According to the Classification of Goods and Services for Trademark Registration (hereinafter referred to as "Classification Table"), all goods and services are currently divided into 45 categories. After an enterprise registers a trademark in one category, it will register the same trademark in other categories that the enterprise may set foot in in the future, so as to expand its business scale and reserve trademarks. For example, if the word "Zhongyun" is used as a trademark, after the 32nd category of beer and mineral water is registered on the classification table, the trademark "Zhongyun" will be registered on the liquor, red wine and dairy products that the enterprise can set foot in in the future, and then the trademark "Zhongyun" will be registered on the 33rd category of liquor, red wine and 29th category of dairy products.

2. defense of the same category

in order to prevent others from applying for similar trademarks on goods (or services) of the same category, trademark owners register trademarks with similar sounds, homophones or glyphs to the original trademarks in the same industry and category. For example, Alibaba registered trademarks such as "ali dad" and "Ali Mama". Laoganma registered trademarks such as "Laogandie" and "Laoganniang". The White Rabbit has registered more than 1 similar trademarks such as Big Grey Rabbit, Big Black Rabbit, Big Flower Rabbit, Small White Rabbit, Golden Rabbit and Silver Rabbit.

defensive trade mark's role:

The registration of defensive trade mark is of substantial strategic significance to some enterprises that are original in trademarks and have invested heavily in publicity and advertising, and strive to create a well-known brand image. By registering more than one defensive trade mark, enterprises have achieved the goals of reducing the risk of brand counterfeiting, reducing the cost of trademark rights protection and preventing malicious competition from other enterprises. However, the registration of defensive trade mark is not once and for all, and the following two overdue cases will be registered.

But defensive trade mark is not effective for a long time. It is the same as a common trademark. If it is not used within three years. According to the second paragraph of Article 49 of the Trademark Law, if the use of a registered trademark is stopped for three consecutive years, its registered trademark shall be revoked by the Trademark Office. If defensive trade mark fails to renew the trademark on time within the time limit, according to Articles 39 and 4 of the Trademark Law, the trademark will also be cancelled by the Trademark Office.