High-Barrier Film Safety and Compliance Patent Landscape 2026
- Flat filing curve, not a growing one. activity peaked at 4 families in 2022 and the midpoint check shows no sustained climb since — this is a mature, occupied claim space rather than an emerging one.
- One laminate family carries almost all the citation weight. US20070264520A1's cyclodextrin-grafted article sits at 168 citations, more than five times the next most-cited record, so downstream drafting still orbits that filing.
- Filing is US/EPO-led with a thin PCT footprint. nine records route through the USPTO and seven through the EPO, against only three PCT filings — most applicants are protecting core markets directly rather than building broad international options.
Filing growth compares 2021 (1 records) with 2024 (3) — 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 24 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This review tracks patent families at the intersection of high-barrier film construction and food-contact compliance — migration testing, food safety and regulatory clearance — across filings from 2015 through the 2026 cut-off. The search combines barrier-film terminology with compliance-specific language and narrows to the IPC classes covering layered laminates, container packaging and analytical testing methods, so general barrier-film chemistry that never touches a compliance claim is excluded.
Coverage runs to a 2026-07-31 data cut-off. Publication typically lags filing by around 18 months, so the last one to two years of the trend will read lower than the true filing volume once outstanding applications publish.
Filing trend and technology composition
Twenty-four patent families make up this landscape. The trend line and the IPC mix below show where the compliance-specific barrier-film art actually sits, rather than where barrier-film R&D sits in general.
A flat decade, not a rising one
Filings opened at 2 in 2017, rose to a peak of 4 in 2022, and the 2022 midpoint check confirms the curve is flat-to-declining rather than climbing. Treat the final one to two years as undercounted because of publication lag, but even generously adjusted this is not a growth curve.
B32B dominates; testing classes barely register
B32B (layered products and laminates) appears in 23 of 24 records — almost every filing in this set is fundamentally a laminate-construction claim. B65D (containers) follows at 11, C08J (polymer processing) at 5, and B65B (packaging/wrapping) at 4. The analytical and food-safety classes — A23L, C23C, C08B, C08L — each register at 1–2 records, which tells you compliance testing itself is rarely the subject of the claim; it is almost always the laminate structure that gets patented, with compliance framed as a property or use-case.
Shares are the percentage of the 24 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on High-Barrier Film Safety and Compliance with Eureka
This page is one run against one query. Ask Eureka your own question about high-barrier film safety and compliance and every answer comes back with the patent numbers behind it.
Try EurekaThe records shaping this space
WO2025000075A1 — Transparent dual transmission resistant high barrier film and packaging laminate
The filing describes a transparent, dual-protection high-barrier film combining a first ethylene-based synthetic resin layer, an oxygen barrier layer, a second synthetic resin layer, and tie layers between them, aimed at blocking both moisture and oxygen transmission in a packaging laminate.Filed by Flair Flexible Packaging Corp., published January 2025 — one of the most recent records in this landscape and a useful marker of where current claim drafting is heading.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070264520A1 | Articles having a polymer grafted cyclodextrin | 168 |
| 2 | US20070224402A1 | Gas-Barrier Laminate | 32 |
| 3 | EP1728622A1 | Laminates with gas-barrier property | 12 |
| 4 | US7910213B2 | Gas-barrier laminate | 9 |
| 5 | EP2881250A1 | Mineral oil barrier film with high oxygen diffusion properties | 5 |
| 6 | US20170156379A1 | Plasma sterilization film and plasma sterilization wrapping container | 3 |
| 7 | US9737091B2 | Plasma sterilization film and plasma sterilization wrapping container | 2 |
| 8 | EP3368299B1 | Laminated barrier film and edge-covering strip for packaging | 2 |
| 9 | EP3368299A1 | Laminated barrier film and edge-covering strip for packaging | 1 |
| 10 | WO2017072121A1 | Laminated barrier film and edge-covering strip for packaging | 1 |
Citation counts are drawn from within this searched corpus and skew toward older filings that have had more time to accumulate citations — read them as a signal of influence on later drafting, not as a ranking of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns matter more than the raw counts: where claim density sits, who the citation record points to, and how thin the international filing footprint really is.
Laminate construction, not testing method, is the claimed subject
Only a handful of records sit in the analytical or food-safety IPC classes. Compliance is overwhelmingly claimed as a property of a layered structure rather than as a test method or protocol, so freedom-to-operate work should focus on layer architecture, not assay claims.
One 2007-era family still anchors the field
US20070264520A1's cyclodextrin-grafted article is cited more than five times as often as the next record. New filings in gas-barrier laminates are still being drafted around, or distinguished from, that art.
