This document defines trademarks and discusses the key aspects of trademark registration. It begins by defining a trademark as any sign that individualizes the goods of an enterprise and distinguishes them from competitors. It then discusses the different types of trademarks such as words, letters, devices, colors, signs. The document outlines the purpose of trademarks and considerations for choosing a trademark. It provides details on the trademark registration process including searching, applying, opposing, and registering a trademark. It also discusses international agreements related to trademarks and infringement.