Textile & Fiber Recycling Patent Landscape 2026
The textile and fiber recycling patent space is a compact, highly concentrated field dominated by a single applicant holding more than a third of all patent families in scope, with chemical depolymerization of polyesters as the central technical route. Filing volume peaked in 2020 and has eased since, placing the field in a post-peak phase — though several new entrants emerged in recent years, signaling continued selective investment.
One dominant filer in a small, concentrated field
Avantgarde Shanghai Environmental Tech Co Ltd leads the applicant ranking by a substantial margin, holding the top position among all filers tracked in this landscape.
The top five filers account for 60% of the hundred largest filers’ combined total, indicating a tightly concentrated competitive structure where the leading tier holds significant leverage over the core intellectual property.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Avantgarde Shanghai Environmental Tech Co Ltd | 19 | |
| 2 | Taclov LLC | 6 | |
| 3 | Apani Systems Inc | 4 | |
| 4 | Wellman Inc | 4 | |
| 5 | Teknologian tutkimuskeskus VTT Oy (VTT Finland) | 3 | |
| 6 | International Business Machines Corporation | 3 | |
| 7 | University College Cork, National University of Ireland Cork | 2 | |
| 8 | INEOS US Chemicals Co | 2 | |
| 9 | Taclov LLC | 2 | |
| 10 | Hybridworks Chemical LLC | 2 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Jurong Bastep Composite Materials | 1 | |
| 12 | Carl S. Nichols | 1 | |
| 13 | Sanko Tekstil Isletmeleri Sanayi ve Ticaret AS | 1 | |
| 14 | Embraer SA | 1 | |
| 15 | Korea Institute of Materials Science | 1 | |
| 16 | Ravel Holdings Inc | 1 | |
| 17 | Zhejiang Sci-Tech University | 1 | |
| 18 | Yuyao Dafa Chemical Fiber Co Ltd | 1 | |
| 19 | IBM United Kingdom Ltd | 1 | |
| 20 | Tony Clifford Moore | 1 |
The dominant players’ positions — built largely around polyester depolymerization chemistry (C08J and C07C classes) — suggest that chemical recycling of synthetic fibers is the defensible core of this space, and new entrants face a well-occupied prior-art environment in that route.
Patent families published within approximately the last 18–24 months are likely under-counted due to standard publication lag; recent-period figures 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.
A 2020 peak, subsequent easing, and a chemistry-heavy technology mix
Annual filing activity surged to a peak in 2020 and has eased back since; the technology composition is dominated by polymer processing and acyclic/carbocyclic compound classes, reflecting a field anchored in chemical depolymerization rather than mechanical recycling.
Annual filing trend
Filings reached a high point in 2020 and have declined in subsequent years; the most recent two years should be read as provisional given publication lag. The multi-year trajectory from 2017 confirms the field emerged and scaled rapidly before pulling back.
↗ Hover for values · click a bar to ask EurekaTechnology composition
C08J (polymer processing and solutions) is the dominant IPC branch, followed by C07C (acyclic and carbocyclic compounds) and B29B (plastics preparation). Fiber-specific classes such as D01F (chemical filament and fibre features) and D01D (man-made filament spinning) are present but represent a smaller share, pointing to a chemical-first rather than fiber-processing-first R&D orientation.
↗ 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.
Polyester recycling process with pre-reaction puri…
A depolymerization reaction of a polyester input with an organocatalyst and an alcohol solvent produces (i) a recycled monomeric or oligomeric diester from the polyester, (ii) the organocatalyst for reuse, and (iii) the alcohol solvent, which may also be reused. The presence of volatile impurities, such as water, acetyl aldehyde, and organic solvents can… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 一种废聚酯原料中分离获得再生聚酯的方法 | 24 |
| 2 | Food quality polyester recycling | 22 |
| 3 | Modular textile recycling system and process | 19 |
| 4 | Food quality polyester recycling | 16 |
| 5 | Method for recycling waste polyester | 14 |
| 6 | Method for recycling waste polyester with continuo… | 7 |
| 7 | 一种废旧涤纶纺织品的回收方法 | 4 |
| 8 | Food quality polyester recycling | 4 |
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 high concentration, a post-peak lifecycle, and narrow technology coverage creates distinct implications for incumbents reinforcing positions and challengers seeking entry points.
