Overview

Olivia Adendorff is a Chambers-ranked litigation partner in the Dallas and Washington, D.C., offices of Kirkland & Ellis LLP. She has broad experience in consumer protection, data privacy, false advertising, ESG, and antitrust matters, with particular experience in FTC and state AG investigations and consumer class actions. She co-leads the Firm’s privacy litigation and consumer protection practice groups and defends corporations in a wide variety of industries, with a particular focus on technology companies.

Olivia has acted as trial and appellate counsel in class action suits and government investigations with billions of dollars at stake for clients in a wide variety of industries including EdTech, travel, health, real estate and technology. Her recent matters include representing GoodRx in the first-of-its-kind Health Breach Notification Rule data privacy settlement with the FTC related to digital marketing practices; representing Amway affiliates in a landmark MLM FTC settlement regarding earnings claims; representing the country’s largest egg farmer in an antitrust MDL alleging price fixing and representing several leading EdTech provides in various class actions alleging claims under data privacy statutes. She is “Highly Recommended” by the Global Competition Review.

Olivia also advises companies on consumer protection, data privacy and antitrust compliance concerns, including in the context of deal diligence.

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Thought Leadership

Publications

“New Implications of the FTC’s Health Breach Notification Rule,” Dallas Bar Association, Headnotes, May, 2023

“What Cos. Can Expect From FTC’s Green Guides Updates,” Law360, January 11, 2023

“SEC Constitutionality Ruling May Embolden FTC Targets,” Law360, June 8, 2022

“A Watershed Moment? What Comes Next for the FTC in the Wake of AMG,” ABA Antitrust Magazine, August 9, 2021

“The Other Tech-Focused Initiative: The FTC’s Expanding Consumer Protection Efforts Targeting E-Commerce,” Antitrust, August 13, 2020

“Seventh Circuit Sets Up Potential Supreme Court Review of FTC Monetary Relief Authority,” Antitrust, December 12, 2019

“Plaintiffs Face High Class Cert. Bar in Antitrust Cases,” Law360, February 8, 2016

Editor, Antitrust Class Action Handbook

Recognition

Litigation – Antitrust, Best Lawyers®, 2023–2025

“Highly Recommended” in Texas by Global Competition Review 100, 2022–2025

Antitrust Litigation (Texas), Chambers USA, 2025–2026

Antitrust: Civil Litigation/Class Actions: Defense (2020–2021 & 2023–2026), Advertising and Marketing: Litigation (2023–2026), Government – State Attorneys General (2024–2025), Antitrust: Cartel (2020), Antitrust: Merger Control (2020) and General Commercial Disputes (2020), The Legal 500 United States

“40 Under 40,” Global Competition Review, 2024

“Up and Coming” in Chambers USA for Antitrust Litigation, 2023–2024

“40 & Under Hot List,” Benchmark Litigation, 2023–2024

Cybersecurity & Privacy Editorial Board, Law360, 2021

Rising Star, Super Lawyers, 2019

Lawyer “On the Rise,” Texas Lawyer, 2019

“40 Under 40” Business Leaders in Dallas, Dallas Business Journal, 2017

Memberships & Affiliations

Fellow, American Bar Foundation, 2021–present

Board, Holy Trinity Academy

Member, Harvard Club of Dallas

Credentials

Admissions & Qualifications

  • 2009Texas
  • 2020District of Columbia

Courts

  • United States Court of Appeals for the Fifth Circuit
  • United States Court of Appeals for the Sixth Circuit
  • United States Court of Appeals for the Ninth Circuit
  • United States District Court for the Northern District of Illinois
  • United States District Court for the Eastern District of Texas
  • United States District Court for the Southern District of Texas
  • United States District Court for the Northern District of Texas
  • United States District Court for the Western District of Texas

Education

  • Harvard UniversityJ.D.cum laude2009
  • Harvard CollegeA.B.cum laude2006