Flexible Packaging Barrier Coating Patents: Top Companies & Trends 2026
A data-backed look at flexible packaging barrier coating patents: who leads filings, how technology composition splits across IPC classes, filing trends through 2024, and where white space remains for new entrants.
Filing growth = 2021 (13 records) → 2024 (6); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 234 records in scope (CR5), not the ranked leaders only.
What the barrier coating claim space looks like today
Flexible packaging barrier coatings sit at the intersection of container design, laminate structure and coating chemistry. Across the 234 records examined here, the dominant claim activity is not in coatings chemistry itself but in how coatings are integrated into containers and layered film structures. B65D (containers & packaging) and B32B (layered products & laminates) together cover the majority of filings, which tells a practitioner that structural integration claims are more heavily contested than the underlying barrier chemistry.
Assignee concentration is moderate rather than extreme: the leading filer holds 29 records, but the drop to fifth place (8) and tenth place (6) is gradual, not a cliff. That shape favours a mixed strategy — watch the leader's continuations closely, but expect meaningful prior art from mid-tier filers too, not just the top name.
Filing trend and technology composition
The dataset spans records published from 2015 through the 2026 cut-off, covering 234 records across six major receiving offices.
A 2021 peak followed by a documented pullback
Annual filings rose from 9 in 2017 to a peak of 13 in 2021, then fell to 6 by 2024 — a decline of 54% over that three-year, complete-year window. Because publication lags filing by roughly 18 months, the lighter counts shown for 2025 and 2026 are still filling in and should not be read as a continuation of the decline.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
Structural classes outweigh coating-specific chemistry
B65D (65.4% of records) and B32B (59.4%) lead technology composition, followed by C09D coatings (20.1%), C08L polymer compositions (16.2%), and the paper-related D21H/D21C classes (14.1% and 10.7%). Because records can carry multiple IPC classes, these figures sum to well over 100% of the 234-record base — the pattern to note is that container and laminate integration claims outnumber pure coating-chemistry claims by a wide margin.
Shares are the percentage of the 234 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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Try EurekaThe most-cited prior art and a representative filing
US9102125B2 — Printed flexible film for food packaging
The printed image on a major face of a flexible food packaging film is covered by a shellac barrier coating.Filed by Mantrose-Haeuser Co., Inc. in 2015, this record ties a specific coating material — shellac — to a specific function: protecting a printed image while also acting as a barrier layer, rather than claiming barrier performance in the abstract.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6048558A | Method of packaging refrigerated meal in a package containing an anti-fog agent | 123 |
| 2 | US20070231571A1 | Pressure sensitive adhesive (PSA) laminates | 103 |
| 3 | US20050208188A1 | Grinding meat into low-oxygen atmosphere | 85 |
| 4 | US20030235664A1 | Films having a desiccant material incorporated therein and methods of use and manufacture | 84 |
| 5 | US20030134966A1 | Barrier compositions and articles made therefrom | 67 |
| 6 | JP1986220839A | Flexible laminated packaging material having excellent resistance to fatigue from flexing and gas barrier pro… | 58 |
| 7 | US20060263596A1 | Pressure sensitive adhesives (PSA) laminates | 57 |
| 8 | CN102328779A | 阻隔聚合物锂电池内容物的高阻隔层软包装膜 | 56 |
| 9 | WO2004000541A1 | Films having a desiccant material incorporated therein and methods of use and manufacture | 51 |
| 10 | US20060251890A1 | Pressure sensitive adhesive (PSA) laminates | 50 |
Citation counts favour older records simply because they have had longer to accumulate citations within this corpus; treat them as a signal of influence on subsequent filings, not as a measure of current commercial importance.
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.
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Browse MCP servers →What the numbers mean for filing strategy
Four figures from this dataset carry direct implications for where to file, who to watch, and where claim space remains genuinely open.
Leadership is real but not a monopoly
The top five assignees combined account for 38.5% of all 234 records in scope, with the leader alone at 29. That leaves the majority of the field distributed across 88 ranked companies, many with only a handful of filings — a structure that rewards freedom-to-operate searches beyond the obvious leader.
Activity has cooled from its 2021 peak
Filings rose to a peak of 13 in 2021 and fell to 6 by 2024, a decline of 54% across the last three complete years of data. That is a genuine pullback in new filing activity, not an artefact of publication lag, since both endpoints are complete years.
Coating chemistry is the smaller share of the claim space
Only 20.1% of the 234 records sit in C09D (coatings, paints & inks), against 65.4% in B65D and 59.4% in B32B. Structural and laminate integration claims dominate; a pure coating-chemistry filing faces a comparatively less crowded field than a packaging-structure filing does.
Older packaging patents still anchor the field
The most-cited record in this corpus, on anti-fog packaging methods, carries 123 citations — a reminder that citation weight in a searched corpus accumulates with age and does not indicate which claims matter most today.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to flexible packaging barrier coating patent landscape, with the prior art for and against each one.
Turning this landscape into a filing decision
The figures above describe where claim density sits today; the next step is testing a specific formulation or structure against that density.
Run a freedom-to-operate check on structural claims
Given how concentrated B65D and B32B claims are, a new laminate or container structure should be checked against both classes before drafting, not just against the coating chemistry itself.
Explore Patsnap Eureka →Watch mid-tier filers, not just the leader
With filings spread across 88 ranked companies, competitive monitoring should extend past the top name to the assignees holding six to eight records apiece.
Explore Patsnap Eureka →Reassess coating-chemistry white space
At 20.1% of records, C09D claim density leaves room for formulation-specific filings that container and laminate claims do not cover.
Explore Patsnap Eureka →Common questions on flexible packaging barrier coating patents
The leading assignee in this dataset holds 29 of the 234 records in scope, with the next four ranked assignees bringing the top five combined total to 38.5% of all records. Beyond that, the field spreads across 88 ranked companies, many holding only a handful of filings. This means no single company controls the space outright, but a small group of leaders does account for a disproportionate share of activity, so any competitive review should start there before widening to the long tail.
Complete-year data shows a decline: filings peaked at 13 in 2021 and fell to 6 by 2024, a drop of 54% across that three-year span. Figures for 2025 and 2026 appear lower still, but that is expected because publication lags filing by roughly 18 months, so those years are not yet complete and should not be read as confirming a continued fall. The safest conclusion is that filing activity cooled meaningfully between 2021 and 2024.
Structural and laminate integration claims dominate over pure coating chemistry. B65D (containers & packaging) covers 65.4% of the 234 records and B32B (layered products & laminates) covers 59.4%, while C09D (coatings, paints & inks) covers only 20.1%. Because a single record can carry multiple IPC classes, these figures overlap and sum above 100%, but the pattern is clear: how a barrier coating is built into a container or laminate structure is more heavily claimed than the coating formulation itself.
US9102125B2 claims a printed flexible food packaging film where the printed image on a major face is covered by a shellac barrier coating. The scope is narrow and specific: it ties a particular coating material, shellac, to a particular dual function of protecting the print and providing a barrier layer. It does not claim barrier coatings generally, so it is unlikely to block filings built around different coating chemistries or different functional pairings, but it is directly relevant to anyone combining a printed layer with a natural-resin barrier coating.
The clearest under-claimed area relative to its structural counterparts is coating-specific chemistry: C09D sits at 20.1% of records against 65.4% for B65D and 59.4% for B32B. Polymer composition and processing classes (C08L, C08J) and the paper-related D21H/D21C classes also sit well below the structural classes, suggesting formulation and paper-substrate work is comparatively less crowded than container or laminate design. A first claim in this space would do well to specify a coating chemistry tied to a defined substrate and barrier performance metric, rather than a generic container or laminate structure.
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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.