Knobbe/Martens: Intellectual Property Law
The best part of my job is counseling and working closely with intelligent, innovative & highly motivated clients.

Theodore G. Papagiannis


At a Glance

  • J.D. Loyola Law School
  • M.S. Environmental Engineering, University of Illinois at Urbana-Champaign
  • B.S. Civil Engineering, University of Southern California

  • State Bar of California
  • State Bar of Illinois
  • U.S. Patent and Trademark Office

Professional Profile 

Theodore advises companies on developing comprehensive intellectual property portfolios and strategies.  He has extensive experience in representing venture capital firms and other clients in IP due diligence matters.

Theodore is currently a member of the board of directors of Sustain OC, an organization that accelerates sustainability in the greater Orange County area through innovation, collaboration and education, and has been involved in leadership roles with the organization since its inception in 2010.  He has unique technical and IP experience in clean technologies, including water and wastewater treatment, recycling and waste management, lighting, clean energy and the like, and is Chair of the firm's Cleantech Practice Group.

In addition, Theodore has extensive experience in strategically growing IP portfolios in the medical device arena, including in the fields of spine and other orthopedics, injection systems, cardiac and cardiovascular technologies (e.g., for the treatment of atrial fibrillation and other arrhythmias, hypertension, etc.), denervation and neuromodulation, hypertension, tissue ablation, catheters, sheaths and other intravascular technologies and skin treatment.

Prior to joining the firm, Theodore worked as a civil and environmental engineer for nearly a decade.  He is a licensed Professional Engineer in the State of California.

Theodore joined the firm in 2005 and became a partner in 2011. 


  • Loyola Law School (J.D. 2005), Fritz B. Burns Scholar
  • University of Illinois at Urbana-Champaign (M.S. Environmental Engineering 1996), Amoco Fellow
  • University of Southern California (B.S. Civil Engineering 1994), summa cum laude, Tau Beta Pi, Chi Epsilon, Phi Kappa Phi Honor Societies
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