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.
Antitrust & More Attorney · Serving New York, NY · 52+ Years Experience
Profile Summary
About William Jay Thomashower at a Glance
William Jay Thomashower is a Partner based in New York, New York, practicing 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. Serves clients in New York, NY and the surrounding metropolitan area.
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About 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
- William practices at Pryor Cashman in New York, NY
Practice Areas Explained
William Jay Thomashower's Areas of Legal Practice
Each practice area below reflects the types of cases William Jay Thomashower handles, with a practical overview of what that area of law involves and how it may apply to your situation in New York.
Intellectual Property in New York
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
William Jay Thomashower is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in New York →
Civil Litigation in New York
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
William Jay Thomashower is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in New York →
Entertainment & Sports Law in New York
Entertainment lawyers for music, film, sports contracts, talent representation, and IP licensing.
William Jay Thomashower is one of 45,619 entertainment attorneys indexed nationally. Browse entertainment attorneys in New York →
Jurisdictional Context
Why Local Counsel Matters in New York
Practicing 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 venue, 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.
New York Courts and Legal Process
Choosing a New York-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
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Professional Profile
Why Clients in New York Choose William Jay Thomashower
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish William Jay Thomashower's practice in the field of ip, litigation, and entertainment.
Decade-Tested Legal Experience
William Jay Thomashower brings 52+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in New York, U.S. District Court, Southern District of New York, and U.S. District Court, Eastern District of New York, William Jay Thomashower can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering ip, litigation, and entertainment, William Jay Thomashower can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in New York
A New York-based practice means William Jay Thomashower attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues William Jay Thomashower Handles in New York
Below is a representative sample of the types of matters William Jay Thomashower has experience with under New York law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact William Jay Thomashower directly to discuss the specifics of your situation.
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How People Find William Jay Thomashower Online
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William Jay Thomashower's Practice Areas & Specializations
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