Legal analysis: 1. Filing is an act of publicity, which can effectively protect the interests of the licensee.
2. In the event of a patent infringement dispute, the registered patent licensing contract can be used as an important basis for the licensee to stop the patent infringement before litigation.
legal basis: article 35 of the patent law of the people's Republic of China. within three years from the date of filing, the patent administration department of the State Council may, upon the request of the applicant at any time, conduct substantive examination of the application; If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn. The administrative department for patent in the State Council may, when it deems it necessary, examine the application for a patent for invention on its own.