Bojan Guzina

Bill Kramer is an intellectual property attorney, focusing his practice on patent prosecution, patent threat analysis/response and intellectual property transfers. He has broad knowledge of many technical subjects, with particular experience in algorithm-based computer software, video distribution systems, cloud computing, artificial intelligence software, modern currency forms and transfers, and blockchain technologies. Bill leverages his technical aptitude and successful experience to help ...

Ashley Fischer is a partner in the law firm of McDermott Will & Emery LLP. She is Partner-in-Charge of the Health Industry Advisory Practice Group in Chicago. She also co-chairs the firm’s Health Antitrust Affinity Group. Ashley represents healthcare providers on a wide range of corporate and regulatory matters, focusing on affiliations, collaborations, joint ventures, managed care contracting networks such as clinically-integrated networks (CINs) and accountable care organizations ...

John A. Ybarra is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. John A., 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 John A. is held by other top lawyers in the same geographic and legal practice area.

Melissa A. Siebert is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants. Melissa A., 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 Melissa A. is held by other top lawyers in the same geographic and legal practice area.

Dan Meehan is a tax partner focused on private investment funds and their sponsors. For almost 25 years, Dan has maintained one of the most active fund-related tax practices in the world. During the 2-year period ending August 31, 2018, Dan advised on the tax aspects of over 300 fund formation projects. Almost 100 of those held one or more closings during that period, raising a combined total of over $100 billion in capital commitments. Dan’s clients include sponsors of private equity f...

James J. Lukas, Jr. is Co-Chair of the Chicago Intellectual Property & Technology Practice. He focuses his practice on intellectual property litigation with a particular emphasis on patent litigation and related client counseling. He has experience with complex patent litigation cases in federal district courts throughout the country, including both enforcing patent rights and defending against charges of infringement on behalf of clients. He has first-chaired trials and claim constructio...

Bradley V. Ritter is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Bradley V., 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 Bradley V. is held by other top lawyers in the same geographic and legal practice area.

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...

James P. Chivilo is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. James P., 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 James P. is held by other top lawyers in the same geographic and legal practice area.

Joe Duffy is an accomplished and resourceful trial lawyer who focuses his national practice on white collar criminal defense and complex business litigation. He handles all aspects of federal and state criminal prosecutions through the investigative, prosecutive and appellate stages. He has extensive experience representing individuals and corporations in internal and government investigations as well as civil and criminal jury trials and appeals. Joe has successfully represented clients in c...