Overview
Practice Areas
Industry Experience
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.
Honors
- Included in The Best Lawyers in America®, Commercial Litigation (2023-2026)
- Selected to the New Jersey Super Lawyers list, Business Litigation (2024-2026)
- Included in NJBIZ, Leading Women in Business (2025)
- Included in NJBIZ, Law Power (2025)
- Included in NJBIZ, Power 100 (2025-2026)
- Included in ROI-NJ, Influencers: Power List – Law (2025-2026)
- Included in ROI-NJ, Influencers: Women in Business (2021-2022; 2025)
- Included in CIANJ Enterprising Women in Commerce, Platinum (2025)
- Included in NJBIZ, Leaders in Law (2022)
- Included in Benchmark Litigation, Future Star (2009)
Award Methodology
*No aspect of this advertisement has been approved by the Supreme Court of New Jersey.
Involvement
- American Bar Association
- Association of the Federal Bar of New Jersey
- Essex County Bar Association
- Greater Newark Holiday Fund, Board of Trustees
- New Jersey Women Lawyers Association
- Women in eDiscovery
Education
- University of Pennsylvania Carey Law School (J.D., 2003)
- George Washington University (B.A., magna cum laude, 1999)
Admissions
- New Jersey
- New York
- U.S. Court of Appeals, Second Circuit
- U.S. District Court, District of New Jersey
- U.S. District Court, Eastern District of New York
- U.S. District Court, Southern District of New York
Overview
Among Marie’s experience are the following:
- Representing shareholder and related companies in a 47-day bench trial involving claims of financial mismanagement and diversion of corporate assets.
- Defending a multi-national law firm in connection with a legal malpractice action arising from estate planning and corporate transactional matters.
- Obtaining summary judgment in a dispute concerning the transfer of highly valuable shares in a cooperative apartment building in Manhattan.
- Managing e-discovery for the developer of the $1 billion American Dream project at the Meadowlands in a contractual dispute with the New York Giants and Jets.
- Representing foreign technology firm in contract and trade secret litigation brought by its minority owner.
- Compelling class action plaintiffs to arbitrate antitrust claims against health insurance company and related entities.
- Securing summary judgment for biotechnology firm in antitrust suit relating to invalidated patent.
*Results may vary depending on your particular facts and legal circumstances.