About Leason Ellis LLP
Leason Ellis LLP is an intellectual property law firm based in White Plains, New York. Its work covers patent, trademark, and copyright matters, including counseling, filing and prosecution, licensing, due diligence, trade secrets, and domain name disputes. The firm says it advises companies ranging from Fortune 100 businesses to startups, inventors, and entrepreneurs, and it also represents foreign law firms seeking U.S. counsel.
The firm's litigation practice handles patent, trademark, copyright, trade secret, and false advertising disputes in federal courts, before the USPTO, and before the International Trade Commission. It also handles post-grant patent proceedings and reports work in alternative dispute resolution, including private mediations and court-organized mediation programs. Its listed office is in White Plains, from which it states it serves clients across the United States and internationally.
| Type | Law firm |
|---|---|
| New York offices | White Plains |
| Phone | 914.288.0022 |
| Website | leasonellis.com |
| Registered NY attorneys | 33 |
Practice areas
Areas of work that Leason Ellis LLP describes on its own website. They describe the organization as a whole, not the practice of any individual attorney listed below.
Organization profile based on its official website and public sources (reviewed October 29, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with Leason Ellis LLP.
Registered attorneys
James Haley Currently registered Melvin Garner Currently registered Elizabeth Barnhard Currently registered Robert Isackson Currently registered Karin Segall Currently registered Anthony Natoli Currently registered David Leason Currently registered Howard Grossman Currently registered Michael Davitz Currently registered Dexter Chang Currently registeredRegistration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.