Free-Space Optical Comm Patents: Leaders & White Space 2026
- Filing has flattened, not grown. activity peaked at 8 families in 2019 and sits below that through the most recent full year — this is a maturing claim space, not an accelerating one.
- The US dominates the filing map. 33 of the receiving-office filings sit in the United States against 7 at the EPO and 6 via WIPO, so US prior art carries disproportionate weight in any freedom-to-operate check.
- Influence concentrates in a handful of decades-old records. the most-cited documents date back to 1995–2009 pointing-and-tracking architectures, meaning today's filers are still designing around citation anchors set before 2010.
What this landscape covers
This dataset tracks patent families addressing free-space optical communication design optimization — the engineering problem of holding a laser link open between two moving or vibrating terminals, covering adaptive optics correction, link margin optimization, and pointing accuracy. The search combines free-text terms for laser communication and optical wireless links with IPC codes for optical transmission (H04B10/112, H04B10/118) and optical beam steering (G02B26/08), so it captures the intersection of RF-style link engineering and optical hardware.
55 published families sit inside the 2015-to-2026 window, concentrated overwhelmingly in the H04B transmission subclass with smaller satellite (B64G), multiplexing (H04J) and positioning (G01S, G01C) overlaps. Publication lags filing by roughly 18 months, so the 2026 figure understates actual filing activity for that year.
Filing trend and technology composition
The filing curve and the IPC spread together describe a field that built its core architecture early and has since seen incremental, not expansive, patenting.
A peak in 2019, then a plateau
Filings ran from 5 in 2017 to a peak of 8 in 2019, held at 7 by the 2022 midpoint, and stand at 2 in the still-incomplete 2026 count. Read together with the 18-month publication lag, this points to a technology area where the core design-optimization approaches were staked out in the late 2010s and filing since has been maintenance and refinement rather than a new wave of entrants.
H04B carries the field; everything else is a minority overlap
All 55 records touch H04B (transmission), with G02B (optical elements, 6 records) the largest secondary cluster — evidence that most design-optimization claims are being written as communications-system claims with optics as a supporting element, not as pure optics claims. Spacecraft (B64G, 3), positioning (G01S/G01C, 5 combined) and multiplexing (H04J, 4) show the field's satellite and free-space-link adjacencies, but none of them approaches H04B in volume.
Shares are the percentage of the 55 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Free-Space Optical Communication Design Optimization with Eureka
This page is one run against one query. Ask Eureka your own question about free-space optical communication design optimization and every answer comes back with the patent numbers behind it.
Try EurekaThe records other filers cite
Determining pointing accuracy using optical fiber bundle (US20220107473A1)
A free-space optical communication device includes an optical fiber bundle and one or more processors. The optical fiber bundle includes a central fiber connected to a first photodetector, and a plurality of surrounding fibers, each surrounding fiber connected to a corresponding second photodetector. The one or more processors determine pointing accuracy of a beam received at the optical fiber bundle based on the signals generated at the central and surrounding photodetectors.Assigned to Taara Connect, Inc. and published 2022-04-07, this record reduces pointing-accuracy sensing to a fiber-bundle geometry rather than a servo-control algorithm — a hardware-first approach to a problem most earlier records solved in software.


| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070031151A1 | Acquisition, pointing, and tracking architecture for laser communication | 225 |
| 2 | US6347001B1 | Free-space laser communication system having six axes of movement | 211 |
| 3 | US20160043800A1 | Design of a free-space optical communication module for small satellites | 105 |
| 4 | US5517016A | Lasercom system architecture with reduced complexity | 70 |
| 5 | US7609972B2 | Acquisition, pointing, and tracking architecture for laser communication | 59 |
| 6 | US9813151B2 | Free-space optical communication module for small satellites | 41 |
| 7 | US20200244359A1 | Two-Mirror Tracking System For Free-Space Optical Communication | 27 |
| 8 | US20110274434A1 | Technique for Simultaneously Transmitting Wide and Narrow Optical Beacon Signals | 23 |
| 9 | US20180262271A1 | Celestial navigation using laser communication system | 17 |
| 10 | US10158427B2 | Celestial navigation using laser communication system | 13 |
Citation counts are drawn from a searched corpus and favour older filings; treat them as a measure of architectural influence, not of current market relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the data implies for a filing decision
Three patterns in this dataset matter more than any single ranking: where citation weight sits, where filings are actually made, and how concentrated the inventor base is.
Old architecture, still the reference point
The most-cited record, US20070031151A1 on acquisition-pointing-and-tracking architecture, sits well ahead of anything published in the last decade, with US6347001B1 (six-axis laser communication, 211 citations) close behind. New filings in pointing and tracking are still being written against these two anchors.
This is a US-centred filing map
United States filings outnumber the EPO (7) and WIPO/PCT (6) combined, with Australia, Canada and Austria each contributing 2. A freedom-to-operate review that skips US prosecution history is skipping most of the relevant art.
