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February 2020

New legal event data from Croatia, Italy, and Poland in INPADOCDB and INPAFAMDB

January 2020

Changes to Derwent WPI Update numbering and the total number of annual DWPI updates

December 2019

Derwent World Patents Index: Manual Code revision 2020

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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