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

  • Named to the “Top 250 Women in Litigation” list and recognized as a “Litigation Star” in Competition/Antitrust by Benchmark Litigation (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 (2019-2021), Civil Litigation/Class Actions: Defense (2021) 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

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

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

The National Law Journal: General Litigation Finalist: O’Melveny & Myers

May 26, 2020

Law360: Crypto Co. Slams Dismissal Bids In Bitcoin Cash Antitrust Suit

April 27, 2020

Global Competition Review: The Tipline for 27 January 2020

January 27, 2020

Competition Policy International: US: First Antitrust Trial involving Cryptocurrency Starts Next Week

January 23, 2020

Press Releases

Alerts and Publications

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

Senator Klobuchar Unveils Broad New Proposed Antitrust Legislation

February 8, 2021

FTC Adjusts New 2021 HSR Reporting Thresholds Downward

February 3, 2021

EU Commission Publishes Text of EU-China Comprehensive Agreement on Investment

January 27, 2021

The Department of Justice Antitrust Division Brings First-Ever Criminal No-Poach Case

January 22, 2021

Germany Strengthens Antitrust Enforcement Powers to Rein in Big Tech

January 19, 2021

China Expands National Security Review of Foreign Investments

January 12, 2021

European Commission Plan to Reform Europe’s Digital Space - Part 2 - Draft Digital Services Act

December 23, 2020

European Commission Plan to Reform Europe’s Digital Space - Part 1 - Draft Digital Markets Act

December 21, 2020

The Department of Justice Antitrust Division Brings First-Ever Criminal Labor Market Collusion Case

December 17, 2020

New Guidelines Clarify When Antitrust Division Will Consider Using Arbitration

December 1, 2020

The UK National Security and Investment Bill: Strengthening scrutiny of investment in the UK and introducing the UK’s first mandatory notification regime

November 20, 2020

China Publishes “Unreliable Entities” Rules Targeting Foreign Enterprises

September 22, 2020

DOJ Issues Letter Encouraging IEEE to Change Policy on Standard Essential Patents

September 18, 2020

Hong Kong Competition Tribunal Approves First Cartel Settlement

August 13, 2020

M&A Journal: The Pandemic’s Impact on Interim Operating Covenants

August 1, 2020

Congress Reauthorizes ACPERA and Repeals Sunset Provision

July 17, 2020

DOJ’s Prosecution of Generic Drug Companies Continues as it Announces Price-Fixing Charges Against Glenmark Pharmaceuticals, Inc.

July 2, 2020

The UK’s Competition and Markets Authority Targets Big Tech

July 2, 2020

DOJ and FTC Issue New Vertical Merger Guidelines

July 1, 2020

Germany’s Federal Cartel Office Calls for the EU Court of Justice’s Guidance on Important Patent Licensing Issues

June 25, 2020

Germany’s Supreme Court Sides with National Antitrust Enforcer in Facebook Abuse of Dominance Case

June 23, 2020

May Price Gouging Update

June 4, 2020

Updates on Recent US Merger Control Developments - May 2020

May 22, 2020

New Proposed Legislation in California Increases Antitrust Scrutiny in M&A and Other Activities in the Healthcare Industry

May 19, 2020

COVID-19 Antitrust M&A Considerations

May 7, 2020

Collusion in the Healthcare Industry: DOJ Charges Oncology Group for its Participation in a Criminal Antitrust Conspiracy

May 6, 2020

Price Gouging Update—April 2020

April 30, 2020

Gun-Jumping Concerns for Pending Transactions When There Is No Such Thing as “Ordinary Course of Business”

April 27, 2020

The Failing Firm Merger Defense in Times of Economic Turmoil: Past Lessons and the COVID-19 Crisis

April 23, 2020

Antitrust Agencies Watch for Labor Market Collusion in the Healthcare Industry

April 20, 2020

DOJ and FTC on Alert for Anticompetitive Conduct in Labor Markets for COVID-19 Essential Workers

April 15, 2020

Nationwide Shortages Open New Frontiers in Fight Against COVID-19-Related Price Gouging

April 14, 2020

Hong Kong Competition Commission Consults on Proposed Commitments Offered by Online Travel Agents to Remove Parity Clauses from Agreements with Accommodation Providers

April 9, 2020

China Adopts Antitrust Enforcement Policy to Fight COVID-19 and Spur Economic Recovery

April 8, 2020

Antitrust Implications of the President’s Invocation of the Defense Production Act

April 2, 2020

Department of Health and Human Services Triggers Price Gouging and Hoarding Provisions of Defense Production Act

April 1, 2020

Hong Kong Competition Commission Issues Statement on the Application of the Competition Rules to Cooperation Agreements Between Companies Responding to the COVID-19 Pandemic

March 30, 2020

Competitor Collaborations and Communications in Time of Crisis: Practical Guidance

March 26, 2020

Antitrust Agencies Provide Guidance for Competitor Collaborations in Healthcare Sector as COVID-19 Outbreak Deepens

March 25, 2020

European Antitrust in the Time of COVID-19

March 25, 2020

Antitrust Enforcers to be Active Monitoring Marketplace Activity Related to COVID-19

March 20, 2020