Dienwiebel, Thomas

Thomas S.

German Attorney, U.S. Patent Agent

Thomas Dienwiebel focuses his practice on patent prosecution. He is a member of our European practice team.

Thomas has significant experience in prosecuting patents before the United States Patent and Trademark Office, as well as the European Patent Office, which allows him to provide his clients with detailed guidance for transatlantic patent portfolios. He is one of a few “dual qualified” practitioners, admitted to practice in patent matters before both the USPTO and the EPO.

Thomas’ technical background is in the field of electrical engineering with a focus on electronics, telecommunications, software, optics, and medical devices. His experience also comprises European trademark, licensing, and domain arbitration matters, as well as border control procedures in Europe.

In addition to patent prosecution, Thomas also represents clients in opposition and invalidity procedures before the European Patent Office, the German Federal Patent Court, and the German Supreme Court. He frequently argues cases at the EPO. Thomas also has significant experience in patent litigation in Germany, in particular before the District Court of Düsseldorf, Germany.

Industry Experience

Thomas graduated in Electrical Engineering at the University of Dortmund in 2002 after having worked as a photonics engineer at Tsunami Optics, Inc., Mountain View, California. He started his training in the field of intellectual property law at a patent law firm in Witten, Germany in 2003. After having finished his training, Thomas became admitted as a patent attorney in Germany in 2007. Later, he worked as a partner in a patent law firm in Dortmund, Germany.


  • FICPI (Fédération Internationale des Conseils en Propriété Industrielle)
  • epi (Institute of Representatives before the EPO)
  • Patentanwaltskammer (German Patent Attorneys Bar)
  • NAPP (National Association of Patent Practitioners)
  • AIPLA (American Intellectual Property Law Association)

Selected Presentations

  • Protection of Intellectual Property in Europe; Santa Clara University (SIPLA High Tech Tuesday) (April 22, 2014)
  • International Protection of Intellectual Property; Palo Alto, CA (April 7, 2015)


  • Law Degree for Patent Attorneys, FernUniversitaet Hagen, Germany
  • Dipl.-lng., Electrical Engineering (comparable to U.S. Master's Degree), Technical University of Dortmund, Germany


  • German Patent & Trademark Office (DPMA)
  • German Federal Patent Court (BPatG)
  • German Supreme Court (BGH; for patent invalidity appeal procedures)
  • European Patent Office (EPO)
  • European Union Intellectual Property Office (EUIPO, formerly OHIM)
  • United States Patent & Trademark Office (USPTO)


  • European Patent Office Practice
  • German Federal Patent Court Practice
  • German Patent & Trademark Office Practice
  • German Supreme Court Practice
  • United States Patent & Trademark Office Practice

Technologies & Industries

  • Electronics
  • Medical Devices
  • Optics
  • Semiconductor and Integrated Circuits
  • Software
  • Telecommunications