Privacy-Enhancing Technologies Patents: Top Companies & Trends 2026
Privacy-Enhancing Technology Patents: Who Is Filing, and Where the Claim Space Is Still Open
Concentrated but not locked up. the top 5 assignees hold 19.8% of all 4,406 records in scope, and the top 10 hold 29.2% — leaving a long tail of single- and few-filing entrants. Annual publications rose from 115 in 2017 to a peak of 741 in 2022, and the 2021-to-2024 span shows a 33% increase in records (430 to 570) even after the peak year. Treat the final one to two years on the chart as incomplete rather than declining.
- 1INTEL CORP6.4%
- 2INTERNATIONAL BUSINESS MACHINE CORPORATION4.1%
- 3ARM LTD3.7%
- 4MICROSOFT TECHNOLOGY LICENSING LLC3.5%
- 5HUAWEI TECH CO LTD2.2%
See the full privacy-enhancing technologies patent landscape 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 holds the most patents in privacy-enhancing technologies?
One assignee leads the ranked field with 283 records, more than double the fifth-place total of 95. The gap between first and second tier is steep, but the top 10 combined still account for only 29.2% of the 4,406 records in scope, meaning the majority of filings sit outside the leading firms. This pattern is typical of a field where core primitives are well established but application-layer claims remain widely distributed.
Is patent filing activity in this field growing or slowing down?
Filing activity grew substantially between 2021 and 2024, rising from 430 to 570 records — a 33% increase over that span — after an earlier peak of 741 in 2022. Because publication typically lags filing by around 18 months, the years closest to the 2026 data cut-off will always look artificially lower than they eventually turn out to be. Treat any apparent recent-year dip as incomplete data rather than a genuine slowdown.
What technologies dominate privacy-enhancing technology patent claims?
General-purpose digital data processing (IPC class G06F) and digital information transmission (H04L) dominate, appearing in 56.0% and 52.7% of the 4,406 records respectively, since most encryption, key-exchange and secure-channel claims fall under one or both. AI-related computing and business-process claims form a smaller second tier, each above 11%, while healthcare informatics, image recognition and wireless-specific claims each sit under 5%. Because a single record can carry multiple IPC classes, 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 Privacy-Enhancing Technologies Patent Landscape covering 2015–2026, data cut-off 2026-08-31. 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.