Epoxy Resin Biodegradable Polymer Patents: Leaders & Trends 2026
- Filing peaked in 2025 at 80 families after climbing from 5 in 2017 — but growth flattened around the 2022 midpoint (37), so the run-up is not a straight line.
- China dominates the receiving offices with 189 filings against 54 in the US and 44 at the EPO, meaning claim strategy there is shaped largely by CNIPA prosecution norms.
- Momentum has cooled at several named filers multiple tracked assignees show zero filings in the latest year, including one down 100% year-on-year, even as the overall dataset keeps growing.
Filing growth compares 2021 (35 records) with 2024 (74) — 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 403 records in scope (CR5), not by the ranked leaders only.
What this dataset covers
This landscape tracks patent families at the intersection of epoxy resin chemistry and bio-based or degradable thermoset design — bio-based epoxy monomers, degradable network architectures, recyclable thermosets and vitrimer chemistries, filed between 2015 and mid-2026. The search combines title/abstract terms for epoxy formulations with degradable- and vitrimer-specific language, then restricts to core polymer-chemistry IPC classes so adjacent but unrelated epoxy uses (structural, electronic potting, etc.) are only captured where the degradability or bio-based claim language appears.
Because publication typically lags filing by roughly 18 months, the most recent year in the trend is necessarily undercounted; treat 2026 as a partial signal rather than a plateau.
Filing trend and technology composition
Two views of the same 403-family dataset: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filing trend (2017–2026)
Filings rose from 5 in 2017 to a peak of 80 in 2025. The midpoint year, 2022, sits at 37 — roughly half the peak — which means most of the growth in this space is recent rather than steady, and the 2026 figure (partial) should not be read as a slowdown.
Technology composition by IPC subclass
C08L (polymer compositions) and C08G (condensation polymers) dominate, appearing in 358 and 304 records respectively — expected, since bio-based and degradable epoxy claims are fundamentally composition and condensation chemistry. C08K (additives, 147) and C08J (processing, 179) show meaningful but secondary claim activity, while C09J/C09D (adhesives and coatings, 39 and 33) and B32B (laminates, 17) mark smaller downstream application pockets.
Shares are the percentage of the 403 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Epoxy Resin Biodegradable Polymer with Eureka
This page is one run against one query. Ask Eureka your own question about epoxy resin biodegradable polymer and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Epoxy composition comprising a bio-based epoxy compound (US20230312911A1, Henkel AG & Co. KGaA)
The present invention relates to an epoxy composition comprising a) an epoxy resin; b) a curing agent; and c) a bio-based epoxy compound having a defined structure. The composition can be used as a structural adhesive, a coating and a primer.Claim scope centres on a specific bio-based epoxy compound structure combined with conventional resin and curing-agent components, positioned for adhesive, coating and primer end uses.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20050119371A1 | Bio-based epoxy, their nanocomposites and methods for making those | 88 |
| 2 | US6570029B2 | No-flow reworkable epoxy underfills for flip-chip applications | 31 |
| 3 | US20020013420A1 | Thermally degradable epoxy underfills for flip-chip applications | 26 |
| 4 | CN109467677A | 一种生物基环氧树脂组合物及其在制备环氧树脂胶膜中的应用 | 25 |
| 5 | US20060014924A1 | Reworkable adhesives containing thermally labile groups | 25 |
| 6 | US20150252185A1 | Foam, composition, and method | 23 |
| 7 | CN114395216A | 生物基超支化聚合物环氧树脂及其制备方法 | 21 |
| 8 | CN104527177A | 一种用于印刷电路板的可回收半固化片、固化片、覆铜板及其制备、回收方法 | 21 |
| 9 | CN114195984A | 一种含动态烯胺键的双酚A型环氧固化剂与可降解环氧树脂及其制备、重塑、降解方法 | 20 |
| 10 | US20170044361A1 | Composition for manufacturing vitrimer resins of epoxy/anhydride type comprising a polyol | 17 |
Citation counts favour older records that have had more time to accumulate citations within the searched corpus — read them as markers of influence on subsequent filings, not as a ranking of current commercial relevance.
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.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers say
Three read-throughs from the filing trend, geography and citation pattern that matter for anyone deciding where to file next or who to watch.
Filing accelerated late, not steadily
The jump from 37 filings at the 2022 midpoint to 80 at the 2025 peak shows the bulk of activity in bio-based and degradable epoxy chemistry is recent. A flat or declining first half followed by a steep back half suggests the field only recently became commercially or regulatorily urgent enough to justify filing budgets.
China is the primary filing venue
With nearly half of all receiving-office activity, China leads by a wide margin over the US, EPO, WIPO, India and South Korea combined-per-office figures. That skews prosecution norms, claim drafting conventions and likely licensing counterparties toward Chinese entities and CNIPA practice.
One early bio-based epoxy filing anchors the field
The most-cited record in this corpus predates most of the filing surge and covers bio-based epoxy nanocomposites broadly — a strong signal that later, more specific filings are building on (or designing around) foundational composition claims rather than starting from a blank slate.
