James J. Marszalek

Catherine Krenz Doan is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Catherine, 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 Catherine is held by other top lawyers in the same geographic and legal practice area.

Jonathan A. Rosenfeld is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Jonathan A., 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 A. is held by other top lawyers in the same geographic and legal practice area.

Andrew advises public and private companies on plan design and administration, fiduciary responsibility, claims procedures, and disclosure requirements under ERISA, the Internal Revenue Code, and other laws. He has extensive experience guiding them regarding the legal, financial, and administrative issues that affect qualified and nonqualified retirement plans, health and welfare plans, and other employee benefit arrangements, including issues that arise during mergers, acquisitions, and othe...

Jonathan P. Froemel, a partner in the Chicago office of Barnes & Thornburg, is a member of the firm's Intellectual Property and Litigation Departments. Jonathan's intellectual property practice focuses on trademark prosecution and trademark, copyright and patent litigation, trademark prosecution and licensing. His litigation practice includes general commercial, construction, environmental, and real estate disputes. Jonathan represents clients in actions across the United States and has l...

Russell Knight is a top attorney recognized by Best Lawyers in the practice area of Family Law. Russell, who practices law in Chicago, Illinois, and Naples, Florida has been recognized by Best Lawyers since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Russell is held by other top lawyers in the same geographic and legal practice area. Russell Knight has practiced family law exclusively for more than 19 years. He is the founder of The...

For the past two decades, Mike has been assisting clients develop and defend their patent portfolios. A former Army officer and Ford Motor Company design engineer, clients appreciate Mike’s organized approach to problems and his ability to communicate with inventors across a wide swath of technologies. Mike is a full spectrum patent attorney and is himself a patentee. On the prosecution side, Mike has procured patents in nearly every art group other than bio/pharma and has an almost per...

As a trial lawyer, Jim’s philosophy on litigation is based on integrity and hard work for his clients. True to his roots as a prosecutor, Jim values fighting for justice on behalf of those people harmed and always acts with a sense of urgency to hold wrongdoers accountable. While at Clifford Law Offices, Jim has worked on behalf of many individuals and families whose lives have been forever impacted. As the youngest of six children born and raised on Chicago’s Southside, Jim learn...

Dan K. Webb is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Commercial Litigation, Criminal Defense: White-Collar, Litigation - Antitrust, Mass Tort Litigation / Class Actions - Defendants, Medical Malpractice Law - Defendants and Patent Law. Dan K., who practices law in Chicago, Illinois, has been recognized since 1987. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dan K. is held by other...

Jeremy D. Margolis is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Jeremy D., who practices law in Chicago, Illinois, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeremy D. is held by other top lawyers in the same geographic and legal practice area.

John Gatz is a patent attorney who concentrates his practice on patent prosecution, patent counseling and patent litigation. John has extensive experience in the life sciences and manufacturing industries. My focus Patent Prosecution/Counseling I prosecute patents and counsel clients in a number of mechanical- and chemical-related technologies including: biomechanical devices, chemical products and processes, sensor-dispensing instruments, analyte meters, test sensors, non-invasive processes,...