System Level Test Patents: Who Leads, Where the Gaps Are 2026
System Level Test and Final Test Handling Patents: Who Holds the Claims
73.6% concentration. The top 5 of 30 ranked assignees hold 120 of the 163 records in scope — a field with a narrow set of dominant filers rather than a broad field of competitors. Filings peaked at 8 in 2017 and have trailed off since, with 2026 showing 0 on a partial year. Treat the last one to two years as undercounted rather than as evidence the field has gone quiet.
- 1TERADYNE INC63
- 2CELERINT LLC21
- 3RASCO18
- 4INTEST CORP10
- 5TEXAS INSTRUMENTS INC8
See the full system level test and final test handling 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 this landscape
Who are the leading patent holders in system level test and final test handler technology?
The dataset ranks 30 assignees by patent family count, and filing is heavily concentrated: the top five together hold 120 of the 163 records in scope, or 73.6%. The single leading assignee alone holds 63 records, well ahead of the fifth-ranked holder at 8. Below the top ten, family counts drop into single digits, so most of the remaining ranked assignees hold only a handful of filings each rather than competing head-to-head with the leader.
Is patent filing in this field growing or slowing down?
The visible trend peaked in 2017 at 8 filings and has trailed off since, with the most recent year showing 0 on a partial-year count. This should not be read as the field going quiet: publication lags actual filing by roughly 18 months, so the last one to two years in any patent trend are systematically understated. A reliable growth rate is not computable from this dataset because too few complete years remain once that lag is accounted for.
What technology areas does this patent set actually cover?
Records in scope combine system-level test, final test handler, or test socket claims with mechanisms like active thermal control, device interface boards, handler indexing, or correlation to ATE. By IPC classification, electric and magnetic measurement (G01R) touches 76.1% of the 163 records, making it the anchor category, with digital data processing (G06F, 19.0%) and printed circuits and assemblies (H05K, 8.6%) well behind. Because a single record can carry multiple IPC codes, these shares add up to more than 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 System Level Test and Final Test Handling 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.