John M. Desmarais - Desmarais LLP
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John M. Desmarais

Listed in Best Lawyers since 2006

John M. Desmarais is the founding partner of Desmarais LLP, and the founder and owner of Round Rock Research LLC.  In 1988, after graduating from NYU Law School, Mr. Desmarais started his career at Fish & Neave.  Then, after practicing in the area of intellectual property litigation and counseling for several years, he left private practice to serve as an Assistant United States Attorney in the Southern District of New York, where for three years (1992-1995) he tried criminal jury trials for the federal government. After leaving the government, Mr. Desmarais returned to the practice of intellectual property litigation at Fish & Neave, and later joined the New York office of Kirkland & Ellis.  From 1997-2009, he was a partner at Kirkland and served as a member of the Firm Management Committee from 2004-2009.  After 13 years at Kirkland, he left to found both Desmarais LLP, an IP trial boutique, and Round Rock Research LLC, a patent licensing company. Mr. Desmarais is a member of the bars of New York and Washington, D.C., the U.S. Supreme Court, the Federal Circuit Court of Appeals, and various other federal district courts and courts of appeal. Mr. Desmarais is also registered to practice before the United States Patent and Trademark Office.  Mr. Desmarais obtained a degree in Chemical Engineering from Manhattan College and a law degree from New York University.

New York UniversityJ.D. 1988Manhattan CollegeCh.E 1985

Client Comments

"John Desmarais is an excellent trail attorney. He is perhaps the best lead litigator that we use."

Office Location

230 Park Avenue
New York, NY 10169
United States


Lawyer of the Year Awards

2017 Lawyer of the Year in Litigation - Patent of the New York City Metro Area2012 Lawyer of the Year in Litigation - Patent of the New York City Metro Area
John M. Desmarais has earned a Lawyer of the Year award for 2017!John M. Desmarais has earned a Lawyer of the Year award for 2012!

Practice Areas

Litigation - Intellectual Property
Litigation - Patent