Tadashi Horie

“I take pride in the fact that clients seek me out for legal advice on complex technologies that few other lawyers can understand.”

Tadashi Horie brings more than 20 years of experience to a practice focused on patent prosecution, opinion, and licensing issues. 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, and fuel cell systems. He also regularly prosecutes design patents.

For high-tech companies and other clients, Tadashi places a priority on understanding their business goals as thoroughly as their innovative intellectual property. His depth of knowledge on both fronts allows him to achieve the best results for his clients in prosecuting patents, as well as in negotiating terms and conditions of patent licenses. His opinion work encompasses both non-infringement and invalidity analyses.

Tadashi has practiced with Brinks Gilson & Lione since 1992; prior to that, he practiced at the Japanese firm of Yuasa & Hara.  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.

  • J.D.,
    Loyola University Chicago School of Law, 1998
  • B.S., Fine Measurements
    Nagoya Institute of Technology, 1979
  • M.B.A., Finance
    Rensselaer Polytechnic Institute, 1992
Bar Admissions
  • Illinois
  • Japanese Patent Attorney (Benrishi)
  • U.S. Court of Appeals, Fed. Cir.
  • U.S. Dist. Court, N.D. Illinois
  • U.S. Patent & Trademark Office
Technical Background
  • Analog Electronics
  • Business Methods
  • Digital Electronics
  • Semiconductors
  • Signal Processing
  • Software
  • Japanese
Experience | Overview
  • 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.  
Experience | Legal Experience

Brinks Gilson & Lione, Chicago, Illinois
Shareholder 2003-Present
Associate, 1992-2003

Yuasa and Hara, Tokyo, Japan
Associate (Benrishi)

Forward Thinking
  • "Patent Prosecution Outside the U.S.: A Panel Discussion Comparing and Contrasting Issues Relevant to Technology Managers in a Variety of Jurisdictions" 2006 AUTM Annual Meeting.
  • "Non-US Patent Prosecution from the Experts: A Panel Discussion Comparing and Contrasting Issues Relevant to Technology Managers in a Variety of Jurisdictions' 2004 AUTM Central Regional Meeting.
  • Treatises, Remedies for Patent Infringement in Japan Presented at 25th Biennial Conference of the IBA in 1993
Press Releases & Events
February 09, 2017

CHICAGO—Twenty attorneys at intellectual property law firm Brinks Gilson & Lione have been named to the 2017 ...

January 12, 2016

CHICAGO—Twenty-two attorneys at intellectual property law firm Brinks Gilson & Lione have been named to the 2016 ...

January 20, 2015
CHICAGO—Twenty-four attorneys at Brinks Gilson & Lione, one of the nation's largest intellectual property law firms, are named to the 2015 Illinois Super Lawyers list by Super Lawyers, a rating service that lists lawyers from more than ...
October 23, 2014
CHICAGO—Gary M. Ropski, a shareholder at intellectual property law firm Brinks Gilson & Lione and the firm's past president, has been named the #1 Leading Intellectual Property Lawyer in Illinois by Leading Lawyers, and fifty-nine ...
  • 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