Fiber Laser Semiconductor Laser Patents: Leaders & White Space 2026
- Filing has plateaued, not accelerated. activity peaked in 2020 at 42 filings and the 2022 midpoint of 33 shows a flat-to-declining trend rather than a growth curve.
- The core IPC class dwarfs its neighbours. H01S covers all 638 families while the next-largest adjacent class, G02B, appears in only 119 — most claim pressure sits inside lasers themselves, not the surrounding optics.
- The most-cited prior art is decades old. the top-cited record, US4815079A, still anchors citation counts at 410 — a sign of foundational influence, not of where current filers are active.
What this landscape covers
This dataset tracks 638 patent families filed between 2015 and the 2026 cut-off, searched against titles and abstracts for fiber or fibre laser systems combined with claim language on pump laser diodes, seed lasers, diode-pumped fiber lasers or semiconductor pump sources. The IPC scope centres on H01S3/067, H01S5/00 and H01S3/094 — the classes covering fiber laser gain media, semiconductor lasers generally, and pumping arrangements specifically.
Filing offices skew toward the United States and Europe, with China close behind and a smaller WIPO/PCT and Japan tail. Because publication typically lags filing by around 18 months, the most recent year in the trend understates real activity and should be read as a floor, not a ceiling.
Filing trend and technology mix
Two views of the same 638 families: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A decade of flat-to-declining filings
Filings ran at 32 in 2017, rose to a peak of 42 in 2020, then eased back toward the 2022 midpoint of 33. That shape reads as a mature filing base rather than an emerging one — most of the foundational claim space was staked out earlier in the window, and later years show consolidation rather than a land grab.
H01S dominates; the adjacent classes are thinner
Every family in this set touches H01S (lasers and stimulated emission), which is expected given the search scope. What matters is the drop-off outside it: G02B (optical elements) and G02F (optical modulation) each cover well under a fifth of the corpus, and specialised end-use classes like B23K (welding) and G01S (positioning) are thinner still. Claim activity is concentrated in the laser architecture itself rather than in application-specific integration.
Shares are the percentage of the 638 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Fiber Laser Semiconductor Laser with Eureka
This page is one run against one query. Ask Eureka your own question about fiber laser semiconductor laser and every answer comes back with the patent numbers behind it.
Try EurekaThe prior art that everything else cites
Fiber laser with free-space components (US10003168B1)
A laser system pairs a seed laser diode and a pump laser diode, each collimated through its own lens, and combines both free-space beams through an optical-beam combiner before focusing the combined beam into an optical gain fiber. The architecture keeps the seed and pump paths separate and free-space until the combiner, rather than fiber-coupling either diode directly.Filed by Microvision, Inc.; granted 2018-06-19.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4815079A | Optical fiber lasers and amplifiers | 410 |
| 2 | US6324326B1 | Tapered fiber laser | 275 |
| 3 | US10003168B1 | Fiber laser with free-space components | 149 |
| 4 | US5530709A | Double-clad upconversion fiber laser | 142 |
| 5 | US5677920A | Upconversion fiber laser | 106 |
| 6 | US20130033742A1 | Very high power pulsed fiber laser | 101 |
| 7 | US20030063629A1 | Multimode fiber laser gratings | 92 |
| 8 | US6987783B2 | Three-level air-clad rare-earth doped fiber laser/amplifier | 84 |
| 9 | EP0320990A2 | Optical fiber lasers and amplifiers | 84 |
| 10 | US6888853B1 | Laser radiation source | 81 |
Citation counts are drawn from a searched corpus and favour older filings; treat them as a measure of influence on later claim drafting, not as a signal of which technology is currently active.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three findings that change where a new filing should — or should not — be aimed.
The growth phase is behind, not ahead
Volume climbed from 32 filings in 2017 to a peak of 42 in 2020, then settled back to 33 at the 2022 midpoint. A filer entering now is working in a space where the core architecture claims were staked out several years ago; freshness in this art means specific implementation detail, not broad system claims.
Claim pressure sits in the laser, not the optics chain
Every record touches H01S; the next-largest adjacent class, G02B for optical elements and systems, covers under a fifth as many records. Integration claims — how the fiber laser connects to downstream optics or delivery systems — are comparatively less crowded than the core gain-medium and pump-architecture claims.
Foundational patents still anchor the field
US4815079A, covering optical fiber lasers and amplifiers, carries 410 citations — far ahead of anything filed in the last decade. That weight reflects decades of accumulated citing activity, not present-day relevance; newer filers should expect their own citation counts to look thin by comparison for years.
US remains the primary filing venue, China is closing distance
United States filings lead at 198, with Europe at 138 and China at 123 — a narrower gap than many photonics landscapes show. A filer optimising for defensive coverage in this art needs at least a two-jurisdiction strategy across the US and China rather than relying on US filings alone.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fiber laser semiconductor laser, with the prior art for and against each one.
