Flexible Barrier Packaging Patents: Leaders & Filing Trends 2026
A data-led review of flexible barrier packaging patents: who holds the most families, where filings peaked, and which IPC branches remain under-claimed through 2026.
Filing growth = 2021 (16 records) → 2024 (3); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 323 records in scope (CR5), not the ranked leaders only.
What the flexible barrier packaging patent record actually shows
Flexible barrier packaging covers materials and constructions that keep a flexible pack impermeable to gas, moisture or contamination while remaining light and collapsible — the opposite trade-off to rigid barrier containers. The 323 records in scope span 2015 through the 2026 cut-off and cluster overwhelmingly in B65D (containers and packaging) with a strong secondary presence in B32B laminate and layered-product claims, meaning most of the inventive work sits in how barrier layers are built and sealed rather than in wrapping or handling equipment.
The assignee spread is uneven but not a single-company field: a handful of filers account for roughly a third of all records, and the rest is thinly distributed across a hundred-plus entities, many with only one or two families. That pattern rewards a freedom-to-operate search focused on the leaders' specific claim constructions rather than a blanket clearance across the whole field.
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Filing trend and technology composition
Two views of the same 323 records: how filing activity moved year over year, and how those records split across IPC subclasses.
Filing trend, 2017-2026
Filings rose from a single record in 2017 to a peak of 16 in 2021, then declined to 3 by 2024 — an 81% fall over that three-year window. 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so the apparent tail-off should not be read as the field cooling; the last complete comparison point remains 2021 to 2024.
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.
IPC subclass composition
B65D touches 94.4% of all 323 records, confirming this is fundamentally a containers-and-packaging field. B32B laminate claims reach 42.7% and B65B wrapping/packaging processes 22.6%, while smaller adjacent branches — body-fluid devices, luggage, paper compositions, spectacles and baking — each sit below 9%, showing where barrier packaging technique has crossed into specialised end uses versus where it has not.
Shares are the percentage of the 323 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Flexible Barrier Packaging Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about flexible barrier packaging patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative claim construction
Packaging material and containers formed therefrom
The flexible, reusable packaging container of the present invention is comprised of a packaging material. The packaging material is comprised of one or more layers of coating disposed on one or more layers of textile substrate. The coating layer may be comprised of a stiffening agent for providing support to the packaging container. The stiffening agent may provide a gas and/or liquid impermeable barrier between the contents of the container and the textile substrate. The stiffening agent may also include chemicals which impart antifungal or antibacterial properties to container.Filed by Milliken & Company; published 2003-02-13.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6622864B1 | Moisture resistant package for storing sterile items | 144 |
| 2 | US20040238380A1 | Packaging for disposable soft contact lenses | 125 |
| 3 | US6048558A | Method of packaging refrigerated meal in a package containing an anti-fog agent | 123 |
| 4 | US5097107A | Microwave corn popping package having flexible and expandable cover | 90 |
| 5 | US20140099455A1 | Flexible Barrier Packaging Derived From Renewable Resources | 86 |
| 6 | US5131537A | Flexible tip tray packaging for medical catheters | 86 |
| 7 | US20050208188A1 | Grinding meat into low-oxygen atmosphere | 85 |
| 8 | US20030235664A1 | Films having a desiccant material incorporated therein and methods of use and manufacture | 84 |
| 9 | US4120984A | Process for preparing food in the package | 83 |
| 10 | WO2003016175A1 | Packaging for disposable soft contact lenses | 75 |
Ranked by citation count within the searched corpus; older records accumulate more citations simply by being available longer, so treat this as a signal of influence rather than current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the concentration and trend numbers mean for a filing decision
Three figures shape how a new entrant should approach this space: where filings are concentrated, when the field peaked, and which branches remain thin.
A moderately concentrated top, a long tail below it
The leader holds 27 records and the fifth-ranked assignee 15, with the top 10 combined reaching 48.3% of all 323 records. Below that, the ranked list of 100 companies thins quickly to single-digit and single-filing entrants, so most of the field is held by parties without a defensive patent thicket.
