Epoxy Coating & Film Patent Landscape 2026
The epoxy coating and film patent field spans 2,390 families and is in a growth stage, with annual filing volume trending upward over the multi-year window. Activity is moderately concentrated among established coatings multinationals — led by AkzoNobel, Dow Chemical, and Kansai Paint — with China and Japan dominating jurisdictional filings.
AkzoNobel leads a moderately concentrated field with active Japanese and Western challengers
AkzoNobel Coatings International holds the top position in applicant rankings, followed closely by Dow Chemical and Kansai Paint. The top five filers together account for 21% of the hundred largest filers’ combined total, signaling a moderately concentrated competitive structure rather than outright dominance by a single player.
The gap between the leader and the second-ranked applicant is narrow — AkzoNobel at 178 patent records versus Dow Chemical at 162 and Kansai Paint at 155 — indicating a competitive tier of roughly five to six players with comparable filing intensity rather than a single dominant actor pulling clearly ahead.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | AkzoNobel Coatings International B.V. | 178 | |
| 2 | The Dow Chemical Company | 162 | |
| 3 | Kansai Paint Co., Ltd. | 155 | |
| 4 | Somar Corporation | 145 | |
| 5 | KCC Corporation | 112 | |
| 6 | Nippon Paint Co., Ltd. | 105 | |
| 7 | DIC Corporation | 104 | |
| 8 | Dai Nippon Toryo Co., Ltd. | 92 | |
| 9 | Sumitomo Bakelite Co., Ltd. | 91 | |
| 10 | Dow Global Technologies LLC | 86 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Shell Internationale Research Maatschappij B.V. | 74 | |
| 12 | PPG Industries Ohio Inc. | 73 | |
| 13 | Sika Technology AG | 73 | |
| 14 | Nitto Denko Corporation | 65 | |
| 15 | EI DU PONT DE NEMOURS & CO | 62 | |
| 16 | Morton International Inc. | 61 | |
| 17 | BASF Coatings GmbH | 55 | |
| 18 | Sumitomo Durez Co., Ltd. | 53 | |
| 19 | Blue Cube IP LLC | 53 | |
| 20 | 3M Company | 49 |
The leading positions are held by large, globally active coatings and specialty chemicals firms. Their sustained filing activity implies mature internal R&D pipelines and portfolio-maintenance strategies, which means new entrants and mid-tier challengers must differentiate through application specificity or materials innovation rather than volume alone.
Filings from approximately 2024 onward are subject to publication lag and are likely under-counted; trend readings for those years should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Sustained multi-year growth with a dominant coatings chemistry core and several adjacent technology branches
Annual filing activity has grown approximately 9% over the recent window, consistent with the field’s growth-stage lifecycle designation. The technology composition is heavily skewed toward coatings formulation and condensation polymer chemistry, with a long tail of adjacent branches reflecting diverse end-use applications.
Annual filing trend
Annual filings fluctuated between roughly 227 and 296 patent records per year from 2017 through 2025, with 2024 representing the highest recorded annual volume in the dataset. The 2026 figure is heavily incomplete due to publication lag and should not be read as a decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
The C09D coatings and paints class overwhelmingly dominates the technology mix, followed by C08G condensation polymers and C08L polymer compositions. Downstream application branches — including B05D coating processes, B32B layered products, C09J adhesives, H05K printed circuits, and H01L semiconductor devices — appear at substantially lower counts, pointing to the field’s breadth across industrial end-uses while chemistry remains the primary innovation focus.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Epoxy resin powder coating composition
An epoxy resin powder coating composition is described, comprising an epoxy resin and at least a hardener and a filler compounded thereto, wherein the filler is a mixture of from 30 to 180 parts by weight of a needle-like glass powder having an average length of at least 40 mu m and an aspect ratio of at least 4:1 and at least 30 parts by weight of a… (excerpt from the patent abstract)
Open this patent in Eureka →| # | Patent | Citations |
|---|---|---|
| 1 | Photocurable epoxy compositions containing group V… | 1,293 |
| 2 | Photochromic epoxy resin coating composition and a… | 417 |
| 3 | Activatable material for sealing, baffling or rein… | 263 |
| 4 | Powder coating composition of semi-crystalline pol… | 202 |
| 5 | Stable aqueous epoxy dispersions | 175 |
| 6 | Smooth, flexible powder coatings | 157 |
| 7 | Epoxy polysiloxane coating and flooring compositions | 151 |
| 8 | Fire protective intumescent mastic composition and… | 127 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The combination of growth-stage dynamics, moderate concentration, active cross-industry collaboration, and strong Asian jurisdictional filings shapes where differentiation opportunities are most accessible.
