Atty. John J. Tomaszewski
John J. Tomaszewski is a lawyer practicing patents, trademarks, copyrights and 4 other areas of law.
Copyrights & More Attorney · Serving New Haven, CT · 55+ Years Experience
Profile Summary
About John J. Tomaszewski at a Glance
John J. Tomaszewski is an Associate based in New Haven, Connecticut, practicing at DeLio & Peterson, LLC. They have 55+ years of legal experience, licensed to practice since 1971. Their practice focuses on patent, trademark, copyright, ip, and ip licensing. Admitted to practice in New York (1971), U.S. District Court, Eastern District of New York (1973), and U.S. District Court, Southern District of New York and U.S. Court of Appeals, Federal Circuit regist (1973). Educated at St. John's University (J.D., 1970) and New York University (B.Ch.E. Fairleigh, 1963). Active member of American Intellectual Property Law Association. Serves clients in New Haven, CT and the surrounding metropolitan area.
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About John J. Tomaszewski
- John J. Tomaszewski is a lawyer practicing patents, trademarks, copyrights and 4 other areas of law
- John J. received a B.Ch.E. degree from New York University in 1963, and has been licensed for 55 years
- John J. practices at DeLio & Peterson, LLC in New Haven, CT
Practice Areas Explained
John J. Tomaszewski's Areas of Legal Practice
Each practice area below reflects the types of cases John J. Tomaszewski handles, with a practical overview of what that area of law involves and how it may apply to your situation in New Haven.
Patent Law in New Haven
John J. Tomaszewski is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Connecticut →
Trademark Law in New Haven
John J. Tomaszewski is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in Connecticut →
Copyright Law in New Haven
John J. Tomaszewski is one of 17,404 copyright attorneys indexed nationally. Browse copyright attorneys in Connecticut →
Intellectual Property in New Haven
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
John J. Tomaszewski is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Connecticut →
IP Licensing in New Haven
John J. Tomaszewski is one of 2,726 ip licensing attorneys indexed nationally. Browse ip licensing attorneys in Connecticut →
Jurisdictional Context
Why Local Counsel Matters in New Haven
Practicing law in Connecticut. Legal matters in Connecticut are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New Haven are typically filed in the local municipal court or the appropriate Connecticut state district court, depending on subject matter and amount in controversy. An attorney licensed in Connecticut 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 Connecticut courts without local counsel or pro hac vice admission.
New Haven Courts and Legal Process
Choosing a New Haven-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.
Looking for additional Connecticut attorneys? Browse all attorneys in New Haven or all attorneys in Connecticut.
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Professional Profile
Why Clients in New Haven Choose John J. Tomaszewski
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 John J. Tomaszewski's practice in the field of patent, trademark, copyright, ip, and ip licensing.
Decade-Tested Legal Experience
John J. Tomaszewski brings 55+ 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, Eastern District of New York, and U.S. District Court, Southern District of New York and U.S. Court of Appeals, Federal Circuit regist, John J. Tomaszewski can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering patent, trademark, and copyright, John J. Tomaszewski can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in New Haven
A New Haven-based practice means John J. Tomaszewski 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 John J. Tomaszewski Handles in New Haven
Below is a representative sample of the types of matters John J. Tomaszewski has experience with under Connecticut 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 John J. Tomaszewski directly to discuss the specifics of your situation.
Search Reference
How People Find John J. Tomaszewski Online
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John J. Tomaszewski's Practice Areas & Specializations
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