A small, tightly linked inventor cluster
The strongest co-assignee pairings — Riesing with Nguyen, Riesing with Kingsbury, and Riesing with Caplan — each recur across 4 filings, pointing to a single collaborative team behind a meaningful share of the pointing-accuracy work rather than a broad, distributed inventor base.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to free-space optical communication design optimization, with the prior art for and against each one.
Who is active, and where the field is still open
Recent-year momentum across the most-cited assignees shows zero new filings in the latest year for every one of them — consistent with the plateau in the filing trend rather than any single company pulling back.
No assignee is currently accelerating
Every assignee tracked for recent-year momentum — including the Riesing-Nguyen-Kingsbury cluster and larger corporate holders — shows zero filings in the most recent year. Given the 18-month publication lag this likely understates 2025-2026 activity, but it confirms no single player is visibly pulling ahead right now.
Individual-inventor teams hold real weight
Several of the most connected names in this dataset are individual inventors rather than corporate assignees, filing repeatedly as a team. That is unusual for a hardware-heavy field and suggests some of the sharpest claims here originated in a small satellite-communications engineering group rather than a large defence or telecom incumbent.
Newer commercial entrants are filing hardware-specific claims
The representative record from Taara Connect, filed in 2022, claims a fiber-bundle sensing geometry rather than a control algorithm — a sign that newer commercial entrants are looking for claim space in physical sensor architecture where the software approaches are already crowded.
| Assignee | Recent year | YoY |
|---|---|---|
| X Development LLC | 0 | — |
| ITT Manufacturing Enterprises LLC | 0 | — |
| Exelis Inc. | 0 | — |
| RIESING KATHLEEN MICHELLE | 0 | — |
| NGUYEN TAM NGUYEN THUC | 0 | — |
| KINGSBURY RYAN WALLACE | 0 | — |
| CAPLAN DAVID O | 0 | — |
| Massachusetts Institute of Technology (MIT) | 0 | — |
Where to take this analysis
The landscape points to a plateaued, US-centred field with a small dense inventor cluster and several thin IPC branches. The next step is turning that into a specific filing or freedom-to-operate decision.
Check freedom-to-operate against the two citation anchors
Any new pointing-and-tracking claim should be checked against US20070031151A1 and US6347001B1 before drafting, since both remain the most-cited references in this dataset despite their age.
Run a claim comparison in Patsnap EurekaTest the thin IPC branches for real white space
Adaptive optics correction, fiber-bundle sensing and inter-satellite link margin overlaps all carry single-digit record counts against 55 in the H04B core — worth a targeted search before assuming the space is occupied.
Explore white space in Patsnap EurekaTrack the small-team inventor cluster
The Riesing-Nguyen-Kingsbury-Caplan group accounts for several of the strongest co-assignee links in this dataset; watching their future filings is a low-cost way to see where satellite-scale pointing-accuracy work moves next.
Set up assignee monitoring in Patsnap EurekaCommon questions on this landscape
This landscape identifies 55 patent families filed between 2015 and 2026 that combine free-space optical or laser communication with adaptive optics correction, link margin optimization, or pointing accuracy claims, classified mainly under H04B10/112 and H04B10/118. The core claim territory is dominated by the H04B transmission subclass, with secondary overlaps in optical elements (G02B), spacecraft (B64G), and positioning (G01S, G01C). The two most-cited records, both from the 1995-2010 period, describe acquisition-pointing-and-tracking architectures that later filings still cite and design around.
The dataset shows filing activity split between corporate assignees and a tightly linked individual-inventor cluster, with the strongest co-assignee pairings each recurring across four shared filings. Recent-year momentum data shows every tracked leading assignee at zero filings in the latest year, which given the roughly 18-month publication lag likely reflects incomplete recent data rather than an actual halt. Rather than a single dominant company, the field looks like a moderately concentrated set of specialist teams working on satellite and inter-terminal link engineering.
Filing activity peaked at 8 families in 2019, held at 7 by the 2022 midpoint, and has declined toward a partial count of 2 in 2026. That pattern reads as flat-to-declining rather than growing, though the most recent one to two years are understated because patent publication typically lags filing by about 18 months. The practical read is that the core design-optimization approaches were largely staked out in the late 2010s, with filing since focused on refinement rather than expansion.
The IPC composition shows several branches with single-digit record counts against 55 in the dominant H04B core, including adaptive optics correction for atmospheric turbulence, fiber-bundle-based pointing sensors, inter-satellite link margin optimization, and multiplexed free-space channels. These thin branches don't guarantee an open claim, but they carry far less prior art density than the core pointing-and-tracking architecture claims, which are anchored by two heavily cited records from before 2010. A targeted search inside those specific IPC overlaps is the fastest way to confirm whether a claim is genuinely available.
US20220107473A1, assigned to Taara Connect and published in 2022, claims a free-space optical communication device that determines pointing accuracy using an optical fiber bundle with a central fiber and surrounding fibers, each connected to its own photodetector. The claim ties pointing-accuracy determination to a specific physical sensor geometry rather than to a control algorithm, which narrows its reach to designs using that fiber-bundle arrangement. Anyone building a fiber-bundle-based beam-pointing sensor for a free-space optical terminal should review this record closely before finalizing a detector layout.
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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.