Static Control & ESD Protection Patents: Leaders & Trends 2026
- 24.0% concentration at the top. The five leading assignees hold 1,585 of 6,609 records in scope — a meaningful cluster, but with 76% of filings spread across a long tail.
- Filing activity has cooled from its 2021 peak. 221 records in 2021 fell to 78 in 2024, a 65% decline over that three-year span, well before the most recent lag-affected years are excluded.
- Semiconductor devices dominate the claim space. H01L accounts for 34.4% of all 6,609 records, more than double the next largest class, protective circuit arrangements at 12.5%.
Filing growth compares 2021 (221 records) with 2024 (78) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 6,609 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Static control and ESD protection filings span two very different engineering problems that happen to share vocabulary: keeping charge off wafers and tools inside a fab, and keeping charge off sensitive read/write or sensor components once they leave it. The search string used here pulls both, which is why semiconductor device claims (H01L) sit alongside a large block of diagnosis and surgery filings (A61B) tied to transcutaneous sensor hardware that also needs ESD-safe handling during manufacture.
The dataset covers 6,609 published records filed or published between 2015 and mid-2026, with assignee, IPC and filing-year data drawn from the same corpus used throughout this page.
Filing trends and technology composition
Two views of the same 6,609 records: how filing volume has moved year over year, and how those records distribute across IPC subclasses. Because a single record can carry several IPC codes, the class shares below add up to more than the record total — that is expected, not an error.
Filing trend: rise, peak, and pullback
Annual filings rose from 184 in 2017 to a peak of 221 in 2021, then fell to 78 by 2024 — a 65% decline over that span. Treat 2025 and 2026 as understated: publication typically lags filing by around 18 months, so the most recent bars will fill in as later data arrives.
Where the claims sit
H01L (semiconductor devices) leads at 34.4% of records, with A61B (diagnosis and surgery) and H02H (protective circuit arrangements) forming the next tier at 14.8% and 12.5%. Measurement (G01R) and general semiconductor devices (H10D) round out the mid tier, each in the 7-9% range.
Shares are the percentage of the 6,609 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Static Control and ESD Protection in Fabs with Eureka
This page is one run against one query. Ask Eureka your own question about static control and esd protection in fabs and every answer comes back with the patent numbers behind it.
Try EurekaA representative filing and the most-cited records
Method of making a read sensor while protecting it from electrostatic discharge (ESD) damage
A method of making a read sensor while protecting it from electrostatic discharge (ESD) damage involves forming a severable shunt during the formation of the read sensor. The method may include forming a resist layer over a plurality of read sensor layers; performing lithography with use of a mask to form the resist layer into a patterned resist which exposes left and right side regions over the read sensor layers as well as a shunt region; etching, with the patterned resist in place, to remove materials in the left and right side regions and in the shunt region; and depositing, with the patterned resist in place, left and right hard bias and lead layers in the left and right side regions.Filed by Hitachi Global Storage Technologies Netherlands B.V., granted 2007-11-06 — an early example of building ESD protection directly into the sensor fabrication sequence rather than adding it as a downstream process step.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070016381A1 | Systems and methods for processing analyte sensor data | 1,796 |
| 2 | US20060020187A1 | Transcutaneous analyte sensor | 1,788 |
| 3 | US20060016700A1 | Transcutaneous analyte sensor | 1,715 |
| 4 | US7310544B2 | Methods and systems for inserting a transcutaneous analyte sensor | 1,640 |
| 5 | US20060020192A1 | Transcutaneous analyte sensor | 1,618 |
| 6 | US20060020186A1 | Transcutaneous analyte sensor | 1,618 |
| 7 | US20060222566A1 | Transcutaneous analyte sensor | 1,617 |
| 8 | US20060020191A1 | Transcutaneous analyte sensor | 1,595 |
| 9 | US20070203966A1 | Transcutaneous analyte sensor | 1,563 |
| 10 | US20060020188A1 | Transcutaneous analyte sensor | 1,551 |
Citation counts favour older filings simply because they have had longer to accumulate them — read this as a signal of influence within the searched corpus, not as a ranking of current technical importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the raw counts are set against each other: where claim density is highest, how fast the field has cooled, and how concentrated ownership actually is.
A moderate cluster, not a lock-out
The five leading assignees hold roughly a quarter of all records in scope, which leaves the majority of filing activity spread across a long tail of single- or few-filing entrants. That is not a field where one or two players control the claim space outright.
Activity has pulled back from its 2021 peak
Filings fell 65% between the 2021 peak of 221 and the last complete year, 2024, at 78. That decline predates any publication-lag effect, so it reflects an actual reduction in new filings rather than a reporting artefact.
