Power Conversion System for Storage Patents: Leaders, Filing Trends and White Space
Concentration is modest. the top 5 assignees hold only 13.2% of the 1,072 records in scope, and the top 10 hold 21.4% — this field has not consolidated the way some adjacent storage categories have. Annual filings rose from 30 in 2017 to a peak of 119 in 2025, though 2025 and 2026 figures will keep revising upward as publications catch up. Treating 2021–2024 as the reliable window, volume held essentially flat: 92 filings in 2021 versus 90 in 2024, a -2% change — a plateau rather than a retreat.
- 1DYNAPOWER COMPANY3.0%
- 2CUMMINS POWER GENERATION IP INC2.8%
- 3CMBLU ENERGY AG2.7%
- 4GENERAL ELECTRIC CO2.6%
- 5DEKA PRODUCTS LP2.1%
See the full power conversion system for storage 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 many patents exist for power conversion systems used in energy storage?
This dataset identifies 1,072 published records in scope, covering filings from 2015 through mid-2026. The scope combines battery energy storage, bidirectional inverter and energy storage converter terminology with operational concerns like DC bus voltage control, round-trip efficiency, auxiliary consumption, insulation monitoring, cooling design and modular architecture. Because publication lags filing by roughly 18 months, the most recent one to two years in this count will keep rising as more filings publish.
Who are the leading patent holders in storage power conversion?
The ranking behind this landscape covers 100 companies, with the top-ranked assignee holding 32 of the 1,072 records and the fifth-ranked holder 22. Concentration is modest overall: the top 5 assignees combined account for only 13.2% of all records in scope, and the top 10 for 21.4%, meaning the large majority of filings sit with companies outside the most active filers. That pattern suggests the space is still open to new entrants rather than locked up by a small group of incumbents.
Is patent filing activity in this field growing or slowing down?
Filing counts rose from 30 in 2017 to a provisional peak of 119 in 2025, but the only span reliable enough to call a trend is 2021 to 2024, where filings moved from 92 to 90 — a -2% change, essentially flat. Later years (2025 and 2026) will revise upward as publications catch up, since patent publication typically lags filing by around 18 months. Reading those recent years as a slowdown would be a mistake; the honest read is a plateau in the confirmed data with genuine uncertainty in the newest years.
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 Power Conversion System for Storage 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.