Broad experience. Regional focus.

Belleville 618.234.9800
Edwardsville 618.656.2244

William J. Niehoff

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Legal Assistant: Liz Horstmeyer


MMR Bill Niehoff web

William J. (Bill) Niehoff is a shareholder at Mathis, Marifian & Richter (MM&R), who focuses his practice in commercial and civil litigation, personal injury litigation, business and commercial law, construction law, energy and regulatory law and employment and administrative law.

Bill has more than 27 years experience representing a wide range of clients in matters involving significant civil litigation, class actions, product liability, personal injury, energy law, employment agreements, wrongful discharge and discrimination. Since joining MM&R in June 2000, he has, in cooperation with others at the firm, successfully returned commercial and civil settlements and judgments for MM&R clients totaling in excess of $50 million. He has represented both plaintiffs and defendants in state and federal courts in a wide range of jurisdictions, including Illinois, Missouri, Texas, Mississippi, Louisiana and West Virginia. He has also represented clients before the Missouri Public Service Commission, the Illinois Commerce Commission, the Federal Energy Regulatory Commission, the Securities and Exchange Commission and in the United States Tax Court. Bill has represented automobile and other national and international manufacturers; hospitals and physicians; railroads and utilities; large and small business owners; and individuals. Over the course of his career, he has also assisted in the reorganization and formation of holding companies for several of the largest Midwestern energy companies, and in developing and implementing regulatory compliance programs for energy companies.

Bill has been named as a Leading Lawyer by his peers in a statewide survey in the areas of Personal Injury and Commercial Litigation.

Bill is also the author of Chapter 7 on product defect in Illinois Products Liability, published by Lawyers Cooperative Publishing.

Community Involvement
Bill’s commitment to his community can be seen in his role as a leader and volunteer in the local youth sports arena. He served as coach or manager for a number of soccer and fast-pitch softball teams and as the codirector of a youth soccer program.

Professional Associations and Memberships

  • American Bar Association, Member
  • Illinois State Bar Association, Member
  • The Missouri Bar, Member
  • St. Clair County Bar Association, Member
  • Bar Association of Metropolitan St. Louis, Member