John M Desmarais

Partner at Desmarais LLP

John M Desmarais is the founding partner of Desmarais LLP. In 1988, after graduating from New York University Law School, Mr Desmarais started his career at Fish & Neave. After practising in the area of IP litigation and counselling for several years, he left private practice to serve as an assistant US attorney in the Southern District of New York, where from 1992 to 1995 he tried criminal jury trials for the federal government. After leaving the government, Mr Desmarais returned to the practice of IP litigation at Fish & Neave, later joining the New York office of Kirkland & Ellis. From 1997 to 2009 he was a partner at Kirkland, and he served as a member of the firm management committee from 2004 to 2009. After 13 years at Kirkland, he left to found IP trial boutique Desmarais LLP.

Mr Desmarais is a member of the Bars of California, New York, Washington DC, the US Supreme Court, the Federal Circuit Court of Appeals and various other federal district courts and courts of appeal. Mr Desmarais is also registered to practise before the USPTO. He obtained a degree in chemical engineering from Manhattan College and a law degree from New York University.

Professional memberships

  • American Bar Association
  • American Institute of Chemical Engineers
  • California Bar Association
  • DC Bar Association
  • Federal Bar Council
  • New York Bar Association
  • New York City Bar Association
  • New York County Lawyers’ Association
  • New York Intellectual Property Law Association


  • “The Sedona Conference Commentary on Patent Damages & Remedies”, The Sedona Conference Journal, Volume 15, 53 (editor in chief and chair, Working Group 9, Autumn 2014)
  • “State Responses to Leaking Underground Petroleum Storage Tanks”, Annual Survey of American Law, 731 (1987)


  • Manhattan College, BChE, 1985
  • New York University School of Law, JD, 1988

Professional associations

  • ABA
  • AIChE

Firm details

Desmarais LLP
230 Park Avenue
New York NY 10169
United States

Contact details

See firm profile