Perovskite Encapsulation Patents: Leaders, Trends & White Space 2026
- 48.0% concentration at the top. The top 5 of 20 ranked assignees hold 12 of all 25 records in scope (48.0%), with a long tail of single- and double-filing entrants behind them.
- Filing has cooled since 2018. Activity peaked at 5 records in 2018; the 2022 midpoint sits at just 1 record, pointing to flat or declining filing momentum rather than a technology in ramp-up.
- Laminate structures dominate the claim space. B32B (layered products & laminates) appears in 28.0% of the 25 records, more than double the next largest class, meaning most protection sits on physical barrier and lamination architecture rather than test methodology.
Filing growth compares 2021 (2 records) with 2024 (2) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 25 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent activity at the intersection of perovskite module encapsulation and damp heat testing — the barrier films, edge seals, lamination processes and accelerated ageing methods that determine whether a perovskite photovoltaic module survives moisture ingress and thermal cycling in the field. The scope draws on 25 published records with classification, citation and assignee data spanning 2015 through the 2026 data cut-off.
Because publication lags filing by roughly 18 months, the most recent filing year in this dataset is understated and should not be read as a drop-off in real activity. Family-level counts are used throughout in preference to raw document counts, since families neutralise the effect of aggressive continuation filing and multi-jurisdiction duplication.
Let an AI agent run this analysis on your own technology
Pick a task. Every answer cites the patents behind it.
Filing trend and technology composition
Two views of the same 25-record dataset: filing activity by year, and how those records distribute across IPC subclasses. Because a single record can carry several classes, the class shares below sum to more than 100% of the record total.
Filing trend, 2017-2026
Filing peaked at 5 records in 2018 and has not returned to that level since; the 2022 midpoint of 1 record confirms a flat-to-declining trajectory rather than renewed momentum. The most recent year is partial and will understate true activity once later publications land.
IPC subclass composition
B32B (layered products & laminates) leads at 28.0% of the 25 records in scope, followed by G01N (material analysis & testing) at 16.0%. B26D, G06T, A61F, G01B, G06V and H01M each sit at 8-12%, indicating the field's protection is split between physical laminate architecture and a scatter of measurement, imaging and adjacent-application classes.
Shares are the percentage of the 25 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Perovskite Module Encapsulation and Damp Heat with Eureka
This page is one run against one query. Ask Eureka your own question about perovskite module encapsulation and damp heat and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Encapsulated device having edge seal and methods of making the same (US20150351167A1)
An encapsulated device includes a barrier laminate on the device, and adhesive between the barrier laminate and the device, and an edge sealing member at an edge of the encapsulated device. The edge sealing member may be embedded in the adhesive, may enclose the adhesive between the barrier laminate and the device, or may cover an edge portion of the barrier laminate and an edge portion of the adhesive.Filed by Samsung SDI, 2015-12-03. Claims center on the edge-sealing member's placement relative to the barrier laminate and adhesive rather than on a specific material chemistry.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | GB2389794A | Wound dressing with variable shape | 130 |
| 2 | US20090208754A1 | Method for edge sealing barrier films | 83 |
| 3 | US20210197520A1 | Thermal insulation materials and methods thereof | 15 |
| 4 | WO2020019114A1 | Thermal insulation materials and methods thereof | 14 |
| 5 | JP1986061372A | Gas impermeable edge seal for bipolar gas distribution assembly for use in fuel battery | 10 |
| 6 | CN203566816U | 封边机精确送切带控制系统 | 6 |
| 7 | US20150351167A1 | Encapsulated device having edge seal and methods of making the same | 5 |
| 8 | CN119359634A | 一种产品封边缺陷检测方法、装置及存储介质 | 4 |
| 9 | JP1992332858A | Method for evaluating sealing property of edge portion of heavy-duty corrosion-resistant steel plate | 4 |
| 10 | CN217861455U | 一种锂电池封装切边机构 | 2 |
Citation counts inside a searched corpus favour older records by construction; treat the ranking as a signal of influence on later filers, not as a measure of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for filing strategy
Three read-outs from the dataset that matter more than the raw record count: where claim density concentrates, how citation influence is distributed, and what the geography of filing implies about examination risk.
A leader plus a long tail
The leading assignee holds 7 records outright, and the top 5 of 20 ranked assignees together account for 12 of the 25 records in scope (48.0%). Below that, filing thins quickly into single- and double-record entrants, which means most of the ranked field has filed only once or twice on this exact search string.
Laminate structure is the dominant claim vector
B32B (layered products & laminates) is the single largest IPC subclass at 28.0% of records, well ahead of G01N testing-method claims at 16.0%. That skew suggests the field's contested ground is barrier film and lamination architecture, not the damp-heat test protocol itself.
Filing is weighted toward China
Of the receiving offices recorded, China accounts for 11 filings against 4 in the United States, 3 in the United Kingdom, 2 each in India and Japan, and 1 in Austria. A China-first filing pattern in this space warrants a freedom-to-operate check localized to Chinese examination outcomes before assuming US or EP precedent controls.
