Amadeus IT Group Antitrust Class Action
Last verified October 23, 2026Source: courtlistener-litigationHow ClaimWatch verifies cases
Still being litigated: the claims below are allegations, not findings, and there is no settlement, claim form or payout yet.
Where this case stands
In litigation
The case has been filed and is being fought in court. There is no settlement, no claim form and no payout yet; many class actions are dismissed or never certified.
Pending in the District Court, N.D. Illinois (No. 1:24-cv-01783).
- March 1, 2024Case filed
What happened
A proposed class action against Amadeus IT Group, S.A., apparently concerning alleged antitrust violations. No further specifics are provided in the caption or docket entry.
Do you qualify?
No settlement exists yet, so there is nothing to file and no class definition to check. If the case settles, the settlement will define exactly who qualifies — watch this case and we'll let you know.
How to file
There is no claim to file yet. If this case reaches a settlement, a claim process will open — usually with an official settlement website and a filing deadline.
Common questions
- Can I file a claim in the Amadeus IT Group Antitrust Class Action case?
- No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed March 1, 2024 in the District Court, N.D. Illinois (No. 1:24-cv-01783).What a class action lawsuit is →
- Who are the attorneys in the Amadeus IT Group Antitrust Class Action?
- For the plaintiffs: David Walchak (Korein Tillery LLC); Julie Catherine Moroney (Robins Kaplan LLP); Ryan William Marth (Crowell & Moring, LLP); Vincent Briganti (Lowey Dannenbergt, P.C.). For Amadeus IT Group, S.A.: Karen M. Lent (Skadden Arps Slate Meagher & Flom LLP); Noah Williams Fitzgerel (Sidley Austin LLP); J. Mark Gidley (White & Case LLP); Sam Auld (Skadden, Arps, Slate, Meagher & Flom LLP). From the public court docket.
Who's involved
Plaintiffs
- Ryan Segal
Defendants
- Hyatt Corporation
- Loews Hotels Holding Corporation
- Starwood Hotels & Resorts Worldwide LLC
- Six Continents Hotels, Inc.
- Accor Management US Inc.
- Hilton Domestic Operating Company Inc.
- Amadeus Hospitality, Inc.
- Omni Hotels Management Corp.
+ 12 more
Counsel for plaintiffs
- David WalchakKorein Tillery LLCRepresents Ryan Segaldwalchak@koreintillery.com · (312) 641-9750
- Julie Catherine MoroneyRobins Kaplan LLPRepresents Ryan Segaljmoroney@robinskaplan.com · (612) 349-0648
- Ryan William MarthCrowell & Moring, LLPRepresents Ryan Segalrmarth@crowell.com · (202) 508-8920
- Vincent BrigantiLowey Dannenbergt, P.C.Represents Ryan Segal2 tracked casesvbriganti@lowey.com · (914) 997-0500
- Nicole VenoLowey Dannenberg, P.C.Represents Ryan Segal4 tracked casesnveno@lowey.com · (914) 997-0500
- Claire Noelle FordeLowey Dannenberg, P.C.Represents Ryan Segal4 tracked casesnforde@lowey.com · (914) 997-0500
- Christian LevisLowey Dannenberg, P.C.Represents Ryan Segal27 tracked cases · $430.1M in disclosed settlementsclevis@lowey.com · (914) 997-0500
- Pamela Ibrahim YaacoubKorein Tillery LLCRepresents Ryan Segalpyaacoub@koreintillery.com · (312) 641-9750
- Geoffrey Holmes KozenRobins Kaplan LlpRepresents Ryan Segal3 tracked casesgkozen@robinskaplan.com · (612) 349-8500
