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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/high-barrier-film-fill-and-seal-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Packaging Technology · Patent LandscapeHigh-Barrier Film Fill and Seal Patents: Who Holds the Ground
- Filing activity has plateaued, not grown. Annual filings peaked at 65 in 2022 after 57 in 2017, and the trend since sits flat-to-declining — this is a maintained field, not an expanding one.
- Claim density concentrates in lamination, not machinery. B32B (layered products) touches 1,108 of 1,135 records, while B65B (packaging & wrapping proper) accounts for only 67 — the barrier film construction, not the fill-seal hardware, is where the crowding is.
- Co-filing is rare and lopsided. Only 10 co-assignee pairs exist across the dataset, and one pairing alone accounts for 19 joint filings — collaboration here is the exception, not the norm.
1,135
Published Records
32%
Top-5 Share of All Records
-5%
Filing Growth 2021→2024
EP
Leading Jurisdiction
Filing growth compares 2021 (43 records) with 2024 (41) — 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 1,135 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This dataset tracks patent families at the intersection of high-barrier film construction and fill-seal packaging processes — form-fill-seal lines, heat sealing, sealing layers, and the machinery that runs them, filed against barrier-film search terms and classified under B65B9, B65B51, and B32B27. Coverage runs from 2015 through the 2026 cut-off, with 1,135 published families forming the ranking base.
Because publication typically lags filing by around 18 months, the most recent one to two years in any trend line will understate real filing activity — treat the tail end of the chart as a floor, not a ceiling.
Filing activity, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The data
Filing trend and technology composition
Two views of the same 1,135-family dataset: how filing volume has moved year over year, and which IPC subclasses actually carry the claim weight.
A field holding its ground, not expanding
Filings rose from 57 in 2017 to a peak of 65 in 2022, then eased back toward the present. With 2022 sitting near the dataset midpoint, the shape reads as flat-to-declining rather than growth — consistent with a technology where the core barrier-film constructions are largely staked out and new filings are incremental refinements rather than new territory.
Lamination science dominates; fill-seal hardware is a minority share
B32B (layered products and laminates) appears in 1,108 of 1,135 records — essentially the whole dataset — while B65D (containers) and C08J (polymer processing) trail well behind, and B65B (packaging and wrapping machinery itself) accounts for just 67. The claim pressure sits in how the barrier film is built and coated, not in the mechanics of forming, filling, and sealing the pack.
Shares are the percentage of the 1,135 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
Go deeper on High-Barrier Film Fill and Seal with Eureka
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The records other filings build on
Representative filing
Medical gas barrier film and medical bag using the same
OTSUKA PHARMACEUTICAL FACTORY, INC.
A multilayer gas barrier film combining a deposition-oriented polyester layer carrying an inorganic-oxide deposited layer, an oriented polyamide layer adhered to that deposited surface, and a polyethylene layer adhered to the opposite face — built to hold gas and vapor barrier performance through heat sterilization without adhesive ingredients eluting into medical contents.Filed by Otsuka Pharmaceutical Factory, Inc.; granted 2011-03-29. Representative of the medical-bag branch of this landscape rather than the leading edge of it.
Most-cited records in this dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20120003500A1 | Process for producing multilayered gas-barrier film | 542 |
| 2 | US5059481A | Biaxially stretched, heat shrinkable VLDPE film | 337 |
| 3 | US4254169A | Multi-layer barrier film | 320 |
| 4 | US4963419A | Multilayer film having improved heat sealing characteristics | 251 |
| 5 | US5346735A | Peelable barrier film for vacuum skin packages and the like | 188 |
| 6 | US4863769A | Puncture resistant, heat-shrinkable films containing very low density polyethylene | 181 |
| 7 | US5792550A | Barrier film having high colorless transparency and method | 175 |
| 8 | US20060046006A1 | Multilayer polymeric barrier film, flexible packaging made therewith, and methods | 169 |
| 9 | US20070264520A1 | Articles having a polymer grafted cyclodextrin | 168 |
| 10 | US20110132449A1 | Multilayer film for encapsulating oxygen and/or moisture sensitive electronic devices | 164 |
Citation counts reward older filings simply by virtue of longer exposure — read this table as a map of technical influence, not a ranking of current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers say about this field
Four figures from the dataset that matter more for filing strategy than raw counts do.
Filing trajectory
65 (2022) vs 57 (2017)
peak vs early-window filings
Growth has stalled, not accelerated
The peak year, 2022, sits near the midpoint of the coverage window rather than at its end. A field that peaks mid-window and eases off afterward is one where the dominant constructions have already been claimed and later filings are defensive or incremental.
Filing trend, 2017-2026
Claim geography
1,108 of 1,135 records
touch B32B
Barrier film construction, not fill-seal machinery, is where the density lives
B65B — the subclass most directly about packaging and wrapping machinery — covers only 67 records. Anyone targeting the actual forming, filling and sealing hardware is working in comparatively open territory next to the laminate-construction crowding.
