Olivia Adendorff is a litigation partner in the Dallas and Washington, D.C., offices of Kirkland & Ellis LLP. She has broad experience in consumer protection, false advertising and antitrust matters, with particular experience in FTC investigations, private antitrust litigation and class actions. She defends corporations in a wide variety of industries, including Fortune 500 pharmaceutical and technology companies.

Olivia has acted as trial and appellate counsel in both individual and class action suits involving claims in various practice areas, including ESG, antitrust, consumer protection statutes, state and federal False Claims Acts, and complex commercial disputes. In addition, Olivia also advises companies on consumer protection and antitrust compliance concerns.


Thought Leadership


“New Implications of the FTC’s Health Breach Notification Rule,” Dallas Bar AssociationHeadnotes, 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


Litigation – Antitrust, Best Lawyers®, 2023–2024

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

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

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

Cybersecurity & Privacy Editorial Board, Law360, 2021

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

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


Admissions & Qualifications

  • 2009Texas
  • 2020District of Columbia


  • 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


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