MEMS Oscillator Patents: Who Leads, Where the Gaps Are 2026
- Filing has cooled since its 2024 peak. Applications rose from 14 in 2017 to a high of 40 in 2024, but the 2026 count of 3 (partial year) points to a slowing pace rather than continued acceleration.
- Impedance and filter claims dominate the IPC mix. H03H accounts for 336 of 430 records, nearly 80% of the corpus, meaning most contested claim space sits in filter and resonant-network architecture rather than in oscillation generation or MEMS fabrication itself.
- Recent-year momentum has gone flat across nearly every named assignee. Several previously active filers show 0 activity in the latest year, and one shows a -100% year-on-year drop, suggesting consolidation or a pause in claim-building rather than steady incremental filing.
Filing growth compares 2021 (13 records) with 2024 (40) — 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 430 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent families addressing MEMS oscillators, MEMS resonators and timing devices, filtered to documents whose title or claims address frequency stability, phase noise, temperature compensation, aging or quartz replacement — the practical problems that determine whether a MEMS timing part can substitute for a quartz crystal in a real design. The IPC scope spans impedance networks and filters (H03H), oscillation generation (H03B) and MEMS microstructures (B81B), which together frame this as a filter/resonator-architecture field first and a pure microfabrication field second.
The dataset spans 430 patent families published between 2015 and mid-2026. Because publication typically lags filing by around 18 months, the last one to two years of the trend will read lower than actual filing activity once later applications publish.
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Filing trend and technology composition
Two views of the same 430-family corpus: how filing volume has moved year over year, and how those filings split across the eight IPC subclasses that define the technical scope.
A peak in 2024, then a pullback
Filing rose from 14 families in 2017 to a peak of 40 in 2024, crossing the midpoint of 23 in 2022. The drop to 3 in 2026 should be read against the publication lag — but even allowing for that, the shape from 2022 onward is flat-to-declining rather than a continued climb, unlike fields still in an early filing surge.
Filter and oscillator claims carry the weight
H03H (impedance networks & filters) covers 336 of 430 records and H03B (oscillation generation) covers 144, while the MEMS-specific classes B81B (69) and B81C (19) are comparatively thin. H10N, H01L and H03L each sit in the 37-63 range, marking secondary but active claim territory in solid-state device integration and frequency/phase control.
Shares are the percentage of the 430 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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Try EurekaThe most-cited prior art in this corpus
MEMS resonator active temperature compensation method and thermally-actuated MEMS resonator
A MEMS resonator active temperature compensation method is provided. The MEMS resonator active temperature compensation method includes: a MEMS resonator is provided, wherein a structural resistance of the MEMS resonator is varied with an environmental temperature; a structural resistance shift value is formed by a variation of the environmental temperature; an electrical circuit is provided, wherein the electrical circuit is electrically connected with the MEMS resonator for providing an adjustment mechanism to the MEMS resonator; and a compensation value is provided from the adjustment mechanism for controlling the structural resistance shift value.Filed by National Tsing Hua University, published as US9630830B2 in 2017 — illustrative of the active, circuit-driven approach to temperature compensation rather than passive material compensation.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6808954B2 | Vacuum-cavity MEMS resonator | 148 |
| 2 | US7211926B2 | Temperature compensated oscillator including MEMS resonator for frequency control | 139 |
| 3 | US6987432B2 | Temperature compensation for silicon MEMS resonator | 124 |
| 4 | US20050242904A1 | Method for adjusting the frequency of a MEMS resonator | 112 |
| 5 | US20050036269A1 | Vacuum-cavity MEMS resonator | 101 |
| 6 | US20050195050A1 | Temperature controlled MEMS resonator and method for controlling resonator frequency | 96 |
| 7 | US7202761B2 | Temperature compensation for silicon MEMS resonator | 84 |
| 8 | WO2007072409A2 | A MEMS resonator, a method of manufacturing thereof, and a MEMS oscillator | 79 |
| 9 | US7002436B2 | Vacuum-cavity MEMS resonator | 76 |
| 10 | US20080272852A1 | Low-Voltage Mems Oscillator | 73 |
Citation counts are drawn from the searched corpus only and skew toward older filings; treat them as a measure of influence on later drafting, not of current commercial relevance.
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The most-cited records and the IPC split together point to where foundational claims sit and where later entrants have had to design around them.
Vacuum-cavity resonator claims anchor the field
The two highest-cited records, US6808954B2 and US20050036269A1, both cover vacuum-cavity MEMS resonator structures, and a third top-cited record covers temperature compensation for silicon MEMS resonators. New filings addressing cavity packaging or basic silicon-resonator temperature compensation are filing into dense, well-established prior art.
