Overview
Weisiyu counsels clients before the Department of Justice and the Federal Trade Commission regarding anticompetitive practices. She advises clients on compliance with US merger control laws, regulatory review of mergers and acquisitions, government investigations into anticompetitive conduct, and implementation of antitrust best practices.
Weisiyu received her J.D. and LL.M. dual degree from Georgetown University Law Center and her B.A. magna cum laude in Economics & Philosophy from Mount Holyoke College. Weisiyu is a member of the American Bar Association, DC District Court, and DC Bar.
- District of Columbia
- J.D., Georgetown University Law Center, 2018
- LL.M., Georgetown University Law Center, 2018, Securities and Financial Regulation
- B.A., Mount Holyoke College, 2013, magna cum laude
- Harvard University, 2012, (Exchange Scholar, Philosophy)
Areas of Work
Representative Matters
- Counsel to a major social media firm before the Federal Trade Commission regarding anticompetitive practices relating to targeted advertising on social media platforms.
- Counsel to a multinational computer technology corporation before the Federal Trade Commission regarding anticompetitive practices relating to search engines and AdTech.
- Counsel to a leading telecoms trade association in an internal antitrust investigation relating to standard setting.
- Counsel to a multinational corporation before the Department of Justice regarding investigating a proposed transaction, including compliance with the Hart-Scott-Rodino Antitrust Improvements Act.
- Counsel to a multinational telecommunications equipment manufacturer in an EDNY legal proceeding relating to US economic sanctions and export controls issues.
- Advised leading financial institutions and international corporations on US economic sanctions, anti-money laundering (AML), CFIUS, and export controls related issues.
- Conducted internal investigations on behalf of an international aerospace company in connection with alleged Foreign Corrupt Practices Act (FCPA) violations.
- Advised a global cryptocurrency exchange and a leading blockchain & digital asset trade association regarding compliance with US securities and AML regulations.
News & Publications
StepAhead: Antitrust & Competition Insights
Trump 2025 Antitrust Agenda: Targeting Regulatory Barriers
April 18, 2025
StepAhead: Antitrust & Competition Insights
Trump 2.0: Potential Shifts and Key Considerations in US Antitrust Policy
November 19, 2024
StepAhead: Antitrust & Competition Insights
September 23, 2024
By: Michael L. Weiner, Weisiyu Jiang, Martina Scassini
Client Alerts
FTC Non-Competes Ban: Take No Action Yet, But Do Get Ready
April 30, 2024
By: Michael L. Weiner, John J. Kavanagh, Lee Berger, Travis West, Weisiyu Jiang, Andrew Magloughlin