Power Semiconductor Patents: Who Leads, Where the Gaps Are 2026
Power semiconductor patents: mapping who files, what they claim, and where the field is still open
23.4% concentration at the top. The five most active assignees account for 375 of the 1,603 records in scope, well short of a monopolised field but enough to make the front of the claim space crowded. Annual filings climbed from 59 in 2017 to a peak of 99 in 2020, then declined — 83 in 2021 down to 50 in 2024, a 40% drop over that span. Treat 2025 and 2026 as still filling in rather than as evidence of a further slowdown, since publication typically lags filing by around 18 months.
- 1SEMICON COMPONENTS IND LLC7.0%
- 2INFINEON TECHNOLOGIES AG4.7%
- 3GENERAL ELECTRIC CO4.4%
- 4PARAGRAF LTD4.1%
- 5FUJI ELECTRIC CO LTD3.2%
See the full power semiconductors patent landscape 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 power semiconductor patents
Who holds the most power semiconductor patents?
The dataset’s leading assignee holds 112 of the 1,603 records in scope, with the field concentrating somewhat further down: the top five assignees combined hold 375 records, or 23.4% of the total. That leaves more than three-quarters of the corpus spread across a long tail of other filers, so no single company controls the space outright. Anyone assessing freedom to operate should check the leading five to ten names first, then move to the mid-field ranked assignees for narrower structural claims.
Is power semiconductor patent filing growing or slowing down?
Filings rose steadily from 59 in 2017 to a peak of 99 in 2020, then declined to 50 by 2024, a 40% drop over that three-year span. Because publication typically lags filing by around 18 months, the 2025 and 2026 figures in the dataset are still incomplete and should not be read as proof the decline is continuing. The safest read is that activity cooled from its 2020 peak through 2024, with the most recent trend still an open question.
Which technology areas carry the most patent claims in power semiconductors?
H01L, the general semiconductor devices classification, covers 59.5% of the 1,603 records and is the densest single area. H10D and H10W each sit near 15%, while H05K (printed circuits and assemblies) and H02M (power conversion) each carry roughly 10-12% of records. Since records can carry multiple classifications, these figures overlap rather than sum to 100%, and the spread shows that packaging and conversion circuitry are meaningfully claimed alongside core device structure.
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 Semiconductors Patent Landscape covering 2015–2026, data cut-off 2026-08-31. 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.