1, technical means does not exist, and it is still an imaginary technical means.
2. Inventions that cannot be realized or are harmful to human beings, such as inventions that violate ethics or public interests.
3. Inventions involving genetic engineering or genetic modification of human beings, animals or plants.
4. Inventions that have been published, circulated abroad, exhibited or publicly published on other occasions before the invention application date.
5. Technologies that can be realized through common knowledge, common sense, skills or routine operations, or inventions that only involve simple improvement or change of existing technologies.