Filter and network claims are the crowded lane
Nearly four in five records touch impedance networks and filters (H03H), meaning most of the technical argument in this field happens at the filter-topology and resonant-network level rather than at the level of MEMS structure fabrication.
Momentum has passed its high point
The corpus peaked in 2024 and has since declined toward 3 filings in the partial 2026 year. Combined with several assignees showing flat or negative year-on-year activity, the signal is a maturing claim landscape rather than one still being actively staked out.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to micro-electromechanical oscillators and timing, with the prior art for and against each one.
Who is filing, and who has gone quiet
Assignee activity in the most recent year is thin across the board: most named filers show zero or negative year-on-year movement, with only isolated single-family filings keeping the field active.
Texas Instruments holds a narrow, current filing
Texas Instruments recorded one family in the latest year, placing it among the very few assignees with any measurable recent-year activity in this corpus.
Bosch's inventor pairings show sustained internal collaboration
Robert Bosch GmbH appears in the corpus's two strongest co-assignee pairs, each with named inventors, at 5 shared families apiece — the densest inventor-assignee collaboration pattern in the dataset.
Sitime shows a sharp pullback
Sitime's filings dropped to zero in the latest year, a -100% year-on-year change, consistent with the broader flattening seen across most named assignees including NXP, Bosch and Kyocera.
| Assignee | Recent year | YoY |
|---|---|---|
| Statera IP Holdings | 1 | 0% |
| Texas Instruments | 1 | — |
| SiTime Corporation | 0 | -100% |
| NXP Semiconductors | 0 | — |
| Robert Bosch GmbH | 0 | — |
| Kyocera Corporation | 0 | — |
| Murata Manufacturing Co., Ltd. | 0 | — |
| MEMSensing Microsystems (Suzhou, China) Co., Ltd. | 0 | — |
Where to take this analysis
The trend and citation data point to a field with occupied core claims and a few narrower openings. The next steps depend on whether the goal is freedom-to-operate or identifying a filing gap.
Map claim scope against the top-cited patents
Before drafting in vacuum-cavity packaging or silicon temperature-compensation approaches, check claim language in the highest-cited records directly, since these anchor most of the surrounding prior art.
Explore prior art in EurekaTrack the assignees still filing
With most named players flat or declining, a small set of single-family recent filers may signal where competitive attention is shifting; monitoring their follow-on filings is more informative than historical volume alone.
Set up assignee tracking in EurekaCommon questions about MEMS oscillator patents
The most-cited records in this corpus, including US6808954B2 and US20050036269A1, both describe vacuum-cavity MEMS resonator structures and carry citation counts well above the rest of the field. A third heavily-cited record, US6987432B2, covers temperature compensation for silicon MEMS resonators. Anyone drafting claims in resonator packaging or basic silicon-based temperature compensation should review these first, since they anchor a large share of the surrounding prior art in this dataset.
Not currently, based on this corpus. Filing rose from 14 families in 2017 to a peak of 40 in 2024, then dropped sharply to 3 in the partial 2026 year. Publication lag of roughly 18 months means the last one to two years understate true filing activity, but the pattern from 2022 onward already reads flat to declining rather than accelerating, and several major assignees show zero or negative year-on-year filing in the most recent period.
In this corpus, resonator claims typically cover the mechanical structure — the vibrating element, its cavity, its temperature-dependent resistance — while oscillator claims (concentrated in IPC class H03B) cover the surrounding circuit that turns that mechanical resonance into a stable frequency output. Temperature-compensation patents often bridge both, describing a resonator paired with an electrical circuit that adjusts for structural resistance shift, as in US9630830B2. Distinguishing which side of that boundary a new claim sits on matters for classification and for identifying the right prior art to search.
Recent-year activity in this dataset is thin across almost every named assignee. Texas Instruments recorded one family in the latest year, and Sitime shows a -100% year-on-year drop to zero. Robert Bosch GmbH does not show recent-year filing in this snapshot but has the strongest historical co-assignee inventor pairings in the corpus, at five shared families. The overall picture is fragmented and comparatively quiet rather than led by one clearly ascendant filer.
The IPC composition shows heavy concentration in H03H (impedance networks and filters, 336 of 430 records) and H03B (oscillation generation, 144 records), with comparatively thin coverage in B81C (MEMS manufacturing, 19 records), H01P (waveguide and microwave integration, 19 records) and H03L (automatic frequency and phase control, 37 records). These thinner branches, along with active thermal-actuation compensation circuits distinct from passive material compensation, represent areas with less occupied claim space in this dataset.
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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.