Atty. David M. O'Connor

Atty. David M. O'Connor

Articles Editor, Boston College Environmental Affairs Law Review, 1983-1984. Massachusetts Super Lawyer, Boston Magazine.

Sudbury Sudbury 41 yrs experience 41 year
Call (978) 917-4135 Book Appointment

Profile Summary

About David M. O'Connor at a glance

David M. O'Connor is a Principal based in Sudbury, Massachusetts, practicing at O'Connor & Associates, LLC. They have 41+ years of legal experience, licensed to practice since 1985. Their practice focuses on litigation. Admitted to practice in Massachusetts (1985), U.S. District Court, District of Massachusetts (1985), U.S. District Court, District of Arizona, U.S. Court of Appeals, First and Ninth Circuits (1997), and U.S. District Court, District of Connecticut (1998). Educated at Boston College Law School (J.D., 1984) and Georgetown University (A.B., 1980). Recognitions include AV Preeminent. Active member of Boston (Member, Insurance Law Committee), Massachusetts (Member, Litigation Section) and American (Member, Tort and Insurance Section) Bar Associations Defense Research Institute. Serands clients in Sudbury, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Articles Editor, Boston College Environmental Affairs Law Review, 1983-1984
  • Massachusetts Super Lawyer, Boston Magazine

Practice Areas Explained

David M. O'Connor's Areas of Practice

Each practice area below reflects the types of cases David M. O'Connor handles, with a brief overview of what that area of law covers.

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

David M. O'Connor 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 Sudbury 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 Sudbury or all attorneys in Massachusetts.

Frequently Asked

Common questions about David M. O'Connor

Where is David M. O'Connor's law office located?
David M. O'Connor's law practice is located in Sudbury, Massachusetts. The firm is O'Connor & Associates, LLC. You can contact the office directly through this profile page.
What practice areas does David M. O'Connor handle?
David M. O'Connor focuses on litigation. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has David M. O'Connor practiced law?
David M. O'Connor has 41+ years of legal experience and has been licensed since 1985.
Where did David M. O'Connor go to law school?
David M. O'Connor earned their education at (J.D., 1984); (A.B., 1980).
How can I contact David M. O'Connor for a consultation?
You can contact David M. O'Connor directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David M. O'Connor received?
David M. O'Connor's notable recognition includes: AV Preeminent.

Practice Areas

Education

J.D.
Boston College Law School
- 1984
A.B.
Georgetown University
- 1980

Awards

AV Preeminent

Bar Admissions

Massachusetts
Admitted: 1985
U.S. District Court, District of Massachusetts
Admitted: 1985
U.S. District Court, District of Arizona, U.S. Court of Appeals, First and Ninth Circuits
Admitted: 1997
U.S. District Court, District of Connecticut
Admitted: 1998

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