Our People

Dennis S. Prahl


Phone: (212) 708-1817

Dennis S. Prahl is a Partner of Ladas & Parry in the New York office.

Dennis has been consistently recognized as one of the leading trademark practitioners in the world by the World Trademark Review and Euromoney/MIP.  Dennis specializes in the areas of international trademark, copyright, domain name, right of publicity and unfair competition law.  He has represented and advised a wide range of clients in diverse fields, from multinational corporations to individuals.

He received his B.A. from Northwestern College and his J.D. from New York Law School.  In addition, he holds a diploma in Advanced International Legal Studies from the McGeorge School of Law.

He has authored and co-authored several publications on the topics of trademark law, unfair competition, merchandising, and domain names and has been a guest lecturer on the topics of international trademark law and intellectual property at the Benjamin N. Cardozo School of Law, the Fordham University School of Business and Fordham Law School.  He is a frequent speaker at numerous intellectual property conferences throughout the United States, Canada, and China.  He has also been frequently quoted in the media on intellectual property matters.  Dennis serves as president of Principium Strategies, Ladas & Parry’s affiliated Brand monitoring service and ICANN-accredited domain name registrar subsidiary.

In his free time, when he can find it, Dennis enjoys spending time with his family, music, skiing, hiking, and walking his Whoodle.


Northwestern College (B.A., 1986)
New York Law School (J.D., 1989)
McGeorge School of Law (Diploma in Advanced International Legal Studies, 1990)


New York

Key Industries
  • Consumer Products
  • Internet (Domain Names)
  • Travel and Hospitality
  • Fashion
  • Digital Media
Associations & Organizations

Association Internationale pour la Protection de la Proprieté Industrielle (AIPPI), Standing Committee on Trademarks (current)
International Trademark Association; Internet Committee, Online Use Subcommittee (current)
American Intellectual Property Lawyers Association (AIPLA)
New York County Lawyers Association – Committee on Foreign and International Law; Committee on Entertainment, Music and Intellectual Property
Intellectual Property Owners Association – Corporate IP Management Committee (former); Domain Names and Social Media Committee (current)
Intellectual Property Constituency – ICANN

Publications & Presentations

See Posts By Dennis S. Prahl

The New Generic Top-Level Domain Program: A New Era of Risk for Trademark Owners and the Internet, Trademark Reporter
New and Upcoming Domain Names Present New Risks, IPO
Intellectual Property Law, 2014 Edition: Leading Lawyers on Trends and Key Strategies for the Upcoming Year
Do Domains Really Matter? ABA Annual Meeting Panelist, Boston, August 2014
The Intellectual Property Considerations in Spin-Offs: U.S., Lawyer Monthly, July 2013
The Expanding Madrid System: A Practical and Comparative Evaluation28th Annual ABA Intellectual Property Law Section Spring Conference Panelist,  April 2013
Generic Top Level Domain Names: What the Recent Expansion Means for Your Brand – ABA Webinar Speaker, April 2012

  • IP Stars – United States & New York, 2014, Managing Intellectual Property Magazine
  • IP Stars – New York, 2013 , Managing Intellectual Property Magazine
  • World’s Leading Trademark Professionals
    • 2017 (described as “a cost-effective, detail-oriented attorney who has sound judgement and a great work ethic”)
    • 2016 (described as having a “hawkish eye”  and providing “cradle-to-grave protection and enforcement work” that “is the talk of the town”)
    • 2015 (“Brand owners seeking long-term custodians for their marks cannot afford to ignore dedicated IP outfit Ladas & Parry.  Conducting large-scale registrations and managing complex transactions with a practices hand, it is home to a number of ‘amazing’ attorneys, including Dennis Prahl.  The president of the firm’s domain name registry, this leading prosecutor manages international filings and internet issues for a mix of multinationals and sole practitioners.”)
    • 2014 (Go-to tactician Dennis Prahl  “understands the challenges involved in clearing and protecting numerous prestigious brands and always accounts for the client’s urgency in getting products to market”. )
    • 2013 (is singled out for his business awareness and fast reactions.  He is also a popular writer and speaker on a variety of trademark topics)
    • 2012 (“brings business acumen and an appreciation of the cost-benefit analysis that is often lacking in outside counsel”..”his presence and knowledge in boardroom meetings are invaluable”)
    • 2011 (“a pleasure to deal with”)
  • The Legal Media Group Expert Guides to the World’s Leading Lawyers – Trademark Law Practitioners – 2014

Expert Guides Trademark Law 2014






  • Acquisition International Magazine 2014 M&A Awards – International Trademark Specialist of the Year – USA
  • The Legal Media Expert Group Guides to the World’s Leading Lawyers – Trademark Law Practitioners – 2012
  • NYLS Alexander D. Forger Outstanding Service to the Profession Award
  • NYLS Moot Court Association Outstanding Service Award
  • American Jurisprudence Moot Court Award
  • Order of the Barrister – 1989
  • 1989 Jessup International Moot Court Competition: Alona E. Evans Award for Int’l Round Best Brief