Atty. Mark A. Berthiaume
Mark A. Berthiaume is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation.
Profile Summary
About Mark A. Berthiaume at a glance
Mark A. Berthiaume is a business and litigation attorney based in Boston, Massachusetts, practicing at Greenberg Traurig. Educated at The George Washington University (J.D., 1981). Recognitions include Best Lawyers in America — Commercial Litigation (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Criminal Defense: White-Collar (2026). Serands clients in Boston, MA and the surrounding metropolitan area.
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About
- Mark A. Berthiaume is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation
- Mark A., who practices law in Boston, Massachusetts, has been recognized since 2020
- This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark A. is held by other top lawyers in the same geographic and legal practice area
Practice Areas Explained
Mark A. Berthiaume's Areas of Practice
Each practice area below reflects the types of cases Mark A. Berthiaume 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.
Mark A. Berthiaume is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Mark A. Berthiaume is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Massachusetts →
Jurisdictional Context
Why local counsel matters in Massachusetts
Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Boston are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts 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 Massachusetts courts without local counsel or pro hac vice admission.
Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.
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