Fiber Laser Advanced Materials Patents: Who Leads, Where Gaps Are 2026
- Filing has cooled since its 2021 peak. 35 families in 2021 dropped toward flat-to-declining levels through 2022, and every tracked top assignee shows zero filings in the latest year — a sign the core claim space around ytterbium-doped and large-mode-area fiber is largely staked out.
- China and the US file in near-equal volume. 116 records each at the Chinese and US receiving offices, with EPO and PCT filings well behind — this is a two-jurisdiction contest, not a single-hub technology.
- The most-cited art is old and still structural. The highest-cited records date back two decades or more (tapered fiber laser, multipoint sensor, modelocked fiber laser architectures), meaning new entrants are building on foundational claims rather than displacing them.
Filing growth compares 2021 (35 records) with 2024 (10) — 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 368 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks 368 patent families filed between 2017 and mid-2026 that combine fiber laser architecture claims with gain-medium composition claims — ytterbium-doped fiber, large-mode-area fiber, and rare-earth-doped fiber under IPC H01S3/067, C03B37/012 and H01S3/16. The scope deliberately pairs the laser subsystem (H01S) with the fiber material itself, so the corpus captures where optical performance and materials science intersect rather than either domain alone.
Composition by IPC subclass confirms the core is laser physics: all 368 records touch H01S, while a meaningful subset also claims optical elements (G02B, 72 records) and modulation (G02F, 26). A smaller tail of glass composition and shaping claims (C03C, C03B) and medical-adjacent filings (A61B, A61F) shows the technology bleeding into surgical and diagnostic fiber delivery — a signal worth tracking separately from the core laser-materials cluster.
Filing trends and technology composition
Annual filing counts and IPC distribution for the 368 families in this corpus, drawn directly from publication records at CNIPA, USPTO, EPO, WIPO, IP Australia and CIPO.
A single peak year, then a plateau
Filings rose from 15 in 2017 to a peak of 35 in 2021, sat at 26 by the 2022 midpoint, and have trended flat or down since. Because publication lags filing by roughly 18 months, the final one to two years in this trend will revise upward as pending applications publish — but the shape of a peak-then-plateau, rather than continued growth, is already visible in the data before that lag is accounted for.
Laser architecture dominates; glass and medical uses trail
Every record sits in H01S (lasers and stimulated emission), the anchor subclass for this search. Optical elements (G02B) and modulation (G02F) are the largest secondary clusters, confirming that most filings pair a gain-fiber material claim with a specific optical delivery or control mechanism. Glass composition (C03C) and manufacture (C03B) form a smaller, materials-focused tail, and a handful of records extend into surgical (A61B) and implant (A61F) applications — fiber lasers used for delivery rather than generation.
Shares are the percentage of the 368 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Fiber Laser Advanced Materials with Eureka
This page is one run against one query. Ask Eureka your own question about fiber laser advanced materials and every answer comes back with the patent numbers behind it.
Try EurekaFoundational and representative filings
Rare-earth-doped fiber and an optical fiber laser using the same
A rare-earth-doped fiber includes a center core, made of silica glass into which a rare-earth element is doped; a plurality of outer cores; an inner cladding, disposed around the center core and the outer cores; and an outer cladding, disposed around the inner cladding. The refractive index of the inner cladding is less than that of the inner and outer cores, and the refractive index of the outer cladding is less than that of the inner cladding. At least one of the center core and the outer cores is disposed in an area such that the distance between it and the center of the rare-earth-doped fiber should be greater than 0.71r, where r indicates an outer radius of the inner cladding.Filed by Fujikura; illustrates the multi-core, layered-cladding refractive-index profile approach that recurs across this corpus's gain-fiber claims.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6324326B1 | Tapered fiber laser | 275 |
| 2 | US5513913A | Active multipoint fiber laser sensor | 242 |
| 3 | US6072811A | Integrated passively modelocked fiber lasers and method for constructing the same | 235 |
| 4 | US8941912B2 | Ytterbium-doped optical fiber, fiber laser and fiber amplifier | 222 |
| 5 | US8363313B2 | Ytterbium-doped optical fiber, fiber laser, and fiber amplifier | 220 |
| 6 | US5564832A | Birefringent active fiber laser sensor | 176 |
| 7 | US20020172486A1 | Single-polarization high power fiber lasers and amplifiers | 160 |
| 8 | US5689519A | Environmentally stable passively modelocked fiber laser pulse source | 153 |
| 9 | US10003168B1 | Fiber laser with free-space components | 149 |
| 10 | US6288835B1 | Optical amplifiers and light source | 142 |
Citation counts inside this searched corpus favour older filings and should be read as a measure of structural influence, not current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three read-outs from the trend, jurisdiction and citation data that matter more to a filing strategy than the raw counts alone.
The core claim space has stopped expanding
Filings peaked at 35 in 2021 and the 2022 midpoint of 26 already shows the decline underway. Every leading assignee tracked for recent-year momentum shows zero filings in the latest year, which is consistent with either claim-space saturation or a lag in publication rather than an actual pause in R&D.
