Eric R. Pfanenstiel

Michael A. Warner, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management, Labor Law - Management and Litigation - Labor and Employment. Michael A., who practices law in Chicago, Illinois, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael A. is held by other top lawyers in the same geographic and legal practice area.

George C. Lombardi is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Litigation - Intellectual Property, Litigation - Patent and Patent Law. George C., who practices law in Chicago, Illinois, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which George C. is held by other top lawyers in the same geographic and legal practice area.

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

Sarah F. King is one of Chicago’s rising medical malpractice lawyers at the firm and one of the most hard-working, intelligent attorneys one can find. She works tirelessly to investigate and prepare complex medical malpractice cases to achieve justice for those who have been harmed by medical negligence. She works with dedication and tenacity to get to the bottom of what actually happened and what proper practices should have been used to prevent injuries related to medical care. It is ...

Sean G. Wieber is a top attorney recognized by Best Lawyers in the practice area(s) of Consumer Protection Law. Sean G., 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 Sean G. is held by other top lawyers in the same geographic and legal practice area.

Christopher Hotaling is a member of the Government Investigations & White Collar Defense practice group. After 16 years as a federal prosecutor at the U.S. Attorney’s Office in Chicago, Chris focuses his practice on representing entities and individuals in all types of government investigations, criminal prosecutions, and regulatory enforcement actions. A seasoned trial attorney, clients also come to Chris for their most significant complex commercial litigation. What do you focus o...

The Honorable Henry R. Simmons (Ret.) is Managing Partner at Clifford Law Offices. He joined the firm in 2014 coming from ADR Systems of America, one of the top mediation services in the country, where he served as a Senior Mediator and Arbitrator for three years. He also worked as a Special Master and Neutral Fact Finder for ADR Systems. His experience in personal injury and multi-party disputes serves him well in running the 20+ lawyer firm at Clifford Law Offices in Chicago. He is known th...

Thomas Y. Mandler is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Labor Law - Management. Thomas Y., 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 Thomas Y. is held by other top lawyers in the same geographic and legal practice area.

Jason focuses on complex disputes and transactions relating to software and networking technologies. He works with a variety of businesses—from startups to Fortune 500 companies—to aggressively resolve intellectual property (IP) matters. He has litigated copyright infringement, trade secret misappropriation, patent infringement, trademark infringement, breach of contract, and related claims. Jason has also represented clients in disputes pertaining to ownership of IPv4 address blo...

John S. Mrowiec is a founding partner in the firm of Conway & Mrowiec. Mr. Mrowiec represents project participants in arbitration, litigation, mediation, contract drafting and claim preparation. He has tried, arbitrated or mediated several complex cases throughout the United States, most recently, successfully represented a general contractor to recover a seven-figure claim on an urban school project in a multi-week arbitration against a earth retention subcontractor involving the cause o...