Haiyan MAO has over ten years of experience in intellectual property law, focusing on IP protection, legal non-litigation, and litigation cases. They provide professional services to domestic and international clients, including patent and trademark applications, transfers, renewals, reviews, search analysis, reexamination, invalidation, administrative litigation, infringement litigation, licensing, and compliance. She has consistently offered intellectual property legal advisory services to both Chinese and foreign enterprises, helping them establish IP protection systems, refine their strategies, and provide expert management advice and strategic planning. Their clientele includes multinational companies, foreign enterprises, and private firms across various industry sectors.

Haiyan MAO have 16 years of experience as a registered Chinese lawyer and 5 years as a registered Chinese patent agent. For the past 6 years, Haiyan Mao have been working at Shanghai Dehehantong Law Offices in these roles.

Bachelor of Laws, Economic law, Tong Ji University

BEng in Electrical Engineering and Automation, Beihang University (BUAA)

Member of the All China Lawyers Association (2008-present)

Member of the China Patent Agent Association(2018-present)

Member, Intellectual Property Business Committee, Shanghai Lawyers Association (2020-present) 

Passed the Shanghai Lawyers Association's Professional Level Assessment in two practice areas of Foreign-related and Intellectual Property Law in year 2020