A two-hub contest, not a single-market technology
China and the United States each carry 116 filings, with the EPO route (65) and PCT (33) trailing well behind. Freedom-to-operate work needs to clear both jurisdictions independently rather than treating one as a proxy for global coverage.
New filings build on old architecture, they don't replace it
The most-cited records in this corpus — tapered fiber laser designs, multipoint fiber sensors, modelocked fiber laser constructions — are decades old. That is partly a citation-count artefact favouring older art, but it also means the structural building blocks of fiber laser gain-medium design were set early and are still the reference point for new claims.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fiber laser advanced materials, with the prior art for and against each one.
Who is filing, and where the field is thinning out
Assignee activity across the corpus shows concentration among a small set of specialist fiber-laser manufacturers and toolmakers, with a long tail of single-filing entrants — and even the most active names show no filings in the most recent year.
Established players have gone quiet on paper
IPG Photonics, Fujikura, Corning, IMRA America and OFS Fitel each show zero filings in the latest tracked year. Given the 18-month publication lag, this likely reflects unpublished pending applications as much as reduced R&D — but it means the visible claim landscape from these leaders is not currently moving.
State and university labs filed in bursts, not steadily
China's National University of Defense Technology shows a full year-on-year drop to zero after earlier activity, a pattern typical of grant-cycle-driven filing rather than continuous commercial development.
Collaboration is limited and concentrated
Only 10 co-assignee pairs exist across the corpus. The strongest is OFS Fitel with Vienna University of Technology (5 shared filings), followed by IPG Photonics paired separately with two named individual inventors (4 shared filings each) — collaboration here is mostly a company-university or company-inventor link, not cross-company joint ventures.
| Assignee | Recent year | YoY |
|---|---|---|
| IMRA America, Inc. | 0 | — |
| Fujikura Ltd. | 0 | — |
| IPG Photonics Corporation | 0 | — |
| Corning Incorporated | 0 | — |
| National University of Defense Technology | 0 | -100% |
| OFS Fitel, LLC | 0 | — |
| Fira Laser Co., Ltd. | 0 | — |
| Shandong Haifu Photonics Technology Co., Ltd. | 0 | — |
Where to take this analysis
The trend and assignee data point to specific next steps depending on whether you are scoping freedom-to-operate or looking for a filing opening.
Check the current-year gap before concluding the field is quiet
Zero recent-year filings across nearly every top assignee is consistent with the 18-month publication lag. Re-run assignee momentum once the next data cut-off passes before treating this as a genuine slowdown.
Explore filing trends in EurekaScope freedom-to-operate in China and the US separately
With 116 filings apiece and no dominant PCT or EPO pattern, a single-jurisdiction FTO search will miss half the relevant art. Treat China and the US as independent clearance exercises.
Run a jurisdiction-specific search in EurekaInvestigate the under-claimed medical-adjacent branch
The small but present A61B/A61F cluster suggests fiber laser delivery for surgical and implant applications is an early-stage, thinly claimed extension of the core gain-fiber technology.
Pull the A61B/A61F subset in EurekaCommon questions on fiber laser materials patents
Filing activity is concentrated among a small group of specialist fiber laser manufacturers and academic labs rather than a single dominant holder. IPG Photonics, Fujikura, Corning, IMRA America and OFS Fitel appear repeatedly across the corpus of 368 families, alongside university and defense-affiliated filers such as Vienna University of Technology. No single assignee accounts for a majority of filings, and a long tail of single-filing entrants makes up a substantial share of the total.
Filings rose from 15 in 2017 to a peak of 35 in 2021, then declined toward the 2022 midpoint of 26 and have stayed flat or fallen since. Every major assignee tracked shows zero filings in the most recent year, though publication typically lags actual filing by around 18 months, so recent years understate true activity. The overall shape — a rise to a peak followed by a plateau — suggests the core claim space is maturing rather than still expanding.
China and the United States are essentially tied as the leading receiving offices, each with 116 filings in this corpus. The European Patent Office follows with 65, and PCT international filings account for 33. Australia and Canada are minor destinations by comparison, with single-digit filing counts, indicating this technology is contested primarily in a two-jurisdiction landscape rather than filed broadly worldwide.
US20040264513A1, filed by Fujikura, claims a rare-earth-doped fiber structure with a center core, multiple outer cores, and an inner and outer cladding arranged with specific refractive-index relationships, including a geometric constraint tying core placement to cladding radius. It does not block all rare-earth-doped fiber work, but any design using a similar multi-core, layered-cladding refractive-index profile with that specific geometric ratio should be checked against its claims. Designs using single-core structures or different refractive-index orderings are more likely to sit outside its scope, though a full claim chart is needed to confirm freedom to operate.
The IPC composition shows most filings concentrated in core laser architecture (H01S) and optical control (G02B, G02F), with comparatively thin coverage in glass composition and shaping claims (C03B, C03C) and in medical-adjacent delivery applications (A61B, A61F). These smaller clusters — particularly surgical and implant use of rare-earth-doped fiber lasers, and specific glass-composition approaches to gain-fiber shaping — represent areas with less dense prior art relative to the crowded core H01S claim space.
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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.