Hybrid Energy Storage System Control Patents: Leaders & Gaps 2026
Hybrid energy storage system control patents: who is filing, and where the claim space is still open
Filing nearly tripled in three years — 2021's 2 filings grew to 5 by 2024, a +150% span, before 2025's partial-count peak of 12. Filings moved from 0 in 2017 to a partial count of 8 in 2026, with the tracked complete-year growth running from 2 filings in 2021 to 5 in 2024 (+150%) and a peak of 12 in 2025. Because publication typically lags filing by roughly 18 months, the 2025 and 2026 figures are undercounts still filling in, not evidence of a plateau.
- 1THE RGT UNIV OF MICHIGAN8
- 2NEC CORP8
- 3CLEMSON UNIV RES FOUND6
- 4ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)5
- 5MARQUETTE UNIVERSITY5
See the full hybrid energy storage system control 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 patent landscape
Who holds the most patents in hybrid energy storage system control?
The leading assignee in this 97-record dataset holds 8 records, with the top 5 assignees combined accounting for 33.0% of all records in scope. That is a modest concentration compared with more mature fields, meaning no single company currently sets the terms of the claim space. The remaining two-thirds of filings are spread across a long tail of universities, grid operators and smaller industrial filers, several with only one or two records each.
Is hybrid energy storage system control patent activity growing or slowing?
It is growing. Complete-year data shows filings rising from 2 in 2021 to 5 in 2024, a +150% increase over that span, with a peak of 12 filings recorded in 2025. Because patent publication typically lags actual filing by around 18 months, the 2025 and 2026 counts are still incomplete and should not be read as a slowdown — they will likely rise as more filings publish.
Which patent classes cover hybrid energy storage control technology?
The dominant classes are H02J (power supply and grid systems), present in 67.0% of the 97 records, and H02M (power conversion), present in 27.8%. B60L (electric vehicle propulsion) appears in 18.6% of records and H01M (batteries, cells and fuel cells) in 7.2%, marking the vehicle-integration and cell-level edges of the field. Because records often carry multiple IPC codes, these shares add up to more than 100% of the total.
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 Hybrid Energy Storage System Control 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.