Atty. Ronan Peter O'Brien

Atty. Ronan Peter O'Brien

Ronan Peter O'Brien is a lawyer practicing securities & investment fraud, corporate & securities, mergers & acquisitions and 1 other area of law. Ronan received a B.A. degree from Boston University in 1996, and has been licensed for 30 years.

Watertown Watertown 30 yrs experience 30 year
Call (857) 788-0963 Book Appointment

Profile Summary

About Ronan Peter O'Brien at a glance

Ronan Peter O'Brien is a business, m&a, securities, and consumer attorney based in Watertown, Massachusetts. They have 30+ years of legal experience, licensed to practice since 1996. Admitted to practice in Massachusetts (1996). Educated at Boston University School of Law (J.D., 1996) and Boston University (B.A., 1996). Active member of Boston Bar Association American Bar Association. Serands clients in Watertown, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Ronan Peter O'Brien is a lawyer practicing securities & investment fraud, corporate & securities, mergers & acquisitions and 1 other area of law
  • Ronan received a B.A. degree from Boston University in 1996, and has been licensed for 30 years
  • Ronan practices in Watertown, MA

Practice Areas Explained

Ronan Peter O'Brien's Areas of Practice

Each practice area below reflects the types of cases Ronan Peter O'Brien handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Ronan Peter O'Brien is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →

Mergers & Acquisitions

Ronan Peter O'Brien is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Massachusetts →

Securities Law

Ronan Peter O'Brien is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Massachusetts →

Consumer Protection

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

Ronan Peter O'Brien is one of 50,607 consumer attorneys indexed nationally. Browse consumer 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 Watertown 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 Watertown or all attorneys in Massachusetts.

Frequently Asked

Common questions about Ronan Peter O'Brien

Where is Ronan Peter O'Brien's law office located?
Ronan Peter O'Brien's law practice is located in Watertown, Massachusetts. You can contact the office directly through this profile page.
What practice areas does Ronan Peter O'Brien handle?
Ronan Peter O'Brien focuses on business, m&a, securities, consumer. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Ronan Peter O'Brien practiced law?
Ronan Peter O'Brien has 30+ years of legal experience and has been licensed since 1996.
Where did Ronan Peter O'Brien go to law school?
Ronan Peter O'Brien earned their education at (J.D., 1996); (B.A., 1996).
How can I contact Ronan Peter O'Brien for a consultation?
You can contact Ronan Peter O'Brien 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.

Education

J.D.
Boston University School of Law
- 1996
B.A.
Boston University
- 1996

Bar Admissions

Massachusetts
Admitted: 1996

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