EMC Testing Patents: Leaders, Trends & White Space 2026
EMC Testing and Precompliance Measurement Patents
46.6% of all 131 records sit with just five assignees, so most of the claim space that matters for freedom-to-operate checks is already staked by a small group. Filings ran from 6 records in 2017 to a peak of 36 in 2019, then settled into a lower band. The 2021-to-2024 comparison — 6 records each year, 0% change — is the cleanest complete-year read available; treat 2025 and 2026 as still filling in rather than as decline.
- 1ROHDE & SCHWARZ GMBH & CO KG22
- 2DARE BV15
- 3GPT LIMITED9
- 4ETS LINDGREN INC8
- 5ZHUHAI ENPOWER ELECTRIC7
See the full emc testing and precompliance measurement analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about EMC testing patents
Who holds the most EMC testing and precompliance measurement patents?
One assignee leads the ranked list with 22 records, well ahead of the fifth-place holder at 7. The top five assignees combined account for 46.6% of all 131 records in scope, so a small group controls a large share of the documented claim space. Beyond tenth place, which sits at just 3 records, the field spreads thinly across more than fifty additional assignees, most holding only one or two filings.
Is patent filing in EMC testing growing or shrinking?
The clearest complete-year comparison available is 2021 to 2024, where filings held flat at 6 records each year — 0% change. Filing activity actually peaked earlier, in 2019, at 36 records, then settled to a lower plateau. The apparent drop in 2025 and 2026 is largely a publication-lag artefact, since publication typically trails filing by around 18 months, so those years should not be read as a genuine decline yet.
What technology areas dominate EMC testing patents?
Electric and magnetic measurement methods, classified under G01R, appear in 69.5% of the 131 records in scope, making it by far the largest single category. Transmission-related claims (H04B) follow at 22.9% and printed-circuit assembly claims (H05K) at 16.0%. Because a single patent can carry multiple IPC classes, these shares overlap rather than sum to 100%.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on EMC Testing and Precompliance Measurement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.