If you need to entrust an agency to make changes to patent bibliographic items, the agency can do it. Those who have not entrusted an agency can register an electronic application account and apply electronically, or submit paper documents. Materials required: declaration of change of bibliographic items, certificate of enterprise name change issued by the industrial and commercial administration, and a copy of the changed business license. The patentee must pay for name changes. The official fee is 200 yuan, which is payable after submitting the above materials.