Margaret A. Gisch

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....

Mr. Deer represents management in a variety of employment-related matters, including litigation involving age, race, sex, and disability discrimination claims, covenants not to compete, trade secrets, wage and hour claims, ERISA claims, and other workplace torts. Mr. Deer has been named in the 2009 and 2010 editions of The Best Lawyers in America.Mr. Deer has acted as lead trial counsel in employment discrimination/wrongful discharge cases in the federal district and state courts in Illinois,...

Michael J. Summerhill is a partner in the firm’s Litigation practice group. He is a seasoned litigator with extensive appellate and trial court level experience. He represents clients ranging from Fortune 500 companies to startups in a variety of industries, including health care, software, health information technology, financial services and FinTech, medical device, consumer products, and venture capital. Mike also arbitrates commercial disputes before the American Arbitration Associa...

Jennifer M. Mikulina is a top attorney recognized by Best Lawyers in the practice area(s) of Trademark Law. Jennifer M., who practices law in Chicago, Illinois, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer M. is held by other top lawyers in the same geographic and legal practice area.

Devon Beane brings clarity and control to complex patent disputes, guiding clients with a strategist’s mindset and a trial lawyer’s precision. Clients rely on her to deliver results in trial, IPRs, and global IP strategy when the stakes are high. Devon helps companies protect their innovations and resolve complex patent disputes in forums where precision and preparation are critical. She has led litigation teams in federal courts across the country, as well as before the Internati...

Susan E. Brice is a bold litigator, advocate, and advisor with 30 years of experience specializing in environmental law, toxic tort, and product liability defense work. After departing Big Law, where she served in leadership roles, she joined Nijman Franzetti LLP, an all-women owned business savvy boutique in 2020. Over the years, she has worked on significant matters involving at least nineteen states and the Virgin Islands. She has experience in all major aspects of environmental law, takin...

Ivan M. Poullaos is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Ivan M., who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ivan M. is held by other top lawyers in the same geographic and legal practice area.

Jonathan Amarilio is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Commercial Litigation. Jonathan, who practices law in Chicago, Illinois, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonathan is held by other top lawyers in the same geographic and legal practice area.

Mark Grossmann is global chair of Katten's Corporate practice. Mark knows how to make deals happen. For more than 20 years, he has guided principals and finance sources alike through critical transactions that have helped them grow, compete and realize value. He is known for a refreshingly direct approach that cuts away extraneous issues and gets to the heart of what the parties need. Mark knows that lawyers are often seen as obstacles who can bury the deal in the legal details. He takes a di...

Mark A. Carter is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Mark A., 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 Mark A. is held by other top lawyers in the same geographic and legal practice area.