Atty. Daniel Quentin Harrington

Atty. Daniel Quentin Harrington

Daniel Quentin Harrington is a lawyer practicing ethics / professional responsibility, antitrust / trade law, venture capital and 1 other area of law. Daniel received a B.A. degree from University of Iowa in 1979, and has been licensed for 45 years.

Philadelphia Philadelphia 45 yrs experience 45 year
Call (267) 222-1172 Book Appointment

Profile Summary

About Daniel Quentin Harrington at a glance

Daniel Quentin Harrington is a Member based in Philadelphia, Pennsylvania, practicing at Cozen O'Connor. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on business. Admitted to practice in Minnesota (1981), New Jersey (1984), Pennsylvania (1984), and New York (1992). Educated at University of Iowa College of Law (J.D., 1981) and University of Iowa (B.A., 1979). Recognitions include Peer Reviewed. Active member of Philadelphia, Pennsylvania (Member, Committee on Legal Ethics and Professional Responsibility), New Jersey State, Minnesota State and American Bar Associations. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Daniel Quentin Harrington is a lawyer practicing ethics / professional responsibility, antitrust / trade law, venture capital and 1 other area of law
  • Daniel received a B.A. degree from University of Iowa in 1979, and has been licensed for 45 years
  • Daniel practices at Cozen O'Connor in Philadelphia, PA

Practice Areas Explained

Daniel Quentin Harrington's Areas of Practice

Each practice area below reflects the types of cases Daniel Quentin Harrington 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.

Daniel Quentin Harrington is one of 501,317 business attorneys indexed nationally. Browse business 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 Daniel Quentin Harrington

Where is Daniel Quentin Harrington's law office located?
Daniel Quentin Harrington'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 Daniel Quentin Harrington handle?
Daniel Quentin Harrington focuses on business. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Daniel Quentin Harrington practiced law?
Daniel Quentin Harrington has 45+ years of legal experience and has been licensed since 1981.
Where did Daniel Quentin Harrington go to law school?
Daniel Quentin Harrington earned their education at (J.D., 1981); (B.A., 1979).
How can I contact Daniel Quentin Harrington for a consultation?
You can contact Daniel Quentin Harrington 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 Daniel Quentin Harrington received?
Daniel Quentin Harrington's notable recognition includes: Peer Reviewed.

Education

J.D.
University of Iowa College of Law
- 1981
B.A.
University of Iowa
- 1979

Awards

Peer Reviewed

Bar Admissions

Minnesota
Admitted: 1981
New Jersey
Admitted: 1984
Pennsylvania
Admitted: 1984
New York
Admitted: 1992
Indiana
Admitted: 2010

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