The patents and copyrights do expire a set period of time but the trademarks do not.
However, the owner must continue to use it in commerce after the United States Patent and Trademark Office (USPTO) grants the registration.
The patents and copyrights do expire a set period of time but the trademarks do not.
However, the owner must continue to use it in commerce after the United States Patent and Trademark Office (USPTO) grants the registration.