provided by
provided by FIZ Karlsruhe

New on STN

March 2020

STN Database Updates continue as usual

March 2020

European Patent Office warns about possible delays in data delivery due to the Corona Crisis

March 2020

First 2020 Update to Emtree Now Available on STN(R)

Meet us at

Copyright Day 2020, 05.May, Frankfurt
PATINFO 2020, 17.-19.Jun, Ilmenau
The 2020 AI-SDV Conference,
05.-06.Oct, Nice

STN User Meetings

Munich, 20.05.2020

This website uses cookies. Matomo is used for the usage analysis. By continuing to use the website, you agree to this. If you object to the usage analysis or would like to learn more about cookies, please click on the privacy policy. Close

CPC Thesaurus based on official CPC Scheme

21. October 2014

The CPC thesaurus feature available in STN patent databases is now based on the official CPC scheme, known as “the interleaved presentation of the CPC”. This presentation is the official and only presentation of the CPC scheme since September 2014. The major difference to the original scheme is that CPC codes of the 2000 series (e.g. A61K2039/505) are now integrated in the context of existing IPC main groups:

A61K0039-00/CPC
. A61K0039-0001/CPC
. A61K0039-0002/CPC
. A61K0039-0003/CPC
ooo
. A61K2039-505/CPC
. A61K2039-51/CPC
. A61K2039-54/CPC
oooo

Search tip for broad CPC searches:
Users who would like to include CPC codes of the 2000 series in a main group search should use the thesaurus functionality +NT to search the complete hierarchy, e.g.

=> S A61K0039-00+NT/CPC

The search statement A61K0039/CPC alone does not include the CPC codes of the 2000 series.
Background information can be found at:

http://www.cpcinfo.org/cpcSchemeAndDefinitions/ExplanationInterleaved.pdf