Direct national filing outweighs PCT strategy
The US and EPO together account for the bulk of receiving-office activity, while PCT filings sit at just 3. Applicants appear to be defending core commercial markets directly rather than keeping broad international options open through the PCT route.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to high-barrier film safety and compliance, with the prior art for and against each one.
Who holds the ground, and where it is open
The assignee list is short — 24 families total — and recent-year momentum has gone quiet across the named parties, with 0 filings in the latest year for each of the leading assignees tracked. That combination, dense IPC coverage plus stalled recent activity, is what makes some sub-areas worth a second look.
Tetra Laval and Amcor hold legacy laminate ground
Both groups appear among the tracked assignees with no filings in the most recent year captured. Their existing families still define much of the B32B laminate baseline that later filers have to design around or license against.
Mitsubishi Plastics and Plastic Co. sit inside the dominant IPC class
With B32B covering almost every record in this landscape, these assignees' laminate-construction filings sit squarely in the most contested claim territory rather than at its edges.
A long tail of single-filing entrants
Beyond the handful of assignees with multiple families, most of the remaining names — including several regional packaging and food-processing firms — appear with a single filing each, consistent with a field where claim space is occupied but no single party is filing aggressively right now.
| Assignee | Recent year | YoY |
|---|---|---|
| Tetra Laval Holdings & Finance S.A. (Switzerland) | 0 | — |
| Amcor Flexibles North America, Inc. | 0 | — |
| Mitsubishi Plastics, Inc. | 0 | — |
| Plus Co., Ltd. | 0 | — |
| Quanzhou Duowei Food Co., Ltd. | 0 | — |
| Flair Flexible Packaging Corp. | 0 | — |
| Guangdong Jinjia New Material Technology Co., Ltd. | 0 | — |
| Celplast Metallized Products Limited | 0 | — |
Where to take this
The dataset points to a mature, flat filing curve with concentrated citation weight and a thin recent pipeline — the next steps depend on whether you are clearing a product or scouting a gap.
Run a freedom-to-operate check against the B32B core
With 23 of 24 records touching layered-laminate claims, any new barrier-film product should be checked against that class first, not against the smaller testing-method classes.
Explore laminate claims in EurekaWatch the citation anchor for continuation activity
US20070264520A1's outsized citation count makes it worth monitoring for continuations, oppositions or licensing moves that could shift how later laminate claims are drafted.
Track this filing in EurekaScope the under-claimed sub-areas before drafting
Bio-based barrier coatings and surface-deposited coatings both sit at 1-2 records — worth a targeted search before assuming the space is clear.
Search white space in EurekaCommon questions on this landscape
This landscape identifies 24 patent families filed between 2015 and the 2026 data cut-off, using a search that combines high-barrier film terminology with food-contact compliance language. Families, rather than raw document counts, are used because they neutralise duplicate filings across jurisdictions and continuation applications from the same invention. The number is modest for a packaging sub-field, which is consistent with compliance-specific barrier claims being a narrow slice of the broader barrier-film literature.
No — the trend is flat to declining. Filings started at 2 in 2017, rose to a peak of 4 in 2022, and the midpoint check at 2022 confirms there is no sustained upward trajectory since. Because publication lags filing by roughly 18 months, the final one or two years in any dataset like this will understate true activity, but even with that adjustment the shape is not a growth curve.
B32B, the classification for layered products and laminates, appears in 23 of the 24 records in this landscape — essentially the entire dataset. B65D (containers and packaging) is the next most common at 11 records, followed by C08J (polymer processing) at 5. Classes specific to testing or food safety, such as A23L and C08B, each register only 1-2 records, showing that compliance is usually claimed as a laminate property rather than as a test method.
US20070264520A1, covering articles with a polymer-grafted cyclodextrin, is the most-cited record in this landscape at 168 citations — more than five times the next most-cited filing. That citation weight means a large share of later gas-barrier laminate art has been drafted with reference to, or in distinction from, this filing. Anyone drafting new barrier-laminate claims in this space should expect examiners or competitors to cite it during prosecution or opposition.
The clearest gaps sit outside the dominant B32B laminate class: bio-based polysaccharide barrier coatings (C08B), surface-deposited gas-barrier coatings (C23C), and mineral-oil migration barrier layers each have only 1-2 records in this dataset. Recent-year momentum across the leading assignees has also dropped to 0 filings in the latest year tracked, suggesting incumbents are not actively defending new ground right now. That combination — thin coverage plus quiet incumbents — is where a well-drafted first claim has the best chance of standing without immediately colliding with existing art.
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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.