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Executive Summary The antitrust world is currently riding a wave of cases alleging “collusion by code”—purported conspiracies in which competitors …
August 26, 2026
August 26, 2026 • 10-minute read
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In addition to our representation of clients in merger investigations, Vinson & Elkins has a long track record of representing companies and individuals in antitrust and unfair competition investigations by government agencies. In the U.S., the Sherman Act is a civil and criminal statute so our clients face potential criminal and civil liability. Our team has years of experience defending clients in criminal and civil investigations.
独占禁止法調査
米国司法省は、米国内及び国際カルテルに対する調査・訴追を強化しています。同省の年間の罰金徴収額は10億ドルを超え、刑事訴追件数が50件を上回ることも、もはや珍しいことではありません。2009年以降に同省が罰金として徴収した金額は50億ドル超に上ります。独占禁止法違反の平均服役期間は、今や24カ月になります。米国司法省の最優先事項は、米国の消費者に影響を与える国際的な価格協定と談合の訴追です。
There are five types of non-merger antitrust and unfair competition investigations that our clients may face:
We represent our clients in all of these types of investigations and have achieved successful results for our clients in many different investigations. We provide below more details on our capabilities and experience.
Grand Jury Cartel Investigations: One of our strengths is representing companies and individuals ensnared in criminal grand jury investigations of price fixing, bid rigging, and market allocation. We have represented corporate and individual clients in almost every major criminal antitrust investigation over the last two decades. Partnering with our Government Investigations and White Collar practice, our Antitrust team includes experienced former DOJ prosecutors and seasoned defense lawyers who effectively defend companies and individuals summoned before grand juries or indicted for alleged antitrust offenses. We have represented clients in such diverse industries as transportation, financial services, computer products, steel, chemicals, energy services, real estate, consumer products, and food and beverages.
We are one of the leading firms representing companies involved in multi-jurisdiction cartel investigations. Our representations have included both domestic and foreign companies as well as individuals in connection with alleged international conspiracies. We have deep experience navigating the complexity of defending multiple simultaneous investigations of cartel conduct.
In addition to Fortune 100 companies, we also represent individuals in antitrust investigations. Individuals face potential jail sentences (up to 10 years) and fines. Our lawyers have represented senior executives and other key employees in many investigations. We work with individuals to develop the best strategies to defend them; the ultimate goal is to try to convince the enforcement authorities not to prosecute our client.
Recently, the U.S. government has formed a multi-agency Procurement Collusion Strike Force to focus on enforcement against potential bid rigging in public procurement, which is considered cartel conduct. The Strike Force has been busy: at least two dozen of DOJ’s open grand jury investigations reportedly involve public procurement. Partnering with our Government Contracts practice group and with deep knowledge of the contracting process, our experienced team is well-positioned to effectively defend companies and individuals in these investigations.
Civil DOJ/FTC Investigations: Vinson & Elkins lawyers have represented clients in multiple civil investigations by the DOJ and FTC. Our experience runs the gamut: from representing clients in civil investigations involving joint ventures, teaming agreements and other competitor collaborations, to monopoly investigations, to cases involving consumer protection issues and data privacy before the FTC.
Our team includes lawyers who were former senior enforcement officials at the FTC and DOJ. We have worked on some of the largest civil investigations conducted by the agencies. With our strong team, we can develop strategies for companies under investigation by the U.S. antitrust agencies.
Worldwide Agency Investigations: We regularly advise and represent Fortune 100 clients in jurisdictions outside of the United States. Our lawyers have experience in many jurisdictions and travel the world to defend our clients. We have appeared in front of competition agencies in Europe (including the European Commission), Australia, Brazil, Japan, South Korea, Taiwan, the United Kingdom, China, and Canada.
We have defended clients in investigations of abuse of dominance, particularly on technology issues. In these investigations, our representation often includes coordinating a global strategy for numerous investigations to achieve successful results for our clients around the globe.
We are particularly experienced at representing companies and individuals in multi-jurisdiction cartel investigations. The impact of cartel conduct is not usually confined to the borders of the United States and impacts jurisdictions throughout the world. We have an experienced team of lawyers who can navigate the complexities of a company facing multiple investigations in multiple jurisdictions.
