Trademark: You assert that some word, jingle, logo, or other brand-related media is uniquely yours, and if someone else uses it you will sue them for infringement. You will lose if they can successfully argue the piece of media isn’t UNIQUELY yours.
Registered Trademark: You paid the government to investigate your claim that the piece of media is uniquely yours. They agreed. Now if someone infringes, it is VERY HARD for them to win because you have the government backing your claim up.
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