Atty. Thomas Andrew Decker

Atty. Thomas Andrew Decker

Thomas Andrew Decker is a lawyer practicing business, venture capital, internet and 4 other areas of law. Thomas received a B.A. degree from University of Pennsylvania in 1968, and has been licensed for 55 years.

Philadelphia Philadelphia 55 yrs experience 55 year
Call (267) 925-3017 Book Appointment

Profile Summary

About Thomas Andrew Decker at a glance

Thomas Andrew Decker is a President and Chief Executive Officer based in Philadelphia, Pennsylvania, practicing at Cozen O'Connor. They have 55+ years of legal experience, licensed to practice since 1971. Their practice focuses on business, m&a, adr, and internet. Admitted to practice in Pennsylvania (1971). Educated at University of Pennsylvania (B.A. History, 1968) and University of Virginia School of Law JD - Juris Doctor (—). Recognitions include AV Preeminent. Active member of Philadelphia, Pennsylvania and American Bar Associations. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Thomas Andrew Decker is a lawyer practicing business, venture capital, internet and 4 other areas of law
  • Thomas received a B.A. degree from University of Pennsylvania in 1968, and has been licensed for 55 years
  • Thomas practices at Cozen O'Connor in Philadelphia, PA

Practice Areas Explained

Thomas Andrew Decker's Areas of Practice

Each practice area below reflects the types of cases Thomas Andrew Decker 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.

Thomas Andrew Decker is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →

Mergers & Acquisitions

Thomas Andrew Decker is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Pennsylvania →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Thomas Andrew Decker is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys in Pennsylvania →

Internet & Cyber Law

Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.

Thomas Andrew Decker is one of 17,958 internet attorneys indexed nationally. Browse internet 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 Thomas Andrew Decker

Where is Thomas Andrew Decker's law office located?
Thomas Andrew Decker'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 Thomas Andrew Decker handle?
Thomas Andrew Decker focuses on business, m&a, adr, internet. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Thomas Andrew Decker practiced law?
Thomas Andrew Decker has 55+ years of legal experience and has been licensed since 1971.
Where did Thomas Andrew Decker go to law school?
Thomas Andrew Decker earned their education at (B.A. History, 1968); (—).
How can I contact Thomas Andrew Decker for a consultation?
You can contact Thomas Andrew Decker 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 Thomas Andrew Decker received?
Thomas Andrew Decker's notable recognition includes: AV Preeminent.

Education

B.A. History
University of Pennsylvania
- 1968
University of Virginia School of Law JD - Juris Doctor
- In Progress

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1971

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