Atty. Mark T. Mullen

Atty. Mark T. Mullen

Mr. Mark T.

Philadelphia Philadelphia 43 yrs experience 43 year
Call (516) 689-0094 Book Appointment

Profile Summary

About Mark T. Mullen at a glance

Mark T. Mullen is a Member based in Philadelphia, Pennsylvania, practicing at Cozen O'Connor. They have 43+ years of legal experience, licensed to practice since 1983. Their practice focuses on environmental and appellate. Admitted to practice in Pennsylvania (1983), U.S. District Court, Eastern District of Pennsylvania (1985), U.S. District Court, Middle District of Pennsylvania (1990), and U.S. Court of Appeals, Seventh Circuit (1995). Educated at Villanova University School of Law (J.D., 1983) and St. Joseph's University (B.S., 1980). Recognitions include AV Preeminent. Active member of Pennsylvania and American Bar Associations Philadelphia Trial Lawyers Association The Association of Trial Lawyers of America. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Mark T. Mullen is a lawyer practicing antitrust & trade law, environmental and natural resources, appeals and 1 other area of law
  • Mark received a B.S. degree from St. Joseph's University in 1980, and has been licensed for 43 years
  • Mark practices at Cozen O'Connor in Philadelphia, PA

Practice Areas Explained

Mark T. Mullen's Areas of Practice

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

Environmental Law

Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.

Mark T. Mullen is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in Pennsylvania →

Appellate Practice

Appellate attorneys for civil and criminal appeals at state and federal court.

Mark T. Mullen is one of 86,319 appellate attorneys indexed nationally. Browse appellate 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 Philadelphia 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 Philadelphia or all attorneys in Pennsylvania.

Frequently Asked

Common questions about Mark T. Mullen

Where is Mark T. Mullen's law office located?
Mark T. Mullen's law practice is located in Philadelphia, Pennsylvania. The firm is Cozen O'Connor. You can contact the office directly through this profile page.
What practice areas does Mark T. Mullen handle?
Mark T. Mullen focuses on environmental, appellate. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Mark T. Mullen practiced law?
Mark T. Mullen has 43+ years of legal experience and has been licensed since 1983.
Where did Mark T. Mullen go to law school?
Mark T. Mullen earned their education at (J.D., 1983); (B.S., 1980).
How can I contact Mark T. Mullen for a consultation?
You can contact Mark T. Mullen 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 T. Mullen received?
Mark T. Mullen's notable recognition includes: AV Preeminent.

Education

J.D.
Villanova University School of Law
- 1983
B.S.
St. Joseph's University
- 1980

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1983
U.S. District Court, Eastern District of Pennsylvania
Admitted: 1985
U.S. District Court, Middle District of Pennsylvania
Admitted: 1990
U.S. Court of Appeals, Seventh Circuit
Admitted: 1995
U.S. District Court, Eastern District of Michigan
Admitted: 1998
U.S. Court of Appeals, Third Circuit U.S. District Court, Northern District of New York Indiana
Admitted: 2000

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.