IPC composition
Filing geography
EPO 288 · US 279
leading receiving offices
Europe and the US carry the bulk of filings, China and Canada trail
With WIPO PCT filings at 89 and China at 85, the dataset shows filing strategy still centered on European and US protection first, with multi-jurisdiction PCT routes used selectively rather than as a default.
Receiving office distribution
Collaboration pattern
10 co-assignee pairs
across 1,135 families
Co-filing is the exception
Only one pairing reaches double-digit joint filings; the rest sit at single-digit counts. Most assignees in this space file solo, which makes freedom-to-operate analysis more tractable — fewer joint-ownership entanglements to trace.
Co-assignee network
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to high-barrier film fill and seal, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is active, and where momentum has cooled
Recent-year filing momentum is muted across the board — a pattern consistent with the flat-to-declining trend seen dataset-wide, and worth reading alongside each assignee's historical volume rather than in isolation.
Momentum
0% YoY
latest-year change
Toppan Holdings and Amcor Flexibles North America hold flat
Both show 2 filings in the latest year with 0% year-over-year change — steady maintenance filing rather than acceleration or retreat.
Recent-year momentum
Momentum
-100% YoY
Cryovac
Cryovac's filing has gone quiet in the latest year
A drop to zero filings in the most recent year doesn't necessarily signal exit — given the ~18-month publication lag, it may simply mean recent applications haven't published yet.
Recent-year momentum
Collaboration
19 joint filings
strongest co-assignee pair
One partnership dominates joint filing
The Unifrax I LLC / Lamart Corporation pairing accounts for the large majority of co-assignee activity in this dataset — most other organizations here file independently.
Co-assignee pairs
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Toppan Holdings Inc. | 2 | 0% |
| Amcor Flexibles North America, Inc. | 2 | 0% |
| Cryovac, Inc. | 0 | -100% |
| Tetra Laval Holdings & Finance S.A. (Switzerland) | 0 | — |
| W.R. Grace & Co. | 0 | — |
| The Dow Chemical Company | 0 | — |
| Hollister Incorporated | 0 | — |
| Unifrax I LLC | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this analysis
The dataset points to specific next steps depending on whether you're clearing a filing, tracking a competitor, or scoping new claim territory.
Run a freedom-to-operate check against the cited core
Start from the most-cited records in this dataset — they define the technical baseline that later filings build on and are the most likely source of blocking claims.
Explore in Eureka →Track momentum shifts, not just leaderboard position
Year-over-year filing change tells you who is still investing and who has gone quiet — pair it with publication lag before drawing conclusions about the latest year.
Explore in Eureka →Scope claims in the under-claimed sub-areas
Fill-seal machinery for high-barrier stock and mono-material recyclable laminates both show filing activity without the density seen in core barrier constructions.
Explore in Eureka →Source: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about this landscape
The dataset shows filing activity concentrated among a group of packaging and materials companies, with the top of the ranking holding a clear lead over a long tail of occasional filers. Recent-year momentum among the most active assignees is largely flat, with year-over-year change sitting at or near 0% for several of the more consistent filers. Because co-filing is rare in this space — only 10 co-assignee pairs across 1,135 families — most leading assignees are building their portfolios independently rather than through joint ventures.
Not currently. Filings rose from 57 in 2017 to a peak of 65 in 2022, but the trend since has eased rather than continued upward, and the peak sitting near the middle of the 2015-2026 window points to a field that is mature rather than expanding. Given the roughly 18-month lag between filing and publication, the last one to two years in the trend will always look lower than the eventual final count, so some caution is warranted before calling the decline final. Overall, though, this reads as a technology holding its filing pace rather than accelerating it.
B32B, the IPC subclass covering layered products and laminates, appears in 1,108 of the 1,135 records in this dataset — effectively the entire corpus. Supporting subclasses like B65D (containers), C08J (polymer processing) and C08L (polymer compositions) trail well behind, and B65B, the subclass most directly tied to packaging and wrapping machinery, covers only 67 records. This means the bulk of claim activity is about how the barrier film itself is constructed and coated, not about the fill-seal machinery that processes it.
The clearest gap sits in fill-seal machinery designed specifically for high-barrier film stock — B65B's 67 records are a small fraction of the 1,108 B32B records, meaning the hardware side of the process is comparatively under-claimed relative to the film construction side. Sub-areas like recyclable mono-material barrier laminates and peelable seal layers for skin and vacuum packs also show activity without the density seen in the core multilayer barrier constructions. Any first claim in these areas should be checked against the most-cited foundational patents before assuming the space is genuinely open.
US7914867B2 covers a multilayer gas barrier film for medical bags, combining a deposition-oriented polyester layer with an inorganic-oxide deposited layer, an oriented polyamide layer, and a polyethylene layer, designed to survive heat sterilization without adhesive elution. It is a representative record in this landscape rather than the single most-cited one, so its blocking effect is narrower than the top-cited patents in the table — it constrains that specific medical-bag layer sequence and material combination rather than barrier film construction broadly. Anyone designing a similar medical or sterilization-grade barrier laminate should review its claims directly rather than relying on the abstract alone.
Answers are grounded in the same dataset. Derived from a Patsnap search on High-Barrier Film Fill and Seal covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.