Polymers & Composites Patents: Top Companies & Filing Trends 2026
- 8.0% concentration at the top. The five leading assignees together hold 19,472 of the 242,100 records in scope — a leader position, but not a chokehold on the field.
- Filing has cooled from its 2019 peak. Filings ran from 949 in 2017 to a peak of 951 in 2019, then fell from 867 in 2021 to 553 in 2024, a 36% drop over that span — read the last year or two as still filling in, not as the real trend.
- Shaping and processing dominate the IPC mix. B29C (shaping of plastics) leads at 1.8% of records, with C08J, B32B, C08L and C08K each close behind — additive and medical-adjacent classes trail well below 1%.
Filing growth compares 2021 (867 records) with 2024 (553) — 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 242,100 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset spans 242,100 published records filed between 2015 and mid-2026, drawn from a search string built around polymer and composite materials — resins, thermoplastics, elastomers, fibre-reinforced composites, polymer processing, biodegradable polymers, polymer membranes and high-performance polymers. It captures both structural and functional claims: how a material is shaped or layered, what it is made of, and increasingly, where it ends up — implants, sterilisation, drug delivery. The most-cited records in this set skew toward medical device applications, a reminder that citation counts favour older filings and older application areas rather than what is currently most active.
Filing activity is distributed across receiving offices with the United States taking the largest single share, followed by the European Patent Office and WIPO's PCT route, with Canada, Australia and the United Kingdom some way behind. That spread points to a field where protection is sought broadly rather than concentrated in one jurisdiction, which matters for anyone mapping freedom-to-operate across markets rather than a single home territory.
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Filing trend and technology composition
Two views of the same 242,100-record set: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filing trend, 2017–2026
Filings rose to a peak of 951 in 2019, then declined — 867 in 2021 down to 553 in 2024, a 36% fall over that three-year window. 2025 and 2026 figures are partial: publication lags filing by roughly 18 months, so the most recent one to two years will fill in as more records publish.
IPC subclass composition
B29C (shaping of plastics) leads at 1.8% of the 242,100 records, with C08J (polymer processing and solutions), B32B (layered products and laminates), C08L (polymer compositions) and C08K (additives) each in the 1.3–1.5% range. Medical-adjacent classes — A61L, A61F, A61K — sit below 1%, showing where polymer claims cross into device and pharmaceutical territory without yet carrying the bulk of filing volume. Because records can carry multiple classes, these shares add to more than the record total and should not be summed.
Shares are the percentage of the 242,100 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Polymers & Composites Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about polymers & composites patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative claim in this space
Biodegradable polymer composite material (US20130310506A1)
The present invention relates to a biodegradable polymer composite material, and more particularly, to a technique for providing a polymer composite material comprising an acrylonitrile-butadiene-styrene (ABS) resin and a biodegradable resin, wherein said polymer composite material has superior impact resistance.Filed by LG Hausys; illustrates how blended-resin claims combine a conventional engineering plastic with a biodegradable component to hold mechanical performance while adding end-of-life properties.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6596296B1 | Drug releasing biodegradable fiber implant | 1,903 |
| 2 | US6082025A | Flexible membranes | 1,655 |
| 3 | US6127026A | Flexible membranes | 1,572 |
| 4 | US20070010702A1 | Medical device with low magnetic susceptibility | 1,511 |
| 5 | US4720415A | Composite elastomeric material and process for making the same | 1,450 |
| 6 | US6335029B1 | Polymeric coatings for controlled delivery of active agents | 1,065 |
| 7 | US20020082543A1 | Microneedle devices and production thereof | 1,063 |
| 8 | US6039975A | Colon targeted delivery system | 1,039 |
| 9 | US20140061974A1 | Method and apparatus for continuous composite three-dimensional printing | 926 |
| 10 | US20030012805A1 | Implant for cartilage tissue regeneration | 919 |
Citation counts reflect an older, medical-device-heavy segment of the corpus and are a signal of influence within this search, not of current filing priority.
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Three read-throughs from the concentration, trend and citation figures above.
Leadership without lock-up
The top 5 assignees combined hold 19,472 records, 8.0% of all 242,100 in scope. That is a real leader position — the top 10 add up to 12.0% — but it leaves the large majority of filing spread across a long tail, which means most sub-branches of this field are not owned by any single player.
Past the 2019 peak
Filing peaked at 951 records in 2019 and has since eased, with the complete-year figures showing 867 in 2021 down to 553 in 2024. Treat 2025 and 2026 counts as undercounts still filling in through the publication lag, not evidence of a further drop.
