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Paul W. Hughes

Paul W. Hughes

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Appellate Briefs

Read appellate briefs authored by Paul

Paul Hughes is a partner in Mayer Brown’s Supreme Court & Appellate practice in Washington DC. He briefs and argues complex appeals, and he develops legal strategy for trial litigation. Paul has argued before the US Supreme Court twice. He has also argued appeals in the Third, Seventh, Eighth, Ninth, Tenth, Eleventh, DC, and Federal Circuits, and an en banc sitting of the Ninth Circuit. Paul has worked on over 170 appellate matters, more than 110 of which were in the US Supreme Court.

Paul has significant experience with intellectual property appeals. He recently argued a trademark matter in the US Supreme Court (Hana Financial, Inc. v. Hana Bank, No. 13-1211), and a Federal Circuit patent appeal (Lelo v. ITC, No. 13-1582). He has handled more than 30 cases in the Federal Circuit. Recent successes include Rapid Litig. Mgmt. Ltd. v. CellzDirect, Inc., 827 F.3d 1042 (Fed. Cir. 2016), and B.E. Technology, L.L.C. v. Google, Inc. (No. 15-1883).

Additionally, Paul often litigates appeals involving banking and securities law. He recently argued and won a transnational financial case (Toumazou v. HSBC, No. 14-7170) in the DC Circuit. Paul obtained an interlocutory victory in Retirement Board of the Policemen’s Annuity and Benefit Fund v. The Bank of New York Mellon, 775 F.3d 154 (2d Cir. 2014), a closely-watched case involving the Trust Indenture Act.

Paul is a Visiting Clinical Lecturer in Law at the Yale Law School, where he co-teaches Yale’s Supreme Court Advocacy Clinic. In this capacity, Paul regularly represents civil rights, immigration, and criminal defense litigants before the US Supreme Court. He previously held appointments as an adjunct professor at Georgetown, Johns Hopkins, and Yale University, where he taught international and constitutional law.

In 2016, Paul prevailed in Ross v. Blake, No. 15-339, before the US Supreme Court. A critical decision with respect to the Prison Litigation Reform Act, Empirical SCOTUS identified Blake as one of five decisions from October Term 2015 that is “making waves in the lower courts” and will have among “the greatest downstream effects.”

Prior to joining Mayer Brown, Paul served as a law clerk to the Honorable Diana Gribbon Motz, US Court of Appeals for the Fourth Circuit.

Paul received his JD from the Yale Law School, where he served as a senior editor of the Yale Law Journal and was the recipient of the C. LaRue Munson Prize and the Chubb Prize. He received his MA in International Law & Politics, with distinction, and AB, summa cum laude, from Georgetown University.
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