Can I apply for a patent for an invention?

Yes, but the condition for an invention not to be patented is 1, scientific discovery. Scientific discovery is only an understanding of natural laws, not an invention made by using natural laws. Can not be directly applied to production practice, does not have industrial practicability, so no patent right is granted. 2. Rules and methods of intellectual activities. It only guides people to think, identify, judge and remember the information expressed, and it does not use technical means, nor follows the laws of nature, and does not have the characteristics of technology, so it cannot be granted a patent right. 3. Diagnosis and treatment of diseases. The diagnosis and treatment of diseases are directed at living human or animal bodies, and cannot be used in industry. They are not inventions in the sense of patent law, so patent rights cannot be granted. 4. Animal and plant varieties. This refers to the animal and plant varieties themselves, not including the methods of producing animal and plant varieties. 5. Substances obtained by nuclear transformation. Because the substances obtained from nuclear transformation can be used for military purposes, patent laws and regulations will not grant patent rights for the vital interests of the country. 6. Design of the pattern, color or combination of the two of the plane printed matter. 7. Inventions and creations that violate laws, social ethics or hinder public interests.