Marie Mathews

Marie Mathews

Roseland, NJ recognized lawyers icon Recognized in Best Lawyers since 2023
Chiesa Shahinian & Giantomasi PC

52 Best Lawyers awards

Chiesa Shahinian & Giantomasi PC logo

Awarded Practice Areas

Commercial Litigation

Biography

Marie Mathews serves as the Managing Member of CSG Law, where she provides strategic direction to the Firm, managing the firm’s resources to ensure effective and exceptional counsel to clients. Previously, Marie served in a variety of management roles at the firm, including as Practice Group Leader of the Litigation Group and Deputy General Counsel to the firm, where she supported firm operations and client service initiatives, as well as created programs to educate and mentor team members.

Her legal practice focuses on complex commercial matters in New York and New Jersey federal and state courts, as well as forums for alternative dispute resolution. She has represented pharmaceutical, healthcare, technology, construction, real estate, finance companies, and law firms, among others, in a wide array of matters including shareholder disputes involving closely-held businesses, real estate and property management disputes, and professional malpractice cases.

Marie also has extensive experience in navigating complex e-discovery issues, including managing collections and productions in a cost-effective manner. In addition, Marie’s experience includes corporate internal investigations involving kick-back schemes, commercial bribery, and potential antitrust violations.

Using her experience gained as the former Deputy General Counsel of CSG and a member of the firm’s Ethics & Conflicts Committee, she offers lawyers and law firms insight into their ethical obligations and represents them in legal malpractice cases.

Marie received her J.D. from the University of Pennsylvania Carey Law School and her B.A., magna cum laude, from George Washington University.

Chiesa Shahinian & Giantomasi PC

52 Best Lawyers awards

Chiesa Shahinian & Giantomasi PC logo

Overview

  • University of Pennsylvania, J.D., graduated 2003
  • University of Pennsylvania, J.D., graduated 2003

Client Testimonials

Awards & Focus

Recognized in The Best Lawyers in America® 2026 for work in:
  • Commercial Litigation
Additional Areas of Practice:
  • Ethics and Professional Responsibility Law
  • Professional Malpractice Law - Defendants
Awards:
    • Selected to the New Jersey Super Lawyers list, Business Litigation (2024)
    • Included in ROI-NJ, Influencers: Women in Business (2021-2022)
    • Included in NJBIZ, Leaders in Law (2022)
    • Included in Benchmark Litigation, Future Star (2009)

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