Hypothetical defense: It means that there is no ongoing illegal infringement objectively, and the perpetrator subjectively mistakenly believes that an illegal infringement is taking place, and the imaginary infringer has been properly defended.
Which of the following are not hypothetical defenses?
 A rides home late at night when a person suddenly appears on the side of the road. He thinks he has come to rob, so A beats him up, but only to find that it is a middle school classmate who wants to make fun of him