O’Melveny Worldwide

Julia Schiller helps clients navigate complex antitrust issues, drawing on her deep and varied experience in both the government and in private practice to advise clients on merger reviews, civil conduct investigations, and antitrust litigation.

Julia rejoined O’Melveny from the Antitrust Division of the US Department of Justice, where she served as Counsel to the Assistant Attorney General. In that role, Julia provided oversight across a broad range of civil enforcement matters. Notable examples include Bayer’s US$66 billion acquisition of Monsanto, in which the Division obtained a comprehensive US$9 billion divestiture, and the Division’s successful challenge to the merger of Novelis and Aleris, which was its first use of arbitration to resolve a merger challenge. In addition, she played a key role in advancing significant new or updated policies at the Division, including those regarding merger remedies, alternative dispute resolution, and the timing of the Division’s merger review process.

At O’Melveny, Julia has guided numerous clients’ transactions through the antitrust agencies’ review process and represents businesses in government investigations arising from suspected violations of the antitrust laws.

Julia also provides strategic advice and practical solutions on competition issues. She counsels clients on antitrust enforcement in labor markets, compliance with Section 8 of the Clayton Act, information sharing, collaborations among competitors. With respect to mergers and acquisitions, Julia advises clients on allocating antitrust risk in transaction agreements and obligations under the Hart-Scott-Rodino Act. She also designs antitrust compliance programs.

Julia has litigated antitrust matters in both the government and private practice. On behalf of the United States, she served as trial counsel in the Antitrust Division’s successful challenge to the merger of Novelis and Aleris. In addition, she has successfully defended companies in class action litigation involving claims of price fixing.

Read More
  • Represented Penguin Random House in DOJ’s challenge of its proposed acquisition of Simon & Schuster
  • Representing public company in DOJ investigation relating to alleged interlocking directorate and potential exchange of competitively sensitive information. 
  • Obtained DOJ clearance for Semtech in its acquisition of Sierra Wireless.
  • Represented technology company in non-public DOJ investigation relating to alleged agreement not to hire competitors’ employees.
  • Obtained FTC clearance for Bass Pro in its US$4 billion acquisition of outdoor sporting goods retailer Cabela’s.
  • Obtained DOJ clearance on behalf of Dealertrack Technologies Inc. for its acquisition by Cox Automotive.
  • Represented Asiana Airlines in In re Air Cargo Shipping Servs. Antitrust Litig., 06-MD-1775 (E.D.N.Y.), involving claims of price fixing.
  • Obtained FTC clearance for Regis Corporation for its sale of Hair Club to Aderans Co. and Bosley, Inc.
  • Obtained DOJ clearance on behalf of Norsk Hydro for its joint venture with Orkla ASA.
  • Represented T-Mobile USA, Inc. and Deutsche Telekom AG in United States v. AT&T Inc., No. 11-01560 (D.D.C.) in connection with the proposed sale of T-Mobile to AT&T.


Bar Admissions

  • District of Columbia
  • New Jersey
  • New York


  • New York University, J.D., 2007: Recipient, Law and Economics Prize; Robert McKay Scholar; Articles Editor, New York University Annual Survey of American Law
  • Princeton University, A.B., Economics, 2003: magna cum laude

Honors & Awards

  • Winner, Concurrences Antitrust Writing Awards: Business Articles, Concerted Practices (2024)
  • Recommended by The Legal 500 US for Merger Control (2022-2024)
  • Recommended by The Legal 500 US for Civil Litigation/Class Actions: Defense (2022)

Professional Activities


  • “What California Can Teach Us About a World Without Non-Competes,” Antitrust Source, co-author with Anna Pletcher and Mike Rosenblatt (December 2023)
  • “International Comity and the Enforcement of US Antitrust Law: Beyond In re Vitamin C,” ABA Antitrust Magazine, co-author with Benjamin Bradshaw and Remi Moncel (2017)
  • “Foreign Sovereignty and US Antitrust Enforcement: Is “The State Made Me Do It” a Viable Defense?” ABA Antitrust Magazine, co-author with Benjamin Bradshaw and Ramesh Nagarajan (Summer 2012)
  • “Towards Convergence: The Volume of ‘Affected’ Commerce Under the US Sentencing Guidelines and ‘Impact’ Analysis Under the Clayton Act,” George Mason Law Review, co-author (Summer 2011) 



  • ABA Antitrust Section, Unilateral Conduct Committee: “Breaking News: Amazon and the FTC” (October 2023)
  • USC Gould/LACBA 40th Annual Institute for Corporate Counsel, “Antitrust Considerations in Labor Markets” (December 2021)
  • OECD Global Blockchain Policy Forum, “Blockchain and Competition Policy: The Agencies’ Perspective” (November 2020)
  • W@ B3 Initiative, “Lessons Learned from DOJ’s Historic Arbitration in the Novelis/Aleris Merger” (September 2020)
  • Practicing Law Institute, “Developments in Antitrust Law & Regulation 2019” (April 2019)
  • Georgetown Law Global Antitrust Enforcement Symposium, “Merger Enforcement” (September 2018)

Corporate & Government Experience

  • Counsel to the Assistant Attorney General, US Department of Justice, Antitrust Division
  • Research Assistant, President’s Council of Economic Advisers