FacultyFaculty/Author Profile
Linda S. DeBruin

Linda S. DeBruin

Kirkland & Ellis LLP

Chicago, IL, USA

Professional Profile

Linda DeBruin (previously Linda Resh) is a partner in the intellectual property department of Kirkland's Chicago office. Linda serves as lead counsel in numerous intellectual property litigation matters in courts across the country in a variety of different technical fields. Linda focuses her practice on patent litigation with a special interest in computer and communication related matters.

Recent professional recognition includes:

  • Managing Intellectual Property IP Stars 2013
  • IAM Patent 1000: The World's Leading Patent Practitioners for 2013
  • The International Who's Who of Patent Lawyers 2013
  • Illinois Super Lawyer - 2012 and 2013
  • Leading Lawyers Network
  • AV Pre-Eminent rating by Martindale-Hubbell

Prior to joining Kirkland, Linda worked for eight years at AT&T - Bell Laboratories as a computer scientist and engineer, designing digital switching systems for international applications.

Representative Matters

  • Obtained judgment as a matter of law of noninfringement for BlackBerry. Prior to trial, obtained favorable claim construction, which resulted in Mformation dropping one of its patents from the litigation, and obtained summary judgment of invalidity of a majority of the claims in the remaining patent. Reported by the Daily Journal as one of the top defense verdicts for the year in California.
  • Represented BlackBerry in a high profile multipatent dispute with Visto Corporation. Case settled before trial.
  • Represented BlackBerry in an International Trade Commission Section 337 investigation brought by Prism. Case settled before hearing.
  • Won summary judgment of noninfringement for BlackBerry following construction of patent claims in BlackBerry's favor; argued and won appeal on behalf of BlackBerry before Federal Circuit when InPro sought to overturn claim construction.
  • Obtained preliminary injunction for client National Steel Car in patent infringement action.
  • Represented Pioneer in a hard fought battle with Gemstar in an International Trade Commission Section 337 investigation. Obtained a total victory for the client. The Administrative Law Judge rejected Gemstar's claims and found no violation had occurred. The Commission upheld the Administrative Law Judge's decision.
  • Won summary judgment of patent invalidity and no liability for McGraw-Hill on trade secret claims in a patent and trade secret action involving computer based blueprint system.
  • Obtained jury verdict for Motorola of no infringement and also invalidity of most claims. Upheld on appeal. Reported by The National Law Journal as one of the top defense verdicts for the year.
  • Represented GM in patent infringement bench trial regarding AM stereo radio technology. Obtained judgment of no infringement by GM, upheld on appeal; argued appeal before Federal Circuit for GM.

Memberships & Affiliations

  • American Bar Association, Intellectual Property Law Section — Member of Council (2003-2008); Member of Nominating Committee (2005); Committee Chair (2000-2002)
  • Previous member of AIPPI-US — Treasurer (2006 - 2008); Vice President (2008 - 2010).

Prior Experience

Summary of Technical Experience

AT&T Bell Laboratories, Naperville, Illinois (1981-89):
  • Legal Staff (1987-89): Drafted patent applications and office actions while attending law school.
  • Supervisor (1986-87): Managed portion of software development project to provide operator services on the 5ESS® Switching System.
  • Member of Technical Staff (1981-86): Defined software architecture and developed software for international applications of the 5ESS® Switching System.


  • 1989, Illinois
  • Registered to practice before the United States Patent and Trademark Office


  • Loyola University Chicago School of Law, J.D. 1989 magna cum laude; Judge John C. Hayes Award; Chief Justice Edward D. White Award; Law Review.
  • University of Wisconsin at Milwaukee, M.S., Computer Science 1981 with honors.
  • University of Wisconsin at Milwaukee, B.S., Computer Science 1980 with honors; Tau Beta Pi - Engineering Honor Society.

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