William P. Ryan

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

Jonathan Mincieli is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Jonathan, 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 Jonathan is held by other top lawyers in the same geographic and legal practice area.

Garret Leach is a nationally recognized first chair trial lawyer who focuses on patent and other intellectual property litigation. He is a registered patent attorney and has successfully led litigation teams in district courts throughout the country as well as at the International Trade Commission. He has also argued for his clients before the U.S. Court of Appeals for the Federal Circuit and the Patent Trial and Appeal Board. His appellate arguments include a successful argument in front of ...

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...

John Augustyn is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Patent Law. John, 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 is held by other top lawyers in the same geographic and legal practice area.

Lance Zinman, global chair of Katten's Financial Markets and Funds practice, provides comprehensive legal services to asset managers, proprietary trading firms and other participants in the financial markets in need of a single advisor to assist with all aspects of their business. His unique skill set combines a deep understanding of corporate, regulatory, intellectual property and tax law with broad knowledge of the securities and derivatives markets. Using his extensive experience with thes...

Michael E. Holden is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Michael E., 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 Michael E. is held by other top lawyers in the same geographic and legal practice area.

Bill Welke focuses his practice on the tax aspects of complex business transactions and entities, including: mergers, acquisitions, and leveraged buyouts; venture capital and other private equity investments; formation of private equity funds; joint ventures and partnerships; workouts and restructurings; tax contests and controversies. Described as having “encyclopedic knowledge of tax structuring strategies” and “adept at cross-border international tax planning in the conte...

Sarah Raisch is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Sarah, 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 Sarah is held by other top lawyers in the same geographic and legal practice area.

Commercial real estate investors trust Kenneth Jacobson to guide them through high-dollar transactions in all kinds of economic environments. He helps capital providers like real estate investment trusts (REITs), commercial banks, insurance companies and investment funds invest in commercial real estate through a world of different product types and investment structures. Thanks to a rigorous focus on issues that matter, Ken executes deals with maximum efficiency. Ken has a well-honed ability...