Leason Ellis
Firm overview:
Located just north of the Big Apple, Leason Ellis has grown to be one of the largest IP firms in the state outside of Manhattan. A peer has high praise for the team, commenting that “as a group, Leason Ellis is widely recognised for high-quality trademark and copyright work, with a strong bench of attorneys who deliver excellent results.”
The firm is recognised in the rankings for the calibre of its non-contentious trademark services, which encompass clearance, filing, licensing, maintenance, monitoring, and customs recordation. The experienced team drafts US applications strategically, keeping in mind the avoidance of objections that might delay publication or cost extra money in dealing with Office Actions.
Attorneys are also proficient in enforcing clients’ marks and pursuing oppositions/cancellations before the Trademark Trial and Appeal Board (TTAB). The firm’s team of litigators has handled numerous cases involving all types of trademark rights.
Team overview:
In June 2025, the firm moved to new offices in downtown White Plains, which it said had a modern design tailored for hybrid work, enhanced tech capabilities, and an easily accessible location.
Lauren Emerson co-chairs the Trademark and Copyright Practice Group and has significant experience handling global trademark portfolios, crafting rights agreements, and representing clients before the TTAB.
Key members of the team include Karin Segall, who combines a litigation background with years of experience before the US Patent and Trademark Office (USPTO). Her notable achievements include obtaining trademark protection for recognisable bottle designs, handbags, and shoe ornaments, and counselling on global licensing agreements and due diligence transactions.
Co-chair of the Litigation Practice Group Yuval Marcus is “known to produce an excellent work product”, says an industry counterpart, who adds that Marcus is “a seasoned practitioner whose judgment and experience in trademark litigation and enforcement are well respected in the field”.
Peter Sloane handles all aspects of trademark and copyright counselling, prosecution and litigation. Sloane manages global portfolios for large corporations and enforces clients’ IP rights in the courts and before tribunals across the globe.
