Leon Greenfield > WilmerHale > Washington DC, United States > Lawyer Profile
WilmerHale Offices
2100 Pennsylvania Avenue NW
Washington DC 20036
United States
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Leon Greenfield
Work Department
Antitrust and Competition Government Contracts National Security ; Antitrust Litigation ; Foreign Investment in the US (CFIUS) ; Intersection of Antitrust and IP
Position
Partner
Career
Leon B. Greenfield has an exceptionally wide breadth of experience representing clients in complex antitrust-related matters. He has represented clients in cutting edge Section 2 litigation and agency matters. He has secured antitrust clearance for major acquisitions, litigated cases in federal and state court and counseled clients on many types of antitrust issues. Mr. Greenfield also has broad experience in matters outside the antitrust area, including securities regulatory matters and litigation and complex business litigation.
Practice
Many of Mr. Greenfield’s recent matters have involved complex issues relating to monopolization allegations. Mr. Greenfield’s practice also includes obtaining merger clearance for transactions in a diverse range of industries, including life sciences, defense and aerospace, computer products, scientific equipment, agricultural and other chemicals, entertainment, professional services, airlines and financial services. Many of those transactions have required regulatory approval both in the United States and other countries.
Mr. Greenfield has also handled many civil non-merger competition matters, both in the United States and the European Union, and regularly counsels clients on antitrust matters. He has represented clients in a variety of securities, regulatory and litigation matters and has been involved in many litigation and major internal investigations in the defense and aerospace, securities and corporate governance areas.
Professional Activities
Mr. Greenfield has taught courses on comparative competition law and international civil litigation at Georgetown University Law Center. He also speaks frequently and has participated in events such as the ABA Antitrust Section Spring Meeting, the ABA symposium on the Antitrust Modernization Commission at Mid-Course, the Penn State Law School Seminars, the IBA Antitrust Conference in Sydney, Australia, the Canadian Competition Invitational, and the British Institute of International Comparative Law’s Workshops on International Cartels and Efficiencies in Merger Analysis. Mr. Greenfield also writes regularly on antitrust topics.
Mr. Greenfield is a Senior Editor of the Antitrust Law Journal. He is Co-Editorial Chair of the Section of Antitrust Law Mergers and Acquisitions, 4th edition (forthcoming). Mr. Greenfield previously served as the Editorial Board Chair of the 2009 Annual Review of Antitrust Law Developments and as a board member in 2007 and 2008.
Memberships
- District of Columbia
Education
JD, University of Chicago Law School, 1989
BS, Pennsylvania State University, 1986
Lawyer Rankings
United States > Antitrust > Merger control
Fielding a ‘deep bench of attorneys in both the US and Europe’, WilmerHale advises clients on HSR filings and possesses strong contentious capabilities, advising clients across the defense, healthcare, and telecoms. The team is well-positioned to handle transactions requiring multijurisdictional approvals, representing domestic and international clients in agency reviews and challenges. Antitrust chair Thomas Mueller handles all elements of merger clearance with transatlantic implications, while co-head Hartmut Schneider, dual-qualified in the US and Germany, is noted for his experience in the life sciences and tech sectors. Leon Greenfield is praised for his ‘strong analytical skills.’ Lawyers mentioned are based in Washington DC.
Lawyer Rankings
Top Tier Firm Rankings
- Finance > Financial services regulation
- Antitrust > Cartel
- International trade > CFIUS
- Antitrust > Civil litigation/class actions: defense
- Industry focus > Education
- Industry focus > Education
- Industry focus > Education
- Intellectual property > Patents: licensing
- Industry focus > Native American law
- Intellectual property > Patents: litigation (full coverage)
- Dispute resolution > Securities litigation: defense
Firm Rankings
- Media, technology and telecoms > Cyber law (including data privacy and data protection)
- Dispute resolution > General commercial disputes
- M&A/corporate and commercial > M&A: middle-market ($500m-999m)
- Media, technology and telecoms > Outsourcing
- Government > State attorneys general
- Media, technology and telecoms > Technology transactions
- International trade > Trade remedies and trade policy
- M&A/corporate and commercial > Venture capital and emerging companies
- Finance > Capital markets: equity offerings
- M&A/corporate and commercial > Corporate governance
- International trade > Customs, export controls and economic sanctions
- Government > Government contracts
- Government > Government relations
- Dispute resolution > International arbitration
- Healthcare > Life sciences
- Labor and employment > Employee benefits, executive compensation and retirement plans: transactional
- Environment > Environment: regulatory
- Dispute resolution > Financial services litigation
- Finance > Fintech
- Media, technology and telecoms > Media and entertainment: litigation
- Antitrust > Merger control
- Intellectual property > Patents: litigation (International Trade Commission)
- Tax > US taxes: non-contentious
- Finance > Commercial lending
- Real estate > Real estate
- Finance > Restructuring (including bankruptcy): corporate
- Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)
- Finance > Capital markets: debt offerings
- Dispute resolution > Corporate investigations and white-collar criminal defense