DEPATISnet - database for online searches on patent publications from around the world

DEPATISnet is the database of the German Patent and Trade Mark Office for online searches on patent publications from around the world. It includes the internal DEPATIS electronic document archive of the office (German patent information system). For detailed information on the available data click here.

Choose a search mode:

  • Basic
    Select the Basic mode if you are a newcomer or have little searching experience. It has an easy-to-use intuitive search interface.
  • Advanced
    The Advanced search allows you to search in different search fields and to combine the selected fields according to your needs.
  • Expert
    The Expert mode is recommended for users experienced in patent searches. This mode allows to create more complex search queries.
  • Ikofax
    The IKOFAX mode is suitable for users proficient in the fields of IKOFAX syntax and the DEPATIS database system.
  • Patent family
    Via the document number you can ascertain patent family members (also possible in any result list).


Claim tree (30.01.2023)

For German patents / utility models, DEPATISnet now offers the option of displaying the patent claims / protection claims in a tree structure.
You can access the claim tree from an action menu in the bibliographic data.

all news

Maintenance work

Dear Sir or Madam,
due to urgent maintenance on the systems of the DPMA, on 31 March 2023 in particular the

  • DPMAdirekt Web
  • DPMAdirekt Pro
  • DPMAregister
  • DEPATISnet

will not be available from 10:30 a.m. to probably 2:30 p.m.

International Patent Classification (IPC) as the basis of a prior art search.

You can use IPC symbols for your patent or utility model document search. The IPC search does not provide patent documents per se. If you have found a useful classification place in the IPC you can transfer this symbol by a single click on the magnifying glass icon directly into a search query in DEPATISnet. The search will open in a new window with the IPC symbol in "All IPC fields".

For background information on the IPC click here.

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For questions on databases and search techniques

Expert information on IP rights is available from the enquiry service

Tips on searching