Jason Leland Chrestionson

Kevin represents his clients in all aspects of patent law, including due diligence investigations for mergers and acquisitions, patent counseling and prosecution, strategic management of patent portfolios, and opinion preparation, focusing his practice primarily on the biotechnological, pharmaceutical, and medical device industries. Kevin’s work encompasses a broad spectrum of technologies, including therapeutics such as cellular therapies, gene therapies, vaccines, large molecules (bio...

John Augustyn is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Patent Law. John, who practices law in Chicago, Illinois, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.

Rebecca Fitzpatrick P.C. is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Rebecca, 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 Rebecca is held by other top lawyers in the same geographic and legal practice area.

David E. Rapoport is the founding and managing partner of Rapoport Weisberg & Sims P.C. In 42 years as a trial attorney, he has consistently won multimillion-dollar jury verdicts and settlements for people who have been wrongfully injured and the families of people who have been wrongfully killed. Recently, David obtained record high jury verdicts and settlements for his clients, including a $ 13.25 medical malpractice jury verdict in 2023, a $6.4 million medical malpractice settlement an...

Kristofer S. Riddle is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs, Product Liability Litigation - Plaintiffs and Qui Tam Law. Kristofer S., 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 Kristofer S. is held by other top lawyers in the same geographic and legal practice area.

Ronald Dicerbo is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Ronald, who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ronald is held by other top lawyers in the same geographic and legal practice area.

Kathryn Kovitz Arnold is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Kathryn Kovitz, who practices law in Chicago, Illinois, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kathryn Kovitz 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...

Timothy R. Conway is a founding partner of Conway & Mrowiec. He is currently of counsel to Conway & Mrowiec Attorneys LLLP, a four-lawyer Chicago firm which represents all participants in the construction process: contractors, design/builders, engineers, construction managers, trade contractors, architects, owners and sureties. Mr. Conway is a veteran of numerous arbitrations, trials, and mediations. He has represented builders on a wide variety of construction projects, both public a...

John E. DeLascio is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. John E., who practices law in Chicago, Illinois, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John E. is held by other top lawyers in the same geographic and legal practice area.