Partner | Patent Attorney | Attorney at Law


Mechanical Engineering , Vehicle Engineering , Precision Instruments

TEL: 86-10-6268 1616

FAX: 86-10-6268 1818



Mr. Sean CHEN joined our firm in 2007, mainly engaged in patent related IP fields, comprising patent application and prosecution, patent invalidation and disputes.


Mr. Sean CHEN is qualified as a patent attorney in 2008 and an attorney at law in 2009. Besides patent filing and prosecution, he has addressed many patent invalidations / infringement litigations for a number of international well-known enterprises.


Mr. CHEN received his bachelor’s degree in mechanical engineering and automation from Tsinghua University in 2002, and his Doctor's degree in material science and engineering from Tsinghua University in 2007. Mr. CHEN also obtained a L.L.M. degree in IP law from John Marshall Law School of United States in 2017.


Representative cases of Mr. Sean CHEN led and participated comprise:



-     Dyson vs. Zhejiang Aike, representing Dyson, a design patent infringement case, a pretrial evidence preservation granted, win;

-     Tsann Kuen vs. UCC, representing UCC, a utility model infringement case, fully invalidated the utility model of Tsann Kuen, win;

-     Siempelkamp(an international known press enterprise) vs. a national press enterprise Y, representing the enterprise Y, two patent infringement cases, fully invalidated two patents of the plaintiff, win

-     Hanyu vs. Leili, a patent infringement case, representing Leili, win



-     Representing Dyson in dozens of invalidation cases and obtaining good results;

-     Representing a well-known international mobile company S to invalidate a design patent of a domestic company, win

-     Representing Leili (a well-known domestic motor company) in near 20 invalidation cases, win most cases



-     IP due diligence before acquisition, as requested by a well-known international medical device enterprise M;

-     IP due diligence before investing medical device companies, as requested by venture capitals L and C;

-     Freedom To Operate analysis before launch of a medical device, as requested by a well-known international medical device company L, the work is divided into 10 sub-FTO cases, and a team with 12 members involved;

-     IP due diligence before merger and acquisition, as requested by an international known optic enterprise Z;


Academic activities

-     “Four cases and their lessons for utility models”, Managing Intellectual Property, China IP Focus 2013;

-     involved in the research project “Study of Several Issues regarding Patent Reexamination and Invalidation Procedure” in 2011 and involved in the research project “Study of Service Standard for Intellectual Property Analysis” in 2012, with both of the projects led by the State intellectual Property Office of the P.R.C.




All-China Lawyers Association (ACLA)

All-China Patent Agents Association (ACPAA)