Matthew A. "Matt" Walker

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...

Peter S. Coorlas is a senior associate of the Chicago law firm Peck Ritchey, LLC . Peter was an Assistant State’s Attorney for Cook County for 30 years, serving in the Special Litigation and Municipal Litigation Sections of the Civil Actions Bureau. Although Peter served in various areas while at the State’s Attorneys Office, he has primarily represented the interests of Cook County in probate matters, spending much of his time on contested litigation, including will contests, con...

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...

Michael P. Kuppersmith is a partner in Holland & Knight's Chicago office. He concentrates his practice in the area of commercial real estate law, with an emphasis on the leasing, acquisition, development and disposition of office, retail, residential and industrial properties, corporate facilities work, real estate financings, including construction, bridge and permanent financings, securitized financings and multiproperty secured revolving credit facilities, workouts involving distressed...

Jonathan Marks helps clients — often large insurers — develop investigation, claims handling and litigation strategies to detect, prevent and deter fraud. As an Assistant US Attorney, Jonathan tried numerous federal jury trials and argued appeals before the US Court of Appeals. As a lawyer in private practice, Jonathan has handled hundreds of insurance fraud investigations and dozens of fraud litigation matters. At every stage of counseling, investigation, litigation and in court,...

William E. Ridgway is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Regulatory Enforcement (SEC, Telecom, Energy). William E., 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 William E. 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...

Laura Hoey is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Laura, 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 Laura is held by other top lawyers in the same geographic and legal practice area.

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

Ronald Safer manages complex, high-stakes cases with a focus in civil litigation. Ron has successfully represented companies and individuals in federal and state court involving matters such as commercial disputes, accounting fraud, tax fraud, anti-kickback violations, Foreign Corrupt Practices Act (FCPA), environmental violations, and securities fraud. He represents clients before the U.S. Department of Justice (DOJ), Securities and Exchange Commission (SEC), Financial Industry Regulatory Au...