Jack R. Bierig

Matthew M. Murphy is a partner in the Financial Restructuring group, a member of the Special Situations Group, and the chair of the Chicago Office. He advises a variety of clients in complex business reorganizations, debt restructurings, and troubled company M&A. Mr. Murphy has counseled clients up and down the capital structure through out-of-court and Chapter 11 restructuring initiatives, the purchase of or investment in distressed companies, and post-petition lending.

Gregory E. Fosheim provides counsel on a wide array of corporate, transactional and regulatory compliance matters across the healthcare and life sciences industry. Leveraging his vast public health background and insight, he advises clients on healthcare fraud and abuse risks, Medicare, Medicaid and private payor billing, as well as clinical research and laboratory compliance in connection with federal grants. He also represents hospitals and health systems in all transactional matters, parti...

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...

Stephanie advises on complex tax issues, investment structures, acquisitions and sales of special assets, trust and probate administration and charitable giving. She serves as a fiduciary consultant on litigation matters for corporate fiduciaries and interfamily disputes. Stephanie also represents taxpayers on contested tax matters, including federal and state audits and administrative appeals. Stephanie’s clients include high net worth individuals, family offices and corporate fiduciar...

G. Peter Nichols is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. G. Peter, 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 G. Peter is held by other top lawyers in the same geographic and legal practice area.

Janet Davis concentrates her practice in the areas of insurance coverage, professional liability, and construction litigation. She represents and counsels insurers on a wide range of issues and policies including errors and omissions, directors and officers coverage, employment practices liability, life sciences, and general liability. She represents architects, engineers, surveyors, lawyers, and accountants in litigated and arbitrated matters and also provides design professionals with gener...

Lawrence Levin primarily represents public companies, private companies and investment banks on a wide range of regulatory, transactional and general corporate matters. He is the co-head of Katten's Corporate Securities practice in Chicago. Larry primarily advises publicly traded issuers on day-to-day federal securities law disclosure and compliance matters and board corporate governance. He also represents issuers and underwriters in offerings of equity, debt, Rule 144A high-yield offerings ...

For more than two decades, private debt providers and banks have turned to Derek Ladgenski to advise on their most complicated and challenging debt financing deals. Derek helps his clients close complex financings quickly and efficiently, without surprises or delays, and builds their relationships and market presence along the way. Derek counsels lead arrangers, administrative agents and lenders on cash-flow acquisition and recapitalization financings, "take private" transactions and debt fin...

Michael, chair of the firm’s Intellectual Property practice group, provides strategic counsel to established enterprises and entrepreneurs concerning the development and protection of extensive global intellectual property portfolios. He represents clients from a wide range of industries, including consumer electronics, restaurants, retail housewares, beverage manufacturing, software, entertainment and a variety of technology-focused industries. Michael has served as lead counsel in tri...

Philip Harnett Corboy, Jr. was admitted to the Illinois Bar in 1978 and worked in a small white-collar criminal defense firm before joining the criminal division of the Cook County State's Attorney's Office that same year. At the time of his resignation from that public office in 1985, he was a "first-chair" prosecutor - responsible for trying such felonies as murder, rape, armed robbery and kidnapping - in one of the major courtrooms at the Cook County Criminal Courts Building at 26th and Ca...