Micro-LED In-Situ Epi/PL Mapping Patent Snapshot
The micro-LED in-situ epitaxial and photoluminescence mapping space is extremely concentrated, with a single commercial filer holding the overwhelming majority of patent families and filing activity anchored almost entirely in the United States. The field is small but not dormant — filing spurts in 2020 and 2022 established the foundational corpus, and the most recent period reflects publication lag rather than a structural decline.
ELUX INC commands the field; IIT Hyderabad is the sole challenger
ELUX INC leads the applicant ranking with 8 patent families, accounting for the vast majority of output in this niche. The Indian Institute of Technology Hyderabad holds 1 patent family, making the ranking a two-player list with no mid-tier cohort.
The top five filers collectively represent 100% of the ranked applicants visible in this query’ combined total — an extreme concentration ratio that signals a field still in its formation stage, where a single organization’s strategic choices largely define the direction of disclosed art.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | ELUX INC | 8 | |
| 2 | Indian Institute of Technology Hyderabad | 1 |
ELUX INC’s dominance across semiconductor device classes suggests it has built a coherent IP portfolio around the full workflow of in-situ mapping and selective harvest of emissive elements, rather than isolated point inventions. Any entrant seeking freedom to operate will need to navigate that position carefully.
The most recent 18–24 months of filings are subject to publication lag and likely under-represent actual activity; counts for 2024–2026 should not be read as indicative of a slowdown. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Burst filing in 2020 and 2022 built the corpus; semiconductor devices dominate the IPC mix
Two discrete filing clusters — in 2020 and 2022 — account for essentially all activity, with the technology composition heavily weighted toward semiconductor device classes and a secondary signal in material analysis and testing.
Annual filing trend
Filing activity shows two distinct pulses — 4 families each in 2020 and 2022 — separated by a quiet year. The 2024–2026 period reflects publication lag and should not be interpreted as a sustained lull. The multi-year window shows a 25% recent growth figure, consistent with a field that has not yet reached saturation despite a plateau in annual volume.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (Semiconductor devices) is the visible IPC class, covering all 9 families in the corpus. G01N (Material analysis and testing) appears as a secondary class with 5 records, reflecting the metrology and characterization dimension of in-situ PL mapping. B01L (Lab apparatus) and B32B (Layered products and laminates) each appear once, signalling thin but present adjacent coverage.
↗ 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.
System and method for the selective harvest of emi…
A method is provided for the selective harvest of microLED devices from a carrier substrate. Defect regions are predetermined that include a plurality of adjacent defective microLED devices on a carrier substrate. A solvent-resistant binding material is formed overlying the predetermined defect regions and exposed adhesive is dissolved with an adhesive… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | System and Method for the Selective Harvest of Emi… | 22 |
| 2 | System and Method for the Characterization and Dis… | 13 |
| 3 | System and method for the selective harvest of emi… | 4 |
| 4 | Emissive Element Harvest | 2 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
ELUX INC
ELUX INC holds 8 patent families concentrated in semiconductor device classes H01L 25, H01L 33, and H01L 23, covering multi-chip assemblies, LED structures, and semiconductor packaging respectively. The applicant momentum data classifies ELUX INC as a new entrant on a recent-period basis, reflecting that the bulk of filing activity occurred in two discrete bursts (2020 and 2022) rather than a sustained ramp. The most-cited works in the corpus — covering selective harvest and characterization of emissive elements — align directly with ELUX INC’s disclosed focus areas.
families: 8Indian Institute of Technology Hyderabad
IIT Hyderabad contributes 1 patent family, with technical emphasis in B01L 3 (lab apparatus), G01N 15, and G01N 21 (material analysis and testing — particle characterization and optical methods). This positions the institution at the metrology and characterization instrumentation layer rather than the device fabrication layer where ELUX INC operates. Applicant momentum is classified as new entrant, consistent with a single recent filing.
families: 1Frequently asked questions
The corpus contains 9 patent families. This is a very small and highly specialized niche, with activity concentrated in two filing years (2020 and 2022).
ELUX INC holds 8 of the 9 patent families in the corpus, making it the visible disclosed-art holder. Indian Institute of Technology Hyderabad holds 1 patent family and is the only other applicant on record.
The United States accounts for 8 of the jurisdiction-level records, reflecting ELUX INC’s filing strategy. India accounts for 1 record, corresponding to IIT Hyderabad. Key Micro-LED manufacturing regions — South Korea, Japan, Taiwan, and China — show no filings in this corpus.
H01L (Semiconductor devices) covers all 9 patent records and is the visible class. G01N (Material analysis and testing) appears in 5 records, reflecting the metrology dimension. B01L (Lab apparatus) and B32B (Layered products and laminates) each appear once as adjacent classes.
The evidence indicates the field is at a maturity-adjacent plateau, with annual filings having eased from a 2020 peak. The multi-year recent-window growth remains positive at 25%, so the corpus is still expanding on a broader basis, but it has not shown sustained year-on-year growth.
No co-applicant or joint-filing pairs are detected in the corpus. Both ELUX INC and IIT Hyderabad appear to be filing independently, which is consistent with the early-stage and proprietary nature of the technology, though informal research partnerships outside the patent record cannot be ruled out.
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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.
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