Paper-Based Packaging Patents: Leaders, Trends & White Space 2026
- Filings peaked in 2017 at 16 and have declined toward zero since, with the 2022 midpoint at just a single record — a mature, largely settled filing pattern rather than an emerging one.
- Pulp-and-paper composition claims (D21H) dominate at 33 of 40 records, while mechanical conversion branches like particle board and paper working hold three records or fewer each.
- The most-cited prior art clusters around compostable, grease-and-moisture-resistant paperboard, with a 2024 filing from Amcor Flexibles North America extending the field into light-blocking layer architectures.
How the paper-based packaging patent field has developed
Patent filing in paper-based, paperboard and fibre-based packaging traces a field that moved fast early and has since gone quiet. Filings peaked at 16 in 2017 and dropped toward zero within a few years, a pattern that looks like a technology that reached a claiming plateau rather than one still building momentum. The dataset’s most-cited records are compostable, grease-and-moisture-resistant paperboard filings from the mid-2010s, and they remain the reference point that later filings, including a 2024 light-blocking film filing, build against.
The forty tracked families sit overwhelmingly in pulp-and-paper composition claims, with containers and laminate structures as the next largest groups. Mechanical conversion and forming steps — turning compostable board into finished packaging — carry far fewer claims, which is where a reader deciding where to file next should look first.
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Filing trends and technology composition
Forty published families trace a field that peaked early and has cooled since, concentrated overwhelmingly in pulp-and-paper composition claims with a secondary cluster in container and laminate structures.
Filing activity, 2017-2026
Filings peaked at 16 in 2017 and fell to a single record by the 2022 midpoint; the most recent years show near-zero counts, though the last one to two years are understated because publication typically lags filing by around 18 months.
Technology composition by IPC subclass
D21H (pulp and paper compositions) accounts for 33 of the 40 records, with B65D (containers and packaging) and B32B (layered products and laminates) as the next-largest groups; the remaining subclasses — particle board, plastics shaping and preparation, box making and paper mechanical working — each hold three records or fewer.
Shares are the percentage of the 40 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Paper-Based Packaging Sustainable Packaging with Eureka
This page is one run against one query. Ask Eureka your own question about paper-based packaging sustainable packaging and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative and most-cited filings
Paper packaging with printed light-blocking layers
A paper-based packaging film includes a paper component, a polymeric film, a first blocking layer comprising metallic flakes and a first coalescent polymer, and a second blocking layer comprising a white pigment and a second coalescent polymer. The first blocking layer sits between the second blocking layer and the paper component, and the second blocking layer sits between the first blocking layer and the polymeric film. The first blocking layer comprises about 25% to about 50% by weight of the metallic flakes, and the total film composition comprises 80% or more by weight of the paper component.Filed by Amcor Flexibles North America, published December 2024 — the most recent substantive filing in this dataset.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20170002517A1 | Printable compostable paperboard | 24 |
| 2 | WO2018031388A1 | Oil, grease, and moisture resistant paperboard | 22 |
| 3 | US20170328005A1 | Printable compostable paperboard | 16 |
| 4 | US20160340833A1 | Compostable paperboard with oil, grease, and moisture resistance | 14 |
| 5 | US9670621B2 | Compostable paperboard with oil, grease, and moisture resistance | 12 |
| 6 | US20180327976A1 | Biopolymer coating for compostable paperboard packaging | 7 |
| 7 | WO2017091392A1 | Biopolymer coating for compostable paperboard packaging | 7 |
| 8 | US9863094B2 | Printable compostable paperboard | 7 |
| 9 | US20200109517A1 | Oil and grease resistant paperboard | 6 |
| 10 | US9920485B2 | Printable compostable paperboard | 6 |
Citation counts reflect influence within this searched corpus and favour older filings; they are not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the citation and filing pattern signals
Reading citation weight alongside filing recency separates the claims that still anchor the field from the areas that have gone quiet.
Compostable paperboard sets the reference point
US20170002517A1's printable compostable paperboard claim carries the highest citation count in the set, with three related compostable-paperboard filings close behind. Citation weight inside a searched corpus favours older records, so this signals foundational influence rather than current filing activity.
Activity has not recovered since the 2017 peak
The midpoint year of 2022 recorded just one filing, and recent years sit near zero. Because publication trails filing by around 18 months, the very latest year is always undercounted, but the multi-year decline predates that lag effect.
Composition claims dwarf conversion-process claims
Pulp and paper composition (D21H) holds 33 of 40 records; particle/fibre board (B27N) holds just 3. That imbalance is a filing-strategy signal — the chemistry has been claimed far more heavily than the forming and conversion steps around it.
