Thermal Interface Material Patents: Leaders & Trends 2026
A data-backed view of thermal interface material patent filings through 2026: who leads filing activity, which IPC classes carry the claim density, filing trends since 2017, and where white space remains for new entrants
Filing growth = 2021 (583 records) → 2024 (652); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 8,717 records in scope (CR5), not the ranked leaders only.
What this landscape covers
Thermal interface material (TIM) patents span two distinct claim traditions: material science claims over polymer, ceramic or metallic compositions engineered for thermal conductivity, and structural/packaging claims over how that material sits inside a semiconductor package, heat sink assembly or electronic enclosure. The dataset behind this page pulls both traditions together using a search string that matches on thermal interface material terminology directly and on claim-level combinations of interface materials with semiconductor packaging or electronic cooling language.
Coverage runs from 2015 through the 2026 data cut-off, drawing on 8,717 published records. Because publication typically lags filing by around 18 months, the most recent one to two years understate real filing activity and should be read as provisional rather than a sign of a slowdown.
Filing trend and technology composition
Two views of the same 8,717-record dataset: how filing volume has moved year over year, and how those records classify across IPC subclasses.
Filing trend, 2017–2026
Filings rose from 331 in 2017 to a peak of 675 in 2023, with the 2021-to-2024 span showing 12% growth (583 to 652 records). 2025 and 2026 figures are still filling in as publications catch up with filing dates, so the recent-year dip is a lag artefact, not a real contraction.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
IPC subclass distribution
H01L (semiconductor devices) appears on 50.6% of the 8,717 records, followed by H10W at 41.6% and H05K (printed circuits and assemblies) at 25.0%. Materials-side classes — C09K, C08K and C08L — each sit between 10% and 15%, showing that composition claims run alongside, rather than instead of, packaging-structure claims. Records can carry more than one class, so these shares sum to well above 100%.
Shares are the percentage of the 8,717 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electronics Thermal Management: Thermal Interface Material Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about electronics thermal management: thermal interface material patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited records
Thermal interface material structures including protruding surface features to reduce thermal interface material migration
A process of forming a thermal interface material structure includes forming an assembly that includes a thermal interface material disposed between a first mating surface and a second mating surface. The first mating surface is associated with a module lid, and the second mating surface is associated with a heat sink. Protruding surface features are incorporated onto the first mating surface or the second mating surface. The process also includes compressing the assembly to form a thermal interface material structure.Filed by International Business Machines Corporation, published 2018-10-25 as US20180308782A1.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20120119346A1 | Semiconductor package and method of forming the same | 409 |
| 2 | US20150021754A1 | Semiconductor Device and Method of Forming Thermal Lid for Balancing Warpage and Thermal Management | 294 |
| 3 | US20170095667A1 | Method and apparatus for neuromodulation treatments of pain and other conditions | 290 |
| 4 | US6054198A | Conformal thermal interface material for electronic components | 284 |
| 5 | US20140264818A1 | Polymer thermal interface material having enhanced thermal conductivity | 276 |
| 6 | US20150130045A1 | Thermally conductive structure for heat dissipation in semiconductor packages | 265 |
| 7 | US20140264813A1 | Semiconductor Device Package and Method | 258 |
| 8 | US20190115277A1 | Package Structure for Heat Dissipation | 252 |
| 9 | US20120018871A1 | Stack package and semiconductor package including the same | 214 |
| 10 | US6483707B1 | Heat sink and thermal interface having shielding to attenuate electromagnetic interference | 208 |
Citation counts reflect influence within this searched corpus and skew toward older filings — they are not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Four read-outs from the assignee ranking, the technology split and the co-filing data.
The top of the field is dense, the rest is not
Five assignees account for 28.1% of all 8,717 records in scope, and the top ten reach 37.1%. Below that the ranking of 100 companies thins quickly into single- and low-digit filers, meaning most of the field is not defended by any one player.
Filing volume is still climbing, not plateauing
Records rose from 583 in 2021 to 652 in 2024, a 12% increase over that span, with 2023 marking the highest single year so far at 675. Because publication lags filing by roughly 18 months, the softer 2025–2026 counts reflect incomplete data rather than a real drop in activity.
Packaging structure dominates the claim space
H01L (semiconductor devices) touches half of all records, well ahead of the materials-composition classes C09K, C08K and C08L, each in the 10–15% range. That gap suggests structural integration claims are the more crowded territory relative to composition claims.
Joint filing is limited and university-linked
Only ten co-assignee pairs appear in the dataset, and the strongest links pair a Taiwanese electronics manufacturer with a university partner, alongside a materials company filing jointly with its own global technology affiliate. Co-filing here looks more like manufacturer-university or parent-subsidiary collaboration than cross-industry alliance.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electronics thermal management: thermal interface material patent landscape, with the prior art for and against each one.
Where to take this analysis
The dataset points to specific next steps depending on whether you are scoping freedom-to-operate, tracking a competitor, or looking for open claim space.
Map the white space in composition classes
C08K, C08L and B32B carry far lower record shares than H01L, suggesting composition and layered-product claims are less crowded relative to packaging-structure claims. Eureka can pull the specific claim language in those subclasses to confirm where an unclaimed angle actually sits.
Explore white space in EurekaTrack the leading assignees' recent filings
The top of the ranking is concentrated, but a five-year filing history for any one leader shows whether their activity is accelerating, steady, or shifting toward a different claim type.
Set up assignee tracking in EurekaCheck freedom-to-operate against the most-cited records
The most-cited records in this corpus include foundational structural and composition patents still active in citation networks. A claim chart against those records is the fastest way to see whether a planned design reads on them.
Run a claim chart in EurekaCommon questions on thermal interface material patents
The assignee ranking behind this dataset lists 100 companies, and the top five combined hold 28.1% of all 8,717 records in scope, with the leader alone at 668 records. That concentration exists alongside a long tail of companies with only a handful of filings each, so leadership at the top does not mean the field is closed. Checking the current leader's recent filing years, rather than their cumulative total, is the better way to judge whether they are still actively expanding coverage.
Filing records grew 12% from 583 in 2021 to 652 in 2024, and 2023 was the highest single year on record at 675. Counts for 2025 and 2026 look lower only because publication lags filing by roughly 18 months, so those years are still filling in rather than showing a real decline. Judged on the last fully-settled year, 2024, the field was still expanding.
The largest classes are H01L (semiconductor devices, 50.6% of the 8,717 records) and H10W (41.6%), both structural or packaging-side classifications, followed by H05K (printed circuits and assemblies, 25.0%). Materials-composition classes — C09K, C08K and C08L — each cover roughly 10–15% of records, meaning composition claims are a meaningful but smaller share of the field than packaging-integration claims. Because a single record can carry several IPC classes, these percentages overlap rather than summing to 100%.
The lower-share IPC classes in this dataset — B32B (layered products, 4.2%) and G06F (electric digital data processing, 4.0%) — carry far fewer records than H01L or H10W, which points to less claim density in layered-product structures and in software-adjacent thermal management approaches. That lower density is a starting signal, not proof of an open path; it still needs checking against the specific claim language in those subclasses before relying on it. Composition classes like C08K and C08L, while more populated than B32B, are also less crowded than the packaging-structure classes and worth a closer look.
Citation counts in this corpus favor older filings simply because they have had more time to accumulate citations, so the most-cited records skew toward patents from the early-to-mid part of the coverage window. They are a reasonable signal of historical influence on later filings, but a poor proxy for which technology is commercially dominant today. A newer, less-cited filing can still be more relevant to current freedom-to-operate work than an older, heavily-cited one.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.