Fiber Laser Patents: Who Leads as Filings Plateau 2026
- Filings have plateaued, not grown. Annual filings ran from 144 in 2017 to a peak of 151 in 2022, then declined toward a partial 2026 count — a flat-to-declining curve, not the ramp the 'scale-up' framing might suggest.
- Claim density sits overwhelmingly in H01S. 1,386 of 2,196 records classify under H01S (lasers & stimulated emission), with G02B optics a distant second at 761 — welding (B23K, 151) and powder metallurgy (B22F, 56) are comparatively open.
- Momentum has stalled even among named leaders. Tracked assignees show 0% or negative year-on-year filing momentum in the latest year, including a -100% YoY drop for IPG Photonics — a sign the field's most active filers have slowed, not just newcomers.
Filing growth compares 2021 (140 records) with 2024 (72) — 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 2,196 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent families addressing fiber laser power scaling and volume manufacturing — claims that combine fiber or fibre-based laser architectures with power-scaling techniques, or with the mechanics of moving a laser design from lab prototype into volume production. The search spans records published between 2015 and mid-2026, with 2,196 total published records forming the basis of the assignee ranking and technology composition below.
Publication typically lags filing by around 18 months, so the most recent year in the trend chart is always undercounted relative to where it will eventually settle. Readers should treat the last one to two years of any chart here as a floor, not a final figure.
Filing trend and technology composition
Two views of the same dataset: how filing volume has moved year over year, and how the 2,196 records split across IPC subclasses.
Filings peaked in 2022, then fell back
Annual filings ran 144 in 2017 up to a peak of 151 in 2022, before declining toward a partial count of 4 in 2026. Given the 2026 figure is a partial year, the real signal is that the field plateaued around 2020-2022 rather than continuing to expand — filing behaviour consistent with an established, contested technology rather than an emerging one.
H01S dominates; welding and powder metallurgy remain thin
H01S (lasers & stimulated emission) accounts for 1,386 of 2,196 records, with G02B (optical elements & systems) second at 761. G01S (positioning/radar applications), G02F (optical modulation) and B23K (welding) follow at meaningfully lower counts, while C03B (glass shaping), B29C (plastics shaping) and B22F (powder metallurgy) sit under 70 records each — these downstream manufacturing-integration classes are where claim density is lowest relative to the core laser physics.
Shares are the percentage of the 2,196 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Fiber Laser Scale-Up and Mass Production with Eureka
This page is one run against one query. Ask Eureka your own question about fiber laser scale-up and mass production and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
WO2008074359A1 — Optical fibre laser (Fraunhofer-Gesellschaft)
The invention relates to a fibre laser for generating ultra-short pulses. According to the invention, the fibre laser comprises a resonant cavity including a doped optical fibre (F) as an amplifier medium and at least one dispersive element (G1, G2, D) with anomalous group velocity dispersion (GVD), the fibre (F) and the at least one dispersion element (G1, G2, D) being arranged in the optical path inside the laser cavity, whereby the optical fibre (F) is a rare-earth-doped optical large-mode-area (LMA) fibre having a normal GVD.Filed by a public research institute rather than a commercial laser maker — a pattern worth checking when assessing freedom-to-operate, since research-origin patents are sometimes licensed broadly rather than asserted.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6212310B1 | High power fiber gain media system achieved through power scaling via multiplexing | 357 |
| 2 | US20030156605A1 | Pulsed light sources | 273 |
| 3 | US20030063884A1 | Power scalable optical systems for generating, transporting, and delivering high power, high quality, laser b… | 239 |
| 4 | US20170120337A1 | Methods and Systems for Coherent Imaging and Feedback Control for Modification of Materials | 231 |
| 5 | US20140009822A1 | Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers | 228 |
| 6 | US8213758B2 | Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers | 223 |
| 7 | WO2014145862A2 | Spun non-circular and non-elliptical fibers and apparatuses utilizing the same | 219 |
| 8 | US8542968B2 | Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers | 219 |
| 9 | US20070239232A1 | Light guide based light therapy device | 192 |
| 10 | US20150080495A1 | Surface modified particulate and sintered or injection molded products | 169 |
Citation counts favour older filings simply by virtue of having had longer to accumulate citations within this corpus — read them as a signal of influence on the field's vocabulary, not of current commercial relevance.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns stand out once the raw counts are put next to each other.
Core laser-cavity claims are the densest prior art
Nearly two-thirds of all records sit in H01S. Any new filing on cavity design, doping, or amplifier architecture is entering the most heavily claimed territory in this dataset, not a gap.
The filing curve has already turned over
A field that peaked in 2022 and is declining into 2026 is not accelerating toward mass production claims — it suggests the core architectural questions were largely staked out by the early 2020s.
US filings dominate the office split
The United States receives more than double the filings of the EPO and slightly more than PCT (WIPO) filings, suggesting most applicants treat the US as the primary market before deciding on wider international coverage.
