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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

December 2019

New Korean Patent Full-Text Database KRFULL released

STN User Meetings

Munich, 20.05.2020

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Application Numbers for U.S. Patents in CA/CAplus and USPATFULL/USPAT2 Enhanced with U.S. Series Code Information

30. September 2013

Effective September 28, 2013, U.S. application numbers from series 13, design applications from series 29, and provisional patent applications from series 60 and 61 will include series codes. The enhancement applies to:

  • CA/CAplus file searches and displays
  • MARPAT and CASREACT displays
  • USPATFULL and USPAT2 searches and displays

The inclusion of series codes ensures uniqueness of U.S. application numbers, allowing for more precise searching. It also results in better cross-file transfers among the CAS databases, the USPAT databases, INPADOCDB and the Derwent World Patent Index. At this time, this enhancement applies only to the classic STN platform, but will be implemented in new STN in a future release.