I agree with this opinion: The right of name is an international right of man, it earns a precedence of trademark rights limited to national territories. The Internet is “no space free of rights”, indeed, but it isn't a “front garden” of each single nation, too ! For trademark rights, the Internet is a space of its own with its own priorities.
I myself tried to protect the name of my WEB site ('Hemmerling') by registration as trademark. Maybe it helps?
“Mit der Integration der Patente und Gebrauchsmuster in unseren neuen Online-Service DPMAregister haben wir die Datenbanken DPINFO und DPMApublikationen zum 31. Mai 2011 eingestellt”.
The Industrie-und Handelskammer (IHK) maintains a non-official database with the contents of the official german register of trading associations “Handelsregister”. The IHK does not provide an online version, but may grant informations for a small fee. Please contact the local office of the IHK in your german hometown ! The trade register “Handelsregister”, maintained by the german administrative authority “Amtsgericht”, lists all companies registered for business in Germany.