Skip to Main Content
Jonathan B. Tropp
Jonathan B. Tropp
Partner
New Haven, CT
| (203) 977-7337
LinkedIn Profile Link vCard for Jonathan B. Tropp PDF for Jonathan B. Tropp (opens in a new tab)

Overview

Jonathan "Jon" Tropp's complex commercial litigation practice includes patent, trademark, copyright, and trade secret litigation. Jon has represented both plaintiffs and defendants ranging from international corporations in nine-figure cases to closely held businesses. In addition to intellectual property cases, Jon has defended, among others, antitrust, insurance coverage, and shareholder litigation matters, including class actions. He serves as mediator in commercial cases. Jon is a registered patent attorney.

Jon is actively engaged in the firm's efforts to promote diversity in the legal profession as a member of the Day Pitney Alliance. He also serves as the firm’s Discovery Practice Partner and on its Conflicts, Ethics and Loss Prevention Committee.

*No aspect of these advertisements have been approved by the highest court of any state. See Awards Methodology.

Experience

No aspect of this advertisement has been approved by the highest court of any state. Prior results do not guarantee a similar outcome.

Tried to defense verdict claims of fraud, breach of warranty, and unfair trade practices against international manufacturer of mass spectrometers

Tried to defense verdict constructive discharge and earn-out claims on behalf of buyer

Representing defendant manufacturer of complex analytical instruments against claims of fraud and breach of warranty in the Central District of California

Representing beverage manufacturer in consumer fraud class action

Secured dismissal of multiple patent and common law claims against international ecommerce vendor, invalidating multiple patents

Secured dismissal of claims of fraud, negligence, and unfair trade practices against international technology company

Successfully represented manufacturer of industrial cutting equipment as plaintiff in copyright lawsuit

Served as monitoring counsel for copyright and trademark infringement action in the Northern District of California

Successfully defended commercial real estate developer against trademark infringement claim in the District of Connecticut, defeating motion for preliminary injunction

Successfully defended manufacturer of unmanned aerial vehicles as insurance defense counsel in trademark litigation in the Southern District of New York

Represented world-famous manufacturer of engine valves and brakes in multi-patent suit in the District of Connecticut and before the International Trade Commission

Successfully represented plaintiff in patent infringement case involving mass spectrometry in the District of Massachusetts

Successfully represented financial services company against claims of infringing a business method patent in District of Delaware

Successfully represented publisher of world famous book series in a commercial dispute in Connecticut Complex Litigation docket

Successfully defended manufacturer of organic coolant and flavor compositions against patents claiming topical and ingestible coolants and flavorants in District of New Jersey

Obtained summary judgment, affirmed on appeal, of noninfringement on behalf of manufacturer of digital televisions in District of Delaware

Obtained summary judgment, affirmed on appeal, dismissing trade secret misappropriation and fraud claims against international instrument manufacturers; partial summary judgment of invalidity of patent in District of Connecticut

Successfully defended manufacturer of optical fibers against multi-patent infringement claims in District of Connecticut

Defeated motion for preliminary injunction, after hearing in District of Connecticut, against a major reinsurer in defense of a trademark infringement action; case settled favorably after denial of injunction was affirmed on appeal in Second Circuit Court of Appeal

Overturned Connecticut Sunday-closing law through constitutional challenge before the Connecticut Supreme Court

Education and Credentials

Education

  • Harvard Law School, J.D., magna cum laude, 1991, executive editor, Harvard Journal of Law & Technology
  • Harvard College, A.B., magna cum laude, 1988, Biochemistry

Admissions

  • State of Connecticut
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court, District of Connecticut
  • U.S. District Court, Southern District of New York
  • U.S. Patent and Trademark Office
  • U.S. Supreme Court

Affiliations

  • International Trademark Association
  • Connecticut Intellectual Property Law Association
  • Hon. Janet Bont Arterton Intellectual Property Inn of Court, past pupillage group leader
  • Connecticut Bar Association, Intellectual Property Section, executive committee
  • New Haven County Bar Association
  • Intellectual Property Owners Association (IPO), U.S. Patent Law and Litigation, and Patent Litigation and Remedies Committees
  • Connecticut Bar Foundation, James W. Cooper Fellow

Recognition and Community

No aspect of this advertisement has been approved by the highest court of any state. Prior results do not guarantee a similar outcome. See Awards Methodology.

Recognitions

Selected as Intellectual Property Litigation Lawyer of the Year for the New Haven Metro Area by The Best Lawyers in America (Woodward/White, Inc.), 2025

Chosen for inclusion in The Best Lawyers in America (Woodward/White, Inc.) for Intellectual Property Litigation, 2023-2025

Named to list of IP Stars by Managing Intellectual Property (Euromoney Institutional Investor PLC), 2022-2024

Selected to the list of Connecticut Super Lawyers (Thomson Reuters), Intellectual Property, 2006, 2010-2024

Recipient of the Anti-Defamation League Daniel R. Ginsberg Leadership Award, 2009

AV Preeminent rated by Martindale-Hubbell

Community Involvement

Town of Trumbull, CT Equity, Diversity and Inclusion Task Force, Vice Chair

Day Pitney Alliance, Leadership Committee

District of Connecticut, Ad Hoc Committee on Local Patent Rules, past member

District of Connecticut, Advisory Committee on Local Civil Rules, past member

Anti-Defamation League, past member of Connecticut Executive Committee, Regional Board, and Civil Rights Committee, past Chair

News & Insights

Thought Leadership

News

View all

In The Media

Publications

Media Mentions

Speaking Engagements

View all

Practices & Industries

EMAIL DISCLAIMER

Thank you for your interest in contacting us by email.

Your e-mail to this individual should not contain any confidential information and should be for general information purposes only. An attorney-client relationship will not be created by your e-mail to this individual. Information in your e-mail may not be entitled to any protections commonly associated with communications with attorneys. If you are in doubt about any information, please exclude it.

If you accept the terms of this notice and would like to send an email, click on the "I Agree" button below. Otherwise, please click "I Don't Agree".

I Agree I Don't Agree