No. There would no factual reason to do so either, since mueller.de and müller.de are two completely different domains. It is just like bauer.de, which has nothing to do with baür.de, or poet.de and pöt.de, which are not the same either. Why then should the holder of mueller.de be given any precedence over Germany’s myriad of other Müllers? Such a procedure would go against the clear principle that DENIC has established that a domain goes to whoever applies to register it first – i.e. first come, first served, with no exceptions.
In this context, we should like to remind you of the clear rule that it is domain applicants themselves who are responsible for ensuring that they do not infringe any rights of others and that they expressly confirm this in applying to register a domain. You’ll find more details about this in DENIC’s Domain Guidelines and in its Domain Terms and Conditions.