What are the procedures for the cancellation registration of patent pledge?

(1) The parties shall submit the registration notice of the patent pledge contract, the contract completion certificate, the written agreement and other supporting materials to the Patent Office.

(2) After examination and approval by the Patent Office, a Notice of Cancellation of Registration of Patent Pledge Contract shall be issued to the parties concerned.

(3) After the expiration of the pledge period 15 days, if the parties fail to take the initiative to cancel the registration, the contract registration will be automatically cancelled. The date of cancellation of registration shall be subject to the validity period. The patent pledge contract shall be invalid from the date of registration and cancellation.

(4) After the debt is fulfilled, the pledgee shall return the patent certificate and other documents delivered by the pledger. If the debt has not been fulfilled, the pledge agreement can be discounted, or the pledge can be auctioned or sold according to law.