A trademark is a legally protected symbol, word, phrase, design, or combination thereof that distinguishes and identifies the source of goods or services provided by a particular company or individual. It serves as a unique identifier for a brand and helps consumers differentiate between products or services in the marketplace. Trademarks are essential for protecting intellectual property rights and preventing others from using similar marks that may cause confusion among consumers. By registering a trademark, the owner obtains exclusive rights to use and protect that mark within the specified jurisdiction.