Image: Thomas P. Brown

Thomas P. Brown

Special External Advisor, Corporate


Thomas Brown is a special external advisor for Paul Hastings LLP’s Fintech and Antitrust Groups. Mr. Brown serves as the General Counsel of NYCA, a leading venture capital firm focused on connecting innovative companies to the global financial system.  Mr. Brown is not a Paul Hastings attorney but works with the Firm and its clients on select projects.  Mr. Brown can be reached at (415) 225-1277.

While previously with Paul Hastings, Mr. Brown’s practice was focused primarily on competition law and legal issues affecting the financial services industry. In addition to strategically advising payment systems and financial services clients across a broad spectrum of regulatory issues, he has litigated notable antitrust cases, including class actions, in the financial services industry for more than 15 years.

Prior to his joining Paul Hastings, Mr. Brown had served as Vice President, Senior Counsel at Visa U.S.A. Inc. There he was responsible for managing the aftermath of the settlement in In re Visa Check/MasterMoney Antitrust Litigation, including the dozens of consumer class actions that were filed following the settlement. He was also deeply involved in the company’s transformation from a co-op to a shareholder-owned company.


  • Chambers Band 2, FinTech Legal (2019 & 2020)
  • The Legal 500, Antitrust - Merger Control (2021)
  • The Legal 500, Antitrust - Civil Litigation/Class Actions: Defense (2021)
  • The Legal 500, Leading Lawyer for Media, Technology, and Telecoms - Fintech (2021)


  • University of Chicago Law School, J.D., 1995
  • Columbia University, A.B., 1992


  • Upstart, in obtaining the first ever no action letter from the CFBP regarding the company’s underwriting model and the use of non-traditional signals of credit quality.
  • eBay, in its defeat of a putative class action in which plaintiffs claimed that eBay’s acquisition of PayPal enabled the company to charge supra-competitive fees.
  • Visa U.S.A. Inc., member of the trial team that handled the defense of the then largest civil antitrust class action in U.S. history, In re Visa Check/MasterMoney Antitrust Litigation.

Engagement & Publications

  • Thomas Brown and Dae Ho Lee, "Unfair" Practices in the Financial Services Industry: The New Boss is the same as the Old Boss, 81 Antitrust L. J. 981 (2017)
  • Thomas Brown and Michael Wise, S. Merger Control in the High-Technology Sector, The Merger Control Review 8th (Sep. 2017)
  • Author, PAEs and Antitrust—A Brief Introduction, 79 Antitrust L. J. 395 (2014)
  • Co-Author with Sam Zun, Cascades Computer Innovation, LLC v. RPX Corporation—Can’t We At Least Agree that There’s No Per Se Claim Here? Antitrust Magazine 36 (Summer 2013)
  • Author, Keeping Electronic Money Valuable: The Future of Payments and the Role of Public Authorities (2009)


  • Law Clerk, Honorable Diane P. Wood, U.S. Court of Appeals, Seventh Circuit
  • Admitted to Practice, U.S. Court of Appeals, Seventh and Ninth Circuits; U.S. Supreme Court
  • Professor, Adjunct Professor at Boalt Hall School of Law, University of California at Berkeley, in the Law and Policy of Modern Consumer Payments
  • Editorial Board, ABA’s Antitrust Law Developments (Seventh) and Antitrust Law Journal (Vol. 79-80)
  • Member, American Bar Association, The American Law Institute
  • Member, Working Group for the World Economic Forum Project on Disruptive Innovation in Financial Services

Practice Areas


Internet of Things

Antitrust and Competition


Emerging Growth Companies

Fintech and Payments

Data Privacy and Cybersecurity

ESG & Impact

ESG & Sustainable Finance

Impact Investing




California Bar


The University of Chicago Law School, J.D. 1995

Columbia University, A.B. 1992

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