Activity peaked in 2021, not now
Filings ran from 1 in 2017 up to a peak of 16 in 2021, then fell to 3 by 2024 — an 81% decline across that span. Because publication lags filing by about 18 months, the 2025-2026 figures are still incomplete and should not be read as confirmation the field is still declining.
Laminate structure is the dominant claim axis
Nearly every record touches B65D containers, but the meaningful split is B32B laminates at 42.7% against B65B packaging/wrapping processes at 22.6%. That gap suggests structural/material claims outnumber process claims almost two to one across the corpus.
US and EPO carry the bulk of filing activity
The United States leads receiving offices with 77 filings, ahead of EPO at 42 and WIPO/PCT at 36; Canada, Australia and India each sit in the teens to low thirties. A freedom-to-operate check weighted toward US and European filings will cover most of the documented activity.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to flexible barrier packaging patent landscape, with the prior art for and against each one.
Where to take this analysis next
The figures above describe the field as filed. Turning them into a filing or freedom-to-operate decision means going claim by claim.
Map the leaders' specific claim constructions
The top 5 assignees hold a third of all records between them; reading their independent claims directly, rather than relying on class-level counts, is the fastest way to find where new filings would actually collide with existing rights.
Explore assignee claims in EurekaTrack the under-claimed branches
Branches like baking (5.6%) and spectacles (7.1%) show barrier packaging technique has migrated into niche end uses at low density — a candidate space for a first-mover claim rather than a crowded one.
Run a white-space search in EurekaWatch for the 2025-2026 publication catch-up
Because publication lags filing by roughly 18 months, the apparent 2024 low is not necessarily the field's floor; re-running this trend in a year will reveal filings currently still working through the pipeline.
Set a filing alert in EurekaCommon questions about flexible barrier packaging patents
The dataset's assignee ranking covers 100 companies, with the leader holding 27 records and the top 5 combined accounting for 108 records, or 33.4% of all 323 records in scope. That leaves a long tail: most of the ranked entities hold only a handful of families each, so the field is moderately concentrated at the top rather than dominated by one player. A freedom-to-operate review should prioritise the leading names' specific claims before broadening to the tail.
Filing activity rose from a single record in 2017 to a peak of 16 in 2021, then fell to 3 by 2024, an 81% decline over that three-year span. Because publication typically lags filing by around 18 months, the 2025 and 2026 figures in any dataset are necessarily incomplete and cannot yet be read as a continuing decline. The safest complete comparison remains 2021 versus 2024, which does show a real pullback in new filings after the 2021 peak.
Almost all records (94.4% of 323) sit in IPC class B65D, covering containers and packaging generally, but the more informative split is within that: 42.7% of records carry a B32B laminate/layered-product claim versus 22.6% in B65B packaging and wrapping processes. Smaller adjacent classes — devices for body fluids, luggage and bags, paper compositions, spectacles, and baking/dough applications — each account for under 9% of records, marking specialised end-use branches rather than the field's core.
The IPC composition data shows several branches with real but thin activity: spectacles/lens packaging at 7.1%, baking/dough applications at 5.6%, and paper-based compositions at 7.4% of the 323 records. These are branches where barrier packaging technique has clearly been adapted to a niche use but has not attracted dense claim coverage, making them more promising starting points than the crowded B32B laminate core, where 42.7% of records already stake a position.
US20030031388A1, assigned to Milliken & Company, claims a flexible reusable packaging container built from a coated textile substrate, where the coating acts as a gas/liquid-impermeable barrier and can also carry antifungal or antibacterial agents. It is a specific material and layer-structure claim, not a claim over flexible barrier packaging generally, so it constrains textile-substrate-plus-stiffening-coating constructions rather than the whole field. Anyone designing a non-textile substrate or a different barrier mechanism would need a separate, claim-by-claim check rather than treating this record as a blocking patent for the category.
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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.