Peter B. Siegal

Partner
Norton Rose Fulbright US LLP

Washington, DC
United States
T:+1 202 662 4663
Washington, DC
United States
T:+1 202 662 4663
Peter B. Siegal

Peter B. Siegal

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Biography

Peter B. Siegal is an appellate partner in Norton Rose Fulbright's Washington, D.C. office. His practice focuses principally on complex, high-stakes litigation in the Supreme Court of the United States and the federal courts of appeals, where he routinely argues and wins high-dollar-value cases in a broad range of subject areas. Peter also often practices before federal agencies and trial courts, where he is regularly called upon to develop case-dispositive strategy and oversee briefing in his clients’ most significant matters. Peter has been recognized as one of the leaders of the appellate bar's next generation by an array of the Country's top legal publications, including Super Lawyers Magazine (which has honored him as a "Rising Star" eight years running), Benchmark Litigation (which lists him as one of the top lawyers 40 or younger nationwide), and the National Law Journal (which lists him as one of Washington, D.C.'s top lawyers 40 or younger in any practice). As of 2024, Peter is also ranked among the top Federal Circuit practitioners by Patexia, which analyzes patent-related appeals from 2019 through 2023.

Peter also maintains an active pro bono practice and is a past recipient of the Jaworski Award, which is Norton Rose Fulbright's highest pro bono honor. In addition, he is a participant in The Appellate Project's Mentorship Program, which is the first national effort focused on empowering law students of color to pursue appellate work, and a member of the Edward Coke Appellate Inn of Court.

Peter joined Norton Rose Fulbright in 2018, after practicing at a litigation boutique in Washington, D.C., and serving as a law clerk to the Honorable William J. Kayatta, Jr., of the United States Court of Appeals for the First Circuit. He lives in Bethesda, Maryland, with his wife and young daughter.

Professional experience

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JD, magna cum laude, Northwestern University School of Law
BA, University of Wisconsin-Madison

Peter is admitted to practice in the following courts and jurisdictions:

  • District of Columbia
  • Supreme Court of the United States
  • United States Court of Appeals, Federal Circuit
  • United States Court of Appeals, D.C. Circuit
  • United States Court of Appeals, First Circuit
  • United States Court of Appeals, Second Circuit
  • United States Court of Appeals, Third Circuit
  • United States Court of Appeals, Fourth Circuit
  • United States Court of Appeals, Fifth Circuit
  • United States Court of Appeals, Sixth Circuit
  • United States Court of Appeals, Seventh Circuit
  • United States Court of Appeals, Eighth Circuit
  • United States Court of Appeals, Ninth Circuit
  • United States Court of Appeals, Tenth Circuit
  • United States Court of Appeals, Eleventh Circuit
  • California (inactive)
  • District of Columbia Bar
  • Argued and won Federal Circuit appeal challenging adverse ruling by Patent Trial & Appeal Board.
  • Argued and won D.C. Circuit appeal challenging adverse ruling by Federal Energy Regulatory Commission.
  • Argued $380M tax case in Second Circuit. (Decision pending.)
  • Briefed numerous successful petitions for immediate review of class-certification orders in nine- and ten-figure class actions.
  • Briefed numerous successful motions to dismiss patent appeals on Article III grounds for major technology company.
  • Briefed successful motion for total summary judgment in $500M civil RICO case.
  • Drafted dozens of merits briefs, amicus briefs, and petitions for certiorari for a wide range of clients in the Supreme Court of the United States, including as counsel of record.
  • Successfully briefed Federal Circuit challenge to award of nine-figure aerospace-defense contract.
  • Represented group of former United States Attorneys and Assistant United States Attorneys, as well former United States district judge, in en banc proceedings before the United States Court of Appeals for the Fifth Circuit.
  • Benchmark Litigation, US 40 and Under List, Euromoney Institutional Investor PLC, 2024
  • Washington, D.C. Rising Stars, National Law Journal, 2024
  • Washington, D.C.  Super Lawyers: Rising Star, Appellate, Thomson Reuters, 2017-2024

  • CAFC Intelligence Report, Top 8 percent representing appellees, Top 6 percent overall, Patexia Inc., 2024

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