Atty. Mark R. Sullivan

Atty. Mark R. Sullivan

Mark R. Sullivan is a lawyer practicing small businesses, contracts, real estate and 20 other areas of law.

Sewickley Sewickley 43 yrs experience 43 year
Call (878) 978-2394 Book Appointment

Profile Summary

About Mark R. Sullivan at a glance

Mark R. Sullivan is a Principal based in Sewickley, Pennsylvania, practicing at Liberty Mark Law. They have 43+ years of legal experience, licensed to practice since 1983. Their practice focuses on formation, contracts, family law, business, and real estate. Admitted to practice in Pennsylvania (1983). Educated at University of Pittsburgh (J.D., 1983) and University of Virginia (B.A., 1980). Recognitions include AV Preeminent. Serands clients in Sewickley, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark R. Sullivan is a lawyer practicing small businesses, contracts, real estate and 20 other areas of law
  • Mark received a B.A. degree from University of Virginia in 1980, and has been licensed for 43 years
  • Mark practices at Liberty Mark Law in Sewickley, PA

Practice Areas Explained

Mark R. Sullivan's Areas of Practice

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

Business Formation

Mark R. Sullivan is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Pennsylvania →

Contracts

Mark R. Sullivan is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Pennsylvania →

Family Law

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

Mark R. Sullivan is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Pennsylvania →

Business & Corporate Law

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

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

Real Estate Law

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

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

Jurisdictional Context

Why local counsel matters in Pennsylvania

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

Looking for additional Pennsylvania attorneys? Browse all attorneys in Sewickley or all attorneys in Pennsylvania.

Frequently Asked

Common questions about Mark R. Sullivan

Where is Mark R. Sullivan's law office located?
Mark R. Sullivan's law practice is located in Sewickley, Pennsylvania. The firm is Liberty Mark Law. You can contact the office directly through this profile page.
What practice areas does Mark R. Sullivan handle?
Mark R. Sullivan focuses on formation, contracts, family law, business, real estate. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Mark R. Sullivan practiced law?
Mark R. Sullivan has 43+ years of legal experience and has been licensed since 1983.
Where did Mark R. Sullivan go to law school?
Mark R. Sullivan earned their education at (J.D., 1983); (B.A., 1980).
How can I contact Mark R. Sullivan for a consultation?
You can contact Mark R. 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 R. Sullivan received?
Mark R. Sullivan's notable recognition includes: AV Preeminent.

Education

J.D.
University of Pittsburgh
- 1983
B.A.
University of Virginia
- 1980

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1983

Reviews

5.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.