Offshore Wind Mooring Line Patents: Leaders, Trends & White Space 2026
A data-backed look at offshore wind mooring line patents: who is filing, which technical routes dominate IPC classes, and where claim space remains open through 2026.
What the offshore wind mooring line record actually shows
Offshore wind mooring line patents sit at the intersection of marine engineering and floating wind infrastructure. The scope here is narrow and recent: 15 published records spanning 2015 through the 2026 cut-off, filed through receiving offices led by China, with smaller counts at the EPO, Japan, South Korea, the US and WIPO. This is a young, low-volume corpus rather than a mature, saturated one.
The IPC composition tells the clearest story: almost every record is classified under B63B (ships and marine vessels), and a substantial minority also carry F03D (wind motors). That pairing confirms mooring line innovation in this space is being claimed primarily as marine hardware — anchors, lines, floating platforms — with the wind-turbine application as a secondary classification rather than the core invention.
Citation leaders and the co-assignee pairs point to a field where a handful of research institutes and engineering firms are active collaborators, but no single entity has locked down the space. Family counts, not raw document counts, are the fairer read here since the dataset already reports at the family level.
Filing trend and technology composition
Two views of the same 15-record dataset: how filings have moved year over year, and how those records classify across IPC subclasses.
Filing trend, 2017–2026
Filings were negligible before 2022, rose to a peak of four records that year, and have since tapered. With fewer than four complete years available once publication lag is factored in, no growth rate can be stated reliably — the most recent years will read low simply because publication has not caught up with filing.
IPC subclass composition
B63B (ships and marine vessels) covers 93.3% of the 15 records and F03D (wind motors) covers 40.0%, with G01L (force and pressure measurement) at 13.3%. The remaining subclasses — B63H, E02B, E02D, G01M and G01W — each appear in a single record. Because a record can carry multiple IPC classes, these shares sum to more than 100%; each share is calculated against the same 15-record denominator.
Shares are the percentage of the 15 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Offshore Wind Mooring Line Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about offshore wind mooring line patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in scope
CN109941396A — Bifurcated mooring line wind turbine mooring system and offshore wind power equipment
The filing, from Huazhong University of Science and Technology (dated 2019-06-28), covers a mooring system built around a floating platform, two heave plates spaced at the platform's midsection, multiple mass blocks, and multiple mooring anchor lines. One end of each anchor line connects to a heave plate; the other anchors to the seabed. The anchor lines are arranged evenly around the platform's central axis, with mass blocks attached along each line. The stated aim is reduced motion response and improved stability at comparatively low cost and simpler construction.This is the most-cited record in the dataset, cited 4 times within the corpus.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN109941396A | 一种分岔系泊线式风机系泊系统及海上风力发电设备 | 4 |
| 2 | CN118722959A | 一种快速解脱漂浮式海上风电系泊系统及解脱方法 | 2 |
| 3 | CN118514806A | 一种海上漂浮式风电和光伏集中系泊系统和设计方法 | 2 |
| 4 | KR102644173B1 | Mooring tension prediction system for floating offshore wind power generation facilities based on IoT | 2 |
| 5 | JP2016016750A | Mooring system of offshore structure group and mooring method of offshore structure group | 2 |
| 6 | JP5685670B1 | 洋上構造物群の係留システム、及び、洋上構造物群の係留方法 | 2 |
| 7 | CN220430420U | 一种用于海上浮式风电机组的单点系泊系统 | 1 |
| 8 | CN109941396B | 一种分岔系泊线式风机系泊系统及海上风力发电设备 | 1 |
Ranked by citation count within this 15-record corpus. Citation counts favour older filings, so treat this as a signal of influence rather than current 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. Publication numbers are shown where the record carries one (8 of 8 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Four figures from this dataset carry direct implications for where to file, who to watch, and how much claim space is actually open.
One filer leads, but the field is not closed
The leading assignee holds 4 of the 15 records in a ranked field of 12 companies; fifth place holds just 1. That gap between first and fifth signals an early leader rather than an entrenched incumbent — there is room for a well-drafted claim to stake out unclaimed ground.
