Legal analysis: 1. The invention is novel. This refers to the invention-creation that has not been publicly published at home and abroad or publicly used by the publisher before applying for the patent right, and there is no case that others have not filed a patent application with the patent administration department of the State Council and issued patent application documents. This invention is creative. The so-called creativity means that this new invention has more outstanding characteristics and progress than the existing related technologies, or that this invention is a brand-new field. 3. Invention is practical, which means that invention can be used for manufacturing and can produce positive effects.
Legal basis: Paragraph 1 of Article 22 of the Patent Law of People's Republic of China (PRC) stipulates that inventions and utility models granted patent rights shall be novel, creative and practical.