Oh and to the other points: Business names are not very exclusive. Defending these names (in USA) requires at least a Trademark. Although a Service Mark may

Oh and to the other points: Business names are not very exclusive. Defending these names (in USA) requires at least a Trademark. Although a Service Mark may have some sway. If there is some conflict but the room for confusion is small (and your brand is not dominant) there can be co-existence. Like 'Mikes Hot House' is a sauna company in Minnesota but 'Mikes Hot House' also has the best gumbo in Louisiana. However, if the brand is dominant it changes (mostly due to legal budget). That is how Microsoft gets up in everyone's face about Microsoft or Windows - or even similar names like Lindows.