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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/stereolithography-advanced-materials-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Additive ManufacturingStereolithography advanced materials patents: who is filing, and where the claim space is still open
- Filing already peaked and is fading. 2017 recorded the most activity at 5 families; by the 2022 midpoint filing had dropped to 1, with no rebound visible in the data through 2026.
- No assignee is compounding a position. Every tracked assignee shows zero filings in the latest year, and the field spans 18 total families with almost no repeat co-filing — this is a fragmented, single-shot filer landscape, not a concentrated one.
- Dental and bio-ceramic resin chemistry is the newest entry point. A 2026 filing on 3D-printed bone graft resin (calcium-phosphate ceramic in a photocurable matrix) shows the claim frontier has moved into biomedical composite formulations, away from the foaming-resin work that dominates the citation table.
18
Published Records
61%
Top-5 Share of All Records
-100%
3-Yr Growth (lag-adjusted)
US
Leading Jurisdiction
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This review tracks patent families at the intersection of vat photopolymerization and advanced resin chemistry — ceramic-filled resins, high-toughness photopolymers, composite resins and functional photopolymer formulations claimed alongside stereolithography or SLA processing. The search combines process language with material composition language and constrains results to additive-manufacturing and polymer-chemistry IPC classes, so it captures resin-formulation claims rather than general 3D-printer hardware.
Coverage runs from 2015 through the 2026-07-31 data cut-off. Publication typically lags filing by around 18 months, so counts for the most recent one to two years will understate actual filing activity once later applications publish.
Filing activity by year
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The data
Filing trend and technology composition
Eighteen published families sit inside this search, spread thinly across a decade rather than clustered around a single wave of investment.
A single early peak, then decline
Filing activity peaked in 2017 at 5 families and had fallen to 1 by the 2022 midpoint. Nothing in the dataset points to a renewed filing wave through the 2026 cut-off, though the final one to two years are still filling in as applications publish.
Additive manufacturing plus polymer additive chemistry
Every record sits in B33Y (additive manufacturing), with B29C (shaping of plastics) close behind at 11 of 18. Polymer-additive classes C08K and C08L appear at single-digit counts, and dentistry-specific class A61C shows up twice — a small but real signal that oral and biomedical applications are a distinct sub-thread rather than an afterthought.
Shares are the percentage of the 18 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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The records other filings cite
Representative recent filing
3D printed bone graft via vat photopolymerization of a ceramic-filled resin
UNIVERSITAT POLITECNICA DE CATALUNYA
The application describes producing a 3D-printed bone graft by mixing a photocurable biocompatible polymer resin with a hydrolysable calcium phosphate ceramic, printing it through vat photopolymerization, then rinsing and consolidating the part before use.Filed by Universitat Politecnica de Catalunya, published 2026-05-15.
Most-cited records in this landscape
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20180162052A1 | Additive manufacturing using foaming radiation-curable resin | 21 |
| 2 | WO2018106977A1 | Additive manufacturing using foaming radiation-curable resin | 18 |
| 3 | CN107057332A | 一种可控性好的3D打印超材料及其制备方法 | 7 |
| 4 | CN114891165A | 一种用于立体光固化成型打印的压电复合光敏树脂材料及其制备方法与应用 | 4 |
| 5 | WO2022098302A1 | Resin circulation system for homogeneous composite additive manufacturing | 2 |
| 6 | US11738511B2 | Additive manufacturing using foaming radiation-curable resin | 1 |
Citation counts reflect influence within this searched corpus and skew toward older records; they are not a measure 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. Publication numbers are shown where the record carries one (6 of 6 rows); clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
Three patterns matter more than the headline counts: the timing of the peak, the concentration of citations in one invention family, and the near-total absence of repeat filers.
Filing trend
Peak 2017 at 5, midpoint 2022 at 1
families per year
The wave has already passed
Activity peaked in 2017 and declined through the 2022 midpoint with no recovery visible in the dataset. A declining trend in a still-small field (18 families total) suggests either the early formulations solved the immediate problem or the commercial case narrowed rather than broadened.
Based on published filing years through the 2026-07-31 cut-off.
Citation concentration
21 and 18 citations on one invention pair
top-cited records
One foaming-resin family dominates influence
The two most-cited records in the corpus (US20180162052A1 and its WO counterpart) both cover additive manufacturing with a foaming radiation-curable resin, at citation counts well above the rest of the table. Later filers are building on, or designing around, this specific mechanism.
Citation counts favour older, earlier-published records.
Assignee behaviour
0 filings in the latest year, across every tracked assignee
recent-year momentum
No one is currently active
Every assignee surfaced in the recent-momentum data — spanning dental, ceramics, and individual inventor filers — shows zero activity in the latest tracked year. Co-filing is also rare, with only two co-assignee pairs across the whole set, each appearing once.
Momentum measured against the most recent full filing year in the dataset.
