The Czech Republic apparently successfully sued the owners of tschechische-republik.ch, tschechische-republik.at and tschechische-republik.com (Urteil des Landgerichts Berlin vom 26. 09. 2006, Az. 9 O 355/06 ruling [German]). According to Domainblog, the Czech Republic was awarded these names although they do not exactly correspond to its actually identity.
I am aware of other proceedings targeting the owners of similar domains, but where the name of the Republic is written in French.