John Fitzgerald Duffy is the Oswald Symister Colclough Research Professor of Law at the George Washington University Law School in Washington, D.C.  Duffy joined the faculty in 2003 and teaches torts, administrative law, patent law and international intellectual property law.  

After receiving an undergraduate degree in physics from Harvard, he served as articles editor on the University of Chicago Law Review and was awarded an Olin Fellowship in Law and Economics. Duffy clerked for Judge Stephen Williams on the U.S. Court of Appeals for the D.C. Circuit and for Justice Antonin Scalia on the U.S. Supreme Court, served as an attorney adviser in the Department of Justice’s Office of Legal Counsel, and practiced law with the Washington firm of Covington & Burling.

Since entering academia in 1996, Duffy has been on the faculty of the Benjamin N. Cardozo School of Law and the William and Mary School of Law, and has also served as a visiting professor at the University of Chicago. He has published articles in the University of Chicago Law Review, Columbia Law Review, Texas Law Review, and Supreme Court Review, and he is the co-author of a casebook on patent law.  

Duffy has been featured in The New York Times and Business Week for his work on U.S. intellectual property law.

Duffy’s four grandparents hailed from counties Sligo and Mayo.  He and his wife have two children.
 

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