I agree with you. Its a chance that is taken. I do beleive that it is unlikely that someone else will have the same mark/name/word as you for the same category. For instance there may be crown resturants,crown paints,crown furniture etc and all are different trademarks that may be owned by different companies. On the other hand it would be difficult to use a name like Kodak for any type of business, even one not related to pictures and films because the name is unique, as is reebok. For me it all comes down to how unique what you have is. My other trademark I had in mind came up when I did a search. I still could have used it, but it would have to be in an unrelated category.