Patent Application via eOLF

You can submit Danish and international patent applications via eOLF. The service is free of charge, but you must install software which will then be used together with electronic identification (soft certificate). This means that the filing process is safe and that data is transmitted in encrypted form.

Contact Customer Service

How to use eOLF

In order to use eOLF for electronic filing of  patent applications, you must install EPO's Online Filing package.  

  1. Start by installing EPO’s Online Filing software.
    Install 

  2. Order a soft certificate from Customer Service. 
    See guide on ordering a soft certificate 

  3. When you have received and downloaded your your soft certificate, you must sign up to our filing server before you submit applications.
    Sign up to filing service

  4. Please check that your soft certificate works via the danish submission server. If your card is registered correctly, you will receive the message ”This is the Online Filing receiver URL. Your smart card certificate is working correctly and you can file to this URL using the Online Filing client.” 
    Check certificate

How to use your eOLF

  • If you have new soft certificate, please remember to register it on our server via https://eolf.dkpto.dk/olf/enrol

  •  Your eOLF programme must be kept updated. When you start the programme, you will receive a message if there are updates.

Need help?

If you have questions regarding filing of applications via eOLF, you are most welcome to contact us. Our phoneline is open Monday -Thursday 9 am to 4 pm and Friday 9 am to 3 pm  

Contact Customer Service