Andrew H. Perellis

Nader Boulos concentrates his practice on the preparation and trial of complex commercial cases involving a wide range of substantive issues, including insurance coverage, commercial litigation, environmental torts and product liability. He has served as lead counsel in significant actions in state and federal courts across the country, representing clients in diverse industries including aerospace, manufacturing, telecommunications, energy, consumer products and pharmaceuticals. In the insur...

Eleni Kouimelis is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Litigation - Environmental. Eleni, who practices law in Chicago, Illinois, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eleni is held by other top lawyers in the same geographic and legal practice area.

John Gatz is a patent attorney who concentrates his practice on patent prosecution, patent counseling and patent litigation. John has extensive experience in the life sciences and manufacturing industries. My focus Patent Prosecution/Counseling I prosecute patents and counsel clients in a number of mechanical- and chemical-related technologies including: biomechanical devices, chemical products and processes, sensor-dispensing instruments, analyte meters, test sensors, non-invasive processes,...

Daniel T. Ryan is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Daniel T., 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 Daniel T. is held by other top lawyers in the same geographic and legal practice area.

Known both as a gifted leader and a consummate team player, Joe Cancila is a highly regarded, experienced, and tenacious litigator who has dedicated his career to defending clients in complex commercial class actions. He is a creative strategist, thorough investigator, and effective communicator—all qualities that make him a worthy adversary in and out of the courtroom. And as the leader of many practice teams, he has mastered the art of working collaboratively with co-counsel to best a...

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...

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...

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

Marc H. Trachtenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law and Trademark Law. Marc H., 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 Marc H. is held by other top lawyers in the same geographic and legal practice area.

William J. Serritella, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. William J., 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 William J. is held by other top lawyers in the same geographic and legal practice area.