About

Provided by Winston & Strawn LLP

About Winston's Antitrust practice:

  • Winston's practice is one of the few, if not the only, law firms in Illinois to offer industry-leading capabilities in all three key areas of antitrust law: (1) civil and criminal antitrust investigations and litigation; (2) merger reviews and challenges; and (3) counseling and compliance.
  • Winston is considered a “Litigation Powerhouse” by Crain’s Chicago Business and Law360. We are one of the few firms in Illinois capable of trying, and that has tried, antitrust cases to juries, judges, arbitration panels, and international tribunals.
  • Winston has deep experience across a broad and diverse range of industries, including financial services, heavy industry, manufacturing, consumer products, pharmaceuticals and medical devices, agriculture/bioengineering, technology, and health care.
  • Winston’s Chambers ranked Illinois IP litigation team routinely partners with the firm’s Illinois Antitrust team to handle antitrust and IP matters that are often resolved in the same litigation.

Our Antitrust/Competition practice has been recognized frequently including:

  • Recognized as “Law Firm of the Year” for Antitrust/Competition by Best Law Firms in 2023 and ranked “Tier 1” in Antitrust in Chicago, New York, and nationally in 2025.
  • Ranked “Tier 2” for Antitrust Law by Benchmark Litigation US in 2024.
  • Named 2024 “Competition Group of the Year” by Law360.
  • Named 2020 “Antitrust Firm of the Year” by Benchmark Litigation US.

Chambers Review

Provided by Chambers

Antitrust - Illinois

1
Band 1

What the Team is Known For

Winston & Strawn LLP is regularly trusted with antitrust counseling in a civil and criminal context, drawing praise for its litigation and trial work. Also provides expertise in matters including merger reviews and challenges, and counseling and compliance. Works within a wide range of industries, including financial services, manufacturing and consumer products. Additionally noted for its expertise in healthcare-related antitrust disputes.

Work Highlights

  • Winston & Strawn LLP defended Enbridge in an antitrust lawsuit involving allegations of monopolizing the crude oil transportation market south of Chicago.

Strengths

Provided by Chambers

Notable Practitioners

Provided by Chambers

James Herbison
1
James Herbison
Head of Antitrust
1
Band 1
James Herbison is an antitrust attorney noted for his abilities across both civil and criminal antitrust matters.

James is at the top of his craft both locally, regionally and nationally.

James is a go-to business partner who consolidates complex legal issues into practical business solutions.

Michael Mayer
3
Michael Mayer
3
Band 3

Michael Mayer focuses on criminal defense as well as counseling and litigating antitrust matters. He has notable experience acting for clients in the food sector.

Michael executes good judgment. He is a very strong writer.

Ranked Lawyers at
Winston & Strawn LLP

Provided by Chambers
Filter by
Band

Illinois

Antitrust

James Herbison
1
James Herbison
Head of Antitrust
1
Band 1
Michael Mayer
3
Michael Mayer
3
Band 3

Members

Provided by Winston & Strawn LLP

Connor Reidy

Eva Cole

Eva Cole

Head of Department

Gordon Dobie

James Herbison

James Herbison

Head of Department

Kevin Goldstein

Matthew DalSanto

Clients

Provided by Winston & Strawn LLP

Chicago Parking Meters

Claxton Poultry Farms

Discover Financial Services

Equifax Inc.

Motorola Solutions

National Pork Producers Council

Panasonic Corporation

Rabobank Cooperative

TreeHouse Foods

Industries

Provided by Winston & Strawn LLP

Agriculture/Bioengineering

Automobiles & Parts

Banks

Charities / Not for Profit

Chemicals

Construction & Materials

Consumer Product Manufacturing

Energy

Financial Services

Food & Drink Producers

Forestry & Paper

Health Care

Industrial Engineering

Insurance

Media

Mining & Metals

Pharmaceuticals & Life Sciences

Retail

Software & Computer Services

Sports

Technology, Hardware & Electronics

Telecommunications

Utilities