A trademark is a distinctive sign that identifies a commodity or service or a specific individual or enterprise related to it. When a brand or part of a brand is registered in the relevant government departments according to law, it is called a trademark. It can be graphics or text, and it can also be expressed by sound, smell or three-dimensional diagram. Trademarks are protected by law, and registrants enjoy exclusive rights. Famous trademarks in the international market are often registered in many countries. There are registered trademarks and unregistered trademarks in China. The former is a trademark protected by law after being registered by relevant government departments, while the latter is not protected by trademark law.

The origin of trademarks can be traced back to ancient times, when craftsmen printed their signatures or marks on their works of art or practical products. Today, these signs have developed into a worldwide trademark registration and protection system.