Quote:
Originally Posted by taustin
Trademarks have to be actively defended. If you find out someone is infringing, and you don't do anything about it, you can easily lose the trademark. This is the reason for so many stupid and offensive cease & desist letters from lawyers.
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As happened with trademarks like "Aspirin". It wasn't defended in the US, and lost its trademark status as a result. (It is still a trademark in Europe)