Desmarais LLP

About Desmarais LLP

Desmarais LLP is an intellectual property law firm whose work centers on litigating disputes that involve complex technology. Its matters include patent infringement cases and other intellectual property disputes, and it represents both plaintiffs and defendants. The firm also handles appeals, including patent appeals at the U.S. Court of Appeals for the Federal Circuit, and appears before the U.S. International Trade Commission and the Patent Trial and Appeal Board. Its disputes span fields such as semiconductors, telecommunications, software, pharmaceuticals, medical devices and biotechnology.

The firm's headquarters is at 230 Park Avenue in Manhattan, New York, NY 10169, where its New York office is located in the Helmsley Building north of Grand Central Terminal. Desmarais LLP also has offices in San Francisco, California and Washington, D.C. The firm states that it handles all stages of litigation, including trial, appeals and proceedings before arbitration panels and administrative bodies.

Practice areas

Areas of work that Desmarais 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 Desmarais LLP.

Registered attorneys

Registration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.