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Juanjun Hao

Attorney At Law | Patent Attorney

Phone: +86 10 88369999

Technical Fields

  • Mechanics Engineering
  • Automatic control

Practice Areas

  • Patent drafting
  • Prosecution
  • Invalidation
  • litigation
  • Counseling

Professional Experience

  • Patent Attorney/ Attorney at Law, Chang Tsi & Partners, 2016.07-now
  • Patent Attorney/ Attorney at Law Liu&Shen Association 2011.07 -2016.06
  • Patent examiner, Patent Examination Cooperation Center, SIPO, 2005.04-2011.06


  • Master of Management Science and Engineering (majored in Management Information System), Beijing University of Aeronautics and Astronautics 2002-2005
  • Bachelor of Mechanical Engineering, Beijing University of Chemical Technology, 1997 - 2001

Bar Admission

  • Chinese Patent Attorney (2012)
  • Chinese Attorney at Law (2014)

Team Overview

Chang Tsi & Partners is proud of our excellent team of attorneys. Our attorneys are international, professional, well-educated and experienced in handling all types of commercial matters. Our partners include a few of the earliest legal practitioners in in China. Before they went into private practice, most of our partners served at government organs, judicial institutions, and/or big corporations and are thus very familiar with the internal mechanisms of these organizations. They also have established extensive, close contacts within these organizations. So our partners have the ability to integrate their social resources and create synergy to maximize the benefits for our clients.

Chang Tsi & Partners currently employs a total of 350 staffs, including 220 attorneys, agents and foreign consultants and others. The majority of our lawyers hold master's degrees and above, from prestigious law schools both domestic and international. Some of our lawyers have studied and/or worked abroad and have qualified as lawyers and patent agents in America and Canada.

At Chang Tsi, we highly value teamwork and cooperation. We also stress sharing of resources and experience in order to provide our clients with the best services. Their years of practice and extensive experience working with foreign firms, make our attorneys well-qualified to handle the most complicated and challenging legal matters for clients all over the world.