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Once a trademark or service mark is placed on the U.S. Patent and Trademark Office's (USPTO's) Principal Register, the owner receives a certificate of registration good for an initial term of ten years. The registration may lapse before the ten-year period expires, however, unless the owner files a statement within six years of the registration date (called a Section 8 Affidavit) stating that the mark is still in use in commerce.
The original registration may be renewed indefinitely for additional ten-year periods if the owner files the required renewal applications (called a Section 9 Affidavit) with the USPTO. Failure to renew a registration does not void all rights to the mark, but if the owner fails to re-register, the special benefits of federal registration will be lost.