Katherine M. Lieb is Of Counsel to the Sills Cummis & Gross Litigation Department. Ms. Lieb has substantial experience handling a diverse range of litigation matters, including intellectual property and licensing litigation, class actions, real estate litigation and general business litigation. She has experience in both state and federal courts throughout the United States, and has contributed to several successful appeals.

Ms. Lieb returned to the Firm after serving as a Law Clerk to the Honorable Joseph E. Irenas, United States District Judge for the District of New Jersey.


  • Litigation
  • Intellectual Property
  • Intellectual Property Litigation

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Court Admissions

  • U.S. District Court, Southern District of New York
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, District of New Jersey


Rankings and Recognition

  • Selected for inclusion in:
  • New York Metro Super Lawyers®* "Rising Stars" 2014-2015, Business Litigation, IP Litigation

* See Award Methodology. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.


  • Member, American Bar Association

  • Member, The Association of the Federal Bar of New Jersey

  • Member, The Copyright Society


  • J.D., Washington University School of Law

    Dean’s List
    Scholars in Law Recipient
    Managing Editor, Washington University Journal of Law and Policy

  • B.A., The College of William and Mary, cum laude

Bar Admissions

  • New York
  • New Jersey