1. Infringed object: that is, the infringed patented product or method must be protected by the patent law, and the implementation of expired, invalid or abandoned patents does not constitute infringement;
2. There are legal infringements: such as manufacturing, using, selling or promising to sell or import other people's patented products, or using other people's patented methods to use, sell or import products directly obtained by this method;
3. For the purpose of production and operation: that is, for the purpose of making profits, if the patented technology is used exclusively for scientific research and experiments, or to manufacture patented products or patented methods and use them for non-profit purposes such as personal hobbies or personal use, it does not belong to patent infringement;
Legal basis: People's Republic of China (PRC) Patent Law.
Article 60 The patent administration department in the State Council shall promptly notify the patentee of the decision to grant a compulsory license for exploitation, and register and announce it. The decision to grant compulsory license shall stipulate the scope and time of implementation according to the reasons for compulsory license. When the reasons for compulsory license are eliminated and no longer exist, the administrative department for patent in the State Council shall, at the request of the patentee, make a decision to terminate the compulsory license after examination.
Article 63 If the patentee refuses to accept the decision of the patent administrative department of the State Council on compulsory license, and if the patentee and the unit or individual that obtained the compulsory license refuse to accept the decision of the patent administrative department of the State Council on compulsory license fee, they may bring a lawsuit to the people's court within three months from the date of receiving the notice.
Article 65 Where a patent is exploited without the permission of the patentee, that is, the patent right is infringed and a dispute arises, the parties concerned shall settle it through consultation; Unwilling to negotiate or failing to do so, the patentee or interested party may bring a suit in a people's court or request the administrative department for patent affairs to handle it. When the administrative department for patent affairs finds that the infringement is established, it may order the infringer to stop the infringement immediately. If a party refuses to accept the decision, he may bring a lawsuit to the people's court in accordance with the Administrative Procedure Law of the People's Republic of China within 15 days from the date of receiving the notice of handling. If the infringer fails to prosecute and stop the infringement upon expiration of the time limit, the administrative department for patent affairs may apply to the people's court for compulsory execution. At the request of the parties concerned, the administrative department for patent affairs may mediate the amount of compensation for patent infringement; If mediation fails, the parties may bring a lawsuit to the people's court in accordance with the Civil Procedure Law of People's Republic of China (PRC).