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There is also an issue like this running against SuSE by this "Freiherr". You can read about at http://heise.de/newsticker/data/odi-07.01.02-000/ (german).
Please note the lawyer Guenter Freiherr von Gravenreuth has registered the trademark Obelix. He has done so for "Les Editions Albert Rene" the owner of the trademark. The current charge against MobiliX is not done by him.
Werner