Sydney Wisniewski

Jill B. Berkeley formerly chaired the firm’s Insurance Policyholder practice group and remains an active member of the group. She represents policyholders and claimants in insurance coverage disputes involving toxic torts and hazardous wastes, environmental pollution, construction, products liability, intellectual property, first-party property, business interruption and excess liability matters. In addition to her robust litigation practice, Jill provides counsel on clients’ deve...

Jason R. Schulze is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Jason R., who practices law in Chicago, Illinois, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jason R. is held by other top lawyers in the same geographic and legal practice area.

Lowell D. Yoder focuses his practice on cross-border mergers and acquisitions, global tax planning and international tax controversies, representing high-tech, pharmaceutical, e-commerce, financial, consumer and industrial companies. He advises on tax-efficient structuring of cross-border acquisitions, dispositions, financings, internal reorganizations and joint ventures, as well as tax-beneficial planning for intangible holding companies, global supply chains and multi-jurisdictional service...

John C. Kocoras is a partner in McDermott Will & Emery LLP’s White Collar & Securities Defense practice group and is based in the Firm’s Chicago office. John focuses his practice on internal investigations, white-collar criminal defense matters including Foreign Corrupt Practices Act (FCPA) cases and complex litigation. Prior to joining McDermott Will & Emery, John served as Managing Director and Regional Counsel of the global investigations company Kroll, where he dir...

Mark Hagedorn advises on a wide variety of intellectual property matters, including patent, trademark and copyright solicitation and IP litigation, licensing and counseling. Appreciated for his honesty and practical legal advice, Mark consistently delivers utilitarian solutions that help his clients resolve disputes and litigation efficiently and economically. Mark offers broad experience in virtually all phases of IP counseling and litigation. He understands and has represented clients invol...

Josh is a first-chair trial lawyer and counselor. Many of the world’s highest profile companies trust him to resolve disputes in ways that align with their business goals. Clients also seek Josh out before disputes arise, helping them to calibrate business strategies to reduce the risk of litigation or maximize leverage from potential claims. Many of Josh’s clients are in the retail, manufacturing, and real estate development industries. He has championed their rights in a host of...

Matthew counsels clients on invention harvesting, patent and trademark portfolio management, intellectual property acquisition, domestic and international patent and trademark prosecution, and intellectual property transactions. He has prepared and prosecuted more than 750 patent applications and appeals on behalf of clients, primarily in the mechanical, electrical, electromechanical and software arts. Additionally, Matthew conducts IP asset management for his clients, having extensive experi...

Chris P. Kallos is a top attorney recognized by Best Lawyers in the practice area(s) of Private Funds / Hedge Funds Law. Chris P., 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 Chris P. is held by other top lawyers in the same geographic and legal practice area.

Edward J. Kus is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law and Municipal Law. Edward J., who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Edward J. is held by other top lawyers in the same geographic and legal practice area.

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