SEM Materials Patents: Who Leads, Where the Gaps Are 2026
- Filing is broad but not concentrated: the ranked leader holds 538 records and the top 5 combined account for just 7.8% of all 23,073 records in scope.
- Volume peaked in 2020 at 1,300 filings, and the 2021→2024 complete-year window shows a -10% change, not a collapse — 2025 onward is still filling in behind publication lag.
- Instrumentation-side claims are a minority slice: H01J (electron & discharge tubes) sits at only 5.8% of records, well behind material-science and analysis classes like G01N at 11.7%.
Filing growth compares 2021 (1,087 records) with 2024 (975) — 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 23,073 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks patent families that combine core SEM and electron-diffraction imaging terms — scanning electron microscopy, electron backscatter diffraction, secondary electron imaging — with the operating parameters that determine image quality and material fidelity: landing energy, charging artifact, sample coating, working distance, detector selection and quantitative analysis. That combination pulls in both instrument-side claims (column and detector design) and application-side claims that use SEM as a characterisation step inside a materials or biological process.
The scope spans 2015 through the July 2026 cut-off, with 23,073 published records tied to 23,073 families in the assignee ranking. Because publication trails filing by roughly 18 months, the final one to two years of the trend line will keep rising as more applications publish — treat the most recent years as a floor, not a ceiling.
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Filing trend and technology composition
Two views of the same 23,073-record corpus: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filing trend, 2017–2026
Filings rose from 1,097 in 2017 to a peak of 1,300 in 2020, then eased to 975 by 2024 — a -10% change across the 2021-2024 window that is complete enough to compare. 2025 and 2026 figures (116 in 2026) are undercounts still catching up to filing dates, not evidence of a falling field.
IPC subclass composition
A61K (medicinal preparations) leads at 26.2% of records, with G01N (material analysis & testing) and A61P (therapeutic activity) following at 11.7% and 11.3%. Instrument-specific classes are thinner: H01J (electron & discharge tubes) sits at 5.8% and B01J (catalysis/chemical processes) at 5.0% — a reminder that most records use SEM as a supporting technique inside a broader materials or life-science claim, not as the primary invention.
Shares are the percentage of the 23,073 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Scanning Electron Microscopy for Materials with Eureka
This page is one run against one query. Ask Eureka your own question about scanning electron microscopy for materials and every answer comes back with the patent numbers behind it.
Try EurekaA representative claim: multi-landing-energy inspection
US20220254599A1 — Multiple landing energy scanning electron microscopy systems and methods
Inspection systems and methods are disclosed. An inspection system may include a first energy source configured to provide a first landing energy beam and a second energy source configured to provide a second landing energy beam. The inspection system may also include a beam controller configured to selectively deliver one of the first and second landing energy beams towards a same field of view, and to switch between delivery of the first and second landing energy beams according to a mode of operation of the inspection system.Published 2022-08-11.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US7431968B1 | Process and apparatus for organic vapor jet deposition | 2,569 |
| 2 | US8273404B2 | Extraction of solvents from drug containing polymer reservoirs | 1,351 |
| 3 | US6027889A | Detection of nucleic acid sequence differences using coupled ligase detection and polymerase chain reactions | 1,207 |
| 4 | US20030089899A1 | Nanoscale wires and related devices | 1,061 |
| 5 | US20050136049A1 | Binding constructs and methods for use thereof | 803 |
| 6 | US10085643B2 | Analytic methods of tissue evaluation | 799 |
| 7 | US6197575B1 | Vascularized perfused microtissue/micro-organ arrays | 776 |
| 8 | US6589548B1 | Controlled drug delivery system using the conjugation of drug to biodegradable polyester | 750 |
| 9 | US6214560B1 | Analyte assay using particulate labels | 709 |
| 10 | US6309822B1 | Method for comparing copy number of nucleic acid sequences | 701 |
Citation counts favour older filings simply by virtue of longer exposure; read them as a signal of influence within this 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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Browse MCP servers →What the numbers mean for a filing decision
Three patterns worth acting on before drafting claims or scoping freedom-to-operate in this space.
No single assignee controls the field
The leader holds 538 records out of 23,073, and even the combined top 5 only reach 7.8% of all records in scope. Tenth place sits at 151. This is a fragmented landscape rather than one dominated by a handful of blocking portfolios.
