Deterministic Avionics Networking Patents: Who Leads, Gaps 2026
- 69.9% of the field sits with five assignees. 402 of 575 records in scope belong to the top five filers, so a new entrant is filing directly into occupied claim space almost seven times out of ten.
- Filing activity has pulled back sharply since the 2018 peak. Publications ran from 45 at their peak year down to 5 by 2024, a -79% swing from 2021's 24 filings — though 2025-2026 counts are still filling in as publication catches up to filing.
- H04L dominates the classification mix at 80.9% of records. Digital transmission claims cover most of the corpus, while B64D aircraft-equipment and G05B control-system classes sit under 6% each — a much thinner claim layer.
Filing growth compares 2021 (24 records) with 2024 (5) — 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 575 records in scope (CR5), not by the ranked leaders only.
What counts as deterministic avionics networking here
This landscape covers patent filings that combine deterministic Ethernet architectures — AFDX networks, ARINC 664 and time-triggered Ethernet — with the mechanisms that make them deterministic in practice: virtual link configuration, bandwidth allocation gap control, frame jitter management, redundancy management, frame scheduling and traffic policing. The search string requires both halves to be present, so the corpus is narrower than general avionics networking and closer to the specific engineering problem of guaranteeing latency and bandwidth bounds on a shared network fabric.
The 575 records in scope span 2015 through the 2026-07-31 data cut-off, drawing most heavily on filings routed through the United States, the European Patent Office, China, France and Germany. Because publication lags filing by roughly 18 months, the most recent one to two years understate real filing activity rather than reflect a genuine slowdown.
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Filing trend and technology composition
Two views of the same 575-record corpus: how filing activity moved year over year, and which IPC subclasses carry the claim density.
A sharp pullback from a 2018 peak
Publications ran 37 in 2017 and peaked at 45 in 2018. By 2021 the count had settled to 24, and it fell to 5 by 2024 — a -79% move over that three-year span. Treat 2025 and 2026 figures as incomplete rather than as evidence the field has gone quiet.
H04L carries the field; equipment classes stay thin
H04L (digital information transmission) appears in 80.9% of the 575 records, far ahead of G06F electric digital data processing at 19.3%. Aircraft-specific classes B64D and B64C sit at 5.4% and 2.6% respectively, and control-system class G05B at 2.6% — because a record can carry several classes, these shares add to more than 100% and should be read against the 575-record total, not against each other.
Shares are the percentage of the 575 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Deterministic Avionics Networking with Eureka
This page is one run against one query. Ask Eureka your own question about deterministic avionics networking and every answer comes back with the patent numbers behind it.
Try EurekaThe filings other applicants build around
Apparatus and method of operating a network traffic policing module
An apparatus and method of operating a network traffic policing module includes a data ingress port configured to receive data frames transmitted over the network, a data egress port configured to transmit a set of the data frames to the data egress port, and a logic device configured to execute a set of compliance tests on the data frames received at the data ingress port and transmit to the data egress port only frames that pass those compliance tests.Filed by GE Aviation Systems, published 2016-10-20 as US20160308751A1 — a direct claim on ingress-side traffic policing logic for deterministic networks.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20080205416A1 | Flight control computers with ethernet based cross channel data links | 89 |
| 2 | US20050065669A1 | Aircraft equipment control system | 83 |
| 3 | US20110251739A1 | Distributed fly-by-wire system | 74 |
| 4 | US20060062143A1 | Dual lane connection to dual redundant avionics networks | 70 |
| 5 | US20050220029A1 | Simulation and test system for at least one item of equipment on an AFDX network | 58 |
| 6 | US20120290692A1 | Static Ring Network for Vehicle Communications | 55 |
| 7 | US20060215568A1 | System and method for data collection in an avionics network | 51 |
| 8 | US20160154391A1 | Avionics networks | 46 |
| 9 | US20160294721A1 | System and method for network bandwidth, buffers and timing management using hybrid scheduling of traffic wit… | 46 |
| 10 | EP3057273A1 | Method for a traffic shaping in a network | 46 |
Citation counts inside a searched corpus favour older filings that have had more time to accumulate citations; read them as a signal of influence on later designs, not as a ranking of current importance.
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Browse MCP servers →What the concentration and classification data mean for filing strategy
The numbers point to a field where a small set of aerospace primes hold the core transmission claims, while equipment-integration and control-system layers remain comparatively open.
The core is crowded, not the whole field
Five assignees hold 402 of the 575 records in scope. That concentration sits almost entirely inside virtual link configuration, bandwidth allocation and frame scheduling — the mechanisms named directly in the search string — rather than across every possible avionics networking claim.
A real pullback, with a caveat on recency
Filings fell from 24 in 2021 to 5 in 2024, a genuine three-year decline rather than a rounding artefact. Because publication trails filing by about 18 months, 2025-2026 figures cannot yet be read as continuing that decline or reversing it.