Post-peak field, annual volume easing from 2020 high
The lifecycle stage is characterized as Decline, with annual filings easing back from the 2020 peak. The field is not dead — several new entrants appeared in recent years — but the rapid growth phase has passed. R&D teams should expect a more competitive prior-art environment and longer prosecution timelines in the core polyester depolymerization route.
Lifecycle: DeclineTight top tier; large gap to mid-field
The top five filers hold 60% of the hundred largest filers’ combined total, and the leading applicant alone accounts for 19 patent families. The second-ranked applicant holds 6 patent families, and the third and fourth hold 4 each — a steep drop that leaves the mid-field with limited blocking power. Challengers entering core chemistry routes will encounter dense prior art from the leader.
High concentrationIBM entities are the only confirmed co-filers
The only recorded co-applicant relationships involve International Business Machines Corporation filing jointly with IBM United Kingdom Ltd Intellectual Property Department and with its Chinese affiliate. These are internal corporate family filings rather than cross-industry partnerships. No academic-industry or cross-sector collaboration is recorded in this corpus, which is a notable absence given the sustainability-driven ecosystem around textile recycling.
Minimal co-filingUS leads filings; Europe and China are secondary
The United States is the lead filing jurisdiction, followed by Europe via the EPO and China. WIPO PCT filings and India also appear, indicating that at least some applicants are pursuing international coverage. The relatively low China count — given the Chinese-headquartered leader — may reflect a strategy of filing core chemistry in Western markets. Jurisdictions such as Brazil, Japan, and Germany appear with single records, suggesting incomplete geographic coverage by most filers.
US-led, selective globalGo 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 |
|---|---|---|
| International Business Machines Corporation | IBM China Co Ltd | 1 |
| International Business Machines Corporation | IBM United Kingdom Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Avantgarde Shanghai leads; IBM and Apani are new entrants to watch
The applicant landscape has a clear leader with deep chemistry coverage and a set of smaller, recently active challengers whose momentum trajectories suggest growing ambitions in adjacent routes.
Avantgarde Shanghai Environmental Tech Co Ltd
Holding 19 patent families — by far the largest portfolio in this corpus — Avantgarde Shanghai concentrates its filings across C08J 11 (polymer processing and solutions), C07C 67, and C07C 69 (acyclic and carbocyclic compounds), consistent with a chemical depolymerization strategy targeting food-grade and fiber-grade polyester recycling. No momentum data is recorded for this applicant, suggesting its dominant base was established in the prior filing window rather than through recent acceleration.
patent families: 19International Business Machines Corporation
IBM enters this landscape as a new entrant with recent activity of 4 patent families, focusing on C08J 11, C07C 67, and C07C 29 — a chemistry profile closely overlapping with the leader’s, indicating IBM is pursuing the same chemical depolymerization route rather than a differentiated approach. Its 3 families recorded in the applicant ranking, together with co-filings through its UK and Chinese affiliates, suggest a coordinated multi-entity filing strategy.
patent families: 3| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| International Business Machines Corporation | 4 | ▲ new entrant |
| Apani Systems Inc | 4 | ▲ new entrant |
| Teknologian tutkimuskeskus VTT Oy (VTT Finland) | 2 | ▲ new entrant |
| University College Cork, National University of Ireland Cork | 2 | ▲ new entrant |
| Hybridworks Chemical LLC | 2 | ▲ new entrant |
Under-served branches adjacent to the dominant chemistry core
Several IPC branches appear at the margins of the current corpus and represent areas where the existing patent thicket is thinner; they are observations of relative sparsity and should be evaluated against technical feasibility and commercial relevance before treating them as investment targets.
