What is the maximum duration that registered trademarks can remain valid?

Registered trademarks can remain valid indefinitely, provided that they are properly maintained and renewed. This means that as long as the trademark owner continues to use the trademark in commerce and files the necessary renewal applications at specified intervals, the trademark protection can continue indefinitely.

Trademark law allows owners to benefit from their brand long-term, which is essential for maintaining the brand's identity and market position. Regular renewal and continued use of the trademark reinforce the rights of the owner, helping to prevent the mark from being considered abandoned or vulnerable to challenges from competitors.

Other options suggest fixed durations that do not take into account the indefinite nature tied to renewal. The option mentioning a 10-year duration refers to the initial renewal period in some jurisdictions, but without subsequent maintenance, the trademark could lapse. The option indicating 20 years addresses a misconception since it does not apply to trademark duration. The mention of a 5-year duration without use relates to abandonment laws rather than the maximum duration for which a trademark can be valid. Thus, understanding the need for continuous use and timely renewal is key to maintaining trademark rights indefinitely.