Several situations in which a patent right cannot be granted:
(1) Inventions and creations that violate national laws, social ethics or hinder public interests. Such as drug tools.
(2) inventions that violate scientific laws. For example, a perpetual motion machine does not conform to the law of conservation of energy and cannot be patented.
(3) scientific discovery. For example, an astronomer discovered a new star through observation; Newton's discovery of the law of universal gravitation and so on all belong to the objective existence of nature and cannot be patented.
(4) Rules and methods of intellectual activities. For example, a new way of playing cards or some kind of chess.
(5) Diagnosis and treatment of diseases. For example, an old Chinese doctor can diagnose some diseases that are difficult to diagnose through special pulse-taking, and treat them with acupuncture and special acupoint massage therapy. You cannot apply for a patent, but you can apply for a patent for mass-produced drugs, devices and their preparation methods for diagnosing or treating diseases.
(6) Species of animals and plants. Can be protected by other laws and regulations other than the patent law. For example, in China, there are Regulations on the Protection of New Plant Varieties, which are specially used to protect new plant varieties.
(7) Nuclear transformation methods and substances obtained by nuclear transformation methods. It is related to the vital interests of national defense, economy, scientific research and public life, and should not be monopolized by units or private individuals, so patent rights cannot be granted.