The assignee landscape
Filing activity clusters around a small set of established fiber laser manufacturers and research institutes, with co-assignee relationships pointing to close inventor-company pairings rather than broad industry consortia.
Two individual inventors sit inside the top corporate filer's own filings
The strongest co-assignee pairs in this dataset link IPG Photonics with named inventors Igor Samartsev and Valentin Gapontsev, each appearing together 6-9 times. That pattern indicates founder-inventor filings rather than external collaboration — a structural feature to note when assessing inventorship disputes or licensing leverage.
Every major assignee shows zero filings in the most recent year
IPG Photonics, Fujikura, Corning, OFS Fitel, Nufern and GSI Group all register zero filings in the latest tracked year. Given the 18-month publication lag, this is expected rather than alarming — but it also means the most recent competitive signal from these six names has not yet surfaced.
A moderate-sized, mature corpus with an established core group
At 638 total families, this is a moderate-depth field where the leading assignees have filed consistently across the window rather than in a single burst. New entrants are filing into a landscape where the core players' architecture claims are already on record.
| Assignee | Recent year | YoY |
|---|---|---|
| IPG Photonics Corporation | 0 | — |
| Fujikura Ltd. | 0 | — |
| Corning Incorporated | 0 | — |
| OFS Fitel, LLC | 0 | — |
| Nufern | 0 | — |
| GSI Group Inc. | 0 | — |
| GAPONTSEV VALENTIN | 0 | — |
| SAMARTSEV IGOR | 0 | — |
Where to take this
Use the trend and assignee data as a starting point, not an endpoint — the next step is usually a claim-level read of the records that sit closest to a planned filing.
Run a freedom-to-operate check on the pump-combiner architecture
The seed/pump free-space combiner pattern behind US10003168B1 recurs across several top-cited records; a claim chart against that specific architecture is worth the hour before drafting.
Open Eureka to chart this claimTrack the zero-filing assignees for a publication catch-up
Six leading assignees show no filings in the latest year, which is more likely a publication-lag artifact than a slowdown; re-check this cohort in six months.
Set a watch in EurekaMap the China filing gap before it closes further
China's 123 filings trail the US's 198 by a narrower margin than in many photonics fields; assess whether your own filings need China coverage now rather than after the gap closes.
Explore jurisdiction coverage in EurekaCommon questions about fiber laser and pump diode patents
The assignee ranking in this dataset is led by established fiber laser manufacturers and research institutes rather than a single dominant filer. IPG Photonics appears repeatedly, including in co-assignee filings alongside named inventors Igor Samartsev and Valentin Gapontsev, which points to founder-level inventorship within that company's own portfolio. Other recurring names include Fujikura, Corning, OFS Fitel, Nufern and GSI Group, all of which show consistent historical filing but zero activity in the most recent tracked year, likely reflecting publication lag rather than an actual pause.
No, filing activity in this corpus has flattened rather than grown. Volume rose from 32 filings in 2017 to a peak of 42 in 2020, then eased back to 33 by the 2022 midpoint, and the most recent tracked year shows zero — though that final figure is understated by the roughly 18-month lag between filing and publication. The overall shape looks like a mature technology area where core architecture claims were established earlier in the window, with later years reflecting incremental refinement rather than a new wave of filings.
The core classification is H01S, covering lasers and stimulated-emission devices, which appears in all 638 families in this dataset by construction of the search. The next most common adjacent classes are G02B (optical elements and systems) at 119 records and G02F (optical control and modulation) at 83, both well below H01S in volume. Smaller but relevant classes include B23K for laser welding applications, G01S for positioning and ranging uses, and C03B for the glass manufacturing processes behind fiber preforms.
US10003168B1, assigned to Microvision, Inc. and granted in 2018, claims a laser system that combines a free-space seed laser diode beam and a free-space pump laser diode beam through an optical-beam combiner before focusing the combined beam into an optical gain fiber. It does not block fiber laser designs generally; it is specific to architectures that keep the seed and pump paths in free space, each with its own collimating lens, until they meet at the combiner. Designs that fiber-couple the pump or seed diode directly, or that use a different combining method, sit outside this particular claim scope, though a formal freedom-to-operate check is the only way to confirm clearance for a specific design.
Based on the IPC composition in this dataset, the thinner adjacent classes — G02F optical modulation, B23K laser welding integration, G01S positioning applications, and C03B glass fiber-draw processes — carry markedly fewer records than the core H01S laser claims. That suggests claim space is more open around how a fiber laser integrates into a delivery, modulation or manufacturing process than around the laser architecture itself. A first claim in this space would likely be narrower and process- or integration-specific rather than a broad system claim, since the broad architectural ground is already well covered by earlier 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.