Downstream manufacturing classes remain thin
Welding (B23K), glass shaping (C03B), plastics shaping (B29C) and powder metallurgy (B22F) — the classes that describe actually integrating a fiber laser into a production line — each sit under 160 records, far below the core laser-physics classes.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fiber laser scale-up and mass production, with the prior art for and against each one.
Who is filing, and how much runway is left
Momentum has cooled across the named assignees tracked in the latest year, even as a handful of co-filing relationships show sustained technical collaboration.
IPG Photonics filings dropped to zero in the latest year
IPG Photonics, one of the more active co-filers in this corpus, shows a -100% year-on-year change with 0 filings in the latest tracked year — consistent with the broader plateau in the filing trend.
IPG Photonics anchors the strongest co-assignee pairs
The strongest co-assignee relationships in this dataset — each with 8 shared filings — all involve IPG Photonics paired with individual named inventors, pointing to a small, stable inventor team behind a large share of that portfolio.
Several named assignees show no filings in the latest year
Beyond IPG Photonics, other tracked assignees — including firms active in defence optics and industrial lasers — show zero filings in the most recent year, though the partial-year data cutoff means this understates true 2026 activity.
| Assignee | Recent year | YoY |
|---|---|---|
| Elbit Systems Electro-Optics Elop Ltd. | 1 | -50% |
| IPG Photonics Corporation | 0 | -100% |
| Tudatong (Seyond) Intelligent USA Ltd. | 0 | — |
| nLIGHT, Inc. | 0 | — |
| Raytheon Company | 0 | — |
| Rafael Advanced Defense Systems Ltd. | 0 | — |
| KLA Corporation | 0 | — |
| IMRA America, Inc. | 0 | — |
Where to take this analysis
The dataset points to a mature core and a thinner manufacturing-integration layer around it. Two directions follow from that.
Stress-test a specific claim against the cited prior art
The most-cited records in this corpus, including the power-scaling and rare-earth-doped fiber families, define the vocabulary the rest of the field builds on. Any new filing on cavity or amplifier design should be checked against them directly.
Explore in EurekaMap the under-claimed manufacturing classes in detail
B23K, C03B, B29C and B22F each show comparatively low filing density relative to H01S. A closer read of what specific claims exist there — versus what is genuinely open — is a faster way to find defensible ground than filing into the crowded laser-cavity space.
Explore in EurekaCommon questions about this landscape
Patent filing activity and market growth are not the same signal. This dataset shows filings peaking at 151 in 2022 and falling toward a partial count of 4 in 2026, which more likely reflects that the core architectural and power-scaling questions were substantially claimed by the early 2020s, so new entrants have less unclaimed cavity or amplifier design space to file on. Publication also lags filing by roughly 18 months, so the 2025-2026 figures will rise somewhat as later filings publish, but the multi-year downward trend from the 2022 peak predates that lag effect. A shrinking filing curve alongside a growing market is a normal pattern once the foundational claims in a field have already been staked out by early movers.
The dataset tracks recent-year momentum for a set of named assignees including IPG Photonics, along with firms active in defence electro-optics and industrial laser systems. IPG Photonics shows the strongest co-assignee relationships in the corpus, each involving 8 shared filings with named individual inventors, suggesting a concentrated internal R&D team. However, several of these same assignees, including IPG Photonics, show zero or negative filing momentum in the most recent tracked year, so 'most active historically' and 'most active now' are not the same list.
H01S covers lasers and stimulated-emission devices themselves — cavity design, doping, amplifier architecture — and accounts for 1,386 of the 2,196 records in this landscape, making it the densest classification by far. B23K covers welding, soldering and brazing, and in this context captures patents on integrating a fiber laser into a welding or material-processing production line rather than the laser source itself; it holds only 151 records. A claim drafted purely on beam delivery or laser-to-workpiece integration for welding sits in much less crowded prior art than a claim on the laser cavity or gain medium.
Relative to the 1,386 records in core laser-cavity classification (H01S), the manufacturing-integration classes are thin: welding integration (B23K) has 151 records, glass-draw shaping (C03B) has 67, plastics-shaping laser heads (B29C) have 63, and powder-bed fusion coupling (B22F) has just 56. These are not zero-filing gaps, but they are materially less contested than the physics of the laser itself, making claims on production-line integration, process control, or quality assurance during volume manufacture a more defensible place to file than another cavity-design variant.
Not necessarily. Citation counts inside a fixed patent corpus accumulate over time, so older filings such as the power-scaling and rare-earth-doped fiber patents in this dataset have simply had more years to be cited than recent filings, regardless of their current commercial standing. A high citation count is a better signal of a patent's influence on how the field's claims are worded than of whether the underlying technology is still the state of the art. Freedom-to-operate analysis should weight claim scope and current assignee enforcement behaviour more heavily than raw citation counts.
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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.