Jason N. Sposeep

Tom is an intellectual property attorney who regularly counsels clients on patent and trademark prosecution, IP litigation, and post-grant patent challenges before the Patent Trial and Appeal Board (PTAB). His practice reflects a balance of strategic portfolio development and dispute-driven risk assessment, uniquely blending transactional work with intellectual property litigation. This integrated approach enables him to advise clients with a practical, end‑to‑end perspective on how patents a...

Robert (Rudy) Radasevich has practiced for the past three decades in the firm’s Financial Restructuring & Bankruptcy and Commercial Litigation departments. As a litigator, Rudy represents the firm’s business clients as plaintiffs and defendants in complex commercial disputes before state and federal courts, arbitration panels and appellate courts throughout the country. His comprehensive litigation practice spans the gamut of high-exposure business disputes, including breach o...

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.

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

As a partner in the Intellectual Property practice group, Jeff focuses his work on patent litigation and strategic counseling related to pharmaceutical, chemical, biotechnology, electrical engineering, agricultural and food products. A registered patent attorney with four decades of experience, Jeff has successfully represented both patent owners and patent challengers through all stages of federal litigation and appeals. A significant portion of Jeff’s practice includes advising pharma...

Michael (Mike) J. Sorrow focuses his practice on tax, estate planning, family business and trust and estate administration matters. Mike regularly advises wealthy individuals and families on all aspects of wealth and tax planning matters. In addition, Mike works extensively with families that control significant public and private businesses, counseling them and their family offices on matters relating to effective tax planning, succession and governance planning and the intra-family issues t...

Steve is a partner in the firm’s Litigation Department, where he represents clients in complex civil litigation matters before state and federal courts throughout the country. He has considerable experience with commercial disputes, constitutional challenges, statutory interpretation issues, and defamation and invasion of privacy suits. He is skilled at representing municipalities in cases involving so-called “locally undesirable land uses” such as airports, music amphitheat...

Neil T. Kawashima has a diverse practice, representing wealthy individuals and families on matters related to estate and gift planning, business succession and governance, and estate and trust administration. Neil’s clients include owners of privately-held businesses, beneficiaries of long-term trusts, fiduciaries and entrepreneurs. Neil has advised his clients regarding traditional and novel uses of trusts, wealth transfer strategies, business control mechanisms such as voting trusts a...

Jonathan Merel is an experienced attorney and litigator who advocates for his clients in all family law proceedings, including settlement negotiations and trials. Jonathan founded The Law Offices of Jonathan Merel, P.C. in early 2009. Prior to starting the firm, Jonathan worked at another Chicago-based family law practice for many years. Jonathan has grown his firm to include 4 other attorneys, an excellent staff and an additional office location in the suburbs. Jonathan has a great deal of e...

John F. Kinney is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Antitrust. John F., who practices law in Chicago, Illinois, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John F. is held by other top lawyers in the same geographic and legal practice area.