Volume has eased, not collapsed
Filings peaked in 2020 and the 2021-2024 complete-year comparison shows a -10% change. Given the roughly 18-month publication lag, current-year figures like 116 in 2026 will keep climbing as later filings publish — they are not proof of a shrinking field yet.
Instrument claims are a minority of the corpus
Most records classify under materials, pharmaceutical or analytical subclasses rather than electron-tube hardware. G01N (material analysis & testing) at 11.7% outweighs H01J more than two to one, showing SEM is largely claimed as a process step, not the invention itself.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to scanning electron microscopy for materials, with the prior art for and against each one.
Assignee landscape and collaboration patterns
The ranking covers 100 companies counted by record; it is the full ranking the data endpoint returns, not a curated top-50 or top-100 cut. Ten co-assignee pairs appear in the data, with the strongest recurring collaborations centred on university systems working together on shared families.
A fragmented top of table
The leading assignee holds 538 records, well ahead of fifth place at 259 and tenth at 151 — a steep drop-off rather than a plateau, consistent with a field where no single player has locked up the core claim space.
Recent-year filings are down across tracked leaders
Every assignee with recent-year momentum data shows a sharp year-over-year drop in the latest year — consistent with publication lag rather than a genuine pullback, since the most recent year is still incomplete for the whole dataset.
Collaboration is concentrated among a few institutions
The strongest co-filing pairs involve university systems filing jointly, with the top pair appearing in 22 shared families — a modest but consistent signal of cross-institution research programmes rather than industry consortia.
| Assignee | Recent year | YoY |
|---|---|---|
| Board of Regents, The University of Texas System | 2 | -75% |
| Celgene Corp | 1 | -67% |
| Massachusetts Institute of Technology | 1 | -83% |
| ASML Netherlands B.V. | 1 | -91% |
| The Regents of the University of California | 0 | -100% |
| Signal Pharmaceuticals LLC | 0 | — |
| Mitchell Technologies Inc | 0 | — |
| FEI Company | 0 | -100% |
Where to take this analysis
The landscape points to fragmented ownership and a filing plateau — the practical next step is narrowing to the sub-claims and assignees that matter for a specific product or freedom-to-operate question.
Map claim scope against a specific instrument design
Run the representative multi-landing-energy claim and its family against your own detector or beam-control architecture to see where overlap actually exists rather than assuming from the class-level data.
Explore claims in EurekaTrack the under-claimed sub-areas as they fill in
Charging artifact compensation and adaptive landing-energy switching are thin today; set alerts on these terms so a first-mover filing does not go unnoticed.
Set up monitoring in EurekaFrequently asked questions
No single company dominates this field. The leading assignee in this dataset holds 538 records out of 23,073 total, and the combined top 5 assignees only reach 7.8% of all records in scope. This is a fragmented landscape spread across university systems, instrument makers and pharmaceutical or materials companies using SEM as a characterisation step, so freedom-to-operate work usually needs to look well beyond the top few names.
Filings peaked in 2020 at 1,300 and the most recent complete-year comparison, 2021 to 2024, shows a -10% change, which is a modest easing rather than a collapse. Because patent publication typically lags filing by around 18 months, the low counts seen in 2025 and 2026 (116 filings so far in 2026) reflect incomplete data, not an actual drop in filing activity. A fairer read of current momentum will only be possible once those years finish publishing.
Landing energy is the actual kinetic energy of the electron beam as it strikes the sample surface, which controls imaging depth, resolution and charging behaviour on non-conductive or beam-sensitive materials. Patents in this space, including the representative filing covered here, claim systems that switch between multiple landing energies to balance imaging quality against sample damage. It is a frequent claim element because it directly affects both image fidelity and throughput in production inspection tools.
Within this 23,073-record corpus, A61K (medicinal preparations) carries the largest share at 26.2% of records, followed by G01N (material analysis and testing) at 11.7% and A61P (therapeutic activity) at 11.3%. Instrument-specific classes like H01J (electron and discharge tubes) are comparatively thin at 5.8%. This composition shows that most filings use SEM as a supporting analytical step inside a broader pharmaceutical or materials invention rather than claiming the microscope itself.
The data points to comparatively thin direct coverage around in-situ charging artifact compensation, adaptive landing-energy switching for mixed-material samples, automated detector selection at low accelerating voltages, and coating-free sample preparation. These sit adjacent to dense classes like G01N and H01J but are not saturated the way core imaging and detector claims are. Any filing here should still be checked against the specific assignees active in adjacent classes before assuming the space is genuinely open.
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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.