Atty. William Jay Thomashower

Atty. William Jay Thomashower

William Jay Thomashower is a lawyer practicing litigation, intellectual property, antitrust and 2 other areas of law. William received a B.S.M.E. degree from Columbia University in 1970, and has been licensed for 52 years.

New York New York 52 yrs experience 52 year
Call (917) 672-1523 Book Appointment

Profile Summary

About William Jay Thomashower at a glance

William Jay Thomashower is a Partner based in New York, New York, practforg at Pryor Cashman. They have 52+ years of legal experience, licensed to practice since 1974. Their practice focuses on ip, litigation, and entertainment. Admitted to practice in New York (1974), U.S. District Court, Southern District of New York (1974), U.S. District Court, Eastern District of New York (1974), and U.S. Court of Appeals, Second Circuit (1975). Educated at Columbia University (J.D., 1973) and Columbia University (B.S.M.E., 1970). Recognitions include AV Preeminent. Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Jay Thomashower is a lawyer practicing litigation, intellectual property, antitrust and 2 other areas of law
  • William received a B.S.M.E. degree from Columbia University in 1970, and has been licensed for 52 years
  • William practices at Pryor Cashman in New York, NY

Practice Areas Explained

William Jay Thomashower's Areas of Practice

Each practice area below reflects the types of cases William Jay Thomashower handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

William Jay Thomashower is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in New York →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William Jay Thomashower is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New York →

Entertainment & Sports Law

Entertainment lawyers for music, film, sports contracts, talent representation, and IP licensing.

William Jay Thomashower is one of 45,946 entertainment attorneys indexed nationally. Browse entertainment attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practforg law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common questions about William Jay Thomashower

Where is William Jay Thomashower's law office located?
William Jay Thomashower's law practice is located in New York, New York. The firm is Pryor Cashman. You can contact the office directly through this profile page.
What practice areas does William Jay Thomashower handle?
William Jay Thomashower focuses on ip, litigation, entertainment. Each practice area listed reflects experience handling cases of that type in New York.
How long has William Jay Thomashower practiced law?
William Jay Thomashower has 52+ years of legal experience and has been licensed since 1974.
Where did William Jay Thomashower go to law school?
William Jay Thomashower earned their education at (J.D., 1973); (B.S.M.E., 1970).
How can I contact William Jay Thomashower for a consultation?
You can contact William Jay Thomashower 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 William Jay Thomashower received?
William Jay Thomashower's notable recognition includes: AV Preeminent.

Education

J.D.
Columbia University
- 1973
B.S.M.E.
Columbia University
- 1970

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1974
U.S. District Court, Southern District of New York
Admitted: 1974
U.S. District Court, Eastern District of New York
Admitted: 1974
U.S. Court of Appeals, Second Circuit
Admitted: 1975
U.S. Supreme Court
Admitted: 1977
U.S. Court of Appeals, Federal Circuit registered to practice before U.S. Patent and Trademark Offic
Admitted: 1989

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