Laser Diode Device Simulation Patent Landscape 2026
Koala Tech Inc leads a concentrated but small field of 58 patent families, with the United States as the dominant filing jurisdiction. The field peaked in 2018 and has since eased, signalling a mature niche where focused entrants can still carve out differentiated positions.
Koala Tech Inc leads a concentrated field with a clear tier gap
Koala Tech Inc holds the top position with 16 patent records, more than double the next-ranked filer Cisco Technology Inc at 7 patent records. Kyushu University (6), Mitsubishi Electric Corp (5), Genesee Valley Innovations LLC (5), Raytheon Co (5), and nLIGHT Inc (5) form a closely bunched second tier.
The top five filers account for 29% of the combined total across the hundred largest filers, indicating moderate concentration: one clear leader, a tight cluster of challengers, and a long tail of single-digit filers including universities, defence primes, and optical-component specialists.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Koala Tech Inc | 16 | |
| 2 | Cisco Technology Inc | 7 | |
| 3 | Kyushu University | 6 | |
| 4 | Mitsubishi Electric Corporation | 5 | |
| 5 | Genesee Valley Innovations LLC | 5 | |
| 6 | Raytheon Company | 5 | |
| 7 | nLIGHT Inc | 5 | |
| 8 | Eastman Kodak Company | 4 | |
| 9 | Wells Fargo Bank NA | 4 | |
| 10 | Oclaro Japan Inc | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Lumentum Japan Inc | 4 | |
| 12 | Sensirion AG | 4 | |
| 13 | The Board of Regents of the University of Oklahoma | 4 | |
| 14 | Comlase | 3 | |
| 15 | NEC Corporation | 3 | |
| 16 | Xerox Corporation | 3 | |
| 17 | Palo Alto Research Center Inc | 3 | |
| 18 | ELECTRONICS & TELECOMM RES INST | 3 | |
| 19 | Yale University | 2 | |
| 20 | Ricoh Co Ltd | 2 |
Koala Tech Inc’s lead, built in collaboration with Kyushu University, reflects a university–industry partnership strategy that has produced the deepest concentration of H01S (laser and stimulated-emission) simulation filings in the corpus.
Filing counts for 2024–2026 are materially under-counted due to standard patent publication lags of 18–24 months and should not be interpreted as a continuation of the declining trend. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity peaked in 2018 and the technology mix is heavily concentrated in H01S
The annual filing trend and the IPC technology composition together reveal a field that burst briefly in 2018, settled at a lower but sustained level through 2021–2023, and remains dominated by core laser-physics classification. Adjacent branches are sparse but present.
Annual filing trend
Filings surged to 19 in 2018, fell sharply in 2019–2020, recovered partially to 10 in 2021, and have settled at 7 per year in 2022–2023. The 2024–2026 bars are severely under-counted due to publication lag and do not reflect actual activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01S (Lasers and stimulated emission) accounts for the large majority of IPC records at 125, confirming that simulation work is tightly anchored to core laser physics. B41J (typewriters and printers) and G02B (optical elements and systems) each appear at 12, pointing to laser-printer and beam-optics adjacencies. H01L (semiconductor devices) at 8 and G02F (optical control and modulation) at 6 represent thinner but structurally logical extensions.
↗ 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.
Continuous-wave organic thin-film distributed feed…
Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Thermally conductive coatings for light emitting d… | 182 |
| 2 | Mounting technology for intersubband light emitters | 106 |
| 3 | Laser printer utilizing a spatial light modulator | 58 |
| 4 | Laser printer utilizing a spatial light modulator | 49 |
| 5 | Laser diode arrays with reduced heat induced strai… | 40 |
| 6 | Semiconductor laser device | 36 |
| 7 | Semiconductor laser device | 29 |
| 8 | High temperature semiconductor diode laser | 27 |
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
Four structural observations — maturity stage, concentration pattern, collaboration network, and geographic footprint — shape the risk-return calculus for any new entrant or incumbent seeking to extend coverage.
Decline stage: annual volume has eased from the 2018 peak
The lifecycle evidence classifies this field as Decline, with annual filings easing back from the 2018 peak of 19. For R&D teams, this signals that foundational simulation methods are well-covered and that incremental improvements to core H01S approaches face a crowded prior-art landscape. Differentiation now depends on combining simulation with adjacent domains or targeting specific device architectures not yet extensively patented.
Lifecycle: DeclineOne clear leader, a bunched second tier, and a long tail
Koala Tech Inc’s lead at 16 patent records is substantial relative to a field of 58 families, but the five-filer share of 29% across the top-100 filers is moderate rather than monopolistic. The second tier — Cisco, Kyushu University, Mitsubishi Electric, Genesee Valley Innovations, Raytheon, and nLIGHT, all within the 5–7 record range — is closely packed, meaning the ranking is contestable with a targeted filing campaign. Universities (Kyushu, Oklahoma, Yale) hold meaningful positions alongside commercial entities.
Concentration: moderateTwo active co-filing pairs anchor the ecosystem
The strongest co-filing relationship is between Kyushu University and Koala Tech Inc, with 10 joint filings — the foundation of Koala Tech’s market-leading position. The second active pair is Oclaro Japan Inc and Hitachi Ltd, with 7 joint filings, reflecting the optical-component integration angle. These two partnerships account for a disproportionate share of the corpus and suggest that new entrants may need university or systems-integrator partnerships to build filing depth efficiently.
Collaboration: 2 active pairsUS-dominant filing with limited Asia and Europe coverage
The United States is the primary filing jurisdiction with 76 patent records, followed by Europe (EPO) at 25 and WIPO (PCT) at 14. Japan, despite hosting several leading applicants, shows only 7 records, and China appears at just 1 record. This geographic skew suggests that freedom-to-operate in Asia-Pacific markets may be relatively open and that a targeted filing strategy in Japan or China could establish blocking or licensing positions with limited competition.
