FacultyFaculty/Author Profile
Hannah  Chanoine

Hannah Chanoine

O'Melveny & Myers LLP

New York, NY, USA

Hannah Chanoine’s practice focuses on defending and advising consumer packaged goods (“CPG”) companies facing high­stakes litigation with nationwide impact in the trial and appellate courts. Hannah has represented leading manufacturers of Greek yogurt, natural household cleaners, pet food, kombucha, baking products, probiotic baby food, and juice beverages against plaintiffs raising nationwide false advertising class action claims.

Hannah also counsels CPG clients on strategies for mitigating litigation risk during product and label development. Hannah is a member of the adjunct faculty at Columbia Law School, where she co­teaches a course on U.S. Food Law and Policy.

Hannah has served as legal strategy counsel for a Fortune 200 consumer products company in 15 jury trials tried to verdict or mistrial. Hannah has worked with clients to develop legal strategies in a broad range of cases, including individual and consolidated personal­injury actions; consumer­fraud class actions seeking billions of dollars in compensatory and punitive damages; and medical­monitoring class actions seeking comprehensive injunctive relief. Hannah also has an active appellate practice, having been the primary author of appellate briefs in state and federal courts nationwide, including the US Supreme Court and state supreme courts, and having argued multiple times before the Second Circuit Court of Appeals.

Hannah also maintains an active pro bono practice. She has worked closely with the ACLU and other civil rights organizations on LGBT rights, including: filing a lawsuit in Wisconsin to vindicate the rights of more than 500 same­ sex couples that had married following a federal court ruling striking down that state’s marriage ban, but where the state refused to recognize the marriages, successfully persuading the state to change their position; filing amicus briefs in two “refusal of service” cases in the Colorado and New York appellate courts, advocating for robust enforcement of those states’ anti­discrimination laws on behalf of LGBT couples who had been denied services because of their orientation; and filing amicus briefs in the US Supreme Court and the Eighth Circuit cases addressing marriage equality. In addition, Hannah recently served a three­year term appointment to the Second Circuit Court of Appeals' Pro Bono Panel.

After clerking for the Hon. Sonia Sotomayor on the Second Circuit Court of Appeals, Hannah served as a trial attorney in the Department of Justice, Civil Division (Federal Programs Branch) through the Attorney General's Honor's Program. During her tenure there, she had lead responsibility for defending a variety of federal agencies in federal and state courts nationwide, including the Treasury Department's Office of Foreign Assets Control and the State Department's Foreign Service. Hannah also spent 6 years in the appellate practice of another national law firm. Hannah received her JD from Columbia University School of Law, where she was twice named a James Kent Scholar for outstanding academic achievement.

Hannah is a member of the Federal Bar Council's Second Circuit Courts Committee and Inn of Court. In 2012, Hannah co­chaired the Federal Bar Council's eleventh annual Bench & Bar Fall Retreat. For every year since 2011, Super Lawyers has named Hannah to its New York Metro "Rising Stars" list.


Bar Admissions

  • New York
  • Massachusetts

Court Admissions

  • US Supreme Court
  • US District Court for the Southern, Eastern, and Northern Districts of New York
  • US Court of Appeals for the First, Second, and Eleventh Circuits United States Court of Federal Claims


  • Columbia Law School, JD, 2004; Winner: 2004 Columbia Law Review Publishable Notes Competition, James Kent Scholar (2002­2003 and 2003­2004)
  • Wellesley College, BA, magna cum laude, 1998; Economics, Phi Beta Kappa

Professional Activities


  • Honorable Sonia Sotomayor, US Court of Appeals, Second Circuit

Faculty Member

  • Columbia University School of Law, Lecturer­in­law, US Food Law & Policy


  • Michigan State University: Food Law Current Issues Conference, “Food Law Litigation Landscape: Trends and Emerging Legal Risks” 12­14 July 2016


  • WeiserMazars Food and Beverage Industry CFO Bootcamp “Investing in Food & Beverage Companies” 15 June 2016
  • CLE International Food Law Conference, “Trans Fat: Not ‘Generally Recognized as Safe’” 17­18 March 2016
  • FDLI Food Advertising and Litigation Conference, “Insights into the Food Court and Key Cases” 24 September 2015


  • “Hain Celestial ‘Natural’ Case Could Set Precedent Favorable To Industry,” Pharma & MedTech Business Intelligence’s, The Rose Report, (16 April 2015)
  • “Non­Capital Stay Applications In The United States Supreme Court: A Procedural Primer,” Certworthy, (2010)
  • “Clarifying the Joint Action Test for Media Actors When Law Enforcement Violates the Fourth Amendment,” 104 Columbia Law Review 1356, (2004)


  • New York State Bar Association: Food Law Committee (Food, Drug, and Cosmetic Law Section)
  • California State Bar Association: Food Law Committee (Litigation Section)
  • Federal Bar Council: Second Circuit Courts Committee, Inn of Court


  • Federal Bar Council Foundation

Areas of Focus


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