I agree that the names are close, but technically they are written and represented differently, which makes this a difficult case. I would have to say that yes, there is a trade-marking issue. When speaking the names aloud, they are obviously identical and in my opinion, it is too close of a resemblance.
I would say that regulations could help if some sort of database was kept so that people could check beforehand to see if a name or slogan has already been taken, sort of like when you make a name on a message forum. I think that this is an easy step that could clear up a lot of confusion and headaches.