A person with a gender-neutral given name(s) and surname goes to the registry office where their birth is registered and presents it with confirmation that the reassignment treatment has been completed.
The health service provider is required to deliver a gender reassignment certificate to the registry office within 3 working days of the date of the reassignment.
The registry office then makes an additional entry in the register of births and, through the Ministry of the Interior, changes the individual’s birth certificate and issues a new birth certificate. The birth certificate retains the same gender-neutral given name and surname, but now contains the new gender and a new personal identification number.
The individual may then apply to the registry office in the place where they are permanently resident, free of charge, for permission to change their given name(s) and surname to new ones reflecting their reassigned gender. That registry office is required to notify this to the registry office recording the individual’s birth, which issues a new birth certificate with the individual’s new given name(s) and surname, together with a new birth surname matching the newly acquired surname.
If a person still has their original given name(s) and surname, the registry office enters their surname in the register in a form corresponding to their new gender in accordance with the rules of Czech grammar. The person must choose a new given name (in line with their new gender). If they fail to do so, the registry office does not enter the given name(s) in the register of births, but instead reports this to a court, which then decides on the given name.