IN RE MARRIOTT INTERNATIONAL, INC.

No. 22-1744, No. 22-1745.

78 F.4th 677 (2023)

IN RE: MARRIOTT INTERNATIONAL, INC., Customer Data Security Breach Litigation, Peter Maldini; Paula O'Brien; Robert Guzikowski; Denitrice Marks; Maria Maisto; Irma Lawrence; Michaela Bittner; Kathleen Frakes Hevener; Brent Long; David Viggiano; Eric Fishon; Annemarie Amarena; Roger Cullen, all proceeding individually and on behalf of all others similarly situated, Plaintiffs-Appellees, v. Accenture LLP, Defendant-Appellant. The Chamber of Commerce of the United States of America; The National Retail Federation, Amici Supporting Appellants. The National Association of Consumer Advocates; Public Justice; Electronic Frontier Foundation; Electronic Privacy Information Center, Amici Supporting Appellees. In re: Marriott International, Inc., Customer Data Security Breach Litigation. Peter Maldini; Roger Cullen; Paula O'Brien; Robert Guzikowski; Denitrice Marks; Maria Maisto; Irma Lawrence; Michaela Bittner; Kathleen Frakes Hevener; Annemarie Amarena; Brent Long; David Viggiano; Eric Fishon, All Proceeding Individually and on Behalf of All Others Similarly Situated, Plaintiffs-Appellees, v. Marriott International, Incorporated, Defendant-Appellant. The Chamber of Commerce of the United States of America; The National Retail Federation, Amici Supporting Appellants. National Association of Consumer Advocates; Public Justice; Electronic Frontier Foundation; Electronic Privacy Information Center, Amici Supporting Appellees.

United States Court of Appeals, Fourth Circuit.

Decided: August 18, 2023.


Attorney(s) appearing for the Case

ARGUED: Matthew S. Hellman , JENNER & BLOCK LLP, Washington, D.C.; Devin S. Anderson , KIRKLAND & ELLIS, LLP, Washington, D.C., for Appellants. Amy Elisabeth Keller , DICELLO LEVITT GUTZLER LLC, Chicago, Illinois, for Appellees. ON BRIEF: Craig S. Primis , Emily M. Long , Katherine E. Canning , KIRKLAND & ELLIS LLP, Washington, D.C., for Appellant Accenture LLP. Daniel R. Warren , Lisa M. Ghannoum , Dante A. Marinucci , Kyle T. Cutts , Cleveland, Ohio, Gilbert S. Keteltas , BAKER & HOSTETLER LLP, Washington, D.C.; Lindsay C. Harrison , Zachary C. Schauf , Kevin J. Kennedy , Mary E. Marshall , Raymond B. Simmons , JENNER & BLOCK LLP, Washington, D.C., for Appellant Marriott International, Inc. James J. Pizzirusso , Washington, D.C., Megan Jones , HAUSFELD LLP, San Francisco, California; Andrew N. Friedman , COHEN MILSTEIN SELLERS & TOLL PLLC, Washington, D.C.; Norman E. Siegel , Kasey Youngentob , STUEVE SIEGEL HANSON LLP, Kansas City, Missouri; Jason L. Lichtman , Sean A. Petterson , LIEFF CABRASER HEIMANN & BERNSTEIN, LLP, New York, New York; MaryBeth V. Gibson , THE FINLEY FIRM, P.C., Atlanta, Georgia; Megan Jones , HAUSFELD LLP, San Francisco, California; Timothy Maloney , Veronica Nannis , JOSEPH GREENWALD & LAAKE, P.A., Greenbelt, Maryland; Gary F. Lynch , LYNCH CARPENTER, LLP, Pittsburgh, Pennsylvania; James Ulwick , KRAMON & GRAHAM PA, Baltimore, Maryland; Daniel Robinson , ROBINSON CALCAGNIE, INC., Newport Beach, California; Ariana J. Tadler , TADLER LAW LLP, New York, New York, for Appellees. Jennifer B. Dickey , Jordan L. Von Bokern , UNITED STATES CHAMBER LITIGATION CENTER, Washington, D.C., for Amicus Chamber of Commerce of the United States of America. Stephanie A. Martz , NATIONAL RETAIL FEDERATION, Washington, D.C., for Amicus National Retail Federation. Ashley C. Parrish , Julianne L. Duran , KING & SPALDING LLP, Washington, D.C., for Amici Chamber of Commerce of the United State of America and National Retail Federation. Ira Rheingold , NATIONAL ASSOCIATION OF CONSUMER ADVOCATES, Washington, D.C., for Amicus National Association of Consumer Advocates. Shelby Leighton , PUBLIC JUSTICE, Washington, D.C., for Amicus Public Justice. Hassan A. Zavareei , Glenn E. Chappell , Spencer S. Hughes , Cameron Partovi , Schuyler Standley , TYCKO & ZAVAREEI LLP, Washington, D.C., for Amici National Association of Consumer Advocates and Public Justice. Cindy A. Cohn , Adam Schwartz , ELECTRONIC FRONTIER FOUNDATION, San Francisco, California, for Amicus Electronic Frontier Foundation. Chris Frascella , Megan Iorio , Tom McBrien , ELECTRONIC PRIVACY INFORMATION CENTER (EPIC), Washington, D.C., for Amicus Electronic Privacy Information Center. Jean Sutton Martin , John A. Yanchunis , Kenya J. Reddy , MORGAN & MORGAN COMPLEX LITIGATION GROUP, Tampa, Florida, for Amici Electronic Frontier Foundation and Electronic Privacy Information Center.

Vacated and remanded by published opinion. Judge Harris wrote the opinion, in which Judge Niemeyer and Judge King joined.


In November 2018, Marriott International, Inc., announced that hackers had breached one of its guest reservation databases, giving them access to millions of guest records. Customers across the country began filing lawsuits, which were consolidated into multidistrict litigation in Maryland. The plaintiffs then moved...

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