Paul A. Leonard, Jr.

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...

Bob Hayward – named a “Notable Gen X Leader” by Crain’s Chicago Business in 2021 and a “Trailblazer in the Midwest” by The American Lawyer in 2022 -- helps lead the team that has been awarded “Capital Markets Practice Group of the Year” numerous times by Law 360. Bob provides direct, thoughtful and practical advice to publicly-traded corporations — across all industries — and private equity funds and their portfolio companies in all ...

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

With more than 28 years of experience in infrastructure and energy transactions, Eddie Lowry is a trusted authority for clients in this dynamic and rapidly evolving sector. He advises developers, operators, and investors on the full economic cycle of data centers and data energy projects, including all aspects of development, operation, energy procurement, tax incentives, construction, acquisition, disposition, finance, land use, and leasing for this niche asset class. An integral part of the...

Seth Horvath focuses his practice on trial and appellate litigation in state and federal courts nationwide. He represents a wide variety of clients in complex commercial disputes across multiple industries. My focus My practice includes three main areas: Commercial Litigation My commercial litigation experience is wide-ranging. From single-witness administrative hearings to complex, multiparty trials to summary proceedings on issues of law, I represent clients in the real-estate, financial-se...

Tom Donovan advises on patent and trademark litigation and prosecution, unfair competition and trade secret litigation, as well as a variety of licensing-related matters. Regardless of the client or the complexity of the matter at hand, Tom provides his clients with the guidance they need, in a way they can understand and apply to their daily business operations. Tom also has significant negotiation and drafting experience with software licensing, as well as patent, trademark and copyright li...

Jeffrey P. Armstrong is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Jeffrey P., who practices law in Chicago, Illinois, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey P. is held by other top lawyers in the same geographic and legal practice area.

Bob Riley is a trial lawyer. He has tried a broad array of complex, high-stakes cases and has argued appeals in state and federal courts across the country. His practice focuses on product liability, mass torts, and environmental cases; class actions; and general commercial litigation. Bob’s appellate work has given rise to over forty reported decisions concerning trial consolidations, punitive damages, civil conspiracy, class certification, and constitutional interpretation. He litigat...

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.

A member of Winston’s Executive Committee and winner of Best Lawyers’ “Lawyer of the Year” honor for securities and capital markets work in Chicago, Bruce represents clients in a variety of securities and financial matters, advising major corporations on their M&A transactions, debt offerings and other key capital market strategies and governance matters. Please read more here: https://www.winston.com/en/who-we-are/professionals/toth-bruce-a.html