Named-assignee activity has cooled even as the field grows
Several tracked assignees show zero filings in the latest year and one shows a full year-on-year drop to zero. That divergence — aggregate growth alongside individual assignee slowdown — points to new entrants driving the 2025 peak rather than incumbents scaling up.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to epoxy resin biodegradable polymer, with the prior art for and against each one.
Who is active, and where the claim space is still open
403 families and a small number of co-filing pairs point to a field with a few coordinated groups and a long tail of single-filer entrants.
LG Chem Ltd. + Kukdo Chemical Co., Ltd.
This is the strongest co-assignee pair in the dataset by a wide margin over the next pairs (each at 2 shared families), suggesting a deliberate joint-development or supply arrangement around bio-based epoxy formulation rather than incidental co-filing.
Arkema France with two academic/institutional partners
Arkema France (Arkema) appears in two separate co-assignee pairs, each with a research institution, at two shared families apiece — a pattern consistent with sponsored academic research feeding into corporate filings rather than pure in-house R&D.
Indian Institute of Science remains the most active named filer currently
Despite a -25% year-on-year decline, this institution still files more in the latest tracked year than any other named assignee in the momentum data, indicating a slowing but still-leading academic program.
| Assignee | Recent year | YoY |
|---|---|---|
| Indian Institute of Science | 3 | -25% |
| Aditya Birla Chemicals (Thailand) Ltd. | 1 | 0% |
| LG Chem Ltd. | 0 | — |
| Adasil New Materials (Wuhu) Co., Ltd. | 0 | — |
| Arkema France | 0 | — |
| Swancor Advanced Materials Co., Ltd. | 0 | -100% |
| Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences | 0 | -100% |
| Kukdo Chemical Co., Ltd. | 0 | — |
Where to take this
The dataset points to a fast-growing but geographically concentrated field with a small set of coordinated filers and a large single-filer tail — useful starting points for deeper diligence.
Run a China-first freedom-to-operate check
With 189 of the tracked filings routed through China, any clearance search that stops at the EPO or USPTO is checking less than a third of the active claim space.
Explore Eureka for filing analysisTrack the co-filing pairs for licensing signals
The LG化学/国都化学 pairing and the two Arkema-linked pairs are the clearest evidence of coordinated development in this corpus; both are worth monitoring for follow-on filings or spin-outs.
Explore Eureka for assignee trackingWatch the under-claimed branches before they fill in
Laminate interfaces, coatings/inks and heterocyclic curing-agent chemistry carry noticeably fewer filings than the core composition classes — a narrower but currently more open filing window.
Explore Eureka for white space mappingCommon questions
In this corpus, it means an epoxy resin, curing agent or additive system whose claims specifically recite a bio-based feedstock (such as plant oil or lignin-derived epoxy monomers), a designed degradation mechanism, or a dynamic covalent network that permits reprocessing — commonly branded as vitrimer chemistry. Claims that merely use a conventional epoxy in a biodegradable-sounding application without a bio-based or degradable structural feature are not what this dataset is built to capture. The IPC restriction to C08G59, C08L63 and C08J11 further narrows results to core resin-composition and reprocessing chemistry rather than incidental epoxy use.
China accounts for 189 of the tracked filings, more than the US, EPO, WIPO, India and South Korea combined in this dataset. That reflects both a large domestic polymer manufacturing base and CNIPA's relatively lower filing cost and faster examination timelines compared with the EPO or USPTO, which encourages incremental and defensive filing at higher volume. It does not necessarily mean the most commercially significant claims originate there — jurisdiction choice and claim value are separate questions.
The trend from 2017 (5 filings) to the 2025 peak (80 filings) shows growth, but it is not linear — the 2022 midpoint sits at only 37, roughly half the eventual peak, indicating the strongest growth happened in the back half of the window. The 2026 figure will look lower simply because publication lags filing by around 18 months, so recent-year counts are always undercounted at the time of measurement. Read the shape as accelerating through 2025 rather than plateauing, with the true 2026 level not yet visible in the data.
The dataset shows a mix of corporate and academic/institutional filers rather than one dominant firm — LG Chem Ltd. and Kukdo Chemical Co., Ltd. form the strongest co-filing pair with 8 shared families, and Arkema France appears in two separate research partnerships. Momentum data also shows Indian Institute of Science leading current-year activity among named filers despite a year-on-year decline, while several other tracked assignees show no filings at all in the latest year. This points to a field without an entrenched single leader — a long tail of moderate filers rather than one company holding the space.
The most-cited record in the corpus, US20050119371A1, covers bio-based epoxy compositions and nanocomposites broadly and has accumulated 88 citations, making it a foundational reference that later, narrower filings likely had to design around. More recent representative filings, such as Henkel's US20230312911A1, claim specific bio-based epoxy compound structures combined with defined curing agents for adhesive, coating and primer uses — narrower in scope but still relevant to anyone formulating in the same structural family. A proper freedom-to-operate review needs both the broad foundational claims and the newer structure-specific ones checked together.
Research Epoxy Resin Biodegradable Polymer in depth with Eureka
Go past this page: query the whole epoxy resin biodegradable polymer corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.