Reinbold  Derek

Derek Reinbold

Education

  • Harvard Law School, J.D., cum laude, 2018
    • Managing Editor, Harvard Civil Rights-Civil Liberties Law Review
    • Finalist, Ames Moot Court Competition
  • Case Western Reserve University, B.A., summa cum laude, 2014

Clerkships

  • Law Clerk, Judge Sandra L. Lynch, U.S. Court of Appeals, First Circuit, 2018-2019

Admitted

  • 2019, District of Columbia
  • 2022, New York
  • 2023, Supreme Court of the United States

Derek Reinbold represents plaintiffs and defendants in complex civil litigation in federal and state trial and appellate courts. His work encompasses antitrust and securities litigation, product liability and other mass torts, civil antiterrorism claims, government enforcement actions, and disputes involving constitutional rights and the reach of federal law.

Derek maintains an active Supreme Court practice at both the certiorari and merits stages. His representations have included victims of terrorism pursuing claims against multinational companies, public pension funds bringing securities claims, local governments defending their regulatory authority, and individuals challenging criminal sentences and immigration decisions. He has also represented Nobel Prize-winning economists, investment law scholars, leading telecommunications companies, the American Bar Association, and other nonprofit organizations as amici.

In Abraham Watkins v. Festeryga, Derek secured rehearing en banc and successfully argued before the full Fifth Circuit. The unanimous decision overturned a 45-year-old precedent and expanded defendants’ ability to appeal orders sending their cases from federal court back to state court.

At the trial level, Derek defends companies and corporate directors in government enforcement actions, antitrust class actions, and mass-tort litigation.

Derek also maintains an active pro bono practice, including serving as counsel of record for noncitizens seeking review in the U.S. Supreme Court.

Alongside his legal practice, Derek serves as CEO of Dreyer & Reinbold Racing, Inc., continuing a family legacy at the Indianapolis 500 dating to Floyd “Pop” Dreyer in 1927. The team has competed in the Indianapolis 500 since 2000 and will return to a full IndyCar Series schedule in 2027.

Derek joined Kellogg Hansen as an associate in 2019. Before joining the firm, he served as a law clerk to the Honorable Sandra L. Lynch on the U.S. Court of Appeals for the First Circuit. He graduated cum laude from Harvard Law School, where he was a finalist in the Ames Moot Court Competition. He earned his undergraduate degree in art history, international studies, and political science from Case Western Reserve University, graduating summa cum laude.

 

Representative Experience

  • Secured rehearing en banc and successfully argued Abraham Watkins v. Festeryga, 138 F.4th 252 (5th Cir. 2025) (en banc), establishing appellate review of waiver-based remand orders. Obtained reversal of the remand order in subsequent panel proceedings, 155 F.4th 456 (5th Cir. 2025).
  • Represented American service members, civilians, and their families in Antiterrorism Act litigation, including an appeal reversing dismissal of their claims. Atchley v. AstraZeneca UK Ltd., 165 F.4th 592 (D.C. Cir. 2026).
  • Represented injured plaintiffs in appeals and Supreme Court proceedings involving federal preemption of product-liability claims.
  • Defended a healthcare provider in antitrust litigation brought by the Federal Trade Commission and private class plaintiffs.
  • Defended outside corporate directors in tort litigation and state attorney general enforcement actions.
  • Represented a state public pension fund before the Supreme Court in a securities class action concerning disclosures of cybersecurity risks.
  • Served as counsel of record for local governments seeking Supreme Court review of federal preemption of pipeline-siting ordinances.
  • Represented a federal prisoner at the Supreme Court merits stage in a case concerning whether sentencing disparities created by the First Step Act may support compassionate release.
  • Served as counsel of record for investment law scholars submitting a Supreme Court merits brief on pleading requirements for claims that retirement-plan fiduciaries breached ERISA’s duty of prudence.
  • Represented Nobel Prize-winning economists as Supreme Court amici on class certification, economic proof of injury, and private antitrust enforcement.
  • Served as counsel of record for an asylum applicant in a certiorari petition concerning federal courts’ authority to review exceptions to the one-year asylum filing deadline.

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