Eric J. Evain

  • Title: Director
  • Phone: (302) 622-7054
  • Email:
  • Education:

    Widener University School of Law, J.D., cum laude (1998)

    University of Idaho, Ph.D. (1987)

    Northland College, B.S., magna cum laude (1982)

  • Admissions:
    Delaware, Texas, U.S. Patent and Trademark Office, U.S. Supreme Court, U.S. Court of Appeals for the Federal Circuit, U.S. Court of Appeals for the 3rd Circuit, U.S. District Court for the District of DE

Eric Evain, Ph.D., is a director at Grant & Eisenhofer and leads the firm’s intellectual property litigation practice. He has 20 years of experience litigating complex intellectual property infringement cases for many of the world’s largest chemical and manufacturing corporations.

Dr. Evain has represented companies in courts throughout the country across a range of fields, including specialty chemicals, pharmaceuticals, polymers, petroleum, and consumer products. Recently, Dr. Evain prevailed in a jury trial in the District of Delaware representing global specialty chemical company Evonik in a consolidated patent infringement action over metathesis catalysts. The verdict in Evonik Degussa v. Materia confirmed the validity of Evonik’s patent that was based on the groundbreaking discovery of Professor Wolfgang Herrmann, the President of the Technical University of Munich. Prior to trial, Dr. Evain and his team were able to have Materia’s defenses stricken based on preclusion, win every summary judgment motion, and obtain favorable rulings on every claim term in dispute. After trial, the team successfully obtained a permanent injunction against Materia. Over the years, Dr. Evain’s litigation successes have earned his clients over $500 million.

Prior to becoming an attorney, Dr. Evain was a corporate research scientist for 12 years in the specialty chemicals, catalyst and petroleum industries. From 1997-1998, Dr. Evain served as a law clerk to Justice Joseph T. Walsh of the Delaware Supreme Court.

Dr. Evain has lectured on intellectual property all over the world, and is often invited to speak on current topics in intellectual property law. He is named inventor on numerous patents and has written and presented over a dozen scientific and legal articles, including: “Contingency Fees Make Patent Enforcement Accessible” (, February 2018); “Mozart: a Good Patent Litigator; Beethoven: a Mean One” (, November 2013); and “How To Quickly Defeat Meritless Inequitable Conduct Claims” (, April 2013).

Dr. Evain is a 1982 magna cum laude graduate of Northland College in Ashland, Wisconsin, and a 1987 graduate of the University of Idaho, where he received his Ph.D. He earned his J.D. from Widener University School of Law, cum laude, in 1998.