Domain Name & Routing Security Patents: Top Filers & Trends 2026
Domain Name and Routing Security Patents: Who Holds the Defenses
33.7% concentration. The top 5 assignees account for 229 of 680 records in scope — dense but not closed. Annual filings rose from 24 in 2017 to a peak of 91 in 2021, then declined to 34 by 2024 — a -63% move over that span. 2025 and 2026 figures are still incomplete because publication typically lags filing by about 18 months, so the most recent years should not be read as a continued decline yet.
- 1ORACLE INT CORP11.6%
- 2TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)6.6%
- 3CISCO TECHNOLOGY INC6.0%
- 4VERISIGN INC5.4%
- 5SYMMERA INC4.0%
See the full domain name and routing security 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 domain name and routing security patents
Who holds the most patents in DNS and routing security?
One assignee leads the ranked set with 79 of the 680 records in scope, well ahead of the fifth-ranked holder at 27. The top 5 assignees combined account for 229 records, or 33.7% of the field, meaning concentration is real at the very top but the remaining two-thirds of filings are spread across a long tail of other companies and individual inventors. Anyone doing competitive tracking should watch both the leader’s continuation filings and the broader tail, since a decline at the top does not necessarily mean less overall activity.
Is patent filing in DNS security growing or slowing down?
Filing activity peaked in 2021 at 91 records and had fallen to 34 by 2024, a -63% change over that three-year span. However, publication typically lags actual filing by around 18 months, so 2025 and 2026 figures in this dataset are still incomplete and should not be read as evidence of a continued decline. The safest reading is that the field passed a filing peak around 2021 and is now in a post-peak phase, not that interest has disappeared.
What technology areas dominate the patent claims?
H04L, digital information transmission, appears in 88.5% of the 680 records, making it by far the most heavily claimed subclass. G06F (electric digital data processing) follows at 31.3% and H04W (wireless communication networks) at 14.0%, while AI-based computing under G06N covers only 2.4% of records. Since a single record can carry multiple IPC classes, these percentages overlap rather than sum to 100%, but the gap between H04L and everything else shows where claim density is heaviest.
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 Domain Name and Routing Security 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.