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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/reusable-launch-vehicles-grid-fin-control-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Space & Satellite Systems · Patent LandscapeGrid Fin Control Patents for Reusable Launch Vehicles
42.4K
Published Records
22%
Top-5 Share of All Records
-22%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (1,564 records) with 2024 (1,221) — 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 42,392 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What the grid fin control record set actually covers
Grid fins are the deployable aerodynamic control surfaces that stabilise and steer a returning booster through descent, and the patent activity captured under this search string spans the control logic, actuation hardware and structural mounting that make that steering work. The set is broad by design: it pulls in 42,392 published records filed or published between 2015 and mid-2026, tracking everything from fin deployment mechanics to the digital control loops that command them. Publication lags filing by roughly 18 months, so the most recent years in any trend here are undercounts, not a real slowdown.
Because a single fin-control system can generate several continuation filings and cross multiple jurisdictions, raw document counts overstate how much genuinely distinct engineering exists. Patent families are the fairer unit for judging real technical breadth, and the concentration figures below are read that way.
Filing activity and technology composition, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The Data
Filing trend and technology composition
Two views of the same 42,392-record set: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
A decade of filing, with a 2022 peak
Annual filings rose from 838 in 2017 to a peak of 1,710 in 2022. Using only complete-year data, 2021's 1,564 fell to 1,221 by 2024, a -22% move over that three-year span. Treat 2025 and 2026 figures as still filling in rather than evidence of a genuine drop-off.
Semiconductor and control-electronics classes dominate the mix
H01L (semiconductor devices) touches 11.1% of all records, well ahead of H10D at 5.4% and G06F at 4.1%. Because records can carry multiple IPC codes, these shares sum to more than 100% and should be read as claim density per class, not a partition of the field.
Shares are the percentage of the 42,392 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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The anchor filing and the most-cited prior art
Representative filing
US20090045286A1 — Grid fin control system for a fluid-borne object
KAZAK COMPOSITES, INCORPORATED
A grid fin control system for a fluid-borne body includes a nozzle extension, an optional stabilization device, and a plurality of grid fins. The grid fins are stowable folded against the nozzle extension and deployable to extend radially outwardly.Filed by Kazak Composites, Incorporated and published 2009-02-19, this record predates the modern reusable-booster wave and sits as foundational prior art for stow/deploy grid fin architectures.
Most-cited records in this set
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20080120129A1 | Consistent set of interfaces derived from a business object model | 2,470 |
| 2 | US8978954B2 | Staple cartridge comprising an adjustable distal portion | 1,797 |
| 3 | US20100149073A1 | Near to Eye Display System and Appliance | 1,790 |
| 4 | US20130201316A1 | System and method for server based control | 1,727 |
| 5 | US9332984B2 | Fastener cartridge assemblies | 1,515 |
| 6 | US9358005B2 | End effector layer including holding features | 1,398 |
| 7 | US9795384B2 | Fastener cartridge comprising a tissue thickness compensator and a gap setting element | 1,218 |
| 8 | US20090137887A1 | Analyte sensor | 1,130 |
| 9 | US20180140299A1 | Fastener cartridge comprising a tissue thickness compensator and a gap setting element | 1,033 |
| 10 | US20090143659A1 | Analyte sensor | 1,030 |
Citation counts favour older filings simply because they have had more time to be cited; read them as a signal of influence within this corpus, not as a ranking of current technical importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for filing strategy
Three read-throughs from the concentration, trend and citation data, aimed at where a new filer or licensor should actually look.
Concentration
21.8%
of all 42,392 records
The top of the field is thin, not dominant
The five most active assignees together account for 21.8% of all records in scope, and the top ten only reach 25.9%. That leaves roughly three-quarters of the filing activity spread across a long tail, which is unusual for a hardware-control niche this specific and suggests the core deployment mechanics are not yet owned by any single player.
Ranked leaders, 100 companies covered
Momentum
-22%
2021 to 2024 complete-year filings
Growth has plateaued from a 2022 high, not collapsed
Filing rose steadily through 2022's peak of 1,710 before easing to 1,221 by 2024. That -22% move over the three complete years available is a cooling from an unusually strong peak, not a structural decline, and the 2025-2026 figures are too fresh to read either way.
Peak year 2022, 1,710 records
Jurisdiction
12,328
US receiving-office records
Enforcement exposure is heavily US-weighted
The United States receives far more filings than any other office, well ahead of EPO's 2,529 and WIPO/PCT's 2,050. A design freedom review that only checks EPO and PCT filings is checking the smaller share of the exposure.
UK 1,023, Canada 835, Australia 803
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to reusable launch vehicles: grid fin control patent landscape, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, licensing, or new filing strategy.
Run a freedom-to-operate check on US filings first
Given that 12,328 records entered via the United States against 2,529 at the EPO, any clearance review that leads with Europe is checking the smaller share of the exposure.
Explore in EurekaWatch the long tail, not just the leader
With the top ten holding only 25.9% of all records, most of the technical variation in grid fin control sits outside the ranked leaders and is worth monitoring for emerging approaches.
Explore in EurekaRevisit claim scope once 2025-2026 data fills in
Because publication lags filing by about 18 months, any conclusion about the field slowing down should be re-tested once the most recent two years are complete.
Explore in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Questions practitioners ask about this landscape
The ranked leader in this dataset holds 4,002 records, a clear lead over the fifth-place holder at 716 and tenth place at 307. Even so, the top five combined account for only 21.8% of the full 42,392-record set, so no single organisation controls the field outright. A freedom-to-operate review needs to look well beyond the top names because the remaining three-quarters of activity is spread across a long tail of smaller filers.
Filing activity peaked in 2022 at 1,710 records and has since eased, with complete-year data showing 1,221 records in 2024 versus 1,564 in 2021, a -22% move over that span. That reads as a plateau from an unusually strong peak rather than a collapse. Because publication lags filing by roughly 18 months, the 2025 and 2026 figures in any dataset will look artificially low and should not be used to call a trend.
The United States is by far the largest receiving office in this set with 12,328 records, ahead of the EPO's 2,529 and WIPO/PCT's 2,050, with the UK, Canada and Australia each in the low thousands or below. Any clearance or licensing analysis that treats Europe as the primary risk zone is missing most of the actual filing volume. Teams operating or selling into the US market carry the largest share of potential exposure here.
US20090045286A1, filed by Kazak Composites, describes a grid fin control system with a nozzle extension, an optional stabilization device, and a set of grid fins that stow folded against the extension and deploy radially outward. It is an early, foundational filing on stow-and-deploy grid fin mechanics rather than a narrow claim on any particular actuation method. New designs built around alternative stowage geometries or actuation logic may sit outside its specific claim language, but it is worth checking directly against any deployable-fin mechanism that folds against a central body.
The filing density thins out around adaptive fin-actuation feedback control, thermal-protection integration at the fin hinge line, and coordinated multi-fin deployment sequencing, all adjacent to the heavily claimed core deployment mechanics. These are technically specific enough to support a defensible first claim rather than a broad restatement of stow-and-deploy fin geometry. Given that co-assignee filing is limited to just ten pairs in this dataset, there is also little evidence of established joint-development programs staking out these adjacent branches yet.
Answers are grounded in the same dataset. Derived from a Patsnap search on Reusable Launch Vehicles: Grid Fin Control Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.