Mooring hardware, not turbine design, is where the claims sit
Nearly all records classify under B63B (ships and marine vessels), with only 40.0% also touching F03D (wind motors). Anyone drafting in this space should expect prior art to be framed as marine mooring hardware, even when the end use is a floating wind turbine.
Activity has not sustained its 2022 peak
Filings were essentially absent before 2022, rose to a peak of four that year, and have not repeated it since. With fewer than four complete years once publication lag is accounted for, this reads as an early, still-forming field rather than a maturing one.
Collaboration exists but is thin
Only four co-assignee pairs appear across the dataset, and the strongest pairing recurs three times. That is a modest signal of joint development rather than an established ecosystem of co-filing partners.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to offshore wind mooring line patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Korea Institute of Ocean Science & Technology | FRONT ENERGIES LLC | 3 |
| Shanghai Investigation Design & Research Institute Co., Ltd. | Sino-Portuguese New Energy Technology Center (Shanghai) Co., Ltd. | 1 |
| Labverse Co., Ltd. | STS ENGINEERING CO LTD | 1 |
| Park Gong-man | SEHO ENG | 1 |
The strongest co-assignee link recurs three times; the other pairs appear only once each, suggesting collaboration in this niche is still occasional rather than structural.
Where to take this analysis
The dataset points to a field still forming its dominant designs. These are the natural next steps for a team deciding where to file or partner.
Map the white space branches
Subclasses like G01M, G01W and E02D each appear in only one record — test whether a first claim there would actually clear the existing art or simply hasn't been tried yet.
Explore white space in EurekaTrack the leading filer's follow-on filings
With one assignee holding four records and a recurring co-assignee pair, watch whether that collaboration extends into new subclasses before committing R&D budget to the same ground.
Monitor assignees in EurekaRe-run the trend once 2024–2025 publications land
Publication lag means the last two years of filing activity are understated here. Re-checking the trend after those publications post will give a truer read on whether 2022's peak was an anomaly or the start of a pattern.
Set a filing alert in EurekaCommon questions about offshore wind mooring line patents
The ranked list covers 12 companies and research institutes active in this niche, with one filer holding 4 of the 15 records in scope. The rest of the field is a long tail — most other entrants appear with a single filing each. This pattern suggests an early-stage field where no single organisation has locked down the core technology, rather than a market dominated by one player.
The dominant classification is B63B, covering ships and marine vessels, which appears in 93.3% of the 15 records in scope. F03D, covering wind motors, appears in 40.0% of records, reflecting that most inventions are drafted primarily as marine mooring hardware with the offshore wind application as a secondary use case. Smaller counts appear under force-measurement, hydraulic engineering, foundation and meteorology-related classes, each in a single record.
Filing activity rose to a peak of four records in 2022 but has not repeated that level in subsequent years, and there are too few complete years of data — once publication lag is factored in — to state a reliable growth rate. Readers should treat the most recent one to two years of the trend as understated, since publication typically lags filing by around 18 months. The honest read is that this is a low-volume, still-forming field rather than one with a clear growth trajectory.
CN109941396A, filed by Huazhong University of Science and Technology, claims a bifurcated mooring line system built around a floating platform, paired heave plates, mass blocks attached to the anchor lines, and lines arranged evenly around the platform's central axis. It is the most-cited record in this dataset, cited four times within the corpus. Anyone designing a similar heave-plate-plus-mass-block mooring arrangement should review its specific claim language closely, though alternative anchor-line geometries and attachment methods outside its exact configuration may remain open.
Several IPC subclasses in this dataset — including force and pressure measurement instrumentation, meteorology-linked monitoring, and foundation or earth-drilling integration — each appear in only one of the 15 records. That sparse coverage suggests these adjacent branches, such as sensor-integrated mooring tension monitoring or combined foundation-mooring systems, are under-claimed relative to the core mooring hardware itself. A team considering these branches should verify the sparse coverage isn't simply because the branch hasn't been attempted commercially yet.
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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.