Trademarks do come with rights. If you are going to use a good trademark, you don't want others to take that trademark from your hands and to profit from it. The chief right of a trademark is that they can not be used by others to promote the sales of their product. Similarity in trademarks has always proved to be a hassle. But trademark rights protect you from that too.

Keep this in mind that a trademark does not prevent someone from making a product or offering a product that is similar to your own. This is considered a patent. Even those that offer services that are like your own won't breach on your trademark rights as owner if they have a clearly different mark.