Stuart Chanen

A skilled negotiator and litigator, partner Michael F. Koenigsberger focuses his practice on family law- related matters. Recognized as one of Chicago’s leading lawyers in family law, he has represented hundreds of clients in complex custody and financial issues, prenuptial agreements, paternity cases and domestic relations. Particularly adept at dealing with high-asset, complex cases, Michael takes pride in working with clients through all phases of the issues they face, from litigatin...

As a seasoned litigator with the added benefit of in-house experience, Maile takes pride in her in-depth understanding of her clients and their businesses so she can anticipate their needs, their pain points, and the internal and external pressures they face. With nearly 30 years of experience litigating and counseling clients in all types of commercial litigation, Maile is meticulous, responsive, tough, and strategic. Since joining Barack Ferrazzano, Maile has represented clients in commerci...

As a sought-after transactional and regulatory advisor, Patrick J. Martinez has built his practice on executing complex healthcare acquisitions and joint ventures. He represents private equity firms and their platform companies in the acquisition and divestiture of for-profit healthcare companies, as well as provider-to-provider deals. Read full biography: https://www.mwe.com/people/patrick-j-martinez/

Tom represents clients in patent and trademark prosecution, intellectual property litigation, and post-grant patent challenges before the Patent Trial and Appeal Board (PTAB). Tom has a broad base of experience in various technological and business areas, particularly in pharmaceutical, biotechnology, chemical and medical device inventions. He drafts invalidity opinions, investigates freedom to operate, counsels on strategic portfolio management, and conducts due diligence investigations prio...

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

Jack Carriglio represents clients in commercial disputes, including the prosecution and defense of cases relating to contracts, business torts, bankruptcy, securities, product defects, patents, copyrights, trade secrets, partnership disputes, malpractice and professional disciplinary matters, and real estate litigation. In addition, Jack has a substantial practice in representing corporations and individuals at the federal grand jury, trial, and appellate courts in various criminal matters in...

David Allen helps high-net-worth individuals and families with all their legal needs. With an approach that seamlessly integrates estate planning, tax minimization and concierge lawyering, David's advice allows his clients to spend less time managing advisors and more time focusing on their passions, their businesses and their families. From restructuring valuable art collections to coordinating legal services for multibillion-dollar family businesses and family offices, David is often the fi...

Matthew F. Bergmann is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Matthew F., 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 Matthew F. is held by other top lawyers in the same geographic and legal practice area.

Lee is an intellectual property litigator and advisor who manages sophisticated portfolios for clients with worldwide operations. His practice includes the full range of intellectual property dispute and transactional matters, with an emphasis on trademark, copyright, trade secret, trade dress, privacy and litigation. Lee serves as lead counsel before state and federal courts and administrative agencies throughout the country, and he also coordinates efforts to resolve similar international d...

Susan Daley is a partner with Perkins Coie and has more than 20 years of experience in the areas of executive compensation, securities and employee benefits. She is currently President of the Chicago Chapter of the National Association of Stock Plan Professionals, Chair of the Federal Securities Law Subcommittee of the Employee Benefits Committee of the American Bar Association Section of Taxation, and a member of the BNA Pension & Benefits Advisory Board. She is a former Chair of the Ill...