Perovskite Stability Patents: Top Companies & Filing Trends 2026
Perovskite Stability and Degradation Pathways: Patents Behind the Race to Durable Cells
Concentration is moderate, not dominated: the top 5 assignees hold 31.0% of all 387 records in scope, and the top 10 hold 43.2% — a leader plus a genuine long tail, not a single-owner field. Annual filings rose from 4 in 2017 to a peak of 85 in 2025. The 2021-to-2024 window shows a 48% decline, but 2025 and 2026 figures are still filling in under the roughly 18-month publication lag, so the most recent years should not be read as a fall-off in real research activity.
- 1LG ENERGY SOLUTION LTD36
- 2THE UNIV OF NORTH CAROLINA AT CHAPEL HILL27
- 3SK ON CO LTD23
- 4CAELUX CORP20
- 5SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION14
See the full perovskite stability and degradation pathways 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 perovskite stability patents
What are the main degradation pathways covered by perovskite stability patents?
This landscape is built around ion migration, moisture ingress, and light- or UV-induced degradation, tested in filings against standards like damp heat and maximum power tracking. Reverse bias stress also appears as a distinct failure mode, particularly relevant to module-level rather than cell-level durability claims. Most filings target one or two of these mechanisms specifically rather than claiming broad-spectrum protection, which is why mechanism-level searching matters more than a single topic search.
Who are the leading patent filers in perovskite stability and degradation?
The ranked leaders include battery manufacturers such as LG Energy Solution and SK On, dedicated perovskite ventures such as Caelux Corp, and universities including Oxford, the University of Arizona and Seoul National University. The leader holds 36 records with a sharp drop after the top few positions, then a long tail of single- and few-filing entrants across the remaining ranked companies. This mix of industrial and academic assignees suggests the underlying chemistry is still being worked out in labs even as manufacturers file around it.
Is perovskite stability patent filing activity increasing or decreasing?
Filings rose from 4 in 2017 to a peak of 85 in 2025, but the only reliable growth comparison is the 2021-to-2024 window, which shows a 48% decline. Because patent publication lags filing by roughly 18 months, the 2025 and 2026 figures are still incomplete and should not be read as either a rebound or a slowdown yet. A clearer growth-rate read will only be possible once 2025 and 2026 filings finish publishing.
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 Perovskite Stability and Degradation Pathways 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.