Biodegradable Polymer Additive Patents: Leaders & White Space 2026
A data-backed view of biodegradable polymer additive patents: filing trends since 2017, the IPC classes carrying the most claim density, assignee concentration and where claim space remains open.
Filing growth = 2021 (72 records) → 2024 (65); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 1,347 records in scope (CR5), not the ranked leaders only.
What the biodegradable polymer additive patent record actually shows
Biodegradable polymer additive patenting spans two distinct claim traditions that happen to converge on the same search string: materials science filings built around polymer compositions and additive chemistry (C08L, C08K, C08G), and medical device and drug-delivery filings that use biodegradable plastics as a functional component (A61K, A61L). A reader coming from either tradition will find the other’s prior art sitting inside the same 1,347-record set, which is why cross-class searching matters more here than in a single-discipline field.
The dataset covers 2015 through the 2026-08-31 cut-off, with receiving-office activity concentrated in the United States, Europe and the WIPO PCT route, and meaningful volume also filed into India, Canada and Australia. Family-level counting is used throughout so that multi-jurisdiction and continuation filing does not inflate any single assignee's apparent footprint.
Filing trend and technology composition
Two views of the same 1,347-record set: how filing activity has moved year over year, and which IPC subclasses carry the claim density practitioners need to search against before drafting.
Filing rose to a 2022 peak, then eased
Annual filings climbed from 29 in 2017 to a peak of 90 in 2022. The 2021-to-2024 window shows 72 falling to 65 records, a 10% decline over three years — the last span long enough to be read as complete. Counts for 2025 and 2026 are still incomplete under the roughly 18-month gap between filing and publication, so they understate real activity and should not be read as a continuation of that decline.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
Polymer compositions and medicinal preparations dominate class coverage
C08L (polymer compositions) appears on 36.7% of the 1,347 records and A61K (medicinal preparations) on 29.3%, the two largest single-class shares in the set. C08K (additives in polymers) and A61L (sterilising and disinfecting) follow at 17.2% and 14.0%. Because a record can carry several IPC codes, these shares add up to well over 100% and should be read as coverage, not as a partition of the field.
Shares are the percentage of the 1,347 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Biopolymers & Biodegradable Plastics: Biodegradable Polymer Additive Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about biopolymers & biodegradable plastics: biodegradable polymer additive patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative filing and the most-cited prior art
US9174000B2 — Drug delivery device with biodegradable plastic components
The filing (Sanofi-Aventis Deutschland, dated 2015-11-03) claims a drug delivery device combining a housing component, a cartridge holder for a product-containing cartridge with a slidable piston, and a drive mechanism engaging that piston — with at least one of these components made at least partly of biodegradable plastic.Abstract text is drawn directly from the patent record; component numbering in brackets refers to the original drawings.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5747058A | High viscosity liquid controlled delivery system | 728 |
| 2 | US20100210745A1 | Molecular Healing of Polymeric Materials, Coatings, Plastics, Elastomers, Composites, Laminates, Adhesives, a… | 718 |
| 3 | US6280457B1 | Polymer covered vaso-occlusive devices and methods of producing such devices | 560 |
| 4 | EP0458745A1 | Polymeric gas or air filled microballoons usable as suspensions in liquid carriers for ultrasonic echography | 526 |
| 5 | WO1990001969A1 | Biodegradable polymeric endoluminal sealing | 427 |
| 6 | US6413536B1 | High viscosity liquid controlled delivery system and medical or surgical device | 391 |
| 7 | US4880592A | Manufacture of polymeric products | 376 |
| 8 | US6607548B2 | Resorbable polymer compositions | 308 |
| 9 | US20040101557A1 | High viscosity liquid controlled delivery system and medical or surgical device | 294 |
| 10 | US5968542A | High viscosity liquid controlled delivery system as a device | 274 |
Citation counts inside this corpus skew toward older filings simply because they have had longer to accumulate citations — treat them as a signal of influence on the field rather than a ranking of current importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three figures from the dataset that change where a team should file, cite or watch, rather than simply describing that the data exists.
No single company controls the field
The leader holds 75 records and the fifth-ranked assignee holds 28 — a real gap, but nowhere near dominance. With the top 10 combined at only 24.3% of all records, the remaining three-quarters of the field is a long tail of companies filing in low volume, which is where freedom-to-operate risk is more fragmented than concentrated.
Composition claims are the most contested ground
C08L and A61K between them touch two-thirds of the record set by coverage, meaning most incremental composition or formulation claims will need to clear the densest prior art in the corpus. B32B (layered products, 10.8%) and C08G (condensation polymers, 6.8%) carry noticeably lighter coverage and are worth checking for open claim territory.
