Client Marriott Secures Second Interlocutory Appeal of Class Certification in Multi-District Litigation Regarding Data Security Incident
News
January 19, 2024
Jenner & Block has once again secured review by the US Court of Appeals for the Fourth Circuit for client Marriott International’s interlocutory appeal of class certification in multi-district litigation regarding a data security incident. This is the second time the Fourth Circuit will hear the interlocutory appeal. In August 2023 the appellate court vacated class certification and ruled that the district court erred in not considering the applicability of a waiver at the certification stage.
Yet just last month, the district court once again certified the damage classes. If the district court’s ruling is allowed to stand, the recertification order would have enormous implications for class litigation, multidistrict litigation, and class-action waivers.
Partner Matt Hellman said, “We are pleased the Fourth Circuit has again granted review. We believe the recertification order should be vacated, just as the last one was.”
In addition to Matt and Partner Lindsay Harrison, the Jenner & Block team includes Partners Elizabeth Deutsch and Michelle Kallen and Associates Leslie Bruce, Mary Marshall.
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© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.
News
January 19, 2024
Jenner & Block has once again secured review by the US Court of Appeals for the Fourth Circuit for client Marriott International’s interlocutory appeal of class certification in multi-district litigation regarding a data security incident. This is the second time the Fourth Circuit will hear the interlocutory appeal. In August 2023 the appellate court vacated class certification and ruled that the district court erred in not considering the applicability of a waiver at the certification stage.
Yet just last month, the district court once again certified the damage classes. If the district court’s ruling is allowed to stand, the recertification order would have enormous implications for class litigation, multidistrict litigation, and class-action waivers.
Partner Matt Hellman said, “We are pleased the Fourth Circuit has again granted review. We believe the recertification order should be vacated, just as the last one was.”
In addition to Matt and Partner Lindsay Harrison, the Jenner & Block team includes Partners Elizabeth Deutsch and Michelle Kallen and Associates Leslie Bruce, Mary Marshall.
Related Capabilities
Related Locations
© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.
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