Atty. Jonathan Justin Greystone

Atty. Jonathan Justin Greystone

Jonathan Justin Greystone is a lawyer practicing business law, international law, commercial law. Jonathan received a M.A. degree from American University, School of International Services in 1984, and has been licensed for 39 years.

Philadelphia Philadelphia 39 yrs experience 39 year
Call (267) 635-9379 Book Appointment

Profile Summary

About Jonathan Justin Greystone at a glance

Jonathan Justin Greystone is an Of Counsel based in Philadelphia, Pennsylvania, practicing at Spector Gadon & Rosen, P.C.. They have 39+ years of legal experience, licensed to practice since 1987. Their practice focuses on business and international. Admitted to practice in Pennsylvania (1987) and New York U.S. District Court, Eastern District of Pennsylvania U.S. District Court, Middle District (1994). Educated at Yeshiva University Benjamin N. Cardozo School of Law (J.D., 1987) and American University, School of International Services (M.A. University, 1984). Recognitions include AV Preeminent. Active member of American Bar Association Philadelphia Lawyers Association American Foreign Service Association. Provides legal services in French Italian. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jonathan Justin Greystone is a lawyer practicing business law, international law, commercial law
  • Jonathan received a M.A. degree from American University, School of International Services in 1984, and has been licensed for 39 years
  • Jonathan practices at Spector Gadon & Rosen, P.C. in Philadelphia, PA

Practice Areas Explained

Jonathan Justin Greystone's Areas of Practice

Each practice area below reflects the types of cases Jonathan Justin Greystone 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.

Jonathan Justin Greystone is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

Jonathan Justin Greystone is one of 40,133 international attorneys indexed nationally. Browse international 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 Jonathan Justin Greystone

Where is Jonathan Justin Greystone's law office located?
Jonathan Justin Greystone's law practice is located in Philadelphia, Pennsylvania. The firm is Spector Gadon & Rosen, P.C.. You can contact the office directly through this profile page.
What practice areas does Jonathan Justin Greystone handle?
Jonathan Justin Greystone focuses on business, international. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Jonathan Justin Greystone practiced law?
Jonathan Justin Greystone has 39+ years of legal experience and has been licensed since 1987.
What languages does Jonathan Justin Greystone speak?
Jonathan Justin Greystone provides legal services in French Italian. Bilingual representation can be especially important when contracts, testimony, or court filings require accurate translation.
Where did Jonathan Justin Greystone go to law school?
Jonathan Justin Greystone earned their education at (J.D., 1987); (M.A. University, 1984).
How can I contact Jonathan Justin Greystone for a consultation?
You can contact Jonathan Justin Greystone 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 Jonathan Justin Greystone received?
Jonathan Justin Greystone's notable recognition includes: AV Preeminent.

Education

J.D.
Yeshiva University Benjamin N. Cardozo School of Law
- 1987
M.A. University
American University, School of International Services
- 1984

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1987
New York U.S. District Court, Eastern District of Pennsylvania U.S. District Court, Middle District
Admitted: 1994

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