Mary Tobin

John represents large publicly traded and privately held businesses in controversies, transactional matters and tax planning involving state and local corporate income/franchise taxes, gross receipts taxes, sales and use taxes, and other business privilege taxes. He also defends clients in state tax audits and litigation before courts, administrative agencies and departments of revenue throughout the country. In addition to his state and local tax practice, John is also one of the nation&rsqu...

Daniel T. Ryan is a lawyer recognized by Best Lawyers in the practice areas of Mass Tort Litigation / Class Actions - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Daniel T. practices law in Chicago, Illinois Best Lawyers has recognized Daniel T. Ryan since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in ...

Karl Barnickol takes pride in providing practical litigation advice tailored to meet client-specific goals and counseling clients on best practices for business growth and litigation avoidance. His litigation practice focuses on defending complex mass tort and class action cases, including products and publisher liability matters, securities fraud and shareholder derivative litigation, and price-fixing and unfair competition claims. In particular, Karl has significant experience representing ...

Bill Arnault is a litigation partner in the Firm’s Chicago office. He focuses his practice in the restructuring context. He also has extensive experience litigating complex commercial cases in federal and state trial and appellate courts throughout the United States, including contract, energy, fiduciary duty, fraudulent transfer, bankruptcy, and employment cases. He has chaired or co-led multiple trials and hearings, including disputes involving Parker Drilling Company, Emerald Oil, In...

Kristen Hudson represents businesses and business people in complex commercial litigation and product liability cases in state and federal courts in Texas, Illinois and across the country. Most recently, in early 2022, Kristen was part of a trial team that received a defense verdict in a four-week jury trial in Illinois involving significant eight-figure liability for alleged benzene exposure in the printing industry. In 2021, Kristen successfully defeated three separate attempts at a tempora...

Jennifer L. Colvin is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management and Litigation - Labor and Employment. Jennifer L. practices law in Chicago, Illinois Best Lawyers has recognized Jennifer L. Colvin since 2022. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jennifer L. Colvin is held by other lawyers.

Steven L. Brenneman is a lawyer recognized by Best Lawyers in the practice area of Employment Law - Management. Steven L. practices law in Chicago, Illinois Best Lawyers has recognized Steven L. Brenneman since 2013. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Steven L. Brenneman is held by other lawyers.

Scott Mendeloff combines an 11-year tenure as a former federal prosecutor with more than 19 years of experience in private practice. He focuses his practice on commercial trials and white collar criminal litigation. Scott has been consistently recognized by Chambers USA in the area of commercial litigation and by Leading Lawyers in the areas of commercial and white collar litigation. Scott has tried to conclusion more than 50 cases in a wide array of areas in both the civil and criminal arena...

Mr. Kilyk practices exclusively in the field of intellectual property law, especially patent law. Mr. Kilyk specializes in patent post-grant review proceedings, inter partes reexaminations, interferences, and oppositions, as well as legal opinions, prosecution, and litigation matters, with specific concentration in the areas of biotechnology, chemistry, and pharmaceuticals. Recent technologies with which he has been involved include biosimilars, new chemical compounds, nucleic acid sequences,...

Kevin Van Wart is a partner Kirkland's Chicago office, where he concentrates in complex litigation, including mass tort claims, class action lawsuits, product liability and pharmaceutical claims, and high stakes commercial disputes. Kevin has served as lead trial and appellate counsel in a wide variety of cases throughout the country and teaches trial advocacy at the University of Chicago Law School. The National Law Journal featured Kevin's successful trial work in naming Kirkland to its 200...