- Steven M BerezneyKorein Tillery LlcRepresents Ryan Segal4 tracked cases · $28.5M in disclosed settlementssberezney@koreintillery.com · (314) 241-4844
Counsel for defendants
- Karen M. LentSkadden Arps Slate Meagher & Flom LLPRepresents Amadeus IT Group, S.A., Amadeus Hospitality, Inc.6 tracked caseskaren.lent@skadden.com · (212) 735-3276
- Noah Williams FitzgerelSidley Austin LLPRepresents Accor Management US Inc.noah.fitzgerel@sidley.com · (202) 736-8502
- J. Mark GidleyWhite & Case LLPRepresents Four Seasons Hotels Limited2 tracked casesmgidley@whitecase.com · (202) 626-3600
- Sam AuldSkadden, Arps, Slate, Meagher & Flom LLPRepresents Amadeus Hospitality, Inc.3 tracked casessam.auld@skadden.com · (212) 735-2044
- Michael LanciSkadden, Arps, Slate, Meagher & Flom LLCRepresents Amadeus Hospitality, Inc.2 tracked casesMichael.Lanci@skadden.com · (212) 735-3423
- Matthew M. MartinoSkadden, Arps, Slate, Meagher & Flom LLPRepresents Amadeus Hospitality, Inc.matthew.martino@skadden.com · (212) 735-3000
- John Mark GidleyWhite & Case LLPRepresents Four Seasons Hotels Limitedmgidley@whitecase.com · (202) 626-3600
- J. Frank HogueWhite & Case LLPRepresents Four Seasons Hotels Limitedfhogue@whitecase.com · (202) 626-3600
- Christopher M CurranWhite & Case LlpRepresents Four Seasons Hotels Limitedccurran@whitecase.com · (202) 626-3643
- Caroline BuyakKing & Spalding LLPRepresents Six Continents Hotels, Inc.cbuyak@kslaw.com · (404) 572-4600
- Lohr Alexandria BeckKing & Spalding LLPRepresents Six Continents Hotels, Inc.lohr.beck@kslaw.com · (404) 572-3564
- Emily Shoemaker NewtonKing & Spalding LLPRepresents Six Continents Hotels, Inc.enewton@kslaw.com · (404) 572-4600
- Tina Hwa JoeDavis Polk & Wardwell LlpRepresents Hilton Domestic Operating Company Inc.3 tracked casestina.joe@davispolk.com · (212) 450-3541
- David Jarrett ArpDavis Polk & Wardwell LLPRepresents Hilton Domestic Operating Company Inc.3 tracked casesjarrett.arp@davispolk.com · (202) 962-7150
- Sarah AkhtarRepresents The Ritz-Carlton Hotel Company, LLC, Marriott International, Inc., Starwood Hotels & Resorts Worldwide LLCsakhtar@gibsondunn.com · (202) 887-3575
- Paul BrachmanPaul, Weiss, Rifkind, Wharton & Garrison LLPRepresents Loews Hotels Holding Corporation4 tracked casespbrachman@paulweiss.com · (202) 223-7300
- Matthew RobinsonPaul, Weiss, Rifkind, Wharton & Garrison LLPRepresents Loews Hotels Holding Corporation3 tracked casesmrobinson@paulweiss.com · (212) 373-3000
- Katherine B ForrestPaul, Weiss, Rifkind, Wharton & Garrison LLPRepresents Loews Hotels Holding Corporation5 tracked casesKForrest@paulweiss.com · (212) 373-3000
- Zachary Thomas FardonKing & SpaldingRepresents Six Continents Hotels, Inc.3 tracked caseszfardon@kslaw.com · (312) 995-6333
- Jeffrey S. CashdanKing & SpaldingRepresents Six Continents Hotels, Inc.2 tracked casesjcashdan@kslaw.com · (404) 572-4600
- Sandra Nicole BoothSidley Austin LLPRepresents Accor Management US Inc.3 tracked casesnicole.booth@sidley.com · (202) 736-8346
- Chad Samuel HummelFaegre Drinker Biddle & Reath LLPRepresents Accor Management US Inc.chad.hummel@faegredrinker.com · (818) 800-5101
