• Nagoya Institute of Technology, B.S. Fine Measurements (1979)
  • Rensselaer Polytechnic Institute, M.B.A. Finance (1992)
  • Loyola University of Chicago Law School, J.D. (1998)


  • Illinois
  • U.S. Patent and Trademark Office (USPTO)
  • U.S. District Court, Northern District of Illinois
  • U.S. Court of Appeals, Federal Circuit
  • Japanese Patent Attorney (Benrishi)


  • Japanese (Fluent)

Tadashi Horie


Tadashi Horie brings more than 25 years of experience to a practice focused on patent prosecution, opinion, licensing issues, and litigation. With a deep background in electrical and computer-related technologies, he has particular experience in matters involving video and audio coding, computer-controlled medical diagnostic analyzers, signal processing, semiconductors, software, and fuel cell systems. He also regularly prosecutes design patents.

His opinion work encompasses both non-infringement and invalidity analyses. For multiple years running, he has been named an Illinois Super Lawyer. He is a member of the Japan Patent Attorneys Association and speaks fluent Japanese.

Prior to joining Crowell & Moring, he was a shareholder at Brinks Gilson & Lione.

Representative Experience


  • Chicago's Notable Minority Lawyer, Crain's Custom Media, 2018
  • Leading Intellectual Property Lawyer, Leading Lawyers Network, Law Bulletin Publishing Company, 2010, 2014
  • Illinois Super Lawyers, Intellectual Property Law, 2012–2017; Rising Stars, 2008


  • Japan Patent Attorneys Association
  • Illinois Bar Association
  • Chicago Bar Association
  • Intellectual Property Owners Association


Admitted to practice: Illinois, U.S. Patent and Trademark Office (USPTO), U.S. District Court for the Northern District of Illinois, U.S. Court of Appeals for the Federal Circuit, Japanese Patent Attorney (Benrishi)

Representative Matters

  • Advised wireless telephone company on the creation of a patent portfolio in the MPEG technology area; similarly, advised an electrical utility company on building a patent portfolio in the fuel cell technology area.
  • Successfully defended medical equipment company against claims of patent infringement brought in both Florida federal court and the International Trade Commission.
  • Successfully defended manufacturer of electrical connectors in patent infringement litigation brought in California federal court.
  • Advised medical diagnostic service company entering a new line of business in gene therapy on a variety of licensing matters, including negotiating for and obtaining patent licenses.

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