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Same question but what about trademark or registered symbols? You see them on even store signs and I've always wondered if they're the least bit helpful. Is Kellogg's really worried you'll try to steal their logo if they don't put (tm) after it?



Unlike copyright, trademarks have to be defended to remain valid. If you let your trademark become too generic you can lose it [0].

[0] https://en.wikipedia.org/wiki/Generic_trademark


AFAIK you are required to put it if you intend to use it as a trademark.




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