Katharine O"Connor > McDermott Will & Emery LLP > Washington DC, United States > Lawyer Profile
McDermott Will & Emery LLP Offices
THE MCDERMOTT BUILDING, 500 NORTH CAPITOL STREET, NW
WASHINGTON, DC 20001-1531
DISTRICT OF COLUMBIA
United States
- Firm Profile
- Go to...
Katharine O"Connor
Work Department
Antitrust/Competition
Position
Katharine (Kate) O’Connor focuses her practice on complex antitrust litigation, antitrust investigations brought by the US antitrust regulators and state attorneys general, and counseling clients on antitrust compliance questions. Kate also regularly represents clients before the antitrust regulators related to mergers and acquisitions. Kate has experience representing clients in a wide array of industries, including healthcare, manufacturing, food and finance.
Kate is a member of the firm’s antitrust and competition practice, which Global Competition Review has designated a “Global Elite” and “Illinois Elite” practice. She has been recognized by Global Competition Review, Benchmark Litigation, Legal 500 US and Super Lawyers as excelling in the field of antitrust.
Kate 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. She is a member of the Northern District of Illinois Trial Bar.
While in law school, Kate 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.
Lawyer Rankings
United States > Antitrust > Civil litigation/class actions: defense
(Next Generation Partners)The ‘consistently excellent’ team at McDermott Will & Emery LLP leverages its strength across the full spectrum of antitrust issues to offer a strong litigation practice with notable strength advising on civil class actions and price-fixing allegations. Global practice co-head Raymond Jacobsen, in Washington DC, has a strong track record acting for clients in the defense industry. Katharine O’Connor, in Chicago, handles antitrust compliance and litigated merger work for clients in the healthcare, food, and manufacturing sectors; also in Chicago is Stephen Wu, who co-chairs the firm’s healthcare antitrust sub-group. Michelle Lowery splits her time between Los Angeles and Chicago and heads the firm’s West Coast antitrust offering. In New York, Nicole Castle is another key contact for healthcare antitrust work, working alongside seasoned antitrust expert Elai Katz, who joined the team from Cahill Gordon & Reindel LLP in August 2023. Another new arrival is Ryan Tisch, who joined the Washington DC office from Crowell & Moring LLP in May 2023, strengthening the team’s merger clearance offering.
Lawyer Rankings
- Next Generation Partners United States > Antitrust > Civil litigation/class actions: defense
- Civil litigation/class actions: defense United States > Antitrust
Top Tier Firm Rankings
- Media, technology and telecoms > Technology transactions
- Healthcare > Health insurers
- Healthcare > Life sciences
- Media, technology and telecoms > Outsourcing
- Healthcare > Service providers
- Tax > US taxes: contentious
- Tax > US taxes: non-contentious
Firm Rankings
- Labor and employment > Employee benefits, executive compensation and retirement plans: design
- Labor and employment > Employee benefits, executive compensation and retirement plans: transactional
- Energy > Energy regulation: electric power
- Tax > Financial products
- Labor and employment > Immigration
- Tax > International tax
- M&A/corporate and commercial > M&A: middle-market ($500m-999m)
- Dispute resolution > Product liability, mass tort and class action - defense: toxic tort
- Energy > Renewable/alternative power
- Intellectual property > Trademarks: non-contentious (including prosecution, portfolio management and licensing)
- Labor and employment > Workplace and employment counseling
- Insurance > Advice to insurers
- Media, technology and telecoms > Cyber law (including data privacy and data protection)
- Labor and employment > ERISA litigation
- Dispute resolution > General commercial disputes
- Insurance > Insurance: non-contentious
- Labor and employment > Labor and employment disputes (including collective actions)
- Labor and employment > Labor-management relations
- Intellectual property > Patents: prosecution (including re-examination and post-grant proceedings)
- Real estate > Real estate finance
- Finance > Capital markets: equity offerings
- Antitrust > Cartel
- Antitrust > Civil litigation/class actions: defense
- Energy > Energy transactions: electric power
- Energy > Energy transactions: oil and gas
- Government > Government contracts
- Antitrust > Merger control
- Intellectual property > Patents: litigation (full coverage)
- Finance > Restructuring (including bankruptcy): corporate
- Dispute resolution > Securities litigation: defense
- Finance > Structured finance: derivatives and structured products
- International trade > Trade remedies and trade policy
- Dispute resolution > Corporate investigations and white-collar criminal defense
- Dispute resolution > International arbitration
- M&A/corporate and commercial > Private equity buyouts: large deals ($500m+)
- Investment fund formation and management > Private equity funds (including venture capital)
- Real estate > Real estate
- Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)
- Finance > Commercial lending
- Finance > Fintech