Katherine E. Culbertson

Craig Boggs has more than 25 years of experience representing clients in a vast array of labor and employment issues. Craig has extensive experience in successfully prosecuting and defending litigation matters involving temporary restraining orders and injunctions related to non-compete agreements, other restrictive covenants and trade secret misappropriation. Craig also routinely counsels employers on resolving such disputes amicably in advance of litigation and on drafting effective restric...

David Heiss is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Litigation - Insurance. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

Daniel S. Kirschner is a partner at the Chicago plaintiffs’ law firm of Corboy & Demetrio. As a trial lawyer, Mr. Kirschner represents victims of catastrophic personal injury, wrongful death and medical malpractice. Mr, Kirschner has successfully handled cases against many of the nation’s largest insurance companies and corporations at the pretrial, trial and appellate levels in state and federal court in Illinois and throughout the United States.Mr. Kirschner concentrates his...

Craig Squillace has worked for a number of years on various cases, particularly vehicular accident cases, at Clifford Law Offices. He also has worked on claims due to medical negligence, product liability, transportation litigation, and municipal liability. In 2015, he obtained a record $4 million settlement in Will County on behalf of a family who lost their 60-year-old mother in a tragic trucking crash. He was part of the Clifford Law Offices team that reached a settlement with a major auto...

David Koropp is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

Colin Dunn is a highly successful premise liability lawyer, aviation accident attorney, and partner at Clifford Law Offices. He obtained his law degree from Loyola University School of Law in Chicago, graduating magna cum laude. Mr. Dunn was eighth in his class of 169, and served on the Law Journal. During law school, he worked for the Honorable Justice Ann Williams of the Seventh Circuit Court of Appeals as well as for the Honorable Judge Ronald Guzman of the United States District Court for...

Mark Hagedorn advises on a wide variety of intellectual property matters, including patent, trademark and copyright solicitation and IP litigation, licensing and counseling. Appreciated for his honesty and practical legal advice, Mark consistently delivers utilitarian solutions that help his clients resolve disputes and litigation efficiently and economically. Mark offers broad experience in virtually all phases of IP counseling and litigation. He understands and has represented clients invol...

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.

Don brings to the table more than 30 years of experience advising companies and executives on best practices in executive and board compensation. Working within the framework of tax, accounting, SEC reporting, and bank regulatory issues, Don helps guide his clients on how best to recruit, incentivize, and retain top talent as well as advise individual executives in their transition into and out of C-Suite positions. Don is a partner in Barack Ferrazzano’s Compensation & Benefits Gro...

Kelly Koss focuses her practice in domestic and international construction and commercial litigation and arbitration. She is respected by clients for her counsel regarding litigation avoidance techniques and her willingness to work collaboratively to seek early resolution to disputes. When litigation is unavoidable, Kelly is prepared to advocate zealously for her clients to achieve desired results. Kelly represents owners, developers, contractors and design professionals in disputes related t...