Atty. Mark Damian Sullivan

Atty. Mark Damian Sullivan

Mark Damian Sullivan is a lawyer practicing commercial litigation, real estate litigation, oil and gas litigation. Mark received a B.A. degree from Furman University in 1983, and has been licensed for 35 years.

Denver Denver 35 yrs experience 35 year
Call (720) 362-2180 Book Appointment

Profile Summary

About Mark Damian Sullivan at a glance

Mark Damian Sullivan is a business, real estate, estate litigation, litigation, and energy attorney based in Denver, Colorado. They have 35+ years of legal experience, licensed to practice since 1991. Admitted to practice in Colorado (1991) and U.S. District Court, District of Colorado (1992). Educated at University of Maryland (J.D., 1991) and Furman University (B.A., 1983). Recognitions include AV Preeminent. Serands clients in Denver, CO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Damian Sullivan is a lawyer practicing commercial litigation, real estate litigation, oil and gas litigation
  • Mark received a B.A. degree from Furman University in 1983, and has been licensed for 35 years
  • Mark practices in Denver, CO

Practice Areas Explained

Mark Damian Sullivan's Areas of Practice

Each practice area below reflects the types of cases Mark Damian Sullivan 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.

Mark Damian Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Colorado →

Real Estate Law

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

Mark Damian Sullivan is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Colorado →

Estate & Trust Litigation

Mark Damian Sullivan is one of 20,023 estate litigation attorneys indexed nationally. Browse estate litigation attorneys in Colorado →

Civil Litigation

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

Mark Damian Sullivan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Colorado →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

Mark Damian Sullivan is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in Colorado →

Jurisdictional Context

Why local counsel matters in Colorado

Practicing law in Colorado. Legal matters in Colorado are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Denver are typically filed in the local municipal court or the appropriate Colorado state district court, depending on subject matter and amount in controversy. An attorney licensed in Colorado 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 Colorado courts without local counsel or pro hac vice admission.

Looking for additional Colorado attorneys? Browse all attorneys in Denver or all attorneys in Colorado.

Frequently Asked

Common questions about Mark Damian Sullivan

Where is Mark Damian Sullivan's law office located?
Mark Damian Sullivan's law practice is located in Denver, Colorado. You can contact the office directly through this profile page.
What practice areas does Mark Damian Sullivan handle?
Mark Damian Sullivan focuses on business, real estate, estate litigation, litigation, energy. Each practice area listed reflects experience handling cases of that type in Colorado.
How long has Mark Damian Sullivan practiced law?
Mark Damian Sullivan has 35+ years of legal experience and has been licensed since 1991.
Where did Mark Damian Sullivan go to law school?
Mark Damian Sullivan earned their education at (J.D., 1991); (B.A., 1983).
How can I contact Mark Damian Sullivan for a consultation?
You can contact Mark Damian 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.
What awards or recognition has Mark Damian Sullivan received?
Mark Damian Sullivan's notable recognition includes: AV Preeminent.

Education

J.D.
University of Maryland
- 1991
B.A.
Furman University
- 1983

Awards

AV Preeminent

Bar Admissions

Colorado
Admitted: 1991
U.S. District Court, District of Colorado
Admitted: 1992

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