D01F · Chemical filament and fibre features
With only 6 records in the corpus, D01F covers the chemical composition and properties of man-made filaments produced from recycled feedstocks — the step downstream of depolymerization. Given that the dominant players focus heavily on the chemistry of breaking down polymers (C08J, C07C) rather than on the re-spinning of recycled monomers into fibers, this branch is comparatively sparse. Apani Systems is the primary filer here, suggesting the route is technically plausible but not yet crowded. An entrant with fiber-spinning expertise and access to recycled monomer feedstocks could find differentiated filing space.
Search this in Eureka →B09B · Solid waste disposal
Only 2 records appear under B09B, which covers the sorting, collection, and pre-processing of solid textile waste before it enters chemical or mechanical recycling streams. This pre-processing layer — including automated sorting, blending, and contamination removal — is a recognized bottleneck in scaling textile recycling, yet it is almost absent from the patent corpus. B07C (postal and object sorting) has 3 records, and together these suggest the front-end of the recycling value chain is an under-served observation area. Technical entry paths could include sensor-based fiber identification, AI-assisted sorting, or contamination removal chemistry.
Search this in Eureka →How leaders differ by technology route
Route coverage across the main technology branches in the current evidence set.
| Player | C08J 11 · Polymer processing & solutions | C07C 67 · Acyclic & carbocyclic compounds | C07C 69 · Acyclic & carbocyclic compounds | B29B 17 · Plastics preparation | C08L 67 · Polymer compositions |
|---|---|---|---|---|---|
| Avantgarde Shanghai Environmental Tech Co Ltd | Strong · 19 | Strong · 15 | Strong · 11 | Absent | Emerging · 3 |
| International Business Machines Corporation | Strong · 11 | Strong · 6 | Emerging · 1 | Absent | Absent |
| Teknologian tutkimuskeskus VTT Oy (VTT Finland) | Strong · 3 | Absent | Absent | Strong · 2 | Absent |
| INEOS US Chemicals Co | Strong · 2 | Moderate · 1 | Moderate · 1 | Absent | Moderate · 1 |
| Apani Systems Inc | Strong · 4 | Absent | Absent | Absent | Absent |
| University College Cork, National University of Ireland Cork | Strong · 2 | Absent | Absent | Strong · 2 | Absent |
| Donghua University | Strong · 1 | Strong · 1 | Strong · 1 | Absent | Absent |
Frequently asked questions
The analysis covers 52 patent families in scope. This is a relatively compact corpus, reflecting either the early-commercial or post-peak nature of the field rather than a broad, mature technology domain.
Avantgarde Shanghai Environmental Tech Co Ltd holds the largest portfolio with 19 patent families, well ahead of the second-ranked applicant, Taclov LLC, which holds 6 patent families.
C08J (polymer processing and solutions) is the dominant IPC branch, followed by C07C (acyclic and carbocyclic compounds). This reflects a field primarily oriented toward chemical depolymerization of synthetic fibers, particularly polyesters, rather than mechanical recycling or fiber re-spinning.
No. The lifecycle stage is characterized as Decline, with annual filings easing back from a peak in 2020. The most recent two filing years appear lower but should be treated as provisional due to publication lag; the overall multi-year trend is still negative relative to the 2020 peak.
The United States leads with 16 records, followed by Europe via the EPO with 11 records and China with 7 records. WIPO PCT filings number 5, with India at 4. Several other jurisdictions — including Brazil, Germany, Japan, and Taiwan — appear with smaller counts.
Yes. IBM (International Business Machines Corporation), Apani Systems Inc, VTT Finland (Teknologian tutkimuskeskus VTT Oy), University College Cork, and Hybridworks Chemical LLC are all identified as new entrants based on their recent filing activity, each with a trend of new entrant in the momentum data.
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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.