings), and IBM Deutschland GmbH (1 filing). Intel co-filed 4 records with inventor Ghani Tahir.
H10B (Memory device manufacture) accounts for 48 patent records at 3% of classified records, and H10N (Other electric solid-state devices) accounts for 15 records at 1%. Both represent areas adjacent to the dominant H01L core where coverage is relatively sparse. H10W and G11C similarly show low record counts. These are observations of sparsity; their value as entry points depends on technical fit and competitive intent.
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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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