David XU


President/Managing Partner, Patent Attorney
E-mail:davidxu@ruibangip.com
Tel:87190097

Practice Area


Mr. Xu's main areas of practice cover medical device, mechanics, electronics, communication and semiconductor, etc. Mr. Xu has extensive experience in dealing with multinational and domestic complicated patent issues, including patent application drafting,patent prosecution, patent re-examination and invalidation, analysis on patent validation and infringement, patent administrative and civil litigation, etc. Mr. Xu has represented a large number of well-known companies worldwide.

Working Experience


Prior to founding Ruibang & Partners, Mr. Xu ever worked in China Patent Agent (H.K.) LTD. (CPA), Panawell & Partners, LLC and P.C. & Associates.   In 2007, Mr. Xu received his further training of European IP laws and patent practices at Albihns in Sweden. Mr. Xu is now a member of All China Patent Attorneys Association

Working Language


Chinese, English

Education


BS, Electrical Engineering, Tsinghua University
MS, Electrical Engineering, Tsinghua University

Lixin ZHANG


Vice President/Senior Consultant, Patent Attorney/Attorney at Law
E-mail:zhanglixin@ruibangip.com
Tel:87190097

Practice Area


Ms. Zhang's main areas of practice cover telecommunication, electronics & computer science, software engineering, Internet & E-commerce, electronics, mechanics, chemical engineering, etc. Ms. Zhang has extensive experience in patent drafting and prosecution, patent reexamination and invalidation, patent search and investigation, claim chart construction, patent mining and patent mapping, and client counseling. Ms. Zhang has handled patent prosecution before SIPO as representative of many famous global companies.

Working Experience


Prior to joining Ruibang & Partners, Ms. Zhang ever worked in Beijing East IP Intellectual Property Ltd, Liu, Shen & Associates and Cheng & Peng Intellectual Property Law Office. Ms. Zhang is now a member of All China Patent Attorneys Association.

Working Language


Chinese, English, Japanese

Education


BS, Mechanical Engineering, Tsinghua University
Ph.D, Computer Science and Technology, Tsinghua University

Isabella FU


Partner, Patent Attorney
E-mail:isabellafu@ruibangip.com
Tel:87190097

Practice Area


Ms. Fu's major areas of practice cover semiconductor, mechanics, medical device and material science, etc. Ms. Fu has more than five years experience in patent prosecution including invention, utility model and design, and she has the expertise in patent drafting, responding to office actions, patent re-examination and invalidation, etc.

Working Experience


Ms. Fu ever worked in Lecome Intellectual Property Agent Ltd and P.C. & Associates prior to cofounding Ruibang & Partners. Ms. Fu is now a member of All China Patent Attorneys Association.

Working Language


Chinese, English

Education


BS, Materials Science and Engineering, Dalian University of Technology
MS, Materials Science and Engineering, Dalian University of Technology

Frances GU


Partner, Trademark Attorney
E-mail: francesgu@ruibangip.com
Tel: 87190097

Practice Area


Ms. Gu has been assisting the multinational and domestic clients for more than a decade with global and local trademark and copyright prosecution and litigation, covering trademark registration availability searches, applications for trademark registration, trademark assignment, licensing, renewal, modification, customs recordation, oppositions, cancellation and invalidation actions, administrative and civil litigations, copyright recordation and the consultancy of all the aforesaid issues, etc.

Working Experience


Before joining Ruibang & Partners, Ms. Gu worked in China Trademark and Patent Law Office, Co., Ltd and Inkmo IP Law Services Co., Ltd.

Working Language


Chinese, English

Education


BA, China University of Political Science and Law

Vivian ZHANG


Partner, Patent Attorney
E-mail:vivianzhang@ruibangip.com
Tel: 87190097

Practice Area


Ms. Zhang's major areas of practice are electronics, computer science, communication, semiconductor and automation, etc. Ms. Zhang has nearly ten years experience in providing legal services for multinational and domestic clients, specializing in patent prosecution, patent re-examination and invalidation and infringement analysis, etc.

Working Experience


Ms. Zhang once worked in Panawell& Partners, LLC, King & Wood Mallesons and P.C. & Associates before co-founding Ruibang & Partners. Ms. Zhang is now a member of All China Patent Attorneys Association.

Working Language


Chinese, English

Education


BS, Electrical Engineering and Automation, Hebei University of Technology
MS, Electrical Engineering and Automation, Beihang University

Yuejun YU


Partner, Patent Attorney
E-mail:yuyuejun@ruibangip.com
Tel:87190097

Practice Area


Ms. Yu's main areas of practice cover pharmaceuticals, medical devices, chemical, material,polymer,Nano Tech,semiconductor,mechanics,electronic devices, etc. Ms. Yu has nearly ten years experience in dealing with foreign and domestic clients, including patent application drafting, patent prosecution, patent re-examination and invalidation, analysis on patent validation and infringement, patent administrative and civil litigation, etc. Ms. Yu has represented a large number of well-known companies worldwide.

Working Experience


Ms. Yu ever worked in Lungtin International IP Agent Ltd and P.C. & Associates prior to joining Ruibang & Partners. Ms. Yu is now a member of All China Patent Attorneys Association.

Working Language


Chinese, English, Japanese, German

Education


BS, Department of Material Chemistry,Peking University