Katharine O’Connor focuses her practice on complex antitrust litigation, government investigations, defending mergers and acquisitions before antitrust enforcement agencies, and counseling clients on antitrust compliance issues. She has experience representing clients in a wide array of industries, including health care, manufacturing, food and finance
Katharine is a member of the firm’s antitrust and competition practice, which has been designated a “Global Elite” practice, one of the top 25 in the world, by Global Competition Review each year since 2013. She has been recognized by Legal 500 US and Super Lawyers as excelling in the field of antitrust.
Katharine has tried cases before juries, judges and arbitration panels, presented evidentiary hearings in federal and administrative courts, and argued before the US Court of Appeals for the Seventh Circuit, federal district courts and state courts.
While in law school, Katharine was the managing articles editor of the University of Illinois Law Review and a legal extern to Magistrate Judge David G. Bernthal of the US District Court for the Central District of Illinois
Education
University of Illinois College of Law, JD, summa cum laude, Order of the Coif, 2010
University of Chicago, BA, with honors, 2001
Admissions
Illinois
Courts/Agencies
US Court of Appeals for the Seventh Circuit
US District Court for the Central District of Illinois
US District Court for the Northern District of Illinois
US District Court for the Southern District of Illinois
US District Court for the Western District of Michigan
US District Court for the Eastern District of Wisconsin
Languages
English
Spanish
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Chicago, Illinois / McDermott Event / September 24, 2019
On the Subject / June 20, 2019
Special Report / June 2019
Special Report / June 2018
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Law360 / May 10, 2019
Law360 / November 30, 2018
Chicago / Firm Promotes 28 Lawyers From Across Global Offices and Practice Areas / November 29, 2018
Law360 / March 3, 2018
Chicago / Law360 / January 18, 2018
Chicago / Law360 / December 19, 2017
Ill. Health System Blasted in Insurer-Contract Antitrust Row
Chicago / Law360 / September 22, 2017
Global Competition Review / August 22, 2017
Chicago / Global Competition Review / March 7, 2017
Law360 / September 9, 2015
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