US and EPO carry most of the record set
The United States receives 15 of the tracked filings, with Europe (EPO) at 7 and WIPO PCT filings at 5. Germany, Norway and Sweden each show smaller counts, indicating a US- and Europe-centred filing footprint rather than a globally distributed one.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to paper-based packaging sustainable packaging, with the prior art for and against each one.
Who is filing, and where activity has stalled
Recent-year momentum data shows the tracked assignees recording zero filings in the latest year, consistent with the dataset's broader decline from its 2017 peak — this is a field where the incumbent claim positions are largely set rather than actively contested.
Filing activity has gone flat across the board
Every assignee with recent-year momentum data recorded zero filings in the latest tracked year, including a -100% year-over-year drop for one. This is consistent with the overall trend decline rather than an isolated pullback by one company.
Early compostable-paperboard filings still lead on influence
The highest-cited records in the dataset are compostable-paperboard filings from the mid-2010s. Citation counts favour older filings within a searched corpus, so this reflects historical influence on later filers more than current competitive activity.
Amcor Flexibles North America extends the field into light-blocking layers
The most recent substantive filing in the dataset moves beyond compostability claims into a two-layer light-blocking architecture with specific compositional thresholds, suggesting new filing activity is shifting toward functional layer engineering rather than base material chemistry.
| Assignee | Recent year | YoY |
|---|---|---|
| WestRock MWV, LLC | 0 | — |
| Amcor Flexibles North America, Inc. | 0 | — |
| Stora Enso Oyj | 0 | -100% |
| Constantia Pirk GmbH & Co. KG | 0 | — |
Where to take this next
The filing pattern here — an early peak, dense composition claims, and thin conversion-process coverage — points to specific next checks before committing R&D or filing budget.
Run a freedom-to-operate check against the compostable-paperboard cluster
The most-cited records in this dataset carry compositional and process claims that later filings, including the 2024 light-blocking film, still build against. Any new formulation work should be checked against these claims specifically before development proceeds.
Run an FTO search in EurekaMap the mechanical conversion branches in detail
Particle/fibre board, plastics shaping and paper mechanical working each hold three or fewer of the 40 tracked records. A closer read of these branches would confirm whether the white space is genuinely open or simply under-searched.
Explore IPC branches in EurekaTrack whether recent-year momentum recovers
Every assignee with momentum data shows zero filings in the latest year, but publication lag means the most recent one to two years are always undercounted. Re-checking this trend in a future data pull would confirm whether the decline is real or an artefact of lag.
Set a filing alert in EurekaFrequently asked questions
The most-cited records in this dataset are compostable-paperboard filings describing oil, grease and moisture resistance combined with printability, filed as US applications and a related WIPO PCT filing. A more recent 2024 filing from Amcor Flexibles North America covers a light-blocking paper film architecture. Filing activity overall is concentrated among a small number of assignees, several of whom show no new filings in the most recent tracked year, which suggests the core composition claims from the mid-2010s still anchor the field rather than being displaced by newer entrants.
No — filings peaked at 16 in 2017 and had fallen to a single record by 2022, with near-zero counts in the years since. That decline should be read carefully: publication lags filing by roughly 18 months, so the most recent one to two years understate true filing activity. Even accounting for that lag, the trend across the tracked period is flat to declining rather than growing.
Pulp and paper composition claims (IPC D21H) dominate, appearing in 33 of the 40 records, followed by container and packaging structure claims (B65D, 18 records) and layered-laminate claims (B32B, 13 records). Particle/fibre board, plastics shaping, plastics preparation, box-making and paper mechanical working each account for three or fewer records, marking them as comparatively open branches relative to the composition-heavy core.
The thinnest IPC branches — particle/fibre board, plastics preparation and paper mechanical working — each carry only three of the 40 records, despite sitting adjacent to the heavily claimed composition and laminate work. That gap points to under-claimed opportunity in mechanical conversion and forming processes for compostable or mono-material substrates, rather than in further composition claims, where prior art is already dense.
WO2024258401A1, filed by Amcor Flexibles North America and published in December 2024, claims a paper-based packaging film with a paper component, a polymeric film, and two ordered blocking layers — one containing 25% to 50% by weight metallic flakes, the other a white pigment layer — where the paper component makes up 80% or more of the total film by weight. It blocks designs matching that specific layer order and those compositional thresholds, but does not reach films with a lower paper share, a different layer order, or a non-metallic-flake blocking mechanism.
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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.