Atty. Marie Mathews
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.
Profile Summary
About Marie Mathews at a glance
Marie Mathews is a business and litigation attorney based in Roseland, New Jersey, practicing at Chiesa Shahinian & Giantomasi PC. Educated at University of Pennsylvania (J.D., 2003). Recognitions include Best Lawyers in America — Commercial Litigation (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Ethics and Professional Responsibility Law (2026). Serands clients in Roseland, NJ and the surrounding metropolitan area.
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About
- 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
Practice Areas Explained
Marie Mathews's Areas of Practice
Each practice area below reflects the types of cases Marie Mathews handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Marie Mathews is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New Jersey →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Marie Mathews is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New Jersey →
Jurisdictional Context
Why local counsel matters in New Jersey
Practicing law in New Jersey. Legal matters in New Jersey are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Roseland are typically filed in the local municipal court or the appropriate New Jersey state district court, depending on subject matter and amount in controversy. An attorney licensed in New Jersey brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New Jersey courts without local counsel or pro hac vice admission.
Looking for additional New Jersey attorneys? Browse all attorneys in Roseland or all attorneys in New Jersey.
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