Growth stage: annual volume rising, multi-year window up 9%
The field is classified as Growth, with annual filing volume still rising and the recent-window growth rate at 9%. The 2024 peak year has not yet shown signs of easing. This stage implies that foundational patent positions are still being established, making early filing in emerging sub-segments strategically valuable before the field matures.
Growth stageModerate concentration: top five hold 21% of the top-100 filers’ total
The top five filers — AkzoNobel, Dow Chemical, Kansai Paint, Somar, and KCC — collectively hold 21% of the top-100 filers’ combined patent records. The close spacing of counts across the top three suggests no single player has built an insurmountable lead. Mid-tier challengers with focused application strategies retain viable pathways to meaningful portfolio positions.
Moderate concentrationVertical supply-chain partnerships dominate co-filing activity
The most active co-filing pair is DIC Corporation and Kurimoto Ltd. with 25 joint records, followed by Dai Nippon Toryo and Kurimoto Ltd. at 17. Nippon Paint and Honda Motor Company filed 9 records jointly, illustrating paint-supplier and automotive OEM partnerships. Dow Chemical and Essex Specialty Products account for 7 joint records. These patterns reflect coatings suppliers collaborating with downstream industrial users — steel pipe manufacturers, automakers, and infrastructure firms — rather than horizontal competitor alliances.
Supply-chain co-filingChina and Japan lead filings; US and EPO are significant but secondary
China is the leading filing jurisdiction, followed by Japan, the United States, and the EPO. South Korea, Canada, WIPO, and the United Kingdom form a secondary tier. The strong Asian presence reflects both the manufacturing intensity of the region and the home-market filing strategies of Japanese and Korean coatings majors. An R&D team seeking broad protection should prioritize China, Japan, the US, and EPO as the core four jurisdictions.
Asia-first geographyGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| DIC Corporation | Kurimoto, Ltd. | 25 |
| Dai Nippon Toryo Co., Ltd. | Kurimoto, Ltd. | 17 |
| Nippon Paint Co., Ltd. | Honda Motor Co., Ltd. | 9 |
| Dow Chemical Company | Essex Specialty Products LLC | 7 |
| Kansai Paint Co., Ltd. | JFE Steel Corporation | 6 |
| Nippon Paint Co., Ltd. | Nippon Steel Corporation | 6 |
| DIC Corporation | Meishin Corporation | 6 |
| Dai Nippon Toryo Co., Ltd. | AGC Inc. | 6 |
| DIC Corporation | Dai Nippon Toryo Co., Ltd. | 5 |
| Kansai Paint Co., Ltd. | Hitachi Zosen Corporation | 4 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
AkzoNobel and Dow Chemical lead on volume; Kansai Paint and Somar are strong challengers
The top players share a common focus on epoxy-resin coatings chemistry (C09D 163) and condensation polymer platforms (C08G 59), but differ in their secondary emphasis — Dow tilts toward polymer chemistry, while Kansai and Nippon Paint extend into coating-process claims.
