Stephen Yang

Patent Attorney

Corporate Title

Managing Partner/Patent Attorney

  • Phone : +86-10-62139699
  • Fax : +86-10-62131630; +86-10-62131230
  • Email : Patent

Stephen YANG


Patent Attorney/Managing Partner

Working Experience

1997-2000     Patent Attorney, China Patent Agent (HK) Ltd.

2000-2005      In-house Patent Specialist, Hydrogenics Corporation, Toronto, Canada

2005-2016     Patent Attorney, Partner, Peksung Intellectual Property Ltd.

2016-present   Patent Attorney, Managing Partner, Chofn Intellectual Property


1999             Registered to practice before the Chinese Patent Office

Education and Training

1997             Double Bachelor's degrees in Mechanical Engineering and Industrial Engineering, Tsinghua University, Beijing, China

2004             Master's degree in Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada

2005             Studied US patent law in the USA

Practice Area

Patent search, drafting, prosecution, reexamination, invalidation and litigation in a wide variety of technical fields, particularly general machines, energy, electronics and high tech areas.

Extensive experience in design patent practice

Consulting on corporate IP strategy and portfolio management


Chinese (native), English, Japanese



•      “Design Patent for GUI: Challenges and Hope”, The Asian Lawyer, July 2015

•      Lead author, “Patents”, Chapter 1 in IP Protection in China, Donna P. Suchy, ed., 1st ed., ABA Publishing, 2015

•      “New Draft Fourth Amendment to the Chinese Patent Law”, Asia IP, April 2015

•      Co-author, “Protecting the Border”, World Intellectual Property Review Annual, 2015

•      “Patenting Software in China: the Challenges of Drafting”, IPPRO TheInternet, Issue 47, September 2014

•      “Patent Law and Regulations Continue to Change”, World Intellectual Property Review e-Digest, 2013

•      “Impact of New Provisions”, China IP Focus, 2012

•      “Utility Model Practice in China”, The Asian Lawyer, January 2012

•      Co-author, “Patent Protection in China”, Intellectual Property Magazine, September 2011

•      “Recent Trends at the State Intellectual Property Office”, World Intellectual Property Review – BRIC Report, 2011

•      “Becoming a True IP Giant”, World Intellectual Property Review Digest, 2010

•      “Examination Guidelines Overhauled”, China IP Focus, 2010

•      “Slow Progress in China”, World Intellectual Property Review Digest, 2009

•      “Overlooked but Powerful Tool”, China IP Focus, 2009

•      “Milestone Year in China’s IP History”, World Intellectual Property Review Digest, 2008

•      Frequent contributor of “Jurisdiction Report - China” in World Intellectual Property Review since September 2008




Member of All-China Patent Agents Association (ACPAA)

Member of AIPPI China

Member of LES China

Member of Association of Intellectual Property Firms (AIPF)