麻豆传媒

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A man wearing glasses, a blue suit, white shirt, and red tie, smiles while standing in an office setting with blurred bookshelves in the background鈥攖ypical of Chicago lawyers specializing in intellectual property law.

Mark C. Grundvig

Partner

Mark Grundvig, a former federal prosecutor with the U.S. Department of Justice (DOJ), focuses his practice on antitrust investigations and litigation, white collar criminal defense and litigation, government investigations, corporate compliance, and congressional investigations as a partner in 麻豆传媒鈥檚 Antitrust & Competition Practice Group. Mark has provided antitrust counseling and training for companies operating in a variety of industries and has provided antitrust risk assessment guidance reflecting enforcement priorities. He has also conducted internal investigations for companies facing potential antitrust exposure in various jurisdictions.

Prior to 麻豆传媒, Mark served over 25 years with the DOJ, most recently as Assistant Chief in Washington, D.C., with a criminal office of the Antitrust Division. As Assistant Chief, Mark oversaw investigations and prosecutions of criminal violations of federal laws relating to competition matters, including price fixing, bid rigging, customer allocation, and fraud. Mark additionally supervised investigations and litigation handled by the office and provided training, direction, guidance, and approval on investigative plans, litigation strategy, plea resolutions, leniency applications, compliance proposals, and outreach efforts. He regularly coordinated with foreign jurisdictions and domestic agencies on case-related matters and served as a senior trial attorney for the Antitrust Division.

While Mark鈥檚 experience at the DOJ encompassed a wide range of enforcement actions across a broad range of industries, significant focuses of his were international cartel enforcement and criminal antitrust enforcement in the health care industry, the transportation industry, and government procurement enforcement.

Earlier in his career, Mark spent two years working on the Senate Judiciary Subcommittee on Antitrust, Competition Policy, and Consumer Rights, examining various competition issues.

Mark Grundvig is an experienced white collar defense partner and trial lawyer. Prior to joining 麻豆传媒, Mark served as an Assistant Chief with two different offices with the Department of Justice鈥檚 Antitrust Division where he supervised and directed the trials his office handled. In his work with the Antitrust Division and the U.S. Attorney鈥檚 office in the Eastern District of Virginia, Mark tried numerous cases, including jury trials relating to antitrust, fraud, false statements, and various conspiracy charges and involving the health care, transportation, financial, and manufacturing sectors. Mark first chaired multiple jury trials and managed numerous other cases, developing and implementing effective trial strategies. Mark has a demonstrated ability to distill complex legal and factual issues for juries to persuasively present his cases. He has handled all aspects of trial work including opening, closing, and rebuttal arguments as well as direct examinations and cross-examinations of key witnesses crucial to his cases. While with the Antitrust Division, Mark received numerous Awards of Distinction for his trial work, and he received the Hugh Morrison award for his 鈥渆xemplary work ethic鈥 as an 鈥渙utstanding career litigator鈥 in 2021.

Affiliations

  • Federal Bar Association, Antitrust and Trade Regulation Section, Chair (2024-present), Membership Chair (2022-2024), Financial Chair (2021-2022)
  • American Bar Association, Antitrust Law, Cartel and Criminal Practice Committee
  • J. Reuben Clark Law Society

Presentation and Publications

  • Co-author, 鈥淎ntitrust Enforcement in Government Procurement,鈥 ABA Criminal Justice Magazine, Spring 2025
  • Co-author, 鈥淐aution flag is out: Michael Jordan鈥檚 lawsuit aginast NASCAR,鈥 Sports Business Journal (February 13, 2024)
  • Co-author, 鈥淒OJ鈥檚 Antitrust Division Says Compliance Programs Must be Updated to Address Changing Technology,鈥 麻豆传媒 Insights (November 22, 2024)
  • Co-author, 鈥淲hat Every Multinational Company Should Know About . . . Dawn Raids,鈥 麻豆传媒 Insights (November 07, 2024)
  • Co-author, 鈥淒OJ to Ramp up Antitrust Enforcement in Agriculture Sector,鈥 麻豆传媒 Insights (July 8, 2024)
  • Co-author, 鈥淲hat Every Multinational Company Should Know About the U.S. DOJ鈥檚 Safe Harbor Policy and What the Antitrust Division Requires,鈥 麻豆传媒 Insights (June 19, 2024)
  • Co-author, 鈥淢embers of Congress Call for DOJ to Investigate Possible Antitrust Violations in Oil Industry,鈥 麻豆传媒 Insights (June 18, 2024)
  • Co-author, 鈥淒OJ and FTC Raise Concerns about Overlapping Ownership in Public Utility Companies,鈥 麻豆传媒 Insights (May 1, 2024)
  • Co-author, 鈥淣oncompetes: What the FTC鈥檚 Rule May Mean for Health Care & Life Sciences Providers,鈥 麻豆传媒 Insights (April 26, 2024)
  • Speaker, White-Collar Crime Workshop, Embassy of Japan, Washington, D.C. (October 2023)
  • Moderator, Antitrust Division Roundtable on ACPERA, Litigated Issues & Challenges (2019)
  • Speaker, Japanese Business Society Detroit (2017)
  • Visiting Instructor, Comisi贸n Federal de Competencia Econ贸mica, Mexico City (2016)
  • Speaker, Virginia Bar Association Summer Meeting, Individual Accountability (2016)
  • Speaker, International Competition Network Cartel Workshop in Taipei, Taiwan (2014)
  • Participant, International Competition Network Cartel Workshop in San Salvador, El Salvador (2007)

