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Bibliographic coverage
In February 2005, esp@cenet® held data on 50 million patents from 71 countries. A total of 25.6 million of these patents have a title, 26.2 million have an ECLA class and 16.6 million an abstract in English. 33.6 million documents contain the name of the applicant(s).
The following table gives an overview of the availability of the PCT minimum documentation in the worldwide database:
|
Country
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Facsimiles from
|
Abstracts from
|
European Classification (ECLA)
|
| CH |
1888, from CH1 onwards |
1970 |
1920 |
| DE |
1877, from DE1 onwards |
1970 |
1877, from DE1 onwards |
| EP |
1978 |
1978 |
1978 |
| FR |
1920 |
1970 |
1902 |
| GB |
1920 |
1918 |
1909 |
| US |
1836, from US1 onwards |
1970 |
1920 |
| WO |
1978 |
1978 |
1978 |
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for details of bibliographic data coverage.
For more information on patent searching, see the following pages:
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