Congressional Investigations: Congress is increasingly focused on antitrust issues. Working with our Government Investigations lawyers, we are well positioned to represent clients in front of Congress and in Congressional investigations. Our lawyers in our Washington office have worked for Congressional committees and members of Congress and know the ins and outs of Congressional investigations. With our experience, we are well positioned to represent our clients in antitrust and unfair competition investigations conducted by House and Senate committees.
State Antitrust and Unfair Competition Investigations: In our federal system, states also have vigorous antitrust enforcement agencies. Our clients regularly face antitrust and unfair competition conducted by state attorneys general and other state agencies. We have represented in clients in multiple state investigations involving all aspects of antitrust law with a particular emphasis on the energy sector. With our roots in Texas, we have vast experience in representing clients in front of Texas agencies. But our experience goes well beyond Texas with our lawyers regularly representing clients in front of agencies of other states, in particular California and Florida, which have been very active in their enforcement.
当事務所は、過去10年間に行われた重大な独占禁止法違反調査のほぼ全案件を手がけ、企業・個人を弁護してまいりました。元司法省検事を務めた敏腕弁護士や、被告側弁護歴数十年を誇るベテラン弁護士のリーダーシップの下、当事務所の独占禁止法チームは、行政調査・ホワイトカラーチームと連携しながら、大陪審に召喚された、あるいは独占禁止法違反の疑いで起訴された企業や個人のために効果的な弁護活動を展開しています。これまでに、輸送、コンピューター製品、鉄鋼、化学、エネルギーサービス、不動産、民生用製品、食品・飲料など多岐にわたる業界において、米国内はもとより米国外の企業や個人の代理人として国際的な共謀事案の弁護に携わってまいりました。
更に当事務所の独占禁止法チームは、内部調査や独占禁止法研修といった事前対応策の実施を通じ、刑事犯罪捜査を回避するための支援を数多くの企業に提供してきました。また、企業が司法省反トラスト局から刑事免責を受けるべく尽力した実績も数多く有しております。米国政府は、企業自体及びその従業員を告発しないという合意と引き換えに、企業が独占禁止法違反を自主申告することを認める刑事免責(リニエンシー)制度を設けており、大きな成果を挙げています。このような手続に精通している当事務所であればこそ、効果的かつ効率的な調査への対応が可能であり、必要だと判断された場合には訴訟に対応する体制も整っています。
大手自動車部品サプライヤー及びその関連会社の代理人として、米国司法省による自動車部品案件の調査対応を手がけました。
米国内外の政府当局が調査中の独占禁止法案件において、国際企業とその米国関連会社の代理人を務めています。本件の調査対象には、世界規模の航空・海上輸送市場に関わるカルテル行為と価格協定が含まれており、関連市場の評価、取引額及び発生し得る損害などが主な争点になっています。
汎用化学製品の世界的メーカーが共謀してポリウレタン関連の価格協定を行ったとする独占禁止法の民事事件及びそれに関係する大陪審捜査について、当該メーカーの代理人を務めました。本件の捜査は何ら起訴につながることなく終了しました。
海洋建設業界の価格協定と世界的市場分割等に関して、米国司法省が実施した国際的独占禁止法違反の刑事審査において、外国法人の代理人を務めました。依頼人は告訴されず、付随する民事訴訟も依頼人勝訴で終結しました。
現在、独占禁止法違反の申立てに関して米国司法省が進める大陪審捜査において、大手企業の代理人を務めています。
談合の疑いに関する米国司法省の調査に関して、不動産投資家及び関連法人の代理人を務めました。
地域病院による独占行為及び独占を企図したという申立てに関する米国司法省の調査について、病院の代理人を務めました。
オフショアの石油及びガス生産施設の作業員を対象とした薬物検査サービスの実施に関連した反競争的行為の申立てに関し、テキサス州及びルイジアナ州の司法長官が個別に行った捜査への対応において、大手石油・ガス生産会社の代理人を務めました。文書提出要求への回答及び事情聴取の後、両州の司法長官はそれぞれ、当事務所の依頼人に対して一切訴訟を提起することなく捜査を終結しました。
At Vinson & Elkins, we bring decades of knowledge, skill, and experience to our clients’ most complex legal matters.
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