A trademark identifies the brand owner of a particular product or service. It also distinguish the goods of services of one enterprise from the other enterprises. Trademarks are protected by intellectual property rights.
The owner of a trademark may pursue legal action against trademark infringement. Most countries require formal registration of a trademark as a precondition for pursuing this type of action. The United States, Canada and other countries also recognize common law trademark rights, which means action can be taken to protect an unregistered trademark if it is in use. Still, common law trademarks offer the holder, in general, less legal protection than registered trademarks