Katrina Robson


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Katrina M. Robson is a globally recognized antitrust trial lawyer, with experience trying merger, single-firm conduct and restraint of trade cases. Her advocacy has made material differences in the business of some of the country’s most recognized companies. She defended AT&T and Time Warner’s $100 billion telecommunications-media merger against a challenge by the Department of Justice in the “antitrust trial of the century”, one of only three trial attorneys representing both clients; won a rare rule-of-reason jury verdict for US Airways in its antitrust action against Sabre, a technology-based global distribution services company; and obtained clearance for Schwab’s $26 billion acquisition of TD Ameritrade, US Airways’ $11 billion merger with American Airlines, and General Mill’s acquisition of organics icon Annie’s.

Katrina has represented Fortune 500 companies in dozens of proceedings ranging from agency investigations to private and government litigation. She also counsels clients on a variety issues, including monopolization, vertical restraints and integration, merger advocacy and clearance, general antitrust compliance, and global litigation strategy. Her expertise has been recognized by leading publications including Legal 500 US (for both antitrust and general commercial disputes) and Global Competition Review (on its international list of “Women in Antitrust”).


Honors & Awards

  • Ranked by Chambers USA for Antitrust: Litigation Specialists (2022)
  • Named to the “Top 250 Women in Litigation” list and recognized as a “Litigation Star” in Competition/Antitrust by Benchmark Litigation (2022)
  • Named to the "500 Leading Litigators in America" list for Antitrust Litigation by Lawdragon (2022)
  • Profiled in Women@Competition’s “40 in their 40s, Notable Women Competition Professionals (Americas)”
  • Named a Next Generation Partner and recognized for Antitrust Law (2017-2020), Merger Control (2019-2022), Civil Litigation/Class Actions: Defense (2021-2022) and General Commercial Disputes (2018) by The Legal 500 US
  • Featured in Global Competition Review’s “Women in Antitrust 2016,” recognizing the 150 leading private practitioners, in-house counsel, enforcers, economics, and academics from around the world


Bar Admissions

  • District of Columbia
  • California


  • Harvard University, J.D.: Executive Editor, Journal of Law and Public Policy; President, Board of Student Advisers
  • University of California at Santa Barbara, M.A., Education
  • University of California at Santa Barbara, B.A., English: Phi Beta Kappa

Professional Activities

Professional Leadership

  • American Bar Association, Antitrust Section, Vice-Chair, Trial Practice Committee
  • Competition Editorial Advisory Board, Law360
  • 2016 Consumer Protection Law Developments (Editorial Board)

Speaking Engagements & Articles

  • “The Pandemic’s Impact on Interim Operating Covenants: Lessons From The Now-Resolved Sycamore - L Brands Dispute,” The M&A Journal (August 1, 2020) (co-author)
  • “How Do You Put the Bricks Together: Evidence that Makes a Difference at Merger Trials” ABA Antitrust Podcast (October 2019)
  • “Full Compensation for Injured Parties: Where Do We Stand More than Four Years after the Adoption of the Antitrust Damages Directive?” GCR 11th Annual Brussels Conference (July 2019)
  • “MFNs in Litigation,” ABA Fall Forum (November 2017)
  • “Big Stakes Antitrust Trials,” 27th Annual Golden State Antitrust Institute (August 2017)
  • 65th ABA Antitrust Spring Meeting Mock Trial (March 2017)
  • “FTC Enforcement Actions Address False “All Natural” Claims,” ABA Antitrust Section Newsletter (December 2016) (co-author)
  • “Antitrust Economic Workshop,” Fordham International Antitrust Law and Policy Conference (2016)
  • “Nuts & Bolts: Reacting to a Potential Challenge,” ABA Antitrust Section Roundtable (January 2015)
  • “Antitrust Discovery Handbook,” ABA Antitrust Section (2013) (contributor)
  • “The New Landscape of Children’s Online Privacy,” Corporate Counsel (August 2013) (co-author)
  • “FTC v. Actavis: Reconciling Conflicts in Rule of Reason,” Law360 (July 2, 2013) (co-author)
  • “The Law of Loyalty Discounts: Two and a Half Theories,” Corporate Counsel (June 21, 2013) (co-author)
  • “The Impact of Wal-Mart v. Dukes on Antitrust Class Action Defense,” ABA Antitrust Business Torts & Civil RICO Committee (August 2011) (co-author)
  • “Assessing the Reasonableness of the Rule of Reason: The World after Leegin,” International Antitrust Law & Policy: Fordham Competition Law 2009 (co-author)
  • Obtained clearance for Schwab’s acquisition of TD Ameritrade.
  • Won arbitration for major corporate conglomerate involving a multi-billion contract.
  • Defended AT&T and Time Warner against DOJ’s challenge to US$100 billion merger.
  • Obtained clearance of US Airways/American Airlines merger after litigation with DOJ.
  • Obtained clearance for General Mills’ acquisition of Annie’s.


