Subsea Production System Control Patents: Leaders & Trends 2026
- Filing activity peaked in 2021 at 16 families and has since fallen back toward zero, a pattern more consistent with a saturating claim space than a growing one.
- 88 of 91 families sit in E21B earth and rock drilling, with control-systems classifications (G05B, G05D) appearing in only 3 records each — control logic is claimed as a feature of the well, not as its own art.
- Six co-assignee pairs total across the whole dataset filing here is overwhelmingly done by single entities, not joint ventures or supplier consortia.
Filing growth compares 2021 (16 records) with 2024 (3) — 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 91 records in scope (CR5), not by the ranked leaders only.
What this dataset covers
This landscape draws on 91 patent families published between 2015 and mid-2026 that combine subsea production system, subsea tree or subsea processing terminology with control-specific language — subsea control module, hydraulic control system, electro-hydraulic control or all-electric control — and sit inside IPC classes covering wells, general control systems and process control. It is a narrow, deliberately control-focused cut of the broader subsea production art.
Publication typically lags filing by around 18 months, so the drop shown in the most recent year overstates any real slowdown — 2026 in particular is a partial year and should not be read as a cliff.
Filing trend and technology composition
Two views of the same 91-family dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A single peak, then decline
Filings rose from 2 in 2017 to a peak of 16 in 2021, then fell sharply — the midpoint year of 2022 recorded zero. That shape points to a technology whose core control architectures were claimed early in the window, rather than one still building momentum.
Concentrated in well engineering, not control theory
88 of 91 records classify under E21B (earth and rock drilling / wells); marine vessel classes (B63B, B63C) and control-specific classes (G05B, G05D, F15B) each account for single digits. Control logic in this corpus is claimed as part of the subsea tree or module hardware, not as standalone software or systems-engineering art.
Shares are the percentage of the 91 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Subsea Production System Control System with Eureka
This page is one run against one query. Ask Eureka your own question about subsea production system control system and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
AU2012268839A1 — Vertical subsea tree assembly control (VETCO GRAY INC., 2013-07-18)
A vertical subsea tree is operated by a subsea control module supplied with hydraulic and electric power from the surface through the tree itself. A landing sub, communicatively coupled to the surface via a landing sub umbilical, is run to the tree and engages mating penetrations on the master valve block to route flow passages to the subsea control module through the block, which then operates the tree.Abstract trimmed for length; full claim set available via the source record.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5192167A | Subsea production system | 51 |
| 2 | US4211281A | Articulated plural well deep water production system | 38 |
| 3 | US4549578A | Coded fluid control system | 32 |
| 4 | WO2006099316A1 | Riserless modular subsea well intervention, method and apparatus | 31 |
| 5 | CN106020102A | 一种水下采油树智能化控制系统及其控制方法 | 29 |
| 6 | US20180171759A1 | Systems and methods for starting, restarting, monitoring, and increasing performance of a production and/or i… | 25 |
| 7 | EP3336303A2 | Systems and methods for starting, restarting, monitoring and increasing performance of a production and/or in… | 14 |
| 8 | US11162317B2 | Modular vertical wet christmas tree, installation method and intervention method thereof | 10 |
| 9 | WO2015136234A1 | A powered subsea tool assembly, to reinstate the intended functionality of a subsea tree valve actuator | 7 |
| 10 | US20200224510A1 | Modular vertical wet christmas tree, installation method and intervention method thereof | 6 |
Citation counts favour older filings simply because they have had more time to be cited — read them as a measure of influence on later filings, not of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. 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 read-throughs from the trend, the citation table and the co-filing pattern.
The core architecture window has likely closed
A sharp rise to a 2021 peak followed by a midpoint collapse to zero suggests the foundational electro-hydraulic and all-electric control claims were staked out in a concentrated burst rather than filed steadily. New entrants now compete for narrower, more specific claim territory around that core.
Old subsea production system patents still anchor the field
The most-cited record dates back to an early subsea production system patent, followed by a 1980s articulated well system and a coded fluid control patent — foundational mechanical and hydraulic concepts, not recent software-driven control. Newer filings build on, rather than replace, this base.
