Reactive Power Compensation Equipment Patents: Who Leads and Where Claims Concentrate
Filing peaked in 2021 at 93 records, then fell 41% to 55 by 2024 — the last year publication lag lets us call complete. Filings rose from 42 in 2017 to a peak of 93 in 2021, then declined to 55 by 2024 — a 41% drop over that three-year span. 2025 and 2026 figures are understated by publication lag and should not be read against the peak.
- 1VESTAS WIND SYSTEMS AS9.0%
- 2STATE GRID CORPORATION OF CHINA3.7%
- 3VARMA RAJIV KUMAR3.1%
- 4GENERAL ELECTRIC CO3.0%
- 5AMERICAN SUPERCONDUCTOR CORP2.8%
See the full reactive power compensation equipment 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 reactive power compensation patents
Who holds the most patents in reactive power compensation equipment?
The leading assignee in this dataset holds 124 of the 1,371 records in scope, a wind-turbine OEM whose filings concentrate on grid-support functions built into turbine converters. The top 5 assignees combined hold 21.7% of all records, and the top 10 hold 33.2%, which means the majority of filings are spread across the remaining 90 ranked entities. This is a moderately concentrated field rather than one dominated by a single player, so a freedom-to-operate check needs to look well past the first few names.
Is patent filing in reactive power compensation growing or slowing?
Filing rose from 42 records in 2017 to a peak of 93 in 2021, then fell 41% to 55 by 2024, the most recent year clean of publication lag. Counts for 2025 and 2026 appear lower still in the raw data, but that is an artefact of the roughly 18-month gap between filing and publication, not evidence of continued decline. The honest read is a field that has cooled from its 2021 peak but has not shown a confirmed slowdown beyond 2024.
What technology areas dominate reactive power compensation patents?
H02J, covering power supply and grid systems, appears in 83.7% of the 1,371 records, making it by far the dominant classification. H02M (power conversion) at 20.3% and G05F (control of electric variables) at 10.9% form a secondary layer, while F03D (wind motors) at 9.6% marks the subset tied to wind-turbine integration. Because records can carry multiple IPC codes, these shares overlap rather than sum to 100%, reflecting how compensator claims typically span both grid-control and conversion-hardware categories.
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 Reactive Power Compensation Equipment 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.