Subsea Production Systems Patents: Who Leads, Where the Gaps Are 2026
- 67.5% concentration. The top 5 assignees account for 112 of 166 records in scope — a field with a clear, entrenched core rather than a diffuse crowd of small filers.
- +138% filing growth, 2021-2024. Filings rose from 8 to 19 over that span, the most recent complete years available, even as the field's 2017 peak of 30 has not been matched since.
- E21B dominates at 60.2%. Earth and rock drilling classifications sit under 100 of 166 records, with testing, positioning and geophysics subclasses trailing well behind.
Filing growth compares 2021 (8 records) with 2024 (19) — 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 166 records in scope (CR5), not by the ranked leaders only.
What subsea production systems patenting actually covers
Subsea production systems patents in this dataset cluster around equipment integrity, leak detection and process condition monitoring for underwater infrastructure — wellheads, manifolds, risers and the sensor networks that watch them. The search scope pairs subsea processing terminology with integrity and degradation language, which pulls in drilling-adjacent classifications alongside dedicated monitoring and positioning technology. Earth and rock drilling (E21B) is the single largest IPC subclass touched, which reflects how much of subsea production hardware is still claimed through well-completion and wellhead architecture rather than standalone sensor packages.
166 records sit in scope across the 2015-2026 coverage window, with the most recent year necessarily undercounted because publication lags filing by roughly 18 months. Receiving-office data shows the United States as the largest single office, with Europe, the United Kingdom, WIPO and Australia each carrying meaningful volume — a signature of a technology filed for multi-jurisdiction offshore operations rather than a single home market.
Trend and technology composition
The filing trend and IPC composition below are drawn directly from the 166 records in scope. Read the most recent year or two as a floor, not a ceiling — publication lag means 2025 and 2026 filings are still arriving.
Filing trend: a 2017 peak, then a rebuilding phase
Filings peaked at 30 in 2017 and have not returned to that level since, but the 2021-2024 window shows genuine rebuilding: 8 filings in 2021 climbing to 19 in 2024, a 138% increase over three complete years. Treat 2025 and 2026 figures as provisional given the ~18-month publication lag.
Technology composition: drilling-adjacent claims dominate
E21B (earth and rock drilling) touches 60.2% of the 166 records, far ahead of G01M testing/structure balance (19.3%) and G01S radar/sonar/positioning (18.1%). Geophysics, temperature measurement, digital data processing, naval vessels and vibration/sound classifications each cover a smaller but non-trivial slice, since records commonly carry more than one IPC class.
Shares are the percentage of the 166 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Subsea Production Systems Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about subsea production systems patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records and a representative claim
Intelligent underwater leak detection system
A subsea leak detection system is disclosed which includes a plurality of subsea leak detection sensors and a leak detection controller adapted to receive leak detection data from the plurality of subsea leak detection sensors and direct the sensing activities of the plurality of subsea leak detection sensors based upon the received leak detection data.Filed by FMC Technologies, granted 2011-04-05 — a foundational claim in the leak-detection sensor-network branch of this landscape.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20180321385A1 | Systems and methods for monitoring underwater structures | 38 |
| 2 | US20190011565A1 | Underwater optical positioning systems and methods | 31 |
| 3 | US20090078028A1 | Intelligent underwater leak detection system | 30 |
| 4 | US20120098674A1 | Wireless subsea monitoring and control system | 26 |
| 5 | US20190219701A1 | Systems and methods for monitoring underwater structures | 20 |
| 6 | US7918126B2 | Intelligent underwater leak detection system | 19 |
| 7 | US20090056949A1 | Fluorescence measurement system for detecting leaks from subsea systems and structures | 19 |
| 8 | WO2019014245A1 | Underwater optical positioning systems and methods | 17 |
| 9 | US10871567B2 | Underwater optical positioning systems and methods | 15 |
| 10 | US20120091364A1 | Optical leak detector for subsea equipment | 12 |
Citation counts favour older filings simply by virtue of time in circulation — read them as a signal of influence within this corpus, not as a ranking of current technical importance.
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Three patterns stand out once concentration, trend and technology composition are read together: the field has a genuine leader, growth is real but recent, and the claim space is uneven across sub-technologies.
A field with an entrenched core, not a crowd
112 of 166 records sit with five assignees, and the leader alone accounts for 33 records against a fifth-place figure of 13. New entrants are filing into a space where freedom-to-operate around the core sensor and leak-detection architectures is already narrow.
Rebuilding after a 2017 peak
Filings dropped from the 2017 peak of 30 before climbing again through the early 2020s, reaching 19 by 2024. That is real growth on a three-year complete-data window, not a projection built on the still-filling 2025-2026 counts.
