The subject of infringement refers to the person who commits the infringement, including natural persons and legal persons. The actor's behavior must be aimed at production and operation, which objectively shows that the actor violated the provisions of the patent law and infringed on the patent rights of others by unfair means. In practice, the subject of tort is not necessarily the subject of tort liability. For example, parents of minors may be liable for patent infringement of minors, and employers may be liable for patent infringement of their employees taking advantage of their positions.