a product can be registered with multiple trademarks, but the application procedure must meet the standards prescribed by law, and it can only be applied for as a trademark after legal procedures. Therefore, I will introduce you to the knowledge about how many trademarks a product can have and its related aspects, hoping to help you solve the corresponding problems. A product can have several trademarks, and two or more trademarks can be registered for the same commodity. Whether an enterprise or an individual applies for a registrar, it may apply for registration of two or more trademarks at the same time. Second, the subject of trademark rights 1. The concept of the subject of trademark rights The subject of trademark rights (the trademark owner) refers to a natural person, legal person or other organization that enjoys the trademark right for commercial marks that distinguish goods or services according to the trademark law. 2. The types of the subject of trademark rights are based on the form of the subject, and the subject of trademark rights is divided into natural persons, legal persons and other organizations. The Trademark Law stipulates that if a natural person, legal person or other organization needs to obtain the exclusive right to use a trademark for its goods or services in production and business activities, it shall apply to the Trademark Office for trademark registration. Two or more natural persons, legal persons or other organizations may apply to the Trademark Office for the registration of the same trademark, and both enjoy and exercise the exclusive right to use the trademark. According to the way of obtaining trademark rights, the subject of trademark rights can be divided into the original subject and the successor subject. The original subject is the trademark registration applicant approved and registered by the trademark administrative department, and the successor subject is the subject who obtains the trademark right through inheritance and assignment. Third, the types of trademarks According to different standards, trademarks can be divided into different types. (1) Commodity trademarks and service trademarks Commodity trademarks refer to the trademarks used by commodity producers on the commodities they produce or operate. When used in commodities, it means that trademarks are attached to commodities or packaging, containers and transaction documents of commodities, and used in advertising, commodity exhibitions and other commercial activities. Service trademarks are trademarks used by operators to distinguish the services they provide to others. The ways of using service trademarks include: directly using them in services, such as service introduction manuals, photos of service places, staff costumes and other documents related to services; Use trademarks in advertisements. (2) Collective trademarks and certification trademarks A collective trademark refers to a sign registered in the name of a group, association or other organization and used exclusively by members of the organization in commercial activities to show the membership of users in the organization. The function of a collective trademark is to show users that the enterprises that use the trademark have the same characteristics. An enterprise that uses a collective trademark has the right to use other exclusive trademarks at the same time. A certification trademark refers to a mark controlled by an organization that has the ability to supervise a commodity or service and used by units or individuals outside the organization to prove the origin, raw materials, manufacturing methods, quality or other specific qualities of the commodity or service. The significance of proving a trademark is to show consumers that its products meet the prescribed conditions or standards. A mark indicating that a commodity comes from a certain region, and that the specific quality, reputation or other characteristics of the commodity are mainly determined by natural or human factors in the region is a geographical mark, which can be registered as a collective trademark or a certification trademark. (3) Joint trademarks and defensive trade mark joint trademarks refer to a trademark owner who registers several similar trademarks on the same commodity or several identical or similar trademarks on different commodities in the same category. These mutually similar trademarks are called joint trademarks. Among these trademarks, the first registered or mainly used is the main trademark, and the rest are joint trademarks. Defensive trade mark refers to the same trademark registered by the same civil subject on several commodities of different categories. The main trademark is registered first, and the other trademarks are defensive trade mark. Where a registered trademark is transferred, the trademark registrant shall transfer the similar trademark registered on the same commodity or the same or similar trademark registered on similar commodities. Therefore, when the main trademark is transferred, the joint trademark and defensive trade mark should be transferred together to avoid confusion among consumers. (4) Registered trademarks and unregistered trademarks refer to trademarks approved and registered by trademark management agencies according to law. The registration of a trademark requires legal conditions and procedures. In countries with a trademark registration system, once a trademark is registered, it gains the exclusive right to use the registered trademark and the prohibition right to exclude others from using the same or similar trademark on the same or similar goods. An unregistered trademark refers to a trademark that has not been registered by the state competent authority and the user does not have the exclusive right to use the trademark. Unregistered trademarks do not enjoy the exclusive right to use trademarks, but they can be used, and they can enjoy the influence and reputation generated by their use, and are protected by the Trademark Law and the Anti-Unfair Competition Law. (5) Well-known trademarks Well-known trademarks refer to trademarks that are well known to the relevant public in China. It is pointed out in the Provisions on the Recognition and Protection of Well-known Trademarks that the relevant public includes consumers related to the use of certain goods or services marked by trademarks, other operators who produce the above-mentioned goods or provide services, and sellers and related personnel involved in distribution channels. Compared with general trademarks, well-known trademarks have their own particularity. General trademarks can only be protected on similar goods or services, while registered well-known trademarks can not only be protected in the same category, but also be protected across categories. According to the law, two or more trademarks can be registered for the same commodity. Whether an enterprise or an individual applies for a registrar, it may apply for registration of two or more trademarks at the same time.