Atty. Denis J. Sullivan

Atty. Denis J. Sullivan

Denis J. Sullivan is a lawyer practicing real estate, civil litigation, domestic relations and 3 other areas of law.

Stoneham Stoneham 47 yrs experience 47 year
Call (857) 365-7175 Book Appointment

Profile Summary

About Denis J. Sullivan at a glance

Denis J. Sullivan is a patent, trademark, family law, real estate, and ip attorney based in Stoneham, Massachusetts. They have 47+ years of legal experience, licensed to practice since 1979. Admitted to practice in Massachusetts (1979). Educated at Boston College J.D. (—) and University of Notre Dame B.A. (—). Serands clients in Stoneham, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Denis J. Sullivan is a lawyer practicing real estate, civil litigation, domestic relations and 3 other areas of law
  • Denis received a B.A. degree from University of Notre Dame, and has been licensed for 47 years
  • Denis practices in Stoneham, MA

Practice Areas Explained

Denis J. Sullivan's Areas of Practice

Each practice area below reflects the types of cases Denis J. Sullivan handles, with a brief overview of what that area of law covers.

Patent Law

Denis J. Sullivan is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Massachusetts →

Trademark Law

Denis J. Sullivan is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Massachusetts →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Denis J. Sullivan is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Massachusetts →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Denis J. Sullivan is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Massachusetts →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Denis J. Sullivan is one of 106,079 ip attorneys indexed nationally. Browse ip 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 Stoneham 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 Stoneham or all attorneys in Massachusetts.

Frequently Asked

Common questions about Denis J. Sullivan

Where is Denis J. Sullivan's law office located?
Denis J. Sullivan's law practice is located in Stoneham, Massachusetts. You can contact the office directly through this profile page.
What practice areas does Denis J. Sullivan handle?
Denis J. Sullivan focuses on patent, trademark, family law, real estate, ip. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Denis J. Sullivan practiced law?
Denis J. Sullivan has 47+ years of legal experience and has been licensed since 1979.
Where did Denis J. Sullivan go to law school?
Denis J. Sullivan earned their education at (—); (—).
How can I contact Denis J. Sullivan for a consultation?
You can contact Denis J. Sullivan 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

Boston College J.D.
- In Progress
University of Notre Dame B.A.
- In Progress

Bar Admissions

Massachusetts
Admitted: 1979

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