What is the process of applying for a patent?

Countries have different requirements for the examination of patent applications, and basically implement two different systems. Some countries implement the formal examination system, that is, only examine whether the form of patent application meets the legal requirements, but not whether the invention meets the substantive conditions such as novelty. Some countries implement substantive examination system, that is, not only the form of application is examined, but also whether the invention has the conditions of novelty, advancement and practicality. Only inventions with the above patent conditions can be granted a patent right. China and most countries in the world adopt the substantive examination system. The examination and approval process of an application for a patent for invention Patent application-acceptance-preliminary examination-publication-substantive examination request-substantive examination-document request for authorization to apply for an invention patent: including the name of the invention patent, the name of the inventor or designer, the name and address of the applicant, etc. Description: including the name, technical field, background technology, invention content, attached drawings and specific implementation methods of the invention patent. Claim: Explain the technical features of the invention, and clearly and concisely state the content to be protected.