Margaret A. Gisch

Thomas B. Shapira’s practice is focused on transactional and regulatory health care matters and represents numerous physician groups with respect to the formation and/or consolidation of medical practices, physician practice sales and acquisitions, and the establishment of concierge/retainer practices. Tom has worked with health care providers to address numerous operational issues, including the creation of exclusive provider arrangements, hospital/physician joint ventures and preparat...

John V. Kalantzis is a complex personal injury attorney whose practice spans aviation law, wrongful death, and serious, multi-jurisdictional injury cases. He represents individuals and families in high-stakes litigation involving corporate negligence and systemic failures, combining strategic advocacy with a thoughtful, client-centered approach to help them navigate life’s most difficult circumstances. As a member of the firm's nationally recognized aviation practice, John has advocated...

Sean M. Houlihan is a partner at Power Rogers LLP in Chicago, Illinois, where he represents individuals and families in complex personal injury litigation . Since joining the firm in 2002, he has handled matters involving medical malpractice , aviation accidents, premises liability , automobile accidents , and product liability claims. His practice focuses on helping injured clients pursue compensation after serious accidents and acts of negligence. Mr. Houlihan’s recognized practice ar...

Michael Hartmann is active in all phases of intellectual property law with an emphasis in intellectual property litigation and technology protection and transfer in the United States and internationally. He has acted as lead trial counsel in jury and bench trials, International Trade Commission investigations, and related pre-trial and appellate proceedings in diverse technical fields. These include software, telecommunications, machine vision and semiconductor manufacturing, oil field drilli...

Ken Davis helps his health care clients design, structure and grow their businesses. He represents physicians, hospitals, ancillary service companies and other health care and e-health providers and businesses in transactions and regulatory matters. With decades of experience and ranked as a leading lawyer by Chambers USA: America's Leading Lawyers for Business, Ken is a trusted legal advisor for his health care clients' businesses. Ken is one of America's best-known attorneys and frequently ...

Known for her diplomacy and practical problem-solving, Jessica Lingertat approaches each transaction with a steady, collaborative hand. Her clients—including large-scale developers entering competitive markets and construction lenders funding varied projects—value her ability to balance risk and reward, structure creative solutions, and help deals cross the finish line with minimal friction. Jessica steers financings and other transactions related to the construction, development ...

Jordan Klein’s broad-based trust and estate practice encompasses all aspects of estate planning, trust and estate administration and settlement, wealth transfer, philanthropy and fiduciary counseling services. His clients include corporate executives, families with dynastic wealth, privately held business owners, professionals, fund managers, family offices and private foundations. Jordan has significant experience designing creative solutions to achieve his clients’ estate planni...

As a partner in the Intellectual Property practice group, Jeff focuses his work on patent litigation and strategic counseling related to pharmaceutical, chemical, biotechnology, electrical engineering, agricultural and food products. A registered patent attorney with four decades of experience, Jeff has successfully represented both patent owners and patent challengers through all stages of federal litigation and appeals. A significant portion of Jeff’s practice includes advising pharma...

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

Tom Quinn loves the art of persuasion. He got his first lessons in this critical skill through door-to-door campaigning in college for candidates who had dreams of changing the world through public service, and later by gathering thousands of petition signatures for initiative campaigns to reform state government. Through all those one-on-one encounters with everyday people in their homes, on street corners, or in meeting halls, Tom learned what it takes to move a person to support a point of...