Ryan M. Helgeson

Dan Laytin is a litigation partner in Kirkland’s Chicago office. His practice is principally concentrated in the areas of antitrust and other complex litigation. Dan has been recognized as a leading antitrust practitioner by Chambers every year from 2006 to 2022; by The Legal 500 U.S. for antitrust in 2007, 2010, 2012–2014, 2016–2022, and for appellate: supreme court in 2017; and by The Best Lawyers in America, U.S. News and World Report, Best Lawyers® from 2013 to 2023....

Kim R. Walberg is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law. Kim R., who practices law in Chicago, Illinois, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kim R. is held by other top lawyers in the same geographic and legal practice area.

Christopher N. George is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Christopher N., who practices law in Chicago, Illinois, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher N. is held by other top lawyers in the same geographic and legal practice area.

Mr. Levin has concentrated his practice on complex business transactions, including mergers, acquisitions, buyouts, private equity and venture capital investing, formation of private equity funds, debt and equity restructurings and workouts, and executive compensation, with emphasis on tax, corporate, SEC, and structuring aspects, handling transactions which range in size from several million dollars to more than $7 billion.

As a real estate partner, Brett has more than 20 years of diverse experience advising clients with respect to sophisticated real estate transactions, including acquisitions, dispositions, leasing, development, financings, and joint ventures. Brett is a trusted strategic advisor who maintains a deal-oriented approach with a goal of understanding and achieving his client’s goals in an efficient manner. Brett is thoughtful and highly cost-effective as he concentrates on the material issues...

Mark L. Durbin is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Mark L., who practices law in Chicago, Illinois, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark L. is held by other top lawyers in the same geographic and legal practice area.

Michael E. Holden is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Michael E., who practices law in Chicago, Illinois, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael E. is held by other top lawyers in the same geographic and legal practice area.

Leslie Smith is a litigation partner and was a long-time member of the Firm’s Global Management Committee. She concentrates her practice in the areas of antitrust, class action, and consumer fraud litigation. The Legal 500 stated that Leslie has a ‘good strategic approach’, ‘demonstrates personal commitment to the company’s cause’ and ‘acquires and deploys the best firm talent appropriately’. Leslie is highlighted as “2017 Life Science Sta...

Alexander C. Pappas is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law. Alexander C., who practices law in Chicago, Illinois, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexander C. is held by other top lawyers in the same geographic and legal practice area.

Thomas A. Demetrio is a trial lawyer with an emphasis on medical negligence, product liability, airplane crash and commercial litigation on behalf of plaintiffs. He is Past President of the Chicago Bar Association and Illinois Trial Lawyers Association. He is a fellow of: The American College of Trial Lawyers The International Academy of Trial Lawyers The Inner Circle of Advocates Tom has been listed in Best Lawyers in America since its inception in 1987 and was named by Best Lawyers as the C...