Surface Code Decoder Patents: Leaders, Trends & White Space 2026
A data-led review of surface code decoder patents: filing trends since 2017, technology composition across eight IPC subclasses, leading assignees and where claim space remains open.
Filing growth = 2021 (26 records) → 2024 (41); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 1,097 records in scope (CR5), not the ranked leaders only.
What the surface code decoder filing record shows
Surface code decoding sits at the intersection of quantum error correction theory and the digital signal-processing hardware needed to run it in real time. The 1,097 records mapped here span 2015 through the partial-year 2026 cut-off, and the IPC composition shows the field pulling heavily from established data-recognition and coding disciplines rather than starting from a blank slate. G06K, G06F and G11B together account for the largest blocks of activity, suggesting that much of the claimed territory borrows from pattern-recognition and storage-channel decoding techniques adapted to a quantum context.
Assignee concentration is moderate rather than extreme: the leader holds a clear lead in record count, but the top ranked group as a whole covers only a minority share of all records in scope. That pattern points to a field still being staked out by multiple independent filers rather than one locked down by a single dominant portfolio.
Filing trend and technology composition
The two views below cover the same 1,097 records from different angles: one tracks filing volume by year, the other breaks the same body of records down by IPC subclass so a reader can see which technical disciplines carry the claim density.
Filing trend, 2017–2026
Filings climbed from 44 in 2017 to a peak of 47 in 2023, with the 2021-to-2024 span showing a 58% rise from 26 to 41 records. 2025 and 2026 figures are undercounts because publication typically lags filing by around 18 months, so the visible dip in the most recent years should not be read as a slowdown.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
Technology composition by IPC subclass
G06K (data recognition and presentation) appears on 34.8% of the 1,097 records, more than double the next largest subclass, G06F (electric digital data processing) at 14.9%. Because a single record can carry several IPC classes, these shares sum to more than 100% and should be read as coverage density, not as a partition of the field.
Shares are the percentage of the 1,097 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Quantum Control & Error Correction: Surface Code Decoder Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about quantum control & error correction: surface code decoder patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
EP0580280B1 — Card assembly and xerographic printing apparatus for information cards
The filing describes a card assembly that permits xerographic printing of information cards, such as identification or authorization cards, using a carrier sheet with a cavity holding a detachably bonded information card. A magnetic encoder adapted to encode a magnetic strip on the card assembly is also specified as part of the printing apparatus.Filed by American Family Life Assurance Company of Columbus; granted 2000-09-20. Included here as the representative record returned by the search string rather than as a decoding-algorithm patent.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20150128116A1 | Web-based scan-task enabled system and method of and apparatus for developing and deploying the same on a cli… | 703 |
| 2 | US20020154620A1 | Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing | 402 |
| 3 | US7050419B2 | Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing | 391 |
| 4 | US5384671A | PRML sampled data channel synchronous servo detector | 368 |
| 5 | US6069696A | Object recognition system and method | 338 |
| 6 | US5260967A | CDMA/TDMA spread-spectrum communications system and method | 256 |
| 7 | US5341249A | Disk drive using PRML class IV sampling data detection with digital adaptive equalization | 245 |
| 8 | US5887995A | Touchpad overlay with tactile response | 244 |
| 9 | US20070231824A1 | Multiplex decoding of array sensors with microspheres | 216 |
| 10 | US5907582A | System for turbo-coded satellite digital audio broadcasting | 202 |
Citation counts reflect influence within the searched corpus and skew toward older filings; treat them as a signal of prior-art density rather than of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns in the data matter more than any single ranking: where filing volume is concentrated, how fast it has grown, and which technical classes carry the density.
The top of the ranking is thin relative to the field
The five leading assignees combine for 195 records, or 17.8% of all 1,097 records in scope. That leaves the large majority of filings spread across a long tail of the remaining ranked companies, which is a different competitive picture from fields where a handful of players hold the majority of claim space.
Activity accelerated through the early 2020s
Filings rose from 26 in 2021 to 41 in 2024, a 58% increase over that three-year span and the clearest complete-year evidence of momentum in the dataset. 2025 and 2026 counts are still filling in given the typical 18-month lag between filing and publication.
Data-recognition classing dominates the composition
G06K appears on more than a third of the 1,097 records, well ahead of G06F at 14.9% and G11B at 10.4%. The prominence of recognition and storage-channel classes alongside quantum-specific coding (H03M at 7.7%) suggests decoder claims are frequently drafted against adjacent, well-established digital-processing art.
Filing activity is split across US, European and PCT routes
The United States leads with 284 records, followed closely by the EPO at 251 and Germany/Austria each near 75. A further 66 records route through the WIPO PCT system, indicating that a meaningful share of applicants are pursuing multi-jurisdiction protection rather than filing in a single home market.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to quantum control & error correction: surface code decoder patent landscape, with the prior art for and against each one.
Where to take this analysis
The filing trend and technology composition point to an active, moderately concentrated field. The next steps depend on whether the goal is defensive clearance, licensing strategy or identifying open claim territory.
Map the white space inside G06N and H03M
AI-based computing (G06N, 5.9%) and coding/code conversion (H03M, 7.7%) are the smallest of the eight tracked subclasses relative to G06K's 34.8%, which is where genuinely quantum-native decoder claims are most likely to still be open.
Explore white space in EurekaTrack the leading assignee's filing cadence
With 64 records, the leading assignee sits well ahead of fifth place at 21 and tenth at 13; watching its year-over-year filing rate is a more reliable early-warning signal than watching the tail.
Set up assignee tracking in EurekaStress-test the most-cited prior art against new claims
The most-cited records in this corpus predate the quantum-specific decoder wave and come from adjacent signal-processing and recognition art; any new claim drafting should be checked against that older, heavily-cited layer first.
Run prior-art analysis in EurekaQuestions practitioners ask about this landscape
The dataset used for this landscape contains 1,097 published records in scope, spanning filings from 2015 through the partial 2026 cut-off. This count is drawn from a search targeting surface code decoder terminology in titles, abstracts and claims, so it is a scoped figure rather than an exhaustive count of every quantum error correction filing. Because publication lags filing by roughly 18 months, the most recent one to two years in this total will grow as more applications publish.
The ranking covers 100 companies, with the leading assignee holding 64 records, fifth place at 21 and tenth place at 13. The top five combined hold 195 records, or 17.8% of all 1,097 records in scope, which means the field is led but not tightly controlled by a small group. Anyone assessing freedom to operate should look at the full ranked list rather than assuming a single company dominates the space.
Filings grew 58% from 26 in 2021 to 41 in 2024, the most recent year the dataset treats as complete. Counts for 2025 and 2026 appear lower in the raw trend, but that reflects the normal 18-month lag between filing and publication rather than an actual slowdown. Anyone reading the trend chart should treat the final one to two data points as provisional and expect them to rise as more applications publish.
The largest technology classes are G06K (data recognition and presentation) at 34.8% of the 1,097 records, G06F (electric digital data processing) at 14.9%, and G11B (information storage) at 10.4%. Quantum-adjacent coding classes such as H03M and AI-computing class G06N are present but smaller, each under 8%. This mix indicates that much of the drafted claim language in this space borrows structure from established digital-processing and recognition art rather than from purpose-built quantum decoding language alone.
The United States is the largest single receiving office with 284 records, followed by the European Patent Office at 251, with Germany and Austria each near 75 records. A further 66 records route through the WIPO PCT system, which points to meaningful multi-jurisdiction filing rather than single-market protection. Teams doing freedom-to-operate work should check all of these offices rather than relying on a US-only or EPO-only search.
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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.