When applying for change, the following materials shall be submitted: 1, application form for change of registered items of patent agency in duplicate; 2. Original partnership agreement of patent agency 1 copy, or original investment transfer agreement/share withdrawal agreement 1 copy; 3, the new partner's patent agent registration form; 4. Copy of the patent agent qualification certificate and ID card of the new partner 1 copy; 5. A copy of the personnel file keeping certificate or retirement certificate of the patent agent who newly joined the partner; If you have practiced in a patent agency, you should also submit the original dismissal certificate issued by the original patent agency; 6, a copy of the patent agency registration certificate.