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Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
A fragmented field with no repeat filer
With 18 families spread across dental equipment makers, ceramics researchers, individual inventors and university labs, this landscape has no dominant assignee to track — it is better read as a set of isolated technical bets.
Dental and prosthodontic filers
A61C classes present in 2 of 18 records
oral-application share
Dental resin chemistry is a small, distinct thread
Filers with dental-equipment backgrounds appear in the assignee set alongside general additive-manufacturing players, but their filings sit in a narrow slice of the corpus tied to A61C classification.
Compare against the broader B33Y/B29C base classes.
University and research-institute filers
2 co-assignee pairs total
collaboration rate
Collaboration is the exception, not the norm
Only two co-assignee pairs appear across the entire dataset, one pairing a materials-technology firm with a ceramics research institute, the other a university with a hydropower development company — an unusual combination suggesting a funding or infrastructure link rather than a shared technical roadmap.
Co-filing counted at the family level.
Individual inventors and small entities
18 total families, 0 latest-year filings
field size
No assignee is building a portfolio
Named individual filers sit alongside corporate assignees in the recent-momentum list, each contributing isolated filings rather than a sustained program. The absence of any assignee with continuing recent activity is itself the finding: this is not a field with an incumbent to watch.
Recent momentum reflects the latest tracked filing year.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Dentsply Sirona | 0 | — |
| PEARLSON MATTHEW NOAH | 0 | — |
| Shenzhen Yongchanghe Technology Co., Ltd. | 0 | — |
| Tokuyama Dental Corporation | 0 | — |
| IGNEOUS IP HLDG LLC | 0 | — |
| SG Advanced Materials | 0 | — |
| Chongqing University | 0 | -100% |
| Ceramic Research Institute | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this
The dataset points to two practical next steps: confirm whether the decline is real or a publication-lag artefact, and check the open branches before drafting new claims.
Watch the two most recent filing years closely
Because publication lags filing by around 18 months, the apparent decline toward 2026 needs re-checking once later applications publish. Re-run the trend query in six to twelve months before concluding the field is inactive.
Explore filing trends in EurekaMap the foaming-resin citation cluster before filing nearby
The two top-cited records both cover foaming radiation-curable resin for additive manufacturing. Any new formulation claim touching foamed or expanding photopolymer chemistry should be checked against this pair first.
Run a citation map in EurekaAssess the bioceramic and dental branches for freedom to operate
Bone-graft and dental resin formulations are a small but active-looking niche within an otherwise declining field. A targeted freedom-to-operate check here is cheaper than in the crowded base additive-manufacturing classes.
Check freedom to operate in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on this landscape
This landscape tracks 18 published patent families matching stereolithography and vat photopolymerization process claims combined with advanced resin composition language, covering 2015 through the 2026-07-31 data cut-off. That is a small, specialised corpus rather than a broad technology field, so individual filings carry more weight than they would in a larger dataset. Because publication lags filing by roughly 18 months, the true count for 2025 and 2026 will be higher once pending applications publish.
The trend is declining. Filing peaked in 2017 at 5 families in a single year, dropped to 1 family by the 2022 midpoint, and shows no recovery through the available data. This does not necessarily mean commercial interest has disappeared, since the most recent one to two years are understated by publication lag, but the multi-year downward trend predates that lag effect and looks genuine.
No single company holds a dominant or growing position in this dataset. Every assignee tracked for recent-year momentum, spanning dental equipment makers, ceramics researchers, and individual inventors, shows zero filings in the latest year, and co-filing between assignees appears in only two pairs across the whole 18-family set. Readers looking for an incumbent to monitor should instead track the two most-cited invention families, which carry more citation influence than any single assignee carries filing volume.
WO2026099327A1, filed by Universitat Politecnica de Catalunya and published 2026-05-15, claims a method for producing a 3D-printed bone graft: mixing a photocurable biocompatible polymer resin with a hydrolysable calcium phosphate ceramic, printing it by vat photopolymerization, then rinsing and consolidating the part. Anyone formulating a calcium-phosphate or similar hydrolysable ceramic-filled photocurable resin for bone-graft printing should review this claim set closely before filing nearby, since it covers both the composition mixing step and the downstream consolidation process. It does not appear to block ceramic-filled resins for non-bone-graft, non-biomedical applications, which sit outside its stated use.
The IPC composition shows heavy concentration in base additive-manufacturing (B33Y) and plastics-shaping (B29C) classes, with much thinner coverage in polymer-additive chemistry (C08K, C08L) and almost none in adhesives (C09J) despite clear technical overlap with photocurable resin systems. Piezoelectric composite photosensitive resins and resin-circulation systems for uniform composite feedstock also show only isolated filings rather than a developed claim cluster. Both are plausible entry points for a first claim, since the base process classes are already occupied but the specific material-function combinations are not.
Answers are grounded in the same dataset. Derived from a Patsnap search on Stereolithography Advanced Materials covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.