According to the inquiry of China Travel Service. Com, the application process of invention patent includes five stages: acceptance, preliminary examination, publication, actual examination and authorization. According to the provisions of the Patent Law, if China National Intellectual Property Administration receives an application for a patent for invention and meets the requirements after preliminary examination, it shall be published 18 months after the date of application. The publication of the invention means that the content of the invention patent will be made public so that others can know the technical content of the invention. This is also to protect the rights and interests of applicants and ensure the transparency and fairness of patent applications. The advantages of the invention announcement are: 1. After publication, others can know the technical content of the invention and avoid repeated inventions.
2. After publication, others can evaluate and study the invention to promote technological progress and innovation. Therefore, invention patents include invention announcements.