*** is the same as the defendant and *** is the same as the plaintiff. They are like two sides of a coin. When discussing the subject of trademark infringement, it is easy to relate to issues such as the basis and principles for the establishment of *** and the defendants. In the practice of trademark infringement, there are direct and typical trademark infringements such as printing infringing trademark logos, infringing the exclusive rights of service marks, manufacturing and selling goods that infringe the exclusive rights of trademarks, as well as indirect and atypical acts of aiding and abetting trademark infringement. Trademark infringement, such as providing warehousing, transportation, mailing, concealment and other convenient conditions for trademark infringement. When several defendants commit the above-mentioned acts, their infringing acts may occur in areas under the jurisdiction of the same court, or they may not occur in areas under the jurisdiction of the same court. If there are many defendants involved in the same region, whether they must be listed as co-defendants with ***, and if they are in different regions, whether they need not be listed as co-defendants with ***. These issues have always been controversial in practice. The practice in trial practice Nor is it uniform.