provided by
provided by FIZ Karlsruhe

New on STN

November 2019

German Patent Full-Text Database DEFULL enhanced

October 2019

INPADOC with more current and complete Japanese legal status information

October 2019

Third 2019 update to Emtree(TM) now available on STN(R)

Meet us at

IP-Service World, 25.-26. Nov, Munich

STN User Meetings

Madrid, 03.12.2019
Erfurt, 04.12.2019
Prague, 04.12.2019
Barcelona, 04.12.2019

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 Combination Sets are now completely available in Derwent World Patents Index

01. March 2019

CPC combination sets are groups of CPC symbols linking multiple features of an invention. Patent examiners assign these combination sets in special technical fields to classify different aspects of the main inventive feature. Since July 2017, CPC combination sets have been made available for DWPI updates, while backfile data have been included in the course of 2018/2019. This powerful CPC feature can now be used for more than 1 million DWPI records (2019/02). Details about the new retrieval capabilities and coverage aspects can be found here:

http://fizweb-vmeditorcms.fiz-karlsruhe.de:8080/fileadmin/be_user/STN/pdf/search_materials/patents/CPC_combination_set_DWPI_032019.pdf