While setting up a new app, I received the message "The app name you entered is already being used". I changed the language from English (United States) to English (Canada) and then it was accepted. For the record, my corporation is located in Canada so that's ok, and an exhaustive global app store search came up with nothing similiar.
This seemed good at first but now I'm a little freaked out that this will be problematic in the future. I plan on trademarking the name soon but the process takes about a year. This is my first app so everything is new to me. Should I be worried?