Magnetoresistive Memory Patents: Who Leads, Where the Gaps Are 2026
Magnetoresistive memory and spintronics patents: mapping who owns the magnetic tunnel junction
32.5% of all 4,386 records sit with just five assignees, yet the ranked leaders run to 100 companies with a long single-filing tail behind them. Filings ran at 396 in 2017 and rose to a peak of 428 in 2019. The last complete comparison window, 2021 to 2024, shows a drop from 182 to 92 records — a 49% decline — but 2025 and 2026 figures are still filling in under the roughly 18-month publication lag, so treat the tail of the curve as incomplete rather than as a slowdown.
- 1SAMSUNG ELECTRONICS CO LTD436
- 2TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD326
- 3AVALANCHE TECHNOLOGY INC240
- 4MICRON TECHNOLOGY INC222
- 5QUALCOMM INC202
See the full magnetoresistive memory and spintronics 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 magnetoresistive memory and spintronics patents?
The assignee ranking behind this landscape covers 100 companies, and it is led by a single assignee with 436 records, well ahead of the fifth-placed company at 202. That said, the top five assignees together hold only 32.5% of the 4,386 records in scope, and the top ten reach 50.1% — so no single company controls the field outright, and roughly half the corpus sits with companies outside the top ten. Anyone assessing competitive risk should look at both the leader’s core claims and the long tail of smaller filers working adjacent variations.
Is MRAM patent filing activity slowing down?
Filings peaked in 2019 at 428 records, and the last fully comparable window, 2021 to 2024, shows a 49% drop from 182 to 92 records. However, patent publication typically lags actual filing by around 18 months, so the 2025 and 2026 counts in this dataset are still incomplete and should not be read as proof the field has gone quiet. The honest reading is that filing activity cooled through 2024, with the most recent trend still an open question.
What technical parameters define claims in this space?
This landscape is built around filings that combine core magnetic tunnel junction or spin-transfer-torque architecture claims with specific performance parameters: tunnel magnetoresistance ratio, switching current density, thermal stability factor, perpendicular anisotropy, write error rate and back-end integration. These parameters are what separate a manufacturable, foundry-ready MRAM cell from a purely conceptual spintronic device claim, which is why they anchor the search scope for this dataset.
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 Magnetoresistive Memory and Spintronics 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.