Claims cluster hardest on-chip
Semiconductor device claims (H01L) cover more than a third of all records, well ahead of protective circuit arrangements and measurement classes. That density signals occupied claim space around device-level ESD protection, not that the underlying problem is solved.
Collaboration filings are rare and concentrated
Only ten co-assignee pairings appear across the corpus, and the strongest of them link a single corporate parent to its own subsidiary or to named inventors, rather than independent companies filing jointly.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to static control and esd protection in fabs, with the prior art for and against each one.
Who is filing, and where the activity has gone quiet
The ranked leaders span semiconductor manufacturing, analog and mixed-signal IC makers, and medical sensor companies — a mix that reflects the dual nature of the search scope. Recent-year momentum across the leaders is uniformly weak, with several showing no filings at all in the latest tracked year.
A single leader well ahead of the field
The top-ranked assignee holds 646 records, more than three and a half times the fifth-place total of 175 — a wide gap that thins out quickly further down the ranking.
Recent-year filing has gone quiet across leaders
Several of the most active historical filers show zero filings in the latest tracked year, a pattern consistent across companies working in semiconductors, medical sensors and analog ICs alike. This likely reflects publication lag as much as any real pullback.
Most of the field sits outside the ranked leaders
With the top 10 combined holding 30.6% of all records, the remaining 69.4% is distributed across the rest of the ranking and unranked filers — evidence of a fragmented ownership structure rather than a settled oligopoly.
| Assignee | Recent year | YoY |
|---|---|---|
| Qualcomm Inc | 1 | -50% |
| Dexcom Inc | 0 | -100% |
| Taiwan Semiconductor Manufacturing Co., Ltd. (TSMC) | 0 | -100% |
| Medtronic MiniMed Inc | 0 | -100% |
| International Business Machines Corporation | 0 | — |
| Texas Instruments Inc | 0 | -100% |
| FyreStorm Inc | 0 | — |
| Hitachi Global Storage Technologies Netherlands B.V. | 0 | — |
Turning this landscape into a filing decision
The counts above answer where activity has concentrated. Deciding whether to file, license or design around still requires reading individual claim scope against your own technical approach.
Check freedom-to-operate against the leader's portfolio
With one assignee holding 646 records against a fifth-place figure of 175, any new filing in the core semiconductor classes should be checked against that leader's claim scope first.
Run a freedom-to-operate search in EurekaTrack the under-claimed branches before they fill in
Charge decay time measurement and ionizer maintenance methods show thinner filing density than the core device classes — a narrower window to establish position before it closes.
Explore white space with EurekaWatch for the 2025-2026 publication catch-up
Filings recorded in 2025 and 2026 are still incomplete due to publication lag; re-check the trend once later data arrives before concluding the field has slowed further.
Set up monitoring in EurekaCommon questions about this landscape
One assignee leads the ranked field with 646 records, well ahead of the fifth-place holder at 175 and tenth place at 67. The top five assignees combined hold 1,585 records, which is 24.0% of the 6,609 records in scope, while the top ten reach 30.6%. That leaves a majority of filings spread across a long tail of smaller filers, so no single company controls the field outright.
Filings rose from 184 in 2017 to a peak of 221 in 2021, then declined to 78 by 2024 — a 65% drop over that three-year span. The 2025 and 2026 figures shown in the trend are understated because publication typically lags filing by about 18 months, so they should not yet be read as a continuation of the decline. The honest read is that the field cooled meaningfully after 2021, with the most recent trajectory still uncertain.
Semiconductor devices (IPC class H01L) account for 34.4% of the 6,609 records in scope, making it by far the densest claim area. Diagnosis and surgery filings (A61B) at 14.8% and protective circuit arrangements (H02H) at 12.5% form the next tier, reflecting the dual scope of the search across fab-level static control and sensor-device ESD protection. Because records can carry multiple IPC codes, these shares add up to more than 100%, which is expected rather than an error.
US7291279B2 claims a method of fabricating a read sensor that incorporates a severable shunt during manufacture specifically to protect the sensor from electrostatic discharge damage. The method covers a defined sequence: forming a resist layer, patterning it lithographically to expose side and shunt regions, etching those regions, and depositing hard bias and lead layers while the patterned resist remains in place. It blocks that particular fabrication sequence for ESD-safe read sensor manufacture, not ESD protection methods generally, so alternative shunt designs or protection added at a different process stage may sit outside its claims.
Sub-areas tied to measurement and maintenance rather than device fabrication show thinner filing density relative to the core semiconductor classes — charge decay time measurement, ionizer maintenance scheduling, equipment grounding verification, and electrostatic field meter calibration all sit in this category. These are process and instrumentation problems adjacent to the heavily claimed device-level protection space, and the comparatively lower filing volume suggests room for a well-drafted first claim before the space fills in further.
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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.