Legal analysis: 1. As far as the ownership of legal departments is concerned, intellectual property law still belongs to civil law and is a special law of civil law. 2. Most of the basic principles, systems and legal norms of civil law are applicable to intellectual property rights. The norms of public law and procedural law in intellectual property law serve to confirm and protect the private rights of intellectual property rights and do not occupy a dominant position.

Legal basis: Article 57 of the Trademark Law of People's Republic of China (PRC) stipulates that any of the following acts is an infringement of the exclusive right to use a registered trademark: (1) Using a trademark identical to its registered trademark on the same commodity without the permission of the trademark registrant; (2) Without the permission of the trademark registrant, using a trademark similar to its registered trademark on the same kind of goods, or using a trademark identical with or similar to its registered trademark on similar goods is likely to cause confusion; (3) selling goods that infringe upon the exclusive right to use a registered trademark; (4) Forging or unauthorized manufacturing of registered trademark marks of others or selling forged or unauthorized registered trademark marks; (five) without the consent of the trademark registrant, the registered trademark is changed and the goods with the changed trademark are put on the market again; (6) Deliberately facilitating the infringement of the exclusive right to use a trademark of others and helping others to commit the infringement of the exclusive right to use a trademark; (seven) causing other damage to the exclusive right to use a registered trademark of others.