https://www.epo.org/en/service-support/faq/law-practice/unitary-patent/register-unitary-patent-protection/how-can-i-0
How can I request a change of name for the proprietor of the Unitary Patent?
You can request a change of name for the proprietor of the Unitary Patent following the same procedure as for European patent applications.
The request must be filed in writing; no fee is due. Evidence must be provided, e.g. an extract from the commercial register.