Leif R. Sigmond, Jr.

John E. DeLascio is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. John E., 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 John E. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Hanahan is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Construction Law and Litigation - Construction. Michael J., 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 Michael J. is held by other top lawyers in the same geographic and legal practice area.

Chris P. Kallos is a top attorney recognized by Best Lawyers in the practice area(s) of Private Funds / Hedge Funds Law. Chris P., 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 Chris P. is held by other top lawyers in the same geographic and legal practice area.

Attorney, Financial Specialist for Collaborative Divorce, and Mediator From a very young age I always played the role of mediator in my family and with my friends. That is because I have always been able to understand the experiences of both sides and I have always been able to determine what is important to people in order to resolve issues peacefully. Today I use those skills as a financial specialist for collaborative divorce, as a mediator, and as an attorney. With my financial background...

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...

Juli Gumina is a top attorney recognized by Best Lawyers in the practice area(s) of Collaborative Law: Family Law, Family Law and Family Law Mediation. Juli, who practices law in Naperville, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juli is held by other top lawyers in the same geographic and legal practice area.

Anne M. Oldenburg is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Defendants. Anne M., who practices law in Chicago, Illinois, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Anne M. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Summerhill is a partner in the firm’s Litigation practice group. He is a seasoned litigator with extensive appellate and trial court level experience. He represents clients ranging from Fortune 500 companies to startups in a variety of industries, including health care, software, health information technology, financial services and FinTech, medical device, consumer products, and venture capital. Mike also arbitrates commercial disputes before the American Arbitration Associa...

Jason S. Ornduff advises high net worth families, business owners, executives, professionals and celebrities on state and federal laws regarding wealth transfer to the next generation, including estate planning, estate and trust administration, and estate and gift tax issues. Jason also counsels closely-held companies on various legal issues, especially in the areas of succession planning. Jason is a past president of the Greater North Shore Estate and Financial Planning Council. He is also a...

Dennis is a senior partner and a founder of Barack Ferrazzano. He concentrates his practice on commercial real estate and business planning matters. Dennis is the primary North American real estate counsel for Bernard Arnault, Agache, LVMH, and the LVMH brands in the Americas. Dennis is consistently ranked among the top lawyers in Illinois for his real estate practice. He has been Band ranked in Chambers USA for more than 20 consecutive years, named by Leading Lawyers as the #1 Real Estate La...