United Kingdom Intellectual Property Office

Accepted means of filing

Online: as a WASP created by PCT-SAFE or EPO-OLF client software

On physical media: as a WAD or WASP file created by PCT-SAFE or EPO-OLF (on 3.5” diskette or CD-R)


Accepted digital certificates

Valid certificates issued by one of the following Certification Authorities (CA):

  • CA for EPO


Accepted formats

This Office accepts the filing of the application body (description, claims and abstract) in character-coded (e.g. XML) and image format (e.g. PDF). It also accepts the inclusion of application documents in any pre-conversion format according to Administrative Instruction 706.

Sequence listing should preferably be filed, as a separate part of the description, in WIPO's ST.25 text format (no additional fees).



Help desk available between 08.00 and 17.00 hours UK time Monday to Friday excluding English and Welsh bank holidays. The help desk may be contacted:

  • by phone at +44 (0)1633 813500
  • by fax at +44 (0)1633 814907
  • by e-mail at eolfsupport@patent.gov.uk.