In the News

Associated Press: With Court Win, Pennsylvania Schools Want Plan, Down Payment

March 1, 2023

Reuters: How O’Melveny Upended Public Education Funding in Pennsylvania

March 1, 2023

WGAL-TV (NBC Lancaster, PA): WGAL 8 In Focus: School Funding

February 28, 2023

Law360: How Legal Team Schooled Pa. Officials On Education Funding

February 24, 2023

The Philadelphia Inquirer: How Will Pa. Fix Its School Funding? New Jersey’s ‘Abbott’ Rulings Offer Lessons

February 13, 2023

Bloomberg Law: Wake Up Call: Lawyers, Law Firms February 2023

February 13, 2023

The American Lawyer: An Embarrassment of Litigator of the Week Runners-Up and Shout Out Riches

February 10, 2023

Pittsburgh Post-Gazette: School Leaders Cautiously Optimistic About Landmark Pa. School Funding Ruling

February 9, 2023

WHP-TV (CBS Harrisburg, PA): Court Rules School Funding Isn’t Fair in Pennsylvania. What Happens Now?

February 8, 2023

WENY News: State Court Sides with Petitioners in Fair Funding Trial

February 8, 2023

The Times Herald: PA Court’s School Funding Decision Hailed by Advocates

February 8, 2023

The Philadelphia Inquirer: Landmark Pa. School Funding Case Decided: The State’s System is Unconstitutional

February 7, 2023

Law360: NFL Asks To Keep Antitrust Expert In Sunday Ticket Suit

December 19, 2022

The Philadelphia Inquirer: PA School Funding is “Inadequate,” “Inequitable,” and “Illogical,” Court Hears As Landmark Trial Closes

July 26, 2022

Associated Press: 4-Month Trial in Lawsuit Over Public School Funding Wraps

March 10, 2022

The Philadelphia Inquirer: ‘Catastrophic failures’ of Pa. school funding mean students are disadvantaged from the start, plaintiffs argue in landmark trial’s closing

March 10, 2022

Law360: Music Rights, Radio Station Groups Settle Licensing Fee Row

January 10, 2022

Pennsylvania Capital-Star: Pa. School Funding Trial Resumes in Commonwealth Court. Here’s What to Know

January 5, 2022

WHYY Radio - NPR/PBS Philadelphia: Pa. School Funding Trial Kicks Off With Competing Visions of ‘Thorough and Efficient’

November 12, 2021

The Philadelphia Inquirer: Pa. lawmakers have neglected their duty to quality education across the state | Opinion

November 12, 2021

Courthouse News Service: Trial Opens in Pennsylvania Over School Funding Disparities

November 12, 2021

Pennsylvania Capital Star: Lawsuit Over Pa. School Funding Goes To Trial, Witness Testimony Begins Next Week

November 12, 2021

Law360: DirecTV Hands Off Bars' 'Sunday Ticket' Claims To Arbitration

April 22, 2021

Law.com: Miami Cryptocurrency Antitrust Case Could Provide Blueprint for Other Litigation

April 6, 2021

Alerts and Publications

Complexities and Enforcement of Whole-of-Government Competition Policy for Financial Services Companies

March 1, 2023

Antitrust Enforcement: A Vigorous Expansion of Competition Law

February 13, 2023

DOJ Withdraws Longstanding Policy Statements on Information Sharing and Eliminates Safe Harbors

February 7, 2023

Insights 2023

January 31, 2023

FTC Proposes New Rule That Would Ban Non-Compete Agreements

January 10, 2023

Making History: Six Strategic Trials in a Blockbuster Year of Antitrust Litigation

December 13, 2022

Eleventh Circuit Holds That a Franchisor and Its Franchisees May Violate Sherman Act by Entering Into No-Hire Agreements

September 12, 2022

DOJ Breathes New Life into Section 2 Criminal Enforcement

March 8, 2022

FTC Announces New 2022 HSR Reporting Thresholds and Renews Call to Congress for Additional Funding

January 25, 2022

Prompted by Sweeping Executive Order on Competition, New Leadership at US Antitrust Agencies to Launch Review of Merger Guidelines; Similar Initiatives in Europe and China May Signal Greater Convergence in Enforcement Across Jurisdictions

July 26, 2021

Unanimous Supreme Court Affirms Injunction Barring NCAA Rules that Limit Education-Related Compensation to Student Athletes

June 30, 2021

Supreme Court Holds That FTC Cannot Sue for Monetary Relief: AMG Capital Management v. FTC

April 26, 2021

European Commission Extends Reach Over Non-Reportable Transactions

April 6, 2021

Press Releases