Trademark protection can last indefinitely as long as the trademark is actively used in commerce and the renewal requirements are met. In some jurisdictions, trademarks can be renewed indefinitely as long as they continue to be used and the renewal fees are paid at the required intervals.
As long as the trademark owner fulfills the obligations for renewal, the protection can be extended indefinitely, allowing the trademark to be safeguarded for a significant period of time. However, it is important to note that trademark protection can be lost if the mark is abandoned, not actively used, or if the renewal requirements are not fulfilled according to the specific regulations of the jurisdiction.