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Vinson & Elkins LLP

Work +1 202 639 6500
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Austin, Beijing, Dallas, Dubai, Hong Kong, Houston and 10 more

William Vigdor

Work +1 202 639 6737
Vinson & Elkins LLP

Work Department



Billy’s primary area of practice is antitrust law. Since joining V&E in 2003, Billy has represented clients before the Federal Trade Commission (FTC), the Department of Justice (DOJ), the Committee on Foreign Investment in the United States (CFIUS), the Commodity Futures Trading Commission (CFTC) and States Attorneys General in a wide range of industries including energy (E&P, midstream , generation, transportation, storage and marketing), petrochemicals, health care, technology (computers, information services, semiconductors, radio frequency identification, aerospace, telecommunications equipment), machine tools, auto parts, hydrocarbon trading, retailing, food manufacturing, industrial liquids, pharmaceuticals, paper products, and others. Billy has also assisted many clients appearing before competition authorities around the world, including the European Commission and authorities in Austria, Brazil, Canada, China, Colombia, Ireland, Italy, Mexico, Norway, South Korea, Switzerland, Taiwan, Turkey, Ukraine and others.

Billy’s merger work has involved cutting-edge issues involving multi-jurisdictional merger review, and mergers of partially owned companies, joint ventures, master limited partnerships, private equity and hedge funds along with strategic acquisitions. Billy has a successful record in persuading the agencies not to challenge mergers or not to issue second requests.

Billy has represented many clients (both buyers and sellers) before CFIUS, including companies involved in technology, telecommunications, E&P companies, and petrochemicals. Billy has also obtained CFIUS clearance for government-owned clients.

In addition, Billy has been worked with clients in antitrust litigation and agency investigations involving price fixing, monopolization, state action immunity, Noerr Pennington immunity, and distribution issues such as exclusive dealing, tying, and resale price maintenance. Some of the more notable intellectual property antitrust issues in which Billy has been involved include exclusionary payments in patent settlements, Walker Process claims, abuses of standard setting organization rules, and refusals to license intellectual property. Prior to joining V&E, Billy served six years at the FTC, three of which as Deputy Assistant Director. Billy also participated in FTC litigation involving mergers and anticompetitive conduct.


  • Co-Vice Chair: Mergers and Acquisitions Committee, ABA Section of Antitrust, 2001-2005
  • Chair and Vice Chair: Antitrust Committee, Energy Bar Association, 2002-2003


Billy graduated from Emory University, B.A. in 1981, the George Washington University National Law Center, J.D. in 1990, and the University of Iowa, Ph.D. in 1994. Admitted to Connecticut Bar in 1990, District of Columbia Bar in 1991, and New York Bar in 1992.

United States: Antitrust


Within: Cartel

Vinson & Elkins LLP's recent cartel work includes advising Hitachi on its involvement in the DOJ's global criminal investigation into the auto parts industry, and acting for a Chinese chemical company and its US subsidiary regarding its receipt of a grand jury subpoena emerging from a DOJ investigation. The team was recently bolstered by the arrival of Darren Tucker, Hill Wellford and counsel Greg Wells from Morgan, Lewis & Bockius LLP. Other key names include Craig Seebald, Houston-based James Reeder, head of merger investigations William Vigdor and Lindsey Vaala, who was recently promoted to counsel. Named individuals are based in Washington DC unless otherwise stated.

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Civil litigation/class actions: defense

Within: Civil litigation/class actions: defense

Vinson & Elkins LLP's antitrust team is particularly strong in Washington DC, Houston and San Francisco and acts for a client roster spanning a vast array of industry sectors. Alden Atkins is currently leading the advice to Southwest Airlines in a series of civil cases consolidated into multi-district litigation arising from the DOJ's investigation into the US air travel industry, where the major players are alleged to have conspired to restrict seat capacity to inflate fares. In the energy space, Houston-based practice co-head James Reeder teamed up with William Vigdor to represent Plains All American in civil litigation arising from its sale of its crude oil and gasoline terminals to an affiliate of Valero Energy. Darren Tucker, who jointly leads the team with Reeder, recently joined the firm's Washington DC office from Morgan, Lewis & Bockius LLP, along with new head of government investigations Hill Wellford and counsel Greg Wells.

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Merger control

Within: Merger control

Vinson & Elkins LLP strengthened its offering through the hires of Darren Tucker, Hill Wellford and counsel Greg Wells from Morgan, Lewis & Bockius LLP, and also promoted Lindsey Vaala to counsel. Google recently engaged the firm to handle a number of cross-border mergers and acquisitions, while William Vigdor and Houston-based James Reeder represented Plains All-American Pipeline in litigation arising from the sale of its crude oil and gasoline terminals to an affiliate of Valero Energy. In other highlights, Vigdor and senior associate David Smith advised Sunoco on its strategic divestiture of over a thousand retail fuel outlets to 7-Eleven. Named attorneys are based in Washington DC unless otherwise stated.

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