Tidal Energy Converter Patent Landscape 2026
Tidal Energy Converter Patent Landscape in 2026
The tidal energy converter space is a maturing, moderately concentrated field where a UK-anchored cluster of specialists and a handful of large industrial players hold the leading positions. Annual filing volume peaked in 2017 and has eased since, signalling a field that has passed its primary growth phase rather than one still expanding.
A UK-led field with a clear top tier and moderate concentration
Tidal Generation Ltd leads the applicant ranking, followed closely by GE Energy (UK) Ltd and Mitsubishi Heavy Industries Ltd. The top five filers together account for 27% of the combined patent records of the hundred largest filers, indicating moderate rather than extreme concentration.
The gap between the first-ranked applicant and the mid-tier is meaningful but not prohibitive: the top three players each hold substantial positions while the field below rank five fragments quickly into single-product specialists and university spin-outs. This two-tier structure leaves room for focused challengers in specific sub-technologies.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | TRIDAL GENERATION LTD | 85 | |
| 2 | GE Energy (UK) Ltd | 77 | |
| 3 | Mitsubishi Heavy Industries Ltd | 67 | |
| 4 | Marine Current Turbines Ltd | 54 | |
| 5 | Rolls-Royce PLC | 47 | |
| 6 | BiomeRenewables Inc | 43 | |
| 7 | Orbital Marine Power Ltd | 39 | |
| 8 | Gurit (UK) Ltd | 36 | |
| 9 | Lockheed Martin Corporation | 34 | |
| 10 | Differential Dynamics Corp | 27 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | SuperVAWT | 27 | |
| 12 | OGIN Inc | 26 | |
| 13 | Sabella | 25 | |
| 14 | Sustainable Marine Energy | 25 | |
| 15 | Artemis Intelligent Power Ltd | 23 | |
| 16 | Subsea 7 Norway AS | 23 | |
| 17 | Marine Power Systems | 22 | |
| 18 | Orbital 2 Ltd | 21 | |
| 19 | Tidalstream | 21 | |
| 20 | Seamach Ltd | 19 |
The leaders’ positions imply that core turbine rotor and deployment mechanism IP is largely staked out, but adjacent engineering disciplines — drivetrain control, foundations, and grid integration — remain comparatively open, as reflected in the lower-share IPC branches.
Patent records from the most recent 18–24 months are subject to publication lag and are likely under-counted; the apparent thinning of activity in 2024–2025 should not be interpreted as an acceleration of the decline trend.
Post-peak volume with hydraulic machines as the dominant technology branch
The annual filing trend reveals a field that surged to a high in 2017 and has since settled at a lower steady level, while the IPC composition shows hydraulic machines and engines (F03B) accounting for the largest share of activity, with wind-motor analogues (F03D) forming a secondary cluster.
Annual filing trend
Filings reached their highest recorded annual level in 2017 and have fluctuated in a lower band since 2018. The 2024 and 2025 bars are subject to publication lag and should be read as provisional minimums, not confirmed low points.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F03B (Hydraulic machines and engines) dominates the IPC mix by a wide margin, reflecting the core turbine and water-wheel IP. F03D (wind motors) is the second-largest branch, indicating significant cross-filing with wind turbine methods. Downstream branches — B63B (ships and marine vessels), E02B (hydraulic and waterway engineering), and power-electronics classes — each hold smaller but non-trivial shares, pointing to where system-integration work is being protected.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Tidal energy converter
A tidal energy converter has a pivoting lever that moves in response to tidal fluid moving other elements on the converter. The pivoting lever can be operatively coupled with an electricity generator to produce electricity. Namely, the pivoting lever may be coupled to an air source and compress the air to create a compressed air. The compressed air may be… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Power converters | 147 |
| 2 | Power converters | 105 |
| 3 | Flow enhancement for underwater turbine | 78 |
| 4 | Flow enhancement for underwater turbine generator | 63 |
| 5 | A support frame for water turbines adapted for mov… | 62 |
| 6 | Tide turbine | 59 |
| 7 | Tidal electricity generating apparatus | 55 |
| 8 | Hydraulic tidal and wind turbines with hydraulic a… | 50 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D investment decisions
The combination of post-peak filings, moderate concentration, and a few identifiable under-served branches creates a specific set of entry and differentiation options for engineers evaluating where to focus IP development.
Decline stage: core IP staked, differentiation window narrows
The lifecycle evidence classifies the field as Decline, with annual filings easing back from the 2017 peak. Core rotor and deployment patents are well-established among the leading players, meaning new entrants face a dense prior-art landscape in F03B fundamentals. R&D investment is most defensible in adjacent sub-systems — drivetrain, control, and installation — where coverage is thinner.
Post-peakModerate two-tier structure with mid-field fragmentation
The top five filers account for 27% of the patent records held by the hundred largest filers, a moderate concentration level. The top three — Tidal Generation Ltd, GE Energy (UK) Ltd, and Mitsubishi Heavy Industries Ltd — form a clear first tier. Below rank five, applicants are mostly domain-specific specialists or university entities, each with narrow portfolios. A challenger entering with a differentiated system architecture could move into the mid-tier without immediately confronting the full breadth of a leader’s portfolio.
Moderate HHILimited co-filing activity; two partnerships identified
The evidence captures two co-applicant relationships: Tidal Generation Ltd collaborating with GE Energy (UK) Ltd on three joint records, and Sustainable Marine Energy collaborating with Reconcept GmbH on two. The ecosystem is not heavily networked through formal co-filing, which may reflect the small-company structure of the field or that joint development is captured in licensing rather than joint patent ownership.