Activity has not returned to its 2018 peak
The filing trend peaked at 5 records in 2018, with the 2022 midpoint down to 1 record. Combined with the recent-year momentum data showing multiple tracked assignees at zero in the latest year, the pattern reads as a field that has cooled rather than one building toward a new filing wave.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to perovskite module encapsulation and damp heat, with the prior art for and against each one.
Who is filing, and where the ranked field thins
The assignee ranking covers 20 companies and organisations across the 25 records in scope. One filer sits well ahead of the rest; from fifth place down, filing counts drop to single digits and then to single records.
One filer well ahead of the field
The top-ranked assignee holds 7 of the 25 records in scope, roughly triple the count at fifth place. That gap is wide enough that a freedom-to-operate review in this space should start with the leader's claim set before moving to the long tail.
A flat mid-field below the leader
Fifth place and tenth place both sit at 1 record apiece, meaning the ranking flattens out quickly after the leader and a handful of others. Most of the ranked field has only a single documented filing on this exact search string.
Co-filing is rare and concentrated
Only 3 co-assignee pairs appear across the dataset, and the strongest of them links the same corporate assignee with two individual co-inventors. There is no evidence here of a broad cross-licensing or joint-development network forming around encapsulation claims.
| Assignee | Recent year | YoY |
|---|---|---|
| 3M Innovative Properties Company (USA) | 0 | — |
| Johnson & Johnson Medical | 0 | — |
| LI MINGZHU | 0 | — |
| Suzhou Dubaist Intelligent Equipment Co., Ltd. | 0 | — |
| The Government of the United States of America, as represented by the Secretary, Department of Health & Human Services | 0 | — |
| Vitek Systems Ltd. | 0 | — |
| Fuyao Glass Industry Group Co., Ltd. | 0 | -100% |
| Huzhou Shenwang Wood Industry Co., Ltd. | 0 | — |
Where to take this analysis
The dataset points to a concentrated but cooling field with claim density sitting mostly on laminate architecture rather than test methodology. Three directions follow from that.
Check freedom to operate against the leader first
With 7 of 25 records held by a single assignee, any new filing or product design in edge sealing or barrier lamination should be checked against that leader's claim set before the rest of the field.
Run a freedom-to-operate check in EurekaProbe the under-claimed sub-areas
Iodine-specific outgassing containment and combined thermal-cycling-plus-damp-heat protocols show thin direct coverage relative to the core laminate classes, which is where a narrowly drafted first claim is more likely to clear prior art.
Explore white space in EurekaWatch for the publication-lag correction
The 2022 midpoint and later years understate true filing activity because publication lags filing by roughly 18 months; revisit the trend once the most recent two years have fully published.
Track filing trends in EurekaCommon questions about this landscape
It is moderately concentrated. The top 5 of 20 ranked assignees hold 12 of the 25 records in scope, which is 48.0% of the field, and the leading single assignee accounts for 7 records outright. Below the top 5, filing counts drop quickly, with fifth place and tenth place both sitting at just 1 record. That pattern means a small group of filers controls close to half the documented activity, while most of the ranked field has filed only once or twice.
The trend has cooled rather than accelerated. Filing peaked at 5 records in 2018, and by the 2022 midpoint had fallen to just 1 record, indicating flat or declining activity through the middle of the dataset's range. The most recent year is partial and understated because publication typically lags filing by around 18 months, so a full picture of the last two years will not be visible yet. Even accounting for that lag, the multi-year plateau after 2018 suggests this is not currently a fast-growing filing area.
B32B, covering layered products and laminates, is the largest single class at 28.0% of the 25 records in scope, reflecting how much of the claim activity centers on barrier film and laminate structure rather than test methods. G01N, material analysis and testing, follows at 16.0%. Smaller shares of 8-12% sit in B26D cutting machinery, G06T and G06V imaging, A61F implants, G01B measurement and H01M battery classes, showing the field also touches manufacturing and adjacent-application technologies. Because records can carry multiple IPC codes, these shares add up to more than 100% of the record total.
The dataset points to several under-claimed sub-areas relative to the dominant laminate and testing classes: iodine-specific outgassing containment, lead-migration barrier validation, combined thermal-cycling-plus-damp-heat protocols, edge-seal adhesion tied to lamination temperature limits, and correlation methods linking accelerated ageing results to field performance. None of these appear as a dedicated leading IPC class in this dataset, which suggests thinner direct prior art for a narrowly drafted claim in those specific mechanisms. A freedom-to-operate search focused on the leading assignee's portfolio is still the right first step before drafting into any of these branches.
China leads the receiving offices recorded in this dataset with 11 filings, ahead of the United States at 4, the United Kingdom at 3, and India and Japan at 2 each, with Austria recording 1. That distribution suggests examination outcomes and prior art in Chinese filings are especially relevant to any strategy in this space, and a review limited to US or European precedent alone would miss most of the documented activity.
Research Perovskite Module Encapsulation and Damp Heat in depth with Eureka
Go past this page: query the whole perovskite module encapsulation and damp heat corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.