AkzoNobel Coatings International
AkzoNobel Coatings International holds the top position with 178 patent records, concentrated in epoxy-resin coatings formulation (C09D 163), protective coatings (C09D 5), and polymer compositions (C08L 63). The applicant momentum data shows a ‘new entrant’ signal in the recent period, suggesting recent filing activity has resumed or accelerated from a low prior-period base rather than reflecting a long-established continuous filing run.
patent records: 178Dow Chemical Company
Dow Chemical ranks second with 162 patent records and, together with the affiliated Dow Global Technologies entity at 86 patent records, represents the largest combined Dow-family footprint in the dataset. Technology focus spans epoxy coatings (C09D 163), condensation polymers (C08G 59), and protective coatings (C09D 5). KCC Corporation, ranked fifth at 112 patent records, shows a downward momentum trend of -42% in recent filings relative to its prior period, opening space for challengers in its segments.
patent records: 162| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Somar Corporation | 5 | ▲ new entrant |
| AkzoNobel Coatings International B.V. | 2 | ▲ new entrant |
| KCC Corporation | 14 | ▼ -42% |
| Dai Nippon Toryo Co., Ltd. | 1 | ▲ new entrant |
Under-served adjacent branches in polymer compositions, coating processes, and layered products
Several IPC branches adjacent to the dominant coatings core show relatively lower filing share, representing areas where the existing patent density may leave room for differentiated claims — particularly where application-specific performance requirements are rising.
B32B · Layered products & laminates
Layered products and laminates account for a comparatively low share of the overall filing mix. As epoxy films are increasingly specified in multi-layer architectures for electronics, automotive, and construction applications, this branch is technically adjacent to the core chemistry base and has a plausible entry path through formulation-to-structure claims. Teams with expertise in film adhesion and interlayer compatibility could build differentiated positions here.
Search this in Eureka →C09J · Adhesives
Epoxy-based adhesives sit at the interface of the coatings and bonding domains and show a relatively sparse filing count within this landscape. The technical overlap with structural bonding, underfill materials for electronics, and pipeline joint sealing gives this branch practical industrial relevance. Entry paths exist through formulation patents targeting cure kinetics, flexibility, or substrate-specific adhesion in sectors such as H05K printed circuits or F16L pipe fittings, both of which appear in the technology tail.
Search this in Eureka →How leading applicants differ across technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | C09D 163 · Coatings, paints & inks | C09D 5 · Coatings, paints & inks | C09D 7 · Coatings, paints & inks | C08G 59 · Condensation polymers | C09D 167 · Coatings, paints & inks |
|---|---|---|---|---|---|
| Dow Chemical Company | Strong · 158 | Strong · 99 | Absent | Strong · 155 | Absent |
| Somar Corporation | Strong · 120 | Strong · 130 | Absent | Strong · 72 | Absent |
| Kansai Paint Co., Ltd. | Strong · 115 | Strong · 105 | Absent | Moderate · 44 | Emerging · 19 |
| AkzoNobel Coatings International B.V. | Strong · 102 | Strong · 99 | Moderate · 28 | Absent | Absent |
| KCC Corporation | Strong · 93 | Strong · 89 | Moderate · 40 | Absent | Absent |
| Morton International Inc. | Strong · 77 | Strong · 61 | Absent | Strong · 61 | Absent |
| Sumitomo Bakelite Co., Ltd. | Strong · 77 | Strong · 77 | Moderate · 37 | Absent | Absent |
Frequently asked questions
The dataset covers 2,390 patent families in scope. This represents the deduplicated family-level count across the global filing corpus analyzed.
AkzoNobel Coatings International is the top-ranked applicant with 178 patent records, followed by Dow Chemical at 162 and Kansai Paint at 155.
China leads all jurisdictions in patent record count, followed by Japan, the United States, and the EPO. South Korea, Canada, WIPO, and the United Kingdom form a secondary tier of significant filing destinations.
Annual filing volume has shown a multi-year upward trend consistent with a Growth lifecycle stage, with a 9% growth rate over the recent window and 2024 representing the highest annual volume in the dataset. The 2026 data point is incomplete due to publication lag.
The C09D coatings and paints class is by far the largest branch, followed by C08G condensation polymers and C08L polymer compositions. Downstream application branches such as B05D coating processes and B32B layered products appear at lower but notable counts.
The most active co-filing pair is DIC Corporation and Kurimoto Ltd. with 25 jointly filed records. Dai Nippon Toryo and Kurimoto Ltd. follow with 17 joint records. Nippon Paint and Honda Motor Company account for 9 joint records, reflecting paint-supplier and automotive OEM partnerships.
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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.