Low co-filingUK and Europe anchor the filing map; Asia and Pacific are secondary
The United Kingdom is the leading jurisdiction by patent records, followed closely by the EPO route and the United States, with WIPO (PCT) filings providing broad international reach. Canada, Germany, and Australia form a secondary tier. China, Japan, and South Korea each have a comparatively low number of records, suggesting that Asian market protection has not been a priority for the current leaders — a potential gap for applicants with regional deployment ambitions.
UK-anchoredGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Tidal Generation Ltd | GE Energy (UK) Ltd | 3 |
| Sustainable Marine Energy | ReConceptGmbH | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Tidal Generation Ltd and GE Energy (UK) Ltd lead; Mitsubishi Heavy Industries holds cross-sector depth
The top two applicants are UK-registered entities with portfolios concentrated in core hydraulic machine IP, while the third-ranked player brings a wind-turbine cross-filing strategy that reflects broader renewable energy portfolio management.
Tidal Generation Ltd
Tidal Generation Ltd holds the top position with 85 patent records and concentrates its filing activity heavily in F03B subclasses covering hydraulic machines and engines, particularly F03B 13 and F03B 17 — the rotor and deployment sub-areas that form the core of commercial tidal turbine IP. No applicant momentum data is available for trajectory inference, but the breadth of F03B coverage signals a foundational portfolio built during the field’s growth phase.
patent records: 85Mitsubishi Heavy Industries Ltd
Mitsubishi Heavy Industries Ltd holds 67 patent records and is distinctively positioned relative to the other top players: its technology emphasis is concentrated in F03D (wind motors), specifically F03D 9 and F03D 11, rather than in pure tidal hydraulics. This cross-sector filing pattern suggests the company is protecting hybrid or adapted wind-turbine architectures for marine energy applications, a strategy that differentiates it from the specialist UK incumbents. No applicant momentum data is available for trajectory inference.
patent records: 67Under-served branches adjacent to the dominant hydraulic core
Several IPC classes appear at lower relative shares within the tidal energy converter corpus and represent areas where filing density is thinner compared to the dominant F03B cluster; two of these carry plausible technical value for next-generation system development.
H02P · Control of motors and generators
H02P accounts for a comparatively small share of the corpus despite being directly relevant to variable-speed tidal turbine operation and grid-synchronisation challenges. Tidal currents vary with tidal cycles, making advanced generator control a critical enabler for efficiency. The relatively low filing count suggests that control-system IP has not been aggressively staked out by the leading hardware players, offering a potential differentiation path for power-electronics and controls specialists entering the field.
Search this in Eureka →E02D · Foundations and earth drilling
E02D (foundations and earth drilling) holds a low share of records despite the fact that seabed foundation design is one of the primary cost and installation-risk drivers for tidal stream devices. The sparse coverage may reflect that foundation engineering has been handled through civil-engineering practice rather than patent protection, or that the dominant players have deprioritised this sub-system. For a company with subsea geotechnical capabilities, filing in this branch alongside turbine IP could create a more complete system-level portfolio.
Search this in Eureka →How leading applicants differ by technology route
Strength of each leader across the main technology routes.
| Player | F03B 13 · Hydraulic machines & engines | F03B 17 · Hydraulic machines & engines | F03B 3 · Hydraulic machines & engines | F03D 9 · Wind motors (wind turbines) | F03D 1 · Wind motors (wind turbines) |
|---|---|---|---|---|---|
| Tidal Generation Ltd | Strong · 147 | Strong · 92 | Emerging · 17 | Absent | Emerging · 6 |
| OpenHydro IP Ltd | Strong · 57 | Absent | Absent | Strong · 29 | Absent |
| Marine Current Turbines Ltd | Strong · 35 | Strong · 29 | Moderate · 13 | Absent | Absent |
| Gurit (UK) Ltd | Absent | Strong · 14 | Strong · 24 | Absent | Strong · 15 |
| Mitsubishi Heavy Industries Ltd | Absent | Absent | Absent | Strong · 50 | Absent |
| Rolls-Royce PLC | Strong · 30 | Absent | Moderate · 9 | Absent | Absent |
Frequently asked questions
The corpus covers 561 patent families. This total is the basis for trend and lifecycle analysis, while the applicant ranking uses patent records, which can exceed the family count because a single family may be filed across multiple offices.
Tidal Generation Ltd ranks first with 85 patent records, followed by GE Energy (UK) Ltd with 77 and Mitsubishi Heavy Industries Ltd with 67, based on the applicant ranking in this corpus.
Annual filings reached their highest recorded level in 2017. Activity has eased since then, placing the field in a Decline lifecycle stage. The most recent years (2024–2025) are subject to publication lag, so their low bar counts should be treated as provisional rather than confirmed low points.
The United Kingdom leads by patent record count, followed closely by the EPO route and the United States, with WIPO (PCT) filings also prominent. Canada, Germany, and Australia form a secondary tier. China, Japan, and South Korea each have comparatively low record counts, indicating limited Asian market coverage by the current leaders.
F03B (Hydraulic machines and engines) is the dominant IPC class by a wide margin. F03D (Wind motors / wind turbines) is the second-largest branch, reflecting cross-filing by applicants adapting wind turbine architectures for marine energy. Downstream classes covering marine vessels, hydraulic engineering, gearing, and power electronics each hold smaller shares.
The white-space analysis identifies E02B (Hydraulic and waterway engineering), F16H (Gearing and transmissions), H02P (Control of motors and generators), F01D (Turbines and non-positive engines), and E02D (Foundations and earth drilling) as lower-density branches relative to the dominant F03B core. These are observations of relative sparsity; entry feasibility depends on a company’s specific technical and commercial position.
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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.
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