Patent transfer process: 1. Sign a transfer contract. 2. Go to the Patent Office to complete the registration procedures, and the Patent Office will announce the contract. The contract will take effect from the date of registration. Necessary conditions: The parties must enter into a written contract, which will take effect after being registered and announced by the Patent Office. Written form, registration and announcement are legal conditions for a patent application right transfer contract to take effect. Patent right transfer contracts that are not signed in writing or registered and announced by the Patent Office are not protected by law.