Colin Diamond

David Zwaska is a lawyer recognized by Best Lawyers in the practice areas of Family Law, Family Law Arbitration and Family Law Mediation. David practices law in Chicago, Illinois Best Lawyers has recognized David Zwaska since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which David Zwaska is held by other lawyers.

Lisa Mazur is co-chair of McDermott Will & Emery’s Digital Health practice and advises healthcare providers and technology companies on a variety of legal, regulatory and compliance matters. Read full biography: https://www.mwe.com/people/mazur-lisa/

As a real estate partner, Brett has more than 20 years of diverse experience advising clients with respect to sophisticated real estate transactions, including acquisitions, dispositions, leasing, development, financings, and joint ventures. Brett is a trusted strategic advisor who maintains a deal-oriented approach with a goal of understanding and achieving his client’s goals in an efficient manner. Brett is thoughtful and highly cost-effective as he concentrates on the material issues...

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...

Albert F. Hofeld is a lawyer recognized by Best Lawyers in the practice area of Personal Injury Litigation - Plaintiffs. Albert F. practices law in Chicago, Illinois Best Lawyers has recognized Albert F. Hofeld since 1983. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Albert F. Hofeld is held by other lawyers.

Michael Carrillo advises individuals and businesses on patent, trademark, copyright and trade secret matters, as well as on foreign and domestic patent and trademark protection. Michael navigates clients through and beyond developing, managing and policing small and large IP portfolios, creating practical strategies that leverage his clients’ assets while safeguarding their bottom line. A member of the firm’s Management Committee, Michael is listed among The Best Lawyers in Americ...

John Cullis focuses his practice on intellectual property litigation, counseling and procurement. Over the course of his career, John has been recognized among his peers as a preeminent litigator in the field of intellectual property. John is an accomplished trial lawyer who has first-chaired trademark, trade dress, trade secret, copyright and unfair competition matters before judges and juries in numerous U.S. federal courts and the U.S. Patent and Trademark Office’s (USPTO) Trademark ...

William (Bill) J. Butler focuses his practice on estate planning and probate administration matters. Bill counsels family groups and individuals on all aspects of wealth transfer planning, with an emphasis on formulating estate plans that maximize and protect wealth while minimizing transfer taxes. Bill is the global head of McDermott’s Private Client Group and is a member of the Firm’s Management Committee. Bill represents many large, multigenerational family groups, and also adv...

Lisa G. Esayian is a lawyer recognized by Best Lawyers in the practice area of Litigation - Insurance. Lisa G. practices law in Chicago, Illinois Best Lawyers has recognized Lisa G. Esayian since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Lisa G. Esayian is held by other lawyers.

Bill has almost 40 years of experience in bankruptcy litigation. Bill is a calming and relaxed force while being a committed advocate for his clients. Bill is the senior member of Barack Ferrazzano’s Bankruptcy & Creditor Rights Group. In recent years Bill has focused his practice on representing secured debt holders and landlords in Chapter 11 cases and other insolvency proceedings. Bill has litigated a broad variety of cases in the bankruptcy courts, including stay relief, adequat...