- Benjamin M. MundelSidley Austin LLPRepresents Accor Management US Inc.2 tracked casesbmundel@sidley.com · (202) 736-8157
- Amy Pesapane LallySidley Austin LLPRepresents Accor Management US Inc.12 tracked cases · $11.5M in disclosed settlements defendedalally@sidley.com · (310) 595-9500
- Carrie C. MahanSidley AustinRepresents Accor Management US Inc.4 tracked casesCarrie.mahan@sidley.com · (202) 669-9179
- Tammy L. AdkinsMcGuireWoods LLPRepresents Hilton Domestic Operating Company Inc.4 tracked casestadkins@mcguirewoods.com · (312) 849-8100
- Mari GraceDavis Polk & Wardwell LLPRepresents Hilton Domestic Operating Company Inc.3 tracked casesmari.byrne@davispolk.com · (202) 962-7000
- Neal Alan PotischmanDavis Polk & Wardwell LLPRepresents Hilton Domestic Operating Company Inc.5 tracked cases · $100M in disclosed settlements defendedneal.potischman@davispolk.com · (650) 752-2000
- Amy Lynn Van GelderSkadden Arps Slate Meagher & Flom, LLP CHRepresents Amadeus Hospitality, Inc.amy.vangelder@skadden.com · (312) 407-0700
- Eliot Fielding TurnerNorton Rose Fulbright US LLPRepresents Omni Hotels Management Corp.4 tracked caseseliot.turner@nortonrosefulbright.com · (713) 651-5113
- Edward M CasmereNorton Rose Fulbright US LLPRepresents Omni Hotels Management Corp.4 tracked casesed.casmere@nortonrosefulbright.com · (312) 964-7800
- Andrianna Deanne KastanekJenner & Block LLPRepresents Hyatt Hotels Corporation, Hyatt Corporation4 tracked casesAKastanek@jenner.com · (312) 840-7285
- Lindsay HarrisonJenner & Block LLPRepresents Hyatt Hotels Corporation, Hyatt Corporation7 tracked caseslharrison@jenner.com · (202) 639-6865
- Douglas E. LitvackJenner & Block LLPRepresents Hyatt Hotels Corporation, Hyatt Corporation6 tracked casesDLitvack@jenner.com · (202) 637-6357
- Melanie L. KatsurGibson, Dunn & Crutcher LLPRepresents The Ritz-Carlton Hotel Company, LLC, Marriott International, Inc., Starwood Hotels & Resorts Worldwide LLCmkatsur@gibsondunn.com · (202) 887-3636
- Matthew John KramerCheng Cohen LLCRepresents The Ritz-Carlton Hotel Company, LLC, Marriott International, Inc., Starwood Hotels & Resorts Worldwide LLCmatthew.kramer@chengcohen.com · (312) 243-1715
- Kristen C. LimarziGibson, Dunn & Crutcher LLPRepresents The Ritz-Carlton Hotel Company, LLC, Marriott International, Inc., Starwood Hotels & Resorts Worldwide LLCKLimarzi@gibsondunn.com · (202) 887-3518
- Jeffrey Michael HansenJackson Lewis P.C.Represents The Ritz-Carlton Hotel Company, LLC, Marriott International, Inc., Starwood Hotels & Resorts Worldwide LLCjeffrey.hansen@jacksonlewis.com · (312) 803-2516
Other cases these firms appear in
- Clear Spring Life and Annuity Company Insurance Class Action · Korein Tillery
- National College Athletic Association Antitrust Class Action · Korein Tillery
- Hanna Holdings Antitrust Class Action · Korein Tillery
- HomeServices of America Antitrust Class Action · Korein Tillery
- Green v. Vail Resorts Antitrust Class Action · Robins Kaplan LLP
From the public court docket, contact details as filed; not an endorsement.
Guides:What is a class action lawsuit?How class membership worksYour options as a class member
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