This is largely a single-owner filing pattern
With only six co-assignee pairings across 91 families, and the strongest pair reaching just four joint filings, most control-system IP here is owned outright by one company rather than shared across supplier-operator or JV structures.
Control claims travel inside the hardware claim, not beside it
Only a handful of records classify separately under G05B/G05D control-systems codes. Drafting a claim purely on control logic or software architecture, independent of the physical tree or module, is the exception here rather than the norm.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to subsea production system control system, with the prior art for and against each one.
Who is filing, and how concentrated is ownership
91 families is a small enough set that a handful of assignees can dominate — the question is whether that concentration is recent or historic.
A compact, specialist field
With only 91 families across more than a decade, this is a specialist corner of subsea engineering rather than a mass-filed technology — a small number of dedicated subsea equipment suppliers account for most of the volume.
No assignee shows recent-year filing activity
Every assignee tracked for recent-year momentum — including established subsea names — shows zero filings in the latest year. Combined with the 2026 partial-year caveat, this reads as a lull rather than an exit, but it is worth confirming directly with each company's more recent disclosures.
Joint filing is the exception, not the rule
The strongest co-assignee pairing reaches only four joint filings; most other pairs are in the low single digits. Ownership of subsea control IP in this set is concentrated in individual corporate assignees rather than spread across joint ventures.
Where to take this analysis
The trend and ranking answer where the field has been. The next questions are about where it is going and what any given company can still claim.
Model the 2021 peak against operator capex cycles
Check whether the 2021 filing spike correlates with subsea capex announcements from major operators — that would confirm whether the peak is technology-driven or budget-driven, and whether it is likely to recur.
Explore filing trends in Eureka →Pressure-test the white space chips against full claim text
The under-claimed branches flagged here are based on record counts, not claim scope — run a claim-level search on all-electric actuator control and condition-monitoring sensor fusion before assuming they are truly open.
Run a claim search in Eureka →Track the zero-momentum assignees for renewed activity
Every listed assignee shows zero filings in the latest year; set up monitoring so a renewed filing from any of them is caught early rather than found a year later.
Set up assignee monitoring in Eureka →Common questions on subsea production system control patents
In this dataset it means the subsea control module and the surrounding hydraulic, electro-hydraulic or all-electric control architecture that operates a subsea tree, valve block or processing unit from the surface or from a subsea control system. Most of these filings classify under E21B (wells) rather than under dedicated control-systems IPC codes, because the control claim is usually written as part of the tree or module hardware. Only a small minority separate out control logic as its own claim, under G05B or G05D.
The trend in this dataset rose to a peak of 16 families in 2021 and then fell sharply, with the 2022 midpoint recording zero. That looks like a real slowdown from the peak, though the most recent one or two years are understated because publication typically lags filing by around 18 months. A more reliable read comes from watching whether filings recover once the lagged years fully publish.
Ownership is concentrated among a small set of dedicated subsea equipment suppliers rather than spread widely, which is typical for a 91-family niche field. Co-assignee filing is rare — only six pairs exist across the whole set, and the strongest pair reaches just four joint filings. That suggests most companies here develop and file control IP independently rather than through joint ventures or shared supplier arrangements.
AU2012268839A1 claims a vertical subsea tree operated by a subsea control module that receives hydraulic and electric power through the tree itself, with a landing sub and umbilical routing flow passages through the master valve block to the module. It is a specific mechanical and hydraulic routing architecture, not a broad claim over all subsea control modules. A new design that supplies power or signal through a different physical path, or that avoids the landing sub/master valve block routing described, has room to work around it, but any close variant on that routing should be checked against the full claim set.
Relative to the dense hydraulic and electro-hydraulic control claims, this dataset shows thin coverage in all-electric actuator control loops, condition-monitoring sensor fusion for control modules, and control interfaces for riserless intervention work. These are record-count observations, not a guarantee of open claim scope — a proper freedom-to-operate check requires reading the actual claims in the adjacent art, particularly the older, heavily-cited hydraulic patents that still anchor the field.
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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.