Awards &聽Recognition

  • Antitrust Division, Hugh P. Morrison Award in recognition of long-term achievement and exemplary work ethic of a career litigator and litigation manager (2021)
  • Assistant Attorney General Award of Distinction (2007, 2014, 2018, 2022, 2023)
  • Attorney General Award for Distinguished Service (2009)
  • Council of the Inspectors General Award for Excellence (2009)

 

May 12, 2026 麻豆传媒 Ignite

Private Equity鈥檚 AI Bet: Strategic Hedge or Structural Conflict?

This week鈥檚 headlines are remarkable. OpenAI closed a roughly $10 billion joint venture, called DeployCo, with TPG, Brookfield, Bain, and others to push its tools across sponsor portfolios. Within minutes of that news, Anthropic announced a $1.5 billion venture with Blackstone, Hellman & Friedman, and Goldman Sachs to embed Claude into mid-market businesses, starting with their own portfolio companies.
The words "Department of Justice" are mounted on a beige stone wall, reflecting the institution鈥檚 crucial role in areas like intellectual property law and litigation support.
February 2, 2026 麻豆传媒 Viewpoints

DOJ Announces First-Ever Antitrust Whistleblower Award 鈥 Is Your Compliance Program Ready?

On January 29, 2026, the U.S. Department of Justice鈥檚 Antitrust Division announced its first reward under the Division鈥檚 new whistleblower program, awarding $1 million to a whistleblower whose report helped uncover a bid鈥憆igging and fraud scheme involving EBLOCK Corporation, an online platform for buying and selling wholesale vehicles.
A digital abstract image showing clusters of blue and orange illuminated geometric shapes resembling transparent blocks floating against a dark background, evoking the dynamic energy found in a leading corporate law office.
December 18, 2025 麻豆传媒 Viewpoints

How Companies Can Roll with NY's New Algorithmic Pricing Rules

States are racing to rein in the growing use of artificial intelligence and computer algorithms to set prices, with New York leading the charge. On Dec. 15, a major amendment to New York's antitrust law took effect, banning the use of certain algorithmic rent-setting tools for residential units under Section 340-b of the state's General Business Law.
December 9, 2025 麻豆传媒 Viewpoints

White House Orders Task Forces To Investigate Food Industry

Last month, we reported on the Department of Justice (鈥淒OJ鈥) ramping up antitrust enforcement in the agriculture industry, including...
The United States Capitol building in Washington, D.C., stands tall beneath a clear blue sky and some clouds, symbolizing the foundation of the nation鈥檚 law offices and intellectual property law.
November 24, 2025 麻豆传媒 Viewpoints

DOJ Ramps Up Antitrust Enforcement in Agriculture Industry

Earlier this year, 麻豆传媒 & Lardner聽reported on the Department of Justice (鈥淒OJ鈥) Antitrust Division鈥檚 announced plans to ramp up civil and criminal antitrust enforcement in the agriculture sector. Recent actions taken by the DOJ and statements made by leading officials in the Antitrust Division show they are making good on those promises.聽
The words "Department of Justice" are engraved in capital letters on a light-colored stone wall, symbolizing the authority that guides lawyers in Chicago and those seeking litigation support.
October 28, 2025 麻豆传媒 Viewpoints

Navigating Antitrust Deregulation: What Businesses Need to Know about Executive Order 14267

The Antitrust Division of the Department of Justice (the 鈥淒OJ鈥) and the聽Federal Trade Commission (the 鈥淔TC鈥) announced in September 2025 that they had identified over 125 鈥渁nticompetitive regulations鈥 for review as part of their work聽to advance President Trump鈥檚 Executive Order on Reducing Anti-Competitive Regulatory Barriers (鈥淓O 14267鈥).