Barrier Coatings for Paper Packaging Patents: Leaders & White Space 2026
Barrier Coatings for Paper Packaging Patents: Who Leads and Where the Field Is Still Open
Filing activity peaked in 2023 at 169 records and the 2021-to-2024 span shows an 18% pullback, though 2025-2026 counts are still filling in as publication catches up with filing. Annual filings rose from 51 in 2017 to a peak of 169 in 2023. The 2021-to-2024 window shows a documented -18% move (152 to 124); years after 2024 are still incomplete because publication typically lags filing by around 18 months, so the apparent tail-off in 2025-2026 understates real activity rather than confirming a slowdown.
- 1STORA ENSO OYJ12.4%
- 2KEMIRA OY7.0%
- 3TOPPAN HOLDINGS INC4.0%
- 4CURWOOD INC3.7%
- 5DAI NIPPON PRINTING CO LTD3.6%
See the full barrier coatings for paper packaging analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions on this landscape
Who holds the most patents in barrier coatings for paper packaging?
One assignee leads clearly with 193 records in this dataset, well ahead of the fifth-ranked filer at 56. The top 5 assignees together account for 30.6% of all 1,560 records in scope, and the top 10 reach 45.4%, so filing is concentrated at the front but far from monopolised — a long tail of smaller filers accounts for the rest. Anyone assessing competitive position should look at both the leader’s portfolio and the shape of that tail, since a crowded top does not mean the whole field is closed.
Is patent filing in barrier coatings for paper packaging growing or slowing?
Filings rose for years and peaked at 169 in 2023, then the documented 2021-to-2024 window shows a -18% move, from 152 down to 124. Numbers for 2025 and 2026 appear lower still, but publication typically lags actual filing by around 18 months, so those recent years are not yet a reliable read on real activity. Treat 2024 as the most recent complete year and expect the true 2025-2026 counts to revise upward as more records publish.
What technology areas dominate the patent claims in this field?
Layered-product and laminate claims under IPC class B32B appear on 54.9% of the 1,560 records, making them the single most claimed technology area, followed by pulp and paper composition claims (D21H) at 39.9% and packaging/container claims (B65D) at 33.8%. Coating-specific chemistry under C09D sits much lower, at 11.9%. Because records often carry multiple IPC codes, these figures describe claim density across the field rather than a clean split of where all the filing sits.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Barrier Coatings for Paper Packaging covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.