Atty. Katherine V. Mackey
Katherine V. Mackey focuses her practice on complex litigation matters, including commercial litigation, internal investigations, and appeals.
Profile Summary
About Katherine V. Mackey at a glance
Katherine V. Mackey is a criminal defense, business, white collar, litigation, and appellate attorney based in Boston, Massachusetts, practicing at Wilmer Cutler Pickering Hale and Dorr LLP. Admitted to practice in Massachusetts, Massachusetts Bar Association and New York, New York State Bar Association. Educated at Columbia University (J.D., 2014) and Harvard University (BA, 2007). Recognitions include Best Lawyers in America — Appellate Practice (2026), Best Lawyers in America — Commercial Litigation (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
- Katherine V. Mackey focuses her practice on complex litigation matters, including commercial litigation, internal investigations, and appeals
- She has represented a variety of companies, including a major automotive manufacturer, a financial services company, and an electronics company
Practice Areas Explained
Katherine V. Mackey's Areas of Practice
Each practice area below reflects the types of cases Katherine V. Mackey handles, with a brief overview of what that area of law covers.
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
Katherine V. Mackey is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Massachusetts →
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Katherine V. Mackey is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →
Katherine V. Mackey is one of 20,025 white collar attorneys indexed nationally. Browse white collar attorneys in Massachusetts →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Katherine V. Mackey is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Massachusetts →
Appellate attorneys for civil and criminal appeals at state and federal court.
Katherine V. Mackey is one of 86,319 appellate attorneys indexed nationally. Browse appellate 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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