Transmission claims dominate over airframe integration
H04L transmission claims cover 80.9% of records, while B64D aircraft equipment and B64C aeroplane/helicopter classes sit under 6% each. That gap suggests most protected ground is generic networking mechanism, not aircraft-specific integration.
Filing partnerships are narrow and specific
Only ten co-assignee pairings appear across the corpus, and the strongest pairing links a controls/networking supplier with a real-time Ethernet specialist. Co-filing here looks more like a targeted joint-development arrangement than a broad ecosystem pattern.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to deterministic avionics networking, with the prior art for and against each one.
A short list of primes and integrators holds most of the ground
The ranked leaders come from aerospace OEMs, avionics integrators and real-time networking specialists rather than a broad field of new entrants; recent-year momentum has cooled across nearly all of them.
One assignee sets the pace by a wide margin
The leading assignee's record count is nearly four times the fifth-place figure, indicating a filer that has treated this as a core patenting programme rather than an incidental output of product development.
Recent-year activity has gone quiet across the leaders
Several of the most active historical assignees show zero filings in the latest tracked year, a -100% year-over-year move for each. Read this alongside the publication lag: it may reflect filings still working through the pipeline rather than a genuine stop.
A long tail beyond the top ten
The ranking returns 66 companies in total, and the gap from tenth place (12 records) down through the rest of the list is steep. Most of the ranked field holds only a handful of filings each, consistent with occasional rather than programmatic patenting.
| Assignee | Recent year | YoY |
|---|---|---|
| China Aeronautical Radio Electronics Research Institute | 1 | — |
| Thales SA | 0 | -100% |
| Airbus Operations SAS | 0 | -100% |
| GE Aviation Systems LLC | 0 | -100% |
| Honeywell International Inc | 0 | — |
| TTTech Computertechnik AG | 0 | — |
| AIRBUS FRANCE | 0 | — |
| Airbus Operations Limited | 0 | — |
Where to take this analysis next
The dataset points to specific follow-up work rather than a single conclusion — the gaps and the concentration both need closer reading before they inform a filing or freedom-to-operate decision.
Run a freedom-to-operate check on the gate chips
The under-claimed sub-areas flagged here are thin relative to the H04L core, not empty. Confirm claim scope against the top assignees' portfolios before drafting.
Check claims in Eureka →Track the top assignees' 2025-2026 filings as they publish
Recent-year momentum reads as a pullback, but the publication lag means several top filers may still have applications in the pipeline that have not published yet.
Monitor assignee activity →Pull the full most-cited list against your own claims
The five most-cited records here anchor much of the downstream citation network; check any planned filing against their claim language directly.
Compare cited art in Eureka →Common questions on this landscape
The corpus in scope covers 575 records that combine an AFDX network, ARINC 664 or time-triggered Ethernet architecture with a deterministic-networking mechanism such as virtual link configuration, bandwidth allocation gap control, frame jitter management, redundancy management, frame scheduling or traffic policing. Coverage runs from 2015 through the 2026-07-31 data cut-off. The leading filers are aerospace OEMs and avionics integrators, with the top five assignees holding 69.9% of all records, so most of the enforceable ground sits with a small number of established players rather than being spread across the industry.
The ranked list returns 66 companies, and it is concentrated at the top: the leading assignee holds 109 records, more than three times the fifth-place figure of 28. Aerospace primes, avionics system integrators and specialists in real-time Ethernet appear repeatedly among the top ranks, while the remainder of the ranked list files only occasionally. Anyone assessing competitive risk in this space should focus freedom-to-operate work on the top ten assignees, who together hold 83.7% of the 575 records in scope.
Filing activity peaked in 2018 at 45 published records and has declined since; the count fell from 24 in 2021 to 5 in 2024, a -79% change over that span. However, patent publication typically lags the actual filing date by roughly 18 months, so the 2025 and 2026 figures in any dataset are still filling in and should not be read as confirming a continued decline. The safest reading is that filing activity cooled meaningfully through 2024, with the most recent one to two years genuinely unknown rather than genuinely low.
Classification data shows H04L digital transmission claims covering 80.9% of the 575 records, while aircraft-specific integration classes such as B64D (5.4%) and B64C (2.6%), and control-system class G05B (2.6%), carry much less filing density. That gap suggests more open ground around aircraft-specific equipment integration and control-loop applications of deterministic networking than around the core transmission mechanisms themselves, which are heavily claimed by the leading assignees. A practical next step is a freedom-to-operate check focused on those thinner classes before drafting new claims there.
US20160308751A1, filed by GE Aviation Systems and published 2016-10-20, claims an apparatus and method for a network traffic policing module: a data ingress port, a data egress port, and logic that runs compliance tests on incoming frames and forwards only compliant frames to egress. This is a fairly specific architecture for ingress-side frame policing rather than a claim over traffic policing in general. Designs that police traffic through a different structural arrangement — for example policing at egress, or via a shared scheduling function rather than a dedicated ingress module — have a plausible design-around path, though that judgment should be confirmed against the full claim set, not the abstract alone.
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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.