Kristen F. Mazzeo

Senior Counsel

  • Office Contact Info
  • Biography
    Kristen Mazzeo is Senior Counsel in the Philadelphia office of GRSM. She focuses her practice on insurance, product & general liability, and environmental/toxic tort litigation. Kristen has successfully defended corporations and insurance companies in a wide variety of complex litigation matters involving product defects, transportation, premises liability, and insurance coverage. She has experience handling all aspects of litigation from pre-suit investigation through trial, including taking and defending depositions, preparing pleadings and discovery, arguing motions, and attending case management conferences, settlement conferences, arbitrations, and trials. Kristen has hands-on experience consulting with clients and managing legal issues and cases of all sizes from small claims to complex litigation matters involving catastrophic losses, mass torts, and multi-district litigation.
    Prior to joining GRSM, she was an associate at a mid-sized defense firm in Philadelphia where she gained experience in complex product defect and toxic tort litigation, defending automotive and consumer manufacturers


    • Pennsylvania
    • New Jersey
    • U.S. District Court, District of New Jersey
    • U.S. District Court, Eastern District of Pennsylvania


    • Defense Research Institute
      • Products Liability Steering Committee, Member
      • Vice Chair of Consumer Goods and Office Equipment
    • Philadelphia Bar Association
    • Pennsylvania Bar Association
    • Philadelphia Association of Defense Counsel

    Community Involvement

    • Senior LAW Center
    • Philadelphia LawWorks
  • Practice Areas
  • Publications & Presentations


    • Telecommuting Traps: Hidden Risks and How to Handle Them, GRSM National Employment Webinar Series, November 2018
  • Education


    J.D., cum laude, Temple University Beasley School of Law, 2015

    • Temple International & Comparative Law Journal
    • Rubin Public Interest Honor Society
    • Trial Advocacy Program
    • City Solicitor Clinic, Philadelphia Law Department
    • Municipal Court of Philadelphia, Mediator for Small Claims Matters
    • Philadelphia Housing Court, Mediator for Landlord/Tenant Claims

    B.A., cum laude, Political Science and Business, Houghton College, 2007


    Best Lawyers in America® Ones to Watch distinction in Product Liability Litigation - Defendants (2021-2024), Insurance Law (2023-2024), Personal Injury Litigation - Defendants (2024)*

    Super Lawyers® Rising Stars distinction in Personal Injury - Products, General Litigation, Environmental Litigation, and Insurance Coverage (2021 - 2023)*


    *No aspect of this advertisement has been approved by the Supreme Court of New Jersey.
    A description of the Best Lawyers selection methodologies can be found at:
    The Super Lawyers® Rising Star list is issued by Thomson Reuters. A description of the selection methodologies can be found at: