Michael Willis founded this firm with his brother, Shaun Patrick Willis. Their father, Hon. Frank D. Willis, is the probate judge for Van Buren County, and Michael proudly carries on the family tradition in estate law by focusing his practice in estate planning, probate and estate and trust administration, and estate litigation. He also has a concentrated practice in corporate law and business succession planning, along with real estate development and transactions. Michael is registered as a Certified Public Accountant in the State of Illinois, and is licensed to practice law in both Florida and Michigan. Michael received his J.D. from the University of Michigan Law School. He graduated magna cum laude with a B.A. from the University of Notre Dame. Before forming Willis Law, Michael worked for Varnum, Riddering, Schmidt & Howlett LLP and Kerr, Russell, Weber, PLC.

Shaun Willis, along with his brother Michael, is a co-founder and Partner of Willis Law. Willis Law has offices in Kalamazoo, Grand Rapids, and Paw Paw. For more than 14 years, Mr. Willis has focused on assisting clients in litigation, with emphasis on business, real estate, and construction litigation. He is admitted to practice in the State Courts of Michigan, Federal Courts in the Eastern and Western District of Michigan, and the Michigan State Supreme Court. Before the formation of Willis Law, he was sole practitioner of The Law Office of Shaun Patrick Willis, worked in the Kalamazoo County Office of the Prosecuting Attorney and at Howard & Howard Attorneys, PC. Shaun received a J.D. from Thomas Cooley Law School. He graduated with a B.S. in Aviation Flight Science from Western Michigan University. He is a licensed commercial pilot with a multi-engine rating, avid hunter, and teaches the legal portion of CCW classes. He and his wife, Corrina Maria Willis, are involved in the Kalamazoo community, attend Valley Family Church, and Corrina is Past President of the Lawyers Auxiliary Board. They have three daughters, Maria, Francesca, and Lucy and three sons, Patrick, Christopher, and Walter. Willis Law dedicates its practice to God, the Lord Jesus Christ, and the founders' fallen brother, Corporal Christopher Kelly Willis.