The agent applying for cancellation of patent pledge registration is

It can be the patent applicant or his entrusted agent. According to Article 44 of the Patent Law, an application system is adopted for the registration of patent pledge, and the patentee or his agent may apply to the Patent Office for the registration of patent pledge, so the agent applying for cancellation of the registration of patent pledge may also be the patentee or his entrusted agent. Patent pledge means that the debtor or the third party pledges the property right in the patent right in order to guarantee the realization of the creditor's rights. When the debtor fails to perform the debt, the creditor has the right to receive the property right in the pledged patent right in priority according to law.