1. Inventions and creations that violate the law, social ethics or harm public interests. National laws refer to laws formulated and promulgated by the National People's Congress or the Standing Committee of the National People's Congress in accordance with legislative procedures. It does not include administrative rules and regulations. If the purpose of the invention is contrary to national laws, patent rights cannot be granted. For example, equipment, machines or tools used for gambling; drug paraphernalia, etc. cannot be granted patent rights. The purpose of the invention itself does not violate national laws, but if it violates national laws due to misuse, it does not fall into this category. 2. Scientific discovery. It refers to the revelation of objective phenomena, change processes, and characteristics and laws in nature. Scientific theory is a summary of the understanding of the natural world and a broader discovery. They are all extensions of people's understanding. These recognized substances, phenomena, processes, characteristics and laws are different from technical solutions to transform the objective world. They are not inventions and creations in the sense of patent law, and therefore cannot be granted patent rights. 3. Rules and methods of intellectual activities. Intellectual activity refers to the movement of human thinking. It originates from human thinking and produces abstract results through reasoning, analysis and judgment, or it must be used as a medium to indirectly act on nature to produce results. It is only The rules and methods that guide people to think, identify, judge and remember information do not constitute a technical solution because they do not use technical means or utilize natural laws, nor do they solve technical problems or produce technical effects. For example, traffic driving rules, grammar of various languages, speed algorithms or oral judgments, psychological testing methods, various games, entertainment rules and methods, music scores, recipes, chess scores, computer programs themselves, etc.