PEEK Composite Patents: Leaders, Trends & White Space 2026
- China dominates the filing base. 64 of 82 records were filed at the Chinese receiving office, versus single digits everywhere else, so freedom-to-operate work outside China rests on a thin evidence base.
- Filing peaked in 2020, then went quiet. Activity hit 17 records in 2020, dropped to zero at the 2022 midpoint, and is now climbing again toward 7 in 2026 — a stop-start pattern rather than steady growth.
- Additive and blend claims outweigh processing claims. C08K (additives) and C08L (polymer compositions) each cover the large majority of records, while B29C shaping claims trail well behind — composition space is far more contested than process space.
What this patent set covers
Polyetheretherketone (PEEK) composite reinforcement patents cover how fillers, fibers and additives are compounded into the PEEK matrix, and how that matrix is shaped into finished parts. The corpus analysed here spans 82 patent families published between 2015 and mid-2026, filtered to records whose title, abstract or claims name carbon-fiber reinforced PEEK, PEEK composites, continuous-fiber PEEK or PEEK matrix composites, and classified under the core additive, polymer-composition and plastics-shaping IPC codes.
Because publication lags filing by roughly 18 months, the 2025-2026 figures in any trend line understate real filing activity; treat the most recent one to two years as a floor, not a ceiling.
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Filing trend and technology composition
Two views of the same 82-family dataset: how filing activity has moved year over year, and which IPC subclasses carry the claim weight.
An accelerating but uneven filing curve
Filings rose from 3 in 2017 to a peak of 17 in 2020, then fell away sharply enough to register zero at the 2022 midpoint before recovering to 7 by 2026. That is not a smooth growth curve; it looks like a wave of early filings around one or two applicants, a lull, and a fresh entrant cohort building since 2023.
Composition and additive claims lead shaping claims
C08K (additives) appears in 70 of 82 records and C08L (polymer compositions) in 68, making formulation — filler type, loading, coupling chemistry — the densest claim territory. B29C (shaping of plastics) covers 28 records and C08J (polymer processing) 23, both well behind formulation. D06M (textile treatment) and H01B (cables/conductors) sit at only 6 records each, marking them as comparatively open niches rather than core battlegrounds.
Shares are the percentage of the 82 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Polyetheretherketone Composite Reinforcement with Eureka
This page is one run against one query. Ask Eureka your own question about polyetheretherketone composite reinforcement and every answer comes back with the patent numbers behind it.
Try EurekaA representative recent filing
WO2025250098A1 — Particle-reinforced PEEK matrix composite for wear and mechanical performance
The invention relates to a particle-reinforced Poly Ether Ether Ketone (PEEK) matrix composite material which exhibits superior wear resistance and mechanical qualities, and its method of preparation. This composite material offers superior mechanical and tribological qualities, as well as an extended service life, in comparison to PEEK-based composites utilized in the contemporary medical and aviation industries.Filed by Firat Universitesi Rektorlugu, published 2025-12-04 — one of the most recent entrants in a filing curve that is only now recovering from its 2022 lull.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5034157A | Injection moldable composite | 37 |
| 2 | CN103087468A | 一种高耐热、高耐磨聚醚醚酮复合材料及其制备工艺 | 22 |
| 3 | CN103146175A | 一种多面体低聚倍半硅氧烷改性PEEK复合材料 | 19 |
| 4 | CN105733179A | 一种聚醚醚酮复合材料制备方法 | 13 |
| 5 | CN117384463A | 一种碳纤增强磺化PEEK复合材料及其制备方法 | 11 |
| 6 | CN112457629A | 一种碳纤维表面接枝二维网络结构增强聚醚醚酮复合材料及其制备方法 | 11 |
| 7 | CN111410759A | 高温力学性能优异的CF/PEEK复合材料及其制备方法 | 11 |
| 8 | CN111440342A | 具有化学键强界面的CF/PEEK复合材料及其制备方法 | 11 |
| 9 | CN109401186A | 耐磨PEEK复合材料及其制备方法 | 10 |
| 10 | CN105524405A | 抗静电PEEK复合材料及其制备方法 | 10 |
Citation counts favour older filings that have had more time to accumulate references; read them as a marker of influence within this search, not as a ranking of current commercial importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Three signals stand out once the filing trend and IPC composition are read together.
Evidence base is concentrated in China
With only 5 US, 4 EPO, 3 PCT, 2 Australian and 2 Indian filings, any freedom-to-operate opinion for a non-China market is working from a small sample. A clearance search limited to Western offices will miss most of the prior art that actually exists on this topic.
A stop-start filing curve, not steady growth
The 2020 peak looks like a concentrated push by early movers rather than sustained industry-wide interest; the collapse to the 2022 midpoint and the slow climb since suggest a second, different cohort of filers is now entering the space.
