Atty. Glenn Patrick Callahan

Atty. Glenn Patrick Callahan

Glenn Patrick Callahan is a lawyer practicing commercial litigation, class action defense, commercial and 4 other areas of law. Glenn received a A.B. degree from St.

Philadelphia Philadelphia 50 yrs experience 50 year
Call (215) 995-1483 Book Appointment

Profile Summary

About Glenn Patrick Callahan at a glance

Glenn Patrick Callahan is an Attorney based in Philadelphia, Pennsylvania, practicing at McCarter & English, LLP. They have 50+ years of legal experience, licensed to practice since 1976. Their practice focuses on patent, estate planning, business, class action, and zoning. Admitted to practice in New Jersey (1976), U.S. District Court, District of New Jersey (1976), U.S. Court of Appeals, Third Circuit (1981), and Pennsylvania (1986). Educated at Seton Hall University (J.D., 1976) and St. Joseph's College (A.B., 1973). Recognitions include AV Preeminent. Active member of Cape May County, Camden County (President, 1991-1992), New Jersey State and American Bar Associations. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Glenn Patrick Callahan is a lawyer practicing commercial litigation, class action defense, commercial and 4 other areas of law
  • Glenn received a A.B. degree from St. Joseph's College in 1973, and has been licensed for 50 years
  • Glenn practices at McCarter & English, LLP in Philadelphia, PA

Practice Areas Explained

Glenn Patrick Callahan's Areas of Practice

Each practice area below reflects the types of cases Glenn Patrick Callahan handles, with a brief overview of what that area of law covers.

Patent Law

Glenn Patrick Callahan is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Pennsylvania →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Glenn Patrick Callahan is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Pennsylvania →

Business & Corporate Law

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

Glenn Patrick Callahan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →

Class Action

Glenn Patrick Callahan is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in Pennsylvania →

Land Use & Zoning

Glenn Patrick Callahan is one of 40,226 zoning attorneys indexed nationally. Browse zoning 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 Glenn Patrick Callahan

Where is Glenn Patrick Callahan's law office located?
Glenn Patrick Callahan's law practice is located in Philadelphia, Pennsylvania. The firm is McCarter & English, LLP. You can contact the office directly through this profile page.
What practice areas does Glenn Patrick Callahan handle?
Glenn Patrick Callahan focuses on patent, estate planning, business, class action, zoning. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Glenn Patrick Callahan practiced law?
Glenn Patrick Callahan has 50+ years of legal experience and has been licensed since 1976.
Where did Glenn Patrick Callahan go to law school?
Glenn Patrick Callahan earned their education at (J.D., 1976); (A.B., 1973).
How can I contact Glenn Patrick Callahan for a consultation?
You can contact Glenn Patrick Callahan 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 Glenn Patrick Callahan received?
Glenn Patrick Callahan's notable recognition includes: AV Preeminent.

Education

J.D.
Seton Hall University
- 1976
A.B.
St. Joseph's College
- 1973

Awards

AV Preeminent

Bar Admissions

New Jersey
Admitted: 1976
U.S. District Court, District of New Jersey
Admitted: 1976
U.S. Court of Appeals, Third Circuit
Admitted: 1981
Pennsylvania
Admitted: 1986
U.S. District Court, Eastern District of Pennsylvania
Admitted: 1986
U.S. Supreme Court
Admitted: 1988

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.