Older medical filings dominate citation counts
The most-cited records in this corpus are biodegradable fibre implants and flexible membrane patents from the late 1990s and early 2000s. That reflects how long these documents have had to accumulate citations, not that implant chemistry is where current filing activity concentrates.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to polymers & composites patent landscape, with the prior art for and against each one.
Assignee landscape and where activity is moving
The ranked list covers 100 companies by record count. Momentum figures below are year-over-year at the level of individual assignees, and swing sharply on small bases.
A clear but not dominant leader
The top-ranked assignee holds 4,748 records, well ahead of fifth place at 2,530 and tenth place at 1,630. The gap between first and fifth suggests one or two firms have built a durable filing programme, while positions six through ten are more closely bunched.
Small-base swings dominate recent momentum
Year-over-year swings among named assignees in the most recent year are large in percentage terms but small in absolute count — a jump from one or two filings to several reads as several hundred percent. Several established filers show flat or negative momentum in the same window, consistent with the field-wide slowdown after 2019.
Co-filing clusters around a small number of corporate families
Only 10 co-assignee pairs appear in this dataset, and the strongest link connects two related entities within the same corporate group. Cross-company co-filing is rare here, which points to in-house R&D and internal joint ventures rather than external partnership as the dominant model.
| Assignee | Recent year | YoY |
|---|---|---|
| General Electric | 6 | +500% |
| The Boeing Company | 1 | -92% |
| W. L. Gore & Associates | 0 | — |
| Toray Industries | 0 | -100% |
| 3M Innovative Properties Co. | 0 | — |
| LG Chem | 0 | — |
| Tendera Synthetics Ltd. | 0 | -100% |
| Dow Global Technologies LLC | 0 | — |
Where to take this from here
The figures above establish the shape of the field. Turning that into a filing or freedom-to-operate decision means going record by record.
Check claim scope before filing near the leaders
The top 5 assignees hold 8.0% of all records — enough to justify a close read of their independent claims in B29C and C08L before drafting anything adjacent.
Explore claim scope in EurekaTrack the branches with thin IPC density
Classes below 1% of records, like A61K and A61F crossovers, carry less claim density than the core shaping and additive classes — worth a deeper look before assuming the space is occupied.
Run a white-space search in EurekaCommon questions about this landscape
The ranked list in this dataset covers 100 assignees by record count, with the leading company holding 4,748 records against 242,100 total. The top 5 combined account for 8.0% of all records and the top 10 for 12.0%, which is a real but not overwhelming concentration. Most of the field sits outside that ranked leadership group, spread across a long tail of smaller filers, so checking the specific assignee active in your sub-branch matters more than assuming one of the top names controls it.
Filing peaked at 951 records in 2019 and has declined on complete-year figures since, falling from 867 in 2021 to 553 in 2024, a 36% drop over that span. The 2025 and 2026 figures in this dataset are not yet reliable indicators of a further decline, because publication typically lags filing by around 18 months and those years are still filling in. Read the trend as a cooling from a 2019 peak rather than a currently accelerating slowdown.
B29C, covering the shaping of plastics, carries the largest share at 1.8% of the 242,100 records in scope, followed closely by C08J (polymer processing and solutions), B32B (layered products and laminates), C08L (polymer compositions) and C08K (additives). Medical-adjacent classes such as A61L, A61F and A61K sit below 1% each, marking a smaller but distinct overlap between polymer chemistry and device or pharmaceutical applications. Because a single record can carry several IPC classes, these percentages do not sum to 100% and should be read individually against the full record total.
The thinner IPC classes relative to the core shaping and additive group point to under-claimed territory, particularly where biodegradable polymer chemistry overlaps with membrane or laminate structures rather than standalone resin claims. Co-assignee data also shows only 10 identified pairings in the whole dataset, meaning cross-company collaborative filing is rare, which itself is a gap for anyone structuring a joint development claim. A first move is to search the specific combination of shaping method and additive or biodegradable component you plan to claim, rather than relying on the aggregate class shares alone.
The most-cited records in this corpus, including a biodegradable fibre implant patent cited 1,903 times, date from the late 1990s and early 2000s and reflect decades of accumulated citations rather than current filing priority. Citation counts inside any searched corpus systematically favour older documents simply because they have had longer to be cited. Use citation rank to identify influential prior art to search around, not as a signal of which technical routes are most active today.
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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.