Gang Chen

Richard R. Winter is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Richard R., 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 Richard R. is held by other top lawyers in the same geographic and legal practice area.

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

Troy A. Groetken, Shareholder Email: tgroetken@taftlaw.com Tel. (312) 775-8259 Practice Areas: Global Intellectual Property Portfolio Analysis, Counseling & Management; Complex Chemical, Small-molecule Pharmaceutical, and Biotechnological Patent Prosecution; Intellectual Property Acquisition, Divestiture, and Licensing; Clearance, Freedom to Operate & Invalidity Opinions; Trademark Prosecution; Antitrust; Intellectual Property Landscaping Education: Drake University, College of Pharma...

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

As a commercial litigator and counselor with more than 20 years of experience, Matt brings a creative, pragmatic, and efficient approach to helping clients resolve complex legal and business problems. Matt is co-chair of the firm’s Litigation Group. He has significant, first-chair trial experience in a wide variety of business disputes. He regularly represents clients in matters involving breach of contract, fraud, breach of fiduciary duty, non-competes, and post-closing disputes. Matt ...

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.

Robert B. Ellis P.C. is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Robert B., 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 Robert B. is held by other top lawyers in the same geographic and legal practice area.

Allan Muchin co-founded the law firm that bears his name. What began in 1974 as the 24-attorney firm Katten Muchin Zavis has today become Katten Muchin Rosenman LLP, with more than 600 attorneys worldwide. Allan began his legal career as a trial attorney for the Internal Revenue Service. When he helped launch Katten Muchin Zavis, he and his partners set out to create a law firm that was innovative, specialized and entrepreneurial. His practice concentrated on advising corporations, partnershi...

Susan L. Novosad, Of Counsel, is a highly respected personal injury and wrongful death attorney in Chicago. With nearly 40 years of legal experience, she is known for her compassionate advocacy and relentless pursuit of justice for victims of medical malpractice, nursing home abuse, and catastrophic personal injury cases . Susan is also recognized for her exceptional negotiation skills, helping clients secure fair settlements while resolving disputes effectively. Susan’s legal career is...

Barry A. Hartstein has earned a national reputation for a career that includes more than 30 years of counseling and representing employers in a broad range of labor and employment matters. He is a frequent writer, commentator and lecturer on workplace issues. He also has extensive experience as a litigator and has defended employers nationwide in individual and class action claims and wage and hour collective actions. He has particular expertise dealing with the EEOC on both a local and natio...