Country Coverage and Kind Codes

Derwent World Patents Index Coverage

Clarivate Analytics takes data from 52 sources (50 patent-issuing authorities and 2 journal sources) to create Derwent World Patents Index (DWPI) — the world's most comprehensive collection of professionally abstracted and annotated patent documents.

DWPI now covers more than 34.7 million inventions (Basic Records/patent families) detailed in over 72.7 million patent documents (April 2017).

Enhance your understanding of DWPI coverage by downloading the PDFs below and discover:

  • An overview of the patenting processes of 50 patent-issuing authorities (and two journal sources) worldwide. If you need further information, please use the links to the individual Patent Office websites, as provided.
  • The extent to which Clarivate Analytics covers patents from each patent-issuing authority.
  • Patent number and application number formats for Derwent Innovation and the key online hosts: ProQuest Dialog, Questel and STN.

Download the free PDFs for each patent authority and journal source covered in DWPI below:

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