Microarchitectural Side Channel Defense Patents: Who Leads 2026
Microarchitectural Side Channel Defense Patents: Mapping the Field
One filer holds 11 of 32 records, yet the ranked leaders still show a long tail of single-country entrants below the top ten. Filings rose to a peak of 11 records in 2019, the high point of the entire coverage window. The 2021-to-2024 comparison shows a drop from 2 to 1 record, a -50% change; treat 2025 and 2026 figures as provisional, since publication typically lags filing by around 18 months.
- 1VIRSEC SYSTEMS INC11
- 2NANHU LAB3
- 3ARTERIS INC2
- 4INDIAN INST OF TECH MADRAS2
- 5HEWLETT PACKARD DEVELOPMENT COMPANY LP2
See the full microarchitectural side channel defense 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 on this landscape
Who holds the most patents in microarchitectural side channel defense?
One assignee leads the ranked field with 11 of the 32 records in scope, well ahead of the rest of the 16 ranked companies and institutions. The next four assignees combined only bring the top five to 20 records, 62.5% of the total. Beyond the top ten, which together hold 90.6% of records, filing activity thins into single-record entrants, so freedom-to-operate work should focus first on the leader before checking the long tail.
When did patent filing in this field peak?
Filing activity reached its highest point in 2019 with 11 records published that year, the peak across the full 2015-to-2026 coverage window. Activity has not returned to that level since. Because patent publication typically lags actual filing by roughly 18 months, the most recent years in any such trend are always undercounted, so a lower count in 2025 or 2026 does not necessarily mean filing has slowed.
Is the field growing or shrinking?
The clearest comparable figure available is the 2021-to-2024 span, where filings fell from 2 to 1 record, a -50% change. That is a small base, so a single filing swings the percentage significantly. Given the peak was in 2019 and later years show lower counts, the pattern looks more like early concentration followed by a thinner, steadier trickle than a field accelerating toward the present.
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 Microarchitectural Side Channel Defense 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.