Solid State Battery Testing and Safety Patents: Who Leads and Where the Claims Sit
38.1% concentration. The top 5 assignees alone account for 1,672 of the 4,394 records in scope — filing here is already concentrated at the top. Filings rose from 229 in 2017 to a peak of 508 in 2022, then eased to 291 by 2024 — a 19% decline from the 2021 level of 359 over that three-year span. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continued fall.
- 1LG ENERGY SOLUTION LTD22.6%
- 2LG CHEM LTD5.4%
- 3PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD3.6%
- 4MURATA MFG CO LTD3.2%
- 5PANASONIC HOLDINGS CORP3.2%
See the full solid state battery testing and safety 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
Who holds the most patents in solid state battery testing and safety?
One assignee leads the ranked field with 994 records, well ahead of the fifth-place company at 140 and tenth place at 75. The top 5 assignees combined hold 1,672 records, which is 38.1% of the 4,394 records in scope, and the top 10 extend that to 49.7%. That leaves roughly half the field spread across a long tail of smaller filers, so the picture is a clear leader plus a broad second tier rather than several evenly matched players.
Is solid state battery patent filing still growing?
Filing activity peaked at 508 records in 2022 and had eased to 291 by 2024, a 19% decline from 2021's 359 over that three-year span. That is the most reliable read because 2024 is the last year with largely complete publication data; 2025 and 2026 figures are still filling in due to the roughly 18-month lag between filing and publication, so they should not be read as evidence of a continuing drop.
What testing methods are most represented in solid state battery patents?
The dataset is built around nail penetration testing, thermal runaway onset detection, gas generation monitoring, pressure fixture testing, impedance spectroscopy and operando imaging, but the IPC data shows most records still classify primarily as battery construction (H01M, 94.0% of records) rather than measurement technique (G01R, 4.7%). That gap indicates safety-testing methodology itself is a comparatively under-claimed discipline relative to the cells it is used to qualify.
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 Solid State Battery Testing and Safety 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.