Strong trademarks refer to trademarks with strong marking and the trademark words or graphics themselves have no actual meaning; such as "s0NY", Haier, etc. On the contrary, trademarks with weak marking and strong narrative, Wenyu or A trademark that has a certain practical meaning if the graphic itself also marks an actual object or platform is called a weak trademark. Such as "Great Wall", "Huangshan", "China Gate", "Guangming", etc.

Grade trademarks refer to a series of trademarks used by the same company on similar goods to indicate different characteristics and qualities of the goods. The purpose of this kind of trademark is to distinguish the quality, specification level and grade of this series of goods, so that consumers can make choices based on their own economic ability, consumption habits, etc. This is a trademark that an enterprise consciously uses in its operations and is recognized by the market.

In order to prevent others from using the trademark on different categories of goods, the owner of a well-known trademark registers his trademark separately on non-similar goods. This kind of trademark is called a defensive trademark. my country's Trademark Law has no clear provisions on this type of trademark. According to international practice, such trademarks are generally difficult to register, but once registered, they will not be canceled by the trademark authority because they are idle.