The EUP date can be extended by purchasing a corresponding extension. Each EUP extension adds one year to the previous EUP date. Extensions are also possible when the EUP date is already several years in the past.
If that is the case, several extensions can be purchased whereas the EUP date increases by one year with every extension.
To periodically extend the EUP date of your licenses, some regions offer corresponding software maintenance and support contracts. Please contact your local sales representative for further information.
(List available here: https://www.iba-ag.com/en/contact/)