A federal registration typically provides legal rights to the mark throughout the entire United States.
Powersquid is registered with the U.S. Trademark Office for electrical extension cord sets having multiple outlets. REGISTERED TRADEMARK 3,099,238
A trademark can be used to help in protecting the "commercial embodiment" of a patented item.
Currently, U.S. registered marks must be renewed between the 5th and 6th year after registration as well as every 10 years from the date of registration. If properly maintained, trademarks may last forever.
Continued use of the mark in commerce is also a requirement for maintaining legal rights in a mark.
Policing infringers of the mark is also required to maintain rights in a mark. If a mark owner is aware of another party using the same or substantially similar mark for the same or similar goods or services, and if the owner of the mark does not stop the infringer after a reasonable period of time, the mark could be deemed to be unenforceable.