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Defensive trademark: refers to goods (services) or similar goods (services) of different categories other than the goods (services) or similar goods (services) approved for use by a well-known trademark owner. Several identical trademarks are registered on goods or services to prevent others from registering and using the same trademark on these categories of goods or services. The original trademark is the main trademark, and the remaining trademarks are defensive trademarks. For example, Red Dragonfly has expanded its trademark from footwear to other areas. So as not to ruin your reputation.

Joint trademarks generally refer to several similar trademarks registered by the same trademark owner on the same or similar goods. Among these trademarks, the one registered first or mainly used is the main trademark, and the rest are joint trademarks. For example, "White Rabbit" is registered with "Little White Rabbit", "Big Flower Rabbit", "Big Gray Rabbit" and "White Rabbit" at the same time.