Drilling architecture still anchors the field
Testing (G01M, 19.3%), positioning (G01S, 18.1%) and geophysics (G01V, 13.3%) trail well behind E21B, suggesting that dedicated monitoring and diagnostic claims are still filed as attachments to drilling/completion hardware more often than as standalone systems.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to subsea production systems patent landscape, with the prior art for and against each one.
Who holds the claims, and where the next filer could still move
The ranked assignee list runs to 33 companies, but recent-year momentum has already narrowed to a small handful of active filers — most of the historically dominant names show zero filings in the latest year captured.
One filer well ahead of the field
The leading assignee holds roughly a fifth of all 166 records outright, well clear of the fifth-place holder at 13. That gap is the clearest single signal in the ranking: this is not a fragmented technology.
A long tail beyond the top ten
The top 10 combined hold 89.2% of all 166 records, leaving the remaining 23 ranked assignees to divide a small residual share. Entering this field competitively means displacing incumbents, not filling an empty gap.
Recent activity has thinned out sharply
Several of the historically largest filers show zero recorded filings in the latest year, while a smaller sensor-technology entrant shows the only positive recent-year count in the momentum data. That pattern is consistent with publication lag masking recent activity from the larger incumbents rather than a genuine pullback.
| Assignee | Recent year | YoY |
|---|---|---|
| 3D AT DEPTH INC | 1 | — |
| Halliburton Energy Services, Inc. | 0 | — |
| FMC Technologies, Inc. | 0 | — |
| Oceaneering International, Inc. | 0 | — |
| OneSubsea IP UK Ltd. | 0 | — |
| MCSTAY DANIEL | 0 | — |
| Aker Solutions Ltd. | 0 | — |
| TESLA SUBSEA INC | 0 | -100% |
Where to take this analysis
This page shows what the aggregate data says. Turning it into a filing or freedom-to-operate decision means drilling into specific claim sets and specific competitors.
Map claims against the leader's portfolio
The top-ranked assignee's 33 records concentrate around leak detection and sensor control architectures. Before filing in that space, check which specific claim elements are already covered versus open for a narrower improvement claim.
Explore assignee portfolios in EurekaTrack the under-claimed branches
Acoustic diagnostics, wireless sensor power and AUV-based inspection carry lower IPC density than the drilling-heavy core. These are the branches where a well-drafted first claim has more room to stand.
Run a white space search in EurekaWatch for the publication-lag correction
2025 and 2026 filing counts will keep rising as applications publish. Re-check momentum data in Eureka in six to twelve months before concluding any assignee has slowed down.
Set up monitoring in EurekaCommon questions about subsea production systems patenting
The ranked assignee list covers 33 companies, and it is heavily concentrated: the leading assignee alone holds 33 of the 166 records in scope, well ahead of the fifth-place holder at 13. The top 5 assignees together account for 67.5% of all records, and the top 10 account for 89.2%. That leaves the remaining 23 ranked assignees dividing a small residual share, so this is a field defined by a small group of entrenched incumbents rather than a broad competitive set.
Filings peaked in 2017 at 30 and have not returned to that level since, but the trend through the most recent complete years shows real growth: from 8 filings in 2021 to 19 in 2024, a 138% increase. Figures for 2025 and 2026 look lower only because publication typically lags filing by around 18 months, so those years are still filling in and should not be read as a slowdown.
Earth and rock drilling (IPC class E21B) is by far the largest category, appearing in 60.2% of the 166 records in scope, reflecting how much subsea hardware is claimed through well-completion and wellhead architecture. Testing and structural monitoring (G01M) and positioning technology like sonar and radar (G01S) follow at 19.3% and 18.1% respectively, with geophysics, temperature sensing, digital processing, naval vessel design and vibration measurement each covering smaller slices. Since records often carry multiple IPC classes, these shares add up to well over 100%.
The lower-share IPC branches relative to the drilling-heavy core point to the open ground: acoustic vibration diagnostics for structural fatigue, wireless power management for subsea sensor networks, autonomous underwater vehicle-based inspection, and real-time material degradation modelling all sit at lower filing density than the core drilling and leak-detection claims. A first-mover claim in one of these branches has more room to stand without immediately colliding with the top assignees' existing portfolios, though it still needs a proper freedom-to-operate check against the specific claim language on record.
US7918126B2, assigned to FMC Technologies and granted in 2011, discloses a subsea leak detection system built from multiple leak detection sensors coordinated by a controller that directs sensing activity based on the data it receives. It is one of the more heavily cited records in this corpus, which signals it has functioned as reference prior art for later leak-detection and sensor-coordination filings. Anyone drafting claims around coordinated subsea sensor networks or adaptive sensing control should review its specific claim scope closely, since it predates much of the field's more recent sensor-network filing activity.
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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.