Leif R. Sigmond Jr.

Partner

Chicago
T +1.312.416.6275
F +1.312.416.6201

Overview

Leif Sigmond helps clients with intellectual property litigation and counseling. He has served as first chair in litigation, leading teams of up to 10 plus attorneys in matters involving the electrical, mechanical and software fields in district court, Federal Circuit appeals and appearances before the Patent Trial and Appeal Board. Believing in the importance of being fully prepared to go to trial if necessary, Leif is driven to achieve the best possible results for his clients and prides himself in looking for business solutions to resolve disputes.

Select Experience

  • As first chair, obtained a jury verdict for more than $15 million in favor of a software company suing a competitor for patent infringement. The case was affirmed on appeal.

  • Represented a software company in multiple Covered Business Method proceedings before the Patent Trial and Appeal Board.

  • Enforced a patent against multiple infringers of a client’s internet video software application, obtaining settlements from many infringers.

  • Secured a default judgment and sanctions of $1 million against a patent infringer on behalf of an electronic trading software company.

More »

Experience

  • As first chair, obtained a jury verdict for more than $15 million in favor of a software company suing a competitor for patent infringement. The case was affirmed on appeal.

  • Represented a software company in multiple Covered Business Method proceedings before the Patent Trial and Appeal Board.

  • Enforced a patent against multiple infringers of a client’s internet video software application, obtaining settlements from many infringers.

  • Secured a default judgment and sanctions of $1 million against a patent infringer on behalf of an electronic trading software company.

  • Obtained a multimillion-dollar jury verdict, which was affirmed on appeal, for a Chicago-based software company.

  • Obtained summary judgments for a maker of cable television set-top boxes that was sued for alleged patent infringement in two separate cases.

  • Represented a law firm accused of copyright infringement and obtained a dismissal with prejudice.

  • Represented a network and telecommunications equipment company in multiple patent infringement litigations.

  • Represented a maker of fiber-optic cable troughs in design and utility patent litigation.

  • Represented a medical device company in patent litigation. Focused on the damages portion of the case.

Recognitions and Memberships

Recognitions

  • IAM Patent 1000 – The World's Leading Patent Practitioners
    • Illinois: Recommended for litigation (2012 to 2017)
    • IAM Patent Litigation 250 (2011)
  • Leading Lawyers Network
  • Best Lawyers in America© (2013 to 2017)
    • Chicago: Litigation – Intellectual Property
    • Chicago: Litigation – Patent
  • Illinois "Super Lawyer" (2005 to 2017)

Memberships

  • American Bar Association
  • AIPLA
  • PTAB Bar Association
  • Licensing Executives Society
  • Institute of Electrical and Electronics Engineers

Community

  • Chicago Yacht Club: Commodore

Industries

Prior Positions

  • McDonnell Boehnen Hulbert & Berghoff LLP
    • Managing Partner (2002 to 2004, 2011)
    • Co-Chair: Litigation & Appeals Practice Group (2017)

Admissions

  • U.S. District Court, Northern District of Illinois, Trial Bar
  • U.S. District Court, Western District of Michigan
  • U.S. District Court, District of Colorado
  • U.S. District Court, District of New Jersey
  • U.S. District Court, Southern District of New York
  • U.S. District Court, Eastern District of Wisconsin
  • U.S. District Court, Western District of Texas
  • U.S. Patent and Trademark Office, Registration No. 35,680
  • Illinois
  • New Jersey
  • New York

Education

  • J.D., Delaware Law School - Widener University, magna cum laude; Delaware Journal of Corporate Law, Administrative Board, Business Manager
  • B.S., Electrical Engineering, Lafayette College