Unlike other forms of Intellectual Property, a trademark can be indefinite. A trademark has the potential to last indefinitely as long as the owner continues to use the mark. However, regular documents need to be filed in order to keep your federal protection. The United States Patent and Trademark Office (USPTO) requires the trademark holder to file an Affidavit between the fifth and sixth year after the date of registration. Failure to file an affidavit may result in the cancellation of the trademark registration.
The USPTO also requires a renewal every ten years. The renewal needs to be submitted in the ninth year. It is important to remember the date because the USPTO does not send you a reminder. If you hire a professional trademark attorney, they will monitor and remind you of the deadlines. Upon your approval they will file the necessary documents for you.