Louis A.Chaiten


Cleveland + 1.216.586.7244

Louis Chaiten's practice focuses on class action defense, appellate matters, and financial institutions litigation. He has successfully defended scores of class actions and other high-stakes matters collectively seeking hundreds of billions of dollars in alleged damages. He has argued before the U.S. Supreme Court and numerous federal and state trial and appellate courts.

Recent representative matters include: defeating class certification in a multibillion dollar putative class action brought by investors in mortgage-backed securities; successfully defending an international manufacturer in multijurisdictional, multibillion dollar class action litigation without any class being certified; successfully defending a financial services company and accounting firm in a $900 million investor class action; and obtaining dismissal of claims against multiple financial institutions in litigation seeking hundreds of millions of dollars over their securitization activities. Louis also commits substantial time to pro bono work, including winning an appeal on behalf of an Ohio man wrongfully convicted of murder, leading to the man's release after more than a decade in prison.

Louis previously clerked on the U.S. Supreme Court (for Justice Antonin Scalia) and the U.S. Court of Appeals for the Sixth Circuit (for Judge Jeffrey Sutton). He also served in the Office of Legal Counsel at the U.S. Department of Justice, which is responsible for advising the president, the attorney general, and other executive branch officials on complex issues of constitutional, statutory, and international law. Louis serves on the board of directors of The City Club of Cleveland, one of the nation's oldest non-partisan free-speech forums.


  • U.S. Bank defeats class certification in putative class action alleging billions in class-wide losses in connection with residential mortgage backed securitiesJones Day represented U.S. Bank N.A. in a putative class action seeking billions of dollars in alleged class-wide losses in connection with investments in notes issued by 25 residential mortgage backed securities trusts for which U.S. Bank served as trustee.
  • Goodman defeats class certification in putative consumer class actions alleging sale of failure-prone air conditioner componentsJones Day represents Goodman Global, Inc. and its affiliates, the manufacturers of central air conditioning and heating systems sold under the Goodman, Amana, and Daikin brands, in a series of putative consumer class actions.
  • CBIZ and Mayer Hoffman McCann obtain Ninth Circuit affirmance of dismissal of $900 million lawsuitOn February 23, 2015, the United States Court of Appeals for the Ninth Circuit ruled in favor of Jones Day clients CBIZ, Inc. and Mayer Hoffman McCann P.C. in a case filed on behalf of a putative class of investors alleging $900 million in losses from the collapse of Mortgages Ltd., a commercial real estate lender.
  • U.S. Bank prevails on appeal and obtains settlement in putative class action alleging tens of billions in class-wide losses in connection with residential mortgage backed securitiesJones Day represented U.S. Bank National Association in putative class actions filed in New York state court seeking tens of billions of dollars in alleged class-wide losses in connection with investments in certificates and notes issued by over 800 residential mortgage backed securities trusts for which U.S. Bank served as trustee.
  • Manufacturer of bird food defends against putative class actionJones Day defended a manufacturer of bird food in a consolidated putative class action lawsuit alleging that the company sold bird food products that should not have been sold and seeking a refund of funds expended by consumers.
  • Bayer prevails in challenge to design, results, and implementation of clinical trialsJones Day represented Bayer HealthCare LLC in obtaining a complete victory in a challenge to Bayer's decision to discontinue further development of a recombinant hemophilia product.
  • Macy's prevails at trial against J.C. Penney for tortiously interfering with Macy's contract with Martha Stewart Living OmnimediaOn June 16, 2014, the Supreme Court of the State of New York granted Jones Day client Macy's, Inc. a complete victory, after trial, against J.C. Penney Corporation, Inc. for tortious interference with a license agreement between a Macy’s affiliate and Martha Stewart Living Omnimedia, Inc. ("MSLO").
  • Cliffs Natural Resources wins Eighth Circuit appeal in dispute concerning post-termination duties under reclamation-services agreementOn August 17, 2010, the United States Court of Appeals for the Eighth Circuit ruled in favor of Jones Day client Cliffs Natural Resources Inc., an international iron ore supplier, in an appeal involving litigation brought by a reclamation-services provider.
  • Major appliance manufacturer defends putative nationwide class action alleging design defects in dryersJones Day is serving as lead counsel in defense of a putative nationwide class action alleging that certain dryers manufactured by a major appliance manufacturer include a design defect.
  • Financial institutions win Sixth Circuit appeal dismissing novel public nuisance suit filed by City of ClevelandOn July 27, 2010, the United States Court of Appeals for the Sixth Circuit ruled in favor of Jones Day clients Morgan Stanley and RBS Securities, along with 20 other financial institutions, in an appeal involving a novel, high-profile public nuisance claim filed by the City of Cleveland.
  • Diebold securities litigation dismissal upheld by Sixth CircuitJones Day represented Diebold and a group of its current and former officers and directors, which had been sued in a shareholder class action (dismissed and affirmed on appeal) under federal securities law for allegedly making false statements about the status and prospects of Diebold's businesses.
  • Ohio State Bar Association succeeds in returning clarity to Ohio's Corporate Director Advancement StatuteThe Ohio State Bar Association, represented by Jones Day as an amicus curiae, successfully petitioned the Supreme Court of Ohio to review, and then reverse, a decision from the Eleventh District that threatened directors’ right to advancement.
  • KeyCorp defends class actions alleging securities fraud and ERISA violations arising out of investments related to Bernard MadoffJones Day defended KeyCorp and an affiliate that managed a family of funds-of-hedge-funds against class actions arising out of the Bernard Madoff scandal.
  • Timken wins federal district court jury trial on breach of contract claims against Robert Bosch LLCOn May 29, 2009, Jones Day client The Timken Company achieved a complete victory in a jury trial in federal district court in Akron, Ohio, against Robert Bosch LLC, on Timken's breach of contract claims.
  • Zimmer Holdings obtains dismissal of shareholder derivative actionJones Day represented the directors of Zimmer, Inc. in a shareholder derivative action, securing dismissal based on absence of a pre-suit demand upon the board.
  • Ohio Supreme Court strikes down portions of sex offender law as violation of separation of powersJones Day Columbus successfully represented a group of victims' rights organizations and law enforcement personnel as amicus curiae in opposition to Ohio's new sex offender law (Senate Bill 10).
  • Federal appeals court bars a second murder trial of former Ohio death row inmateJoe D'Ambrosio ("D'Ambrosio") was convicted of capital murder, sentenced to death, and ultimately served 20 years in an Ohio prison.
  • Ohio inmate is represented on appeal based on recently discovered forensic evidenceA Jones Day Cleveland team represented an Ohio inmate convicted of murder in 2001, in an appeal before the Eighth District Court of Appeals (Cuyahoga County, Ohio).
  • Speaking Engagements

    • June 11, 2019
      Recent Trends in Consumer-Fraud Class Actions
    • February 5, 2018
      Emerging Trends in Consumer Fraud Class-Action Arbitration
    • November 29, 2017
      2017 Supreme Court Review
    • June 15, 2017
      Legal Implications of Justice Gorsuch's Confirmation to the U.S. Supreme Court
    • April 4, 2017
      Emerging Trends in Consumer Fraud Class Action Litigation
    • November 29, 2016
      Supreme Court Review
    • October 26, 2016
      Supreme Court Update: A Look at Significant Cases in the New Term
    • December 1, 2015
      U.S. Supreme Court Review
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