Patent Search Tools

Free tools at your fingertips for your patent search and research needs

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International PCT (WIPO) Patent Search

Access the WIPO (PCT). Search results open in new windows.

Patentscope - Simple Search

PCT Contracting states

National-stage deadlines

PCT Wheel

Calculate PCT Deadlines with the PCT Time Limit Calculator

PCT Applicants Guide (annexes include links to National Chapter info including national fees)

European (EPO) Patent Search - Esp@cenet

  • Espacenet number search:     Help · Register Alert
  • Search EPO Register: 
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The following formats are valid for your search on esp@cenet or EPOline:

  • Application numbers:
    • EP applications: a sequence of eight digits (e.g. 99203729)
    • PCT application number (e.g. for PCT/US/1998004141 please type WO1998US04141)
    • esp@cenet® data format (e.g. EP19990402065 or WO1998US04141)
  • Publication numbers:
    • EP (e.g. EP1023455)
    • WOyynnnnn for publications until WO0251230,
      WOyynnnnnn for WO02051231 - WO03107732,
      WOyyyynnnnnn for publications from 1 January 2004

UK Patent Office Search

Enter either a publication or application number (ensure text is entered in one box only) and select either Full or Current details
  • Quick Search  
  • Pulication/Application Number   

    • Publication Number: [[GBnnnnnnn or EPnnnnnnn - include leading zeros]]
      Application Number: [[GBnnnnnnn.c (1977 Act), GBnnnnnnn (1949 Act), EPnnnnnnnn or EPnnnnnnnn.c Application numbers]]

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IMPORTANT: The use of this site does not constitute the provision of legal advice and is intended for use as a supplement to other search tools only. The tools on this page are provided for information purposes only and their use does not guarantee that any search results are current, accurate or complete.

For specific advice relevant to a particular situation, please seek professional advice from a patent attorney or patent agent in your country.