Contact Us
Yan Yongliang
Tel: (86 10) 82202359
Fax: (852) 2827 1018

Working Team
Patent Team (Chemistry, Biotechnology & Pharmaceutics)

Education and Training
Mr. Yan received his Bachelor Degree in Chemical Engineering and Technology from Tianjin University in 2009 and his Master Degree in Chemical Engineering and Technology from Tsinghua University in 2012.

Work Experience
After graduation, he worked in the coal chemical industry and environmental protection fields as a process engineer. He joined Beijing DEQI Intellectual Property Ltd. in December 2018. He joined China Patent Agent (H.K.) Ltd. in September 2021.

Service Area
Patent Agency

Technical Background
Chemical Engineering, Inorganic materials and Polymer materials

Practice Area
Drafting Patent Application Documents, Preparing and Filing Patent Application (Including Domestic Patent Applications, PCT Applications and Foreign Patent Applications), Reporting and Responding to Office Action


Chinese, English

China Patent Agent (H.K.) Ltd.


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Tel: (852) 2828 4688
Fax: (852) 2827 1018

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