Grade trademark refers to the same trademark or different trademarks used on goods of different quality, specifications and grades. Some of these trademarks have the same names, but the graphics or text fonts are different. Some graphics are the same, but in order to distinguish the quality of different goods, different colors, different papers, different printing techniques or other signs are used to distinguish them, while others are distinguished by different brand names or graphics.

The function is to distinguish similar goods with different specifications and different qualities produced by the same enterprise, so that consumers can identify and buy them. For example, the tires produced by Qingdao Tongtai Rubber Factory use trademarks such as "Camel", "Jin Lu" and "Workers and Peasants" due to different specifications. According to the provisions of China's Trademark Law, grade trademarks can be registered, transferred or licensed to others. The cancellation or revocation of a trademark does not affect the existence of other trademarks, so the series of trademarks in the grade trademark are relatively independent.