After receiving the notice from the court, don't panic. You need to be clear about the following points: First, you need to find out whether it is really infringement. This is the most important thing to answer the lawsuit. First, it is necessary to find out whether the other party really has exclusive rights. Sometimes, because the annual fee is not paid on time, or the other party's patent has some problems and does not meet the requirements of patent application, the exclusive right of the other party is not protected by law. These all need to be reviewed. Secondly, we should compare our products with patents and pay special attention to the technical characteristics in patents. If our products do not meet these characteristics, it can be used as a reason for non-infringement defense. Second, if there is real infringement, we should actively bear the tort liability. Generally speaking, it is necessary to stop the infringement, eliminate the influence and compensate for the losses. Third, it is suggested to entrust a professional lawyer to deal with the alleged infringement. After all, professional lawyers have a clearer grasp of the key points in the case. Its professional ability can improve its chances of winning the case.