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January 2020

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Derwent World Patents Index: Manual Code revision 2020

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PATDPAFULL: Application and priority number formats enhanced

24. February 2010

In the German patent full-text database PATDPAFULL the standardization of application and priority numbers has been greatly enhanced, almost all numbers follow the STN standard formats. As a result, duplicate removal and crossfile searching with other patent files on STN is more reliable. Also, the search results of a multifile patent full-text search can be grouped into invention families more efficiently.