Growth has plateaued, not collapsed
The 2021-to-2024 window shows a 10% decline from 72 to 65 records — a real cooling from the 2022 peak, but a modest one. Because publication lags filing by roughly 18 months, the 2025-2026 figures in the trend chart are still incomplete and should not yet be read as confirming a continued slide.
US, EPO and PCT carry the bulk of filing activity
The United States (267), Europe (227) and the WIPO PCT route (201) together account for the largest share of receiving-office activity, with India, Canada and Australia forming a secondary tier. A filing strategy built only around the US and EPO will miss meaningful activity already routed through PCT and India.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to biopolymers & biodegradable plastics: biodegradable polymer additive patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| ETH Zurich | University of Zurich | 12 |
| Novamont S.p.A. | BASTIOLI CATIA | 6 |
| Novamont S.p.A. | FLORIDI GIOVANNI | 4 |
| Novamont S.p.A. | DEL TREDICI GIANFRANCO | 4 |
| Novartis AG | NOVARTIS PHARM GMBH | 4 |
| Novamont S.p.A. | SALVATI PIERO | 2 |
| Novamont S.p.A. | LOMBI ROBERTO | 2 |
| Novamont S.p.A. | BASTIOLI ANGELO | 2 |
Co-assignment is rare in this set — only 10 co-assignee pairs appear across 1,347 records — and the strongest pairing links an academic institution with a partner research body, alongside one industrial assignee's pairings with named individual inventors. This suggests most biodegradable polymer additive patenting is done by single-assignee teams rather than joint ventures.
Turning this landscape into a filing or freedom-to-operate decision
The figures above show where claim density sits and who holds it; the next step is running your own composition or device concept against that same prior art.
Stress-test a draft claim against the densest classes
Run a candidate composition or additive claim against the C08L and A61K prior art directly, rather than against the field average, since that is where a new filing is most likely to collide with existing claims.
Search prior art in EurekaTrack the long tail, not just the leader
With three-quarters of filings held outside the top 10 assignees, monitoring should extend beyond the largest filers to catch emerging entrants before they consolidate a position.
Set up assignee monitoring in EurekaRecheck the trend once 2025-2026 fills in
Because publication lags filing by around 18 months, treat any read on the 2025-2026 slowdown as provisional and revisit the filing trend once those years mature.
Explore the full trend in EurekaCommon questions on biodegradable polymer additive patents
The dataset in scope contains 1,347 published records used as the assignee ranking's family base, covering filings from 2015 through the 2026-08-31 cut-off. This is not the entire universe of biodegradable polymer or additive patents worldwide, but the set returned by a claim- and title-focused search string targeting biodegradable polymer additives and compostable polymer compositions specifically. Filing activity peaked in 2022 at 90 records in a single year, and the most recent years remain understated because publication lags filing by roughly 18 months.
The ranked list covers 100 companies, with the leader holding 75 records and the tenth-place assignee holding 21. The top 5 assignees combined account for 15.6% of all 1,347 records in scope, and the top 10 combined account for 24.3% — meaningful concentration at the top but not dominance, since roughly three-quarters of filings sit outside that top 10. Reviewing the full ranked table rather than just the leader gives a fuller picture of who is active.
C08L (polymer compositions) is the single most-covered class, appearing on 36.7% of the 1,347 records, followed by A61K (medicinal preparations) at 29.3%. C08K (use of additives in polymers) and A61L (sterilising and disinfecting) follow at 17.2% and 14.0% respectively, with B32B, B29C and C08G rounding out secondary coverage. Because records often carry more than one class, a thorough prior-art search should span composition, additive-use and processing classes together rather than relying on a single subclass.
Filing rose from 29 records in 2017 to a peak of 90 in 2022, then eased to 65 by 2024 — a 10% decline across the 2021-to-2024 window, which is the most recent span that can be read as complete. Figures for 2025 and 2026 are still filling in under the typical 18-month gap between filing and publication, so it would be premature to call this a firm downturn rather than a plateau after a strong 2022. Anyone tracking momentum should revisit the 2025-2026 counts once they mature.
The lighter-coverage classes in this dataset — B32B layered products at 10.8%, B29C shaping of plastics at 8.2%, and C08G condensation polymers at 6.8% — carry noticeably less claim density than C08L and A61K, making them worth a closer look for underclaimed combinations. The long tail of assignees outside the top 10 (three-quarters of all records) also suggests the field has not consolidated around a small set of dominant designs. Co-assignment is rare in this corpus, with only 10 pairs identified, which points to most innovation coming from single-assignee R&D rather than joint 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.