James C. Williams

Ashley Margason is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Ashley, 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 Ashley is held by other top lawyers in the same geographic and legal practice area.

Peter Sullivan practices in trial and litigation of complex professional liability and commercial litigation cases, including actions against accountants and attorneys, director and officer liability and coverage cases, consumer class action cases and breach of contract cases. Mr. Sullivan also focuses on lender liability suits, real estate litigation, UCC litigation, state and federal securities law claims, RICO claims, business tort litigation and common law fraud actions.

Ryan Schultz is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. Ryan, 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 Ryan is held by other top lawyers in the same geographic and legal practice area.

Leonidas L. Bezanis II , a partner at Beermann LLP , brings extensive experience in litigation, mediation, and alternative dispute resolution to help clients navigate a wide range of family law matters. Whether representing high-net-worth individuals, high-profile clients, or families facing life’s challenges, Mr. Bezanis approaches each case with the same dedication, ensuring that every client feels understood and supported. His ability to handle complex financial estates and intricate...

Leslie Smith is a litigation partner and was a long-time member of the Firm’s Global Management Committee. She concentrates her practice in the areas of antitrust, class action, and consumer fraud litigation. The Legal 500 stated that Leslie has a ‘good strategic approach’, ‘demonstrates personal commitment to the company’s cause’ and ‘acquires and deploys the best firm talent appropriately’. Leslie is highlighted as “2017 Life Science Sta...

Thomas J. Wimbiscus, a shareholder with McAndrews, has more than thirty years of experience and practices in all areas of intellectual property litigation, with a special emphasis on patent and trademark litigation. He has appeared in over 100 litigations and over 100 inter partes reviews (IPRs). He was named one of the 10 most active IPR practitioners in the U.S. for patent owners. (Patexia 2018.) Tom was named as one of the world’s leading patent professionals by IAM Patent 1000 in 20...

Tom is a Shareholder and Chairs the Patents and Intellectual Property Sections. An experienced attorney most active in patent prosecution, portfolio management and providing opinions of counsel, Tom drafts and prosecutes U.S. and foreign patent applications; renders non-infringement, validity, patentability and inventorship opinions; drafts and interprets license, indemnification, employment and non-complete agreements; prepares and prosecutes trademark and copyright registrations; and counse...

Brian Sieve, a Fellow in the American College of Trial Lawyers, is an experienced trial lawyer. Praised for his ability to communicate with a jury and to present complex issues clearly and simply, he has tried more than thirty-five jury trials, bench trials, arbitrations, injunction proceedings, Markman hearings and evidentiary hearings. Brian was distinguished as one of The Best Lawyers in America, U.S. News and World Report, Best Lawyers® for 2013–2023 in the field of commercial l...

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

For more than 30 years, Walter Weinberg has been advising private equity funds and other corporate clients as well as private equity professionals and executives. He represents sponsors in forming private equity and other funds as well as institutional investors and high-net-worth families who invest in this asset class. His years of experience and sound judgment in guiding clients through mergers and acquisitions (M&A), joint ventures, financings and other transactions allow him to offer...