Coverage
current to 26 August 2026These stats are for our local vector database. Search uses additional third-party APIs, and agentic retrieval is exposed to all.
Where the patents come from
| Office | Patents | Full text | From | To | What is published |
|---|---|---|---|---|---|
| EP European Patent Office | 2,901,394 | 2,270,463 78% | December 1978 | August 2026 | Applications as published with their search report, and granted specifications. |
| US United States Patent and Trademark Office | 2,515,208 | 2,514,208 99.9% | March 1971 | August 2026 | Granted patents. |
1,725 publications from 45 further offices, including CN, DE, JP, WO and KR, are held where a family member or a citation brought them in. That is not coverage of those offices and should not be read as any.
How far back it goes
| 1970s | 110,676 | |
| 1980s | 531,968 | |
| 1990s | 826,647 | |
| 2000s | 1,128,130 | |
| 2010s | 1,631,464 | |
| 2020s | 1,189,433 |
The last ten years
| 2017 | 182,466 | |
| 2018 | 188,586 | |
| 2019 | 207,435 | |
| 2020 | 202,547 | |
| 2021 | 183,305 | |
| 2022 | 174,423 | |
| 2023 | 180,821 | |
| 2024 | 186,300 | |
| 2025 | 187,680 | |
| 2026 | 74,357 |
2026 runs to 26 August and is still filling: a patent is published months after it is filed, so the most recent year is always the thinnest.
What it covers
| B Performing operations; transporting | 2,593,951 | |
| F Mechanical engineering; lighting; heating; weapons | 1,338,277 | |
| G Physics: measuring, testing, optics, computing, control | 994,609 | |
| E Fixed constructions: building, mining, drilling | 468,139 |
Those four are what the corpus is FOR. Other sections appear as secondary symbols on the same patents, so a search still reaches them where they touch this work: 389,663 publications carry a symbol in H (electricity), 334,256 in C (chemistry and metallurgy), 250,493 in A (human necessities) and 42,386 in D (textiles and paper).
The twenty largest fields
| CPC | Field | Patents |
|---|---|---|
G01N | Investigating or analysing materials | 300,849 |
B29C | Shaping and joining of plastics | 141,855 |
B65D | Containers, packaging and storage | 140,299 |
B01D | Separation processes | 129,387 |
G01R | Measuring electric and magnetic variables | 121,334 |
B41J | Printing mechanisms, including ink jet | 110,574 |
B60R | Vehicle parts and fittings | 103,150 |
E21B | Earth and rock drilling | 97,138 |
G01S | Radar, sonar and radio navigation | 88,405 |
B01J | Chemical and physical processes, catalysis | 87,664 |
F16H | Gearing | 79,053 |
B62D | Motor vehicles and trailers | 77,797 |
B32B | Layered products | 77,705 |
B65H | Handling thin or filamentary material | 69,065 |
F16L | Pipes, joints and supports | 64,348 |
G05B | Control and regulating systems | 64,154 |
B65G | Transport and storage devices | 62,855 |
B23K | Welding, soldering and cutting by heat | 61,155 |
F01D | Turbines and non-positive-displacement engines | 59,033 |
F16K | Valves, taps and cocks | 54,958 |
5,395,678 of the 5,418,327 publications carry a CPC symbol, so a classification filter or a neighbouring-class search reaches almost all of them.
What is held for each patent the fields behind every result
| Claims | Every claim as filed, addressable one at a time. |
| Description | The description, paragraph by paragraph, in the order it was filed. |
| Abstract | As published. |
| Title | As published. |
| Publication number and kind code | So a US grant and its EP sibling are never confused. |
| Publication and filing dates | The filing date is what a date bar is enforced against. |
| Family | The simple family, so one invention filed in two offices reads as one result. |
| CPC classification | Every symbol, with the primary one marked. |
Where else a search reaches
The corpus above is what we hold. These are the services a search calls when it needs something we do not, and the models that do the reading. Full text is fetched free first and paid last, and the models are separated by what each is good at rather than by who sells them, so one provider being down or out of quota degrades a search rather than stopping it.