Trademark (English Trade Mark, abbreviated as logo) refers to the use by producers and operators on goods and their packaging or services in order to distinguish their own goods or services from those of others. A visible mark on a mark consisting of text, graphics, letters, numbers, three-dimensional logos and color combinations, as well as a combination of the above elements.

The earliest known trademark in the world is the "Jinan Liu Family Kung Fu Needle" from the Northern Song Dynasty, which dates back nearly a thousand years, and is marked with a white rabbit pattern.

The World Intellectual Proporty Organization (WIPO) defines a trademark as: a trademark is a sign used to distinguish the goods of an industrial or commercial enterprise or such an enterprise group.

The International Association for the Protection of Industrial Property (AIPPI) defined trademarks at the Berlin Congress: A trademark is a mark used to distinguish goods and services provided by individuals or groups.

The French government stated in its Trademark Law that any tangible mark used to identify the products, articles or services of any enterprise may be regarded as a trademark.