Zhang Yufeng, a graduate of Harbin Engineering University with a master's degree in Communication Engineering, is an expert in the intellectual property expert pool of the Ministry of Industry and Information Technology. With 18 years of experience, he is proficient in writing patent application documents, responding to examination opinions, and handling reexamination of rejections in the fields of communication, electronics, computer software, and electromechanical control. He is particularly skilled in the application layout of standard essential patents and patent invalidation requests, and also possesses rich practical experience in patent administrative litigation, SEP analysis and evaluation, patent acquisition, and licensing. His clients include Huawei, Datang Mobile, H3C Technologies, Siemens, Lenovo, Haier, and Weiqiao Guoke.