Matthew Rozen is a partner in the Washington, D.C. office of Gibson, Dunn & Crutcher.  He practices in the firm’s Appellate and Constitutional Law and Administrative Law and Regulatory practice groups.  His practice includes litigating and enforcing arbitral awards and judgments against foreign states under the Foreign Sovereign Immunities Act, and representing clients in the health insurance and energy industries in high-stakes appeals.

Mr. Rozen has presented oral argument before the United States Court of Appeals for the Third Circuit.  He has authored briefs in more than a dozen cases before the United States Supreme Court and dozens of cases before the federal and state trial and appellate courts, including the majority of federal courts of appeals. Best Lawyers named him as a 2021 and 2022 “One to Watch” in Appellate Practice.

Before joining the firm, Mr. Rozen served as a law clerk to the Honorable Richard A. Posner of the United States Court of Appeals for the Seventh Circuit.  Mr. Rozen graduated with highest honors from the University of Chicago Law School, where he served as an Articles Editor on the University of Chicago Law Review.  Mr. Rozen holds a master’s degree in Comparative Literature from the University of California, Irvine, and received his undergraduate degree in Literature from Harvard University, where he graduated magna cum laude.

Mr. Rozen is admitted to practice in Virginia and the District of Columbia.  He is fluent in Spanish and proficient in French.

Representative matters:

• Representation of individual DACA recipients before the Ninth Circuit and Supreme Court in successful APA challenge to the Trump administration’s 2017 rescission of the DACA program.
• Representation of Crystallex International Corp. in the D.C. Circuit in successfully defending confirmation of a $1.2 billion plus interest arbitral award against Venezuela, and in the Third Circuit in successfully defending the attachment of Venezuela’s indirect interest in the Venezuelan state-owned petroleum company Citgo.
• Represented bondholders before the Supreme Court and multiple appellate courts in successful efforts to collect defaulted Argentine sovereign debt.
• Representation of arbitral award holders in district court actions seeking recognition and enforcement of arbitral awards issued against Spain, Pakistan, and the Democratic Republic of the Congo under the ICSID Convention.
• Represented health insurer in the Third Circuit in obtaining reversal of summary judgment in first federal appellate decision allowing a health insurer to pursue fraud claims against a medical provider based on the provider’s misrepresentations about how it billed patients.
• Represented health insurer in the Fifth Circuit in obtaining reversal of judgment in decision recognizing that the Texas Prompt Pay Statute does not apply to self-funded insurance plans.
• Represented insurer in successful appeal pursuant to AAA appellate arbitration rules resulting in substantial reduction of arbitration award issued in favor of hospital network in reimbursement dispute.
• Represented Planned Parenthood patients in successfully opposing certiorari in high-profile cases addressing patients’ right to sue under the Medicaid Act and 28 U.S.C. § 1983 to challenge decisions by Louisiana and Kansas to exclude Planned Parenthood from Medicaid.
• Representation of pipeline construction company in successfully opposing appeal, and in ongoing proceedings before Ohio Supreme Court, from dismissal of litigation brought by the Ohio EPA challenging aspects of the construction of an interstate natural gas pipeline.
• Representation of government contractor in the D.C. Circuit and in district court in defending high-profile data breach case.
• Drafted briefs in Spanish in the Puerto Rico Supreme Court, Court of Appeals, and trial court on behalf of a bank defending the validity of a tax agreement entered into with the Puerto Rico Department of Treasury.
• Representation of private operator of state-owned toll road in obtaining dismissal of dormant Commerce Clause challenge to Indiana state tolls rates, and in defending dismissal in pending Seventh Circuit appeal.