Geography: US-ledGo 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 |
|---|---|---|
| Kyushu University | Koala Tech Inc | 10 |
| Oclaro Japan Inc | Hitachi Ltd | 7 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Koala Tech Inc leads via university partnership; Cisco and Raytheon pursue application-layer routes
The top two players illustrate contrasting strategies: Koala Tech Inc built its position through deep academic co-development, while Cisco Technology Inc applies laser diode simulation to photonic integration for networking.
Koala Tech Inc
Koala Tech Inc holds 16 patent records, the largest share in the corpus, built almost entirely within H01S 5 (semiconductor lasers, 10 records) and H01S 3 (gas/other lasers, 4 records). Its position was established through a 10-filing co-development relationship with Kyushu University. Momentum data classifies the company as a new entrant whose recent-period filings (6 records) represent its entire known history in this area, indicating a rapidly built, focused portfolio rather than a legacy accumulation.
patent records: 16Cisco Technology Inc
Cisco Technology Inc holds 7 patent records concentrated in H01S 5 (7 records) with secondary coverage in H05K 1 (printed circuits and assemblies, 2 records), reflecting an application focus on photonic integration in networking hardware. Cisco’s presence alongside defence (Raytheon) and optical-component (nLIGHT, Oclaro) players illustrates that simulation IP in this field serves heterogeneous end markets rather than a single vertical.
patent records: 7| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Kyushu University | 6 | ▲ new entrant |
| Palo Alto Research Center Inc | 3 | ▲ new entrant |
| Koala Tech Inc | 6 | ▲ new entrant |
Under-served adjacent branches in optics, printing, and semiconductor integration
Several IPC branches appear in the corpus at low counts relative to the dominant H01S class, suggesting areas where simulation-specific patent coverage is sparse. These are observations of relative sparsity; they represent potential entry paths only where technical and commercial rationale is also present.
G02B · Optical elements and systems
G02B appears at 12 patent records and 6% share among the top branches, covering beam-shaping, coupling, and waveguide interactions critical to laser diode simulation. Despite being technically central to device performance modelling, filing depth here is thin relative to H01S. Raytheon Co has the clearest G02B emphasis among top filers (4 records), leaving room for entrants focused on simulation of free-space or fibre-coupled diode arrays to establish differentiated positions. The entry path is most direct for teams already active in photonic integrated circuit (PIC) modelling.
Search this in Eureka →H01L · Semiconductor devices
H01L appears at 8 patent records and 4% share, covering the semiconductor device physics underpinning laser diode heterostructures, contacts, and epitaxial layers. Simulation of these layers — carrier transport, thermal effects, and strain — is foundational yet sparsely patented in this corpus. Oclaro Japan and Hitachi Ltd each carry one H01L record, but no filer has built a concentrated position here. Teams with expertise in TCAD-level simulation of III-V compound semiconductors face limited prior art and a realistic path to establishing blocking coverage.
Search this in Eureka →How leaders differ by IPC technology route
Route coverage across the main technology branches in the current evidence set.
| Player | H01S 5 · Lasers & stimulated emission | H01S 3 · Lasers & stimulated emission | B41J 2 · Typewriters & printers | G02B 6 · Optical elements & systems | G02F 1 · Optical control & modulation |
|---|---|---|---|---|---|
| Kyushu University | Strong · 18 | Moderate · 6 | Absent | Absent | Absent |
| Palo Alto Research Center Inc | Strong · 11 | Absent | Strong · 7 | Absent | Absent |
| Koala Tech Inc | Strong · 10 | Moderate · 4 | Absent | Absent | Absent |
| Raytheon Company | Strong · 5 | Strong · 5 | Absent | Strong · 4 | Absent |
| Eastman Kodak Company | Strong · 4 | Absent | Strong · 4 | Absent | Strong · 4 |
| Oclaro Japan Inc | Strong · 9 | Absent | Absent | Absent | Absent |
| Hitachi Ltd | Strong · 8 | Absent | Absent | Emerging · 1 | Absent |
Frequently asked questions
The corpus covers 58 patent families in scope. The applicant ranking is drawn from the top 100 filers measured by patent records, with Koala Tech Inc leading at 16 patent records.
Koala Tech Inc (Japan) holds the leading position with 16 patent records, built predominantly through a co-development partnership with Kyushu University that produced 10 joint filings. Cisco Technology Inc is the next-ranked commercial filer at 7 patent records.
Filing activity peaked in 2018 at 19 filings and has since eased, placing the field in a Decline lifecycle stage. The multi-year window shows a recent-growth figure of -21%. Note that 2024–2026 data is materially under-counted due to publication lag, so the most recent bars in the trend chart should not be read as the terminal trajectory.
The United States is the primary jurisdiction with 76 patent records, followed by Europe (EPO) at 25 and WIPO (PCT) at 14. Japan holds 7 records despite several Japanese applicants being top filers, and China holds only 1 record, suggesting relatively open freedom-to-operate in the Asia-Pacific market.
G02B (optical elements and systems) at 12 records and H01L (semiconductor devices) at 8 records are the most technically adjacent yet sparsely filed branches relative to the dominant H01S class at 125 records. G02F (optical control and modulation) at 6 records is also thin relative to its technical relevance to laser diode modelling.
Two co-filing pairs are active. Kyushu University and Koala Tech Inc have produced 10 joint filings, anchoring the market leader’s portfolio. Oclaro Japan Inc and Hitachi Ltd have produced 7 joint filings, reflecting an optical-component integration angle. New entrants may benefit from similar university or systems-integrator partnerships to build filing depth efficiently.
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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.
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