RRAM Patents: Who Leads, Where the Gaps Are 2026
Resistive Random Access Memory Patents: Concentration, Momentum and Open Claim Space
51.0% of all 2,429 records in scope sit with just five assignees — filing here is heavily concentrated at the top, not evenly spread. Filing rose from 190 records in 2017 to a peak of 210 in 2021, then declined to 124 by 2024 — a 41% drop over that three-year span. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continued fall.
- 1MICRON TECHNOLOGY INC365
- 2TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD330
- 3INTERMOLECULAR INC199
- 4INTERNATIONAL BUSINESS MACHINE CORPORATION194
- 5CROSSBAR INC151
See the full resistive random access memory 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 RRAM patenting
Who holds the most RRAM patents?
The leading assignee in this dataset holds 365 records, well ahead of the fifth-ranked filer at 151 and the tenth at 60. The top five assignees combined hold 51.0% of all 2,429 records in scope, and the top ten hold 72.4%. This means filing is heavily concentrated among a small group rather than spread evenly across the 100 companies in the ranked list, so any competitive review should start with the leaders and treat the remaining ranked assignees as a long tail of narrower positions.
Is RRAM patent filing growing or slowing down?
Filing peaked in 2021 at 210 records and declined to 124 by 2024, a 41% drop over three years — the most reliable read available because 2024 is the last year the dataset treats as complete. Figures for 2025 and 2026 are lower still, but that reflects the roughly 18-month lag between filing and publication rather than a real collapse in activity. Anyone tracking this trend should wait for another filing cycle to complete before treating the recent years as a genuine slowdown.
What technology areas dominate RRAM patent claims?
H01L (semiconductor devices) appears in 64.7% of the 2,429 records in scope, making it the dominant classification, followed by G11C (static and digital memories) at 41.1% and H10N (other electric solid-state devices) at 29.5%. Because a single record can carry several IPC classes, these percentages add up to more than 100% of records — they show where claim density concentrates, not a clean split of the field. Lower-density classes like G06F (6.5%) and H03K (3.4%) mark areas with comparatively less claim coverage.
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 Resistive Random Access Memory 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.