Patrick B. Mathis

Patrick B. Mathis is a founding shareholder at Mathis, Marifian & Richter, Ltd. in Belleville, Illinois. He focuses his practice on business law, banking, estate planning, taxation, corporate law, civil litigation, business sales and acquisitions, and tax matters. Mathis advises clients in Southern Illinois and the St. Louis Metropolitan area, helping individuals, businesses, and organizations address complex legal, financial, and planning concerns with practical guidance.

Mathis earned an LL.M. in Taxation, a J.D., and an M.B.A. from Washington University in St. Louis. He also received a B.A. in Chemistry from Saint Louis University. His education provides a strong foundation in legal analysis, business planning, finance, taxation, and problem solving. This background supports his ability to evaluate complex business transactions, tax disputes, estate planning concerns, and litigation matters requiring careful judgment and technical expertise.

Mathis has more than 40 years of experience providing legal counsel on business mergers, sales, and acquisitions; shareholder litigation; trusts and wills; probate; federal and state tax audits and appeals; Tax Court litigation; and criminal tax defense. He has represented clients in matters requiring business judgment, tax planning, estate administration, and dispute resolution. His work helps clients identify legal issues, manage risk, structure transactions, and pursue practical solutions.

Patrick B. Mathis is admitted to practice in Illinois and Missouri, as well as before the United States Supreme Court, the Seventh Circuit Court of Appeals, federal district courts, the United States Tax Court, and the United States Court of Federal Claims. He has been recognized by Illinois Leading Lawyers, Illinois Super Lawyers, and Who’s Who in American Law. Through professional leadership, legal writing, presentations, and community service, Mathis provides experienced and client-focused representation.

Law Office Affiliations

• Founding Shareholder, Mathis, Marifian & Richter, Ltd.
• Member, American Bar Association
• Member, Illinois State Bar Association
• Member, St. Clair County Bar Association
• Member, The Missouri Bar
• Member, American College of Trust and Estate Counsel

Licensed State

• Illinois
• Missouri

Education

• Washington University
  Master of Laws (LLM)
• Washington University
  Juris Doctor (JD)
• Washington University
  Master of Business Administration (MBA)
• Saint Louis University
  Bachelor of Arts (BA)

Awards & Badges