Formulation is crowded, processing less so
Filler chemistry, loading ratios and coupling agents sit on dense prior art under C08K and C08L. Shaping and forming claims under B29C and B29B are comparatively less contested, which is where process-side differentiation is more likely to clear.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to polyetheretherketone composite reinforcement, with the prior art for and against each one.
Who is filing, and where the gaps sit
The assignee base is a long tail rather than a settled hierarchy: most named organisations show no filings in the latest year, and only one shows active current-year momentum.
One assignee is actively filing now
Anhui Sino New Material Technology Co., Ltd. is the only named assignee with filings recorded in the latest year, a sign that most of the historical filer base — universities and established chemical suppliers among them — is currently dormant on this specific claim territory.
University filers have gone quiet
Donghua University and Jilin University both show zero filings in the latest year, with Jilin down -100% year over year. Their historical filings remain part of the prior art landscape even though neither is currently active.
Co-filing is limited and mostly historical
ITT and named individual inventors, and Solvay Specialty Polymers USA with Cytec Industries, each show two joint filings — the strongest co-assignee links in the dataset. With only 7 pairs total across 82 families, most filing here is done solo rather than through joint ventures.
| Assignee | Recent year | YoY |
|---|---|---|
| Anhui Sino New Material Technology Co., Ltd. | 3 | — |
| Donghua University | 0 | — |
| Heilongjiang Xinda Enterprise Group Co., Ltd. | 0 | — |
| ITT Corporation | 0 | — |
| Jiangsu Junhua Special Polymer Materials Co., Ltd. | 0 | — |
| Jilin University | 0 | -100% |
| Wuhan Research Institute of Materials Protection, China Academy of Machinery Science and Technology Group Co., Ltd. | 0 | — |
| Aerospace Precision Products Co., Ltd. | 0 | — |
Where to take this next
The dataset points to specific next steps depending on whether the goal is clearance, sourcing or claim drafting.
Run a China-specific clearance search
With 64 of 82 records filed in China, a Western-only search will under-report prior art. A dedicated CNIPA search on the formulation claims (C08K, C08L) is the first gate before filing.
Search this topic in EurekaTrack the current filer cohort
Anhui Sino New Material Technology is the only assignee with active recent-year filings; watching its published applications will surface the direction the next wave of claims is heading.
Monitor assignees in EurekaProbe the shaping and textile-treatment gaps
B29C shaping claims and D06M textile-treatment claims trail formulation claims by a wide margin, suggesting more room for a defensible first claim on processing method than on filler chemistry.
Explore white space in EurekaCommon questions on PEEK composite patents
The assignee base in this dataset is a long tail rather than a small set of dominant holders: most named organisations, including several Chinese universities and specialty polymer makers, show historical filings but no activity in the latest year. Anhui Sino New Material Technology is currently the most active filer by recent-year count. Because 64 of the 82 tracked families were filed in China, the leading names by volume are predominantly Chinese material science firms and research institutes rather than the multinational suppliers that dominate PEEK resin production generally.
The trend data shows 17 filings in 2020, the highest of any year tracked, followed by a decline that reached zero at the 2022 midpoint before recovering to 7 by 2026. This pattern is consistent with an early wave of filings from a concentrated group of applicants exhausting near-term formulation ideas, followed by a gap before a newer cohort of filers began entering from around 2023 onward. Filing counts for the most recent one to two years are also understated because publication typically lags filing by about 18 months, so the 2026 figure will likely rise as later filings publish.
Formulation-related claims are the most crowded: C08K, covering additives used in polymers, appears in 70 of the 82 records, and C08L, covering polymer compositions generally, appears in 68. That means filler selection, loading ratios and compatibilizer chemistry sit on the densest prior art in this corpus. Shaping and forming claims under B29C appear in far fewer records, roughly a third of the corpus, indicating comparatively more open ground on the processing side than on the composition side.
The IPC subclasses with the fewest records — D06M for textile chemical treatment and H01B for cables, conductors and insulators, each at only 6 records — point to under-claimed branches around continuous-fiber textile pre-treatment and PEEK composite use in conductor insulation. B29B, covering plastics preparation, is also relatively light at 8 records compared to the 70-plus counts on the additive and composition classes. These lower-density areas are where a first claim is more likely to clear against existing prior art, though a full clearance search is still required before relying on that gap.
Not directly, but it changes where the risk sits. Patent rights are territorial, so a dense CNIPA filing base does not by itself block filing or practicing in the US, Europe or elsewhere. However, because only 5 US, 4 EPO and 3 PCT filings appear in this dataset against 64 Chinese filings, a freedom-to-operate opinion built only from Western patent offices will miss the majority of relevant prior art and formulation claims that could still surface through PCT national-phase entry or citation in later Western filings.
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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.