Certificate Management & PKI Patents: Who Leads, Where the Gaps Are 2026
Certificate management and public key infrastructure patents: who holds the ground and where it is still open
18.0% concentration at the top. The top 5 of 100 ranked assignees hold 1,632 of 9,090 records in scope — a real lead, but not a lock on the field. Published records rose to a peak of 506 in 2018, then eased; the comparable complete-year window shows 449 in 2021 falling to 361 in 2024, a -20% move. Figures for 2025 and 2026 are still incomplete because of publication lag and should not be read as a continuing drop.
- 1BLACKBERRY LTD5.2%
- 2MALIKIE INNOVATIONS LTD3.5%
- 3INTEL CORP3.4%
- 4CISCO TECHNOLOGY INC3.1%
- 5TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)2.8%
See the full certificate management and public key infrastructure 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
How concentrated is the certificate management and PKI patent field?
It is moderately concentrated but not dominated by a single player. The top 5 of the 100 ranked assignees hold 1,632 of the 9,090 records in scope, which is 18.0%, and the top 10 hold 26.9%. That leaves the majority of records spread across a long tail of assignees with smaller filing counts, so a company entering this space is not up against one or two owners of the whole field.
Why do the 2025 and 2026 filing numbers look so low?
Patent publication typically lags the actual filing date by roughly 18 months, so records filed in late 2024 through 2026 are still working their way through publication and have not all appeared in the dataset yet. The most recent year that can be treated as reasonably complete in this dataset is 2024, where published records stood at 361. Any apparent drop in 2025-2026 should be read as an artefact of that lag, not as evidence filing activity has actually stopped.
Which technology areas carry the most patent claims in PKI and certificate management?
H04L, the digital information transmission class, appears in 79.6% of the 9,090 records in scope, making it by far the heaviest class. G06F (electric digital data processing) follows at 36.1% and H04W (wireless communication networks) at 19.9%. Because a single record can carry multiple IPC classes, these percentages add up to more than 100%, and they describe claim density rather than technology quality or maturity.
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 Certificate Management and Public Key Infrastructure 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.