Leason Ellis LLP

Leason Ellis LLP

USA

Leason Ellis LLP
One Barker Avenue
White Plains, New York 10601
United States of America (USA)
T  914.288.0022
www.leasonellis.com
David Leason – Managing Partner – leason@leasonellis.com


Leason Ellis is one of the largest IP firms in New York outside of Manhattan and rated among the top firms in the state for our patent, trademark, and copyright services.  Our broad array of clients range from Fortune 100 companies, to midsize and small companies, to start-ups, inventors and entrepreneurs.  

We protect the IP rights of domestic clients in the U.S. and abroad and, in turn, we directly represent many global companies in protecting their rights in the U.S.  We also work on behalf of foreign law firms to develop and enforce their clients’ intellectual property rights here.  

Our unique approach to building a business has allowed us to be more sensitive to our clients’ needs as well as responsive to their communications.  Our strategic size encourages collegiality among attorneys and staff and works to the benefit of our clients, who gain the most from the teamwork we foster.

Areas of specialisation:

  • Patents
  • Trademarks
  • Copyrights
  • Trade Secrets
  • Litigation
  • Domain Name Disputes
  • Licensing
  • Due Diligence

Association memberships:

  • International Trademark Association (INTA)
  • Intellectual Property Owners Association (IPO)
  • American Intellectual Property Law Association (AIPLA)
  • New York Intellectual Property Law Association (NYIPLA)
  • Copyright Society of the USA (CSUSA)
  • European Trade Mark Protection Association (Marques)
  • Pharmaceutical Trade Marks Group (PTMG)
  • European Communities Trade Mark Association (ECTA)

Leaders profiles

Matthew L. Frisbee

Matthew L. Frisbee

Matt Frisbee is a key piece of the firm’s trademark portfolio management and counseling practice, overseeing the domestic and…

Karin Segall

Karin Segall

Karin Segall represents clients of varied sizes in a wide range of industries through the life cycle of their trademark and copyright…

Lauren B. Emerson

Lauren B. Emerson

Lauren Emerson co-chairs the Trademark and Copyright Practice Group at Leason Ellis where she helps clients establish and enforce…

Yuval H. Marcus

Yuval H. Marcus

Yuval Marcus co-chairs the litigation practice group at Leason Ellis, where he and his team litigate IP disputes in federal district…

Cameron S. Reuber

Cameron S. Reuber

Cameron Reuber co-chairs the litigation practice group at Leason Ellis. He trains and oversees dozens of professionals proficient…

David Leason

David Leason

David Leason is the managing partner at Leason Ellis and has an extensive practice that focuses on patent prosecution and counseling.…

Edward J. Ellis

Edward Ellis co-founded Leason Ellis and co-chairs the patent practice group at the firm. Ellis specialises in domestic and foreign…

Dr. Susie Cheng

Dr. Susie Cheng

Dr. Susie Cheng is a partner and member of the biotech/pharma group at Leason Ellis. She focuses on all aspects of US and global…

Melvin Garner

Melvin Garner

Mel Garner chairs the Japan practice group at Leason Ellis, which focuses on providing patent and trademark services for Japanese…

Dr. Michael A. Davitz

Michael Davitz, a partner at Leason Ellis, is a registered US patent attorney and physician with over 15 years in biomedical research,…

Robert M. Isackson

Robert M. Isackson

Robert Isackson is an accomplished, front-line IP litigator, counselor, and advisor fluent in all aspects of patents, trade secrets,…

Elizabeth Barnhard

Elizabeth Barnhard

Elizabeth Barnhard chairs the pharma/biotech practice group at Leason Ellis. She is an astute risk manager, a percipient counselor…

Peter S. Sloane

Peter S. Sloane

Peter Sloane co-chairs the Trademark and Copyright Practice Group at Leason Ellis, where he and his team handle all aspects of…

Martin Schwimmer

Martin Schwimmer

Martin Schwimmer is a partner in the trademark and copyright practice group at Leason Ellis who litigates in US federal district…

WIPR