Operating a private law practice for more than three decades in Houston, Texas, Stanley Duane Wilkinson specializes in criminal defense, personal injury, family law, and municipal defense administrative law, including legal actions related to traffic tickets. Additionally, Stanley Duane Wilkinson offers services for plaintiffs and defendants in civil litigation cases. To better serve his clients, he holds membership with multiple industry organizations, including the American Bar Association, Houston Bar Association, Municipal Justice Bar Association, and Texas Trial Lawyers Association. He is also licensed to practice law in the Southern District of Texas Chapter through the Federal Bar Association.

To prepare for his career, he attended the South Texas College of Law, where he earned a doctor of jurisprudence in 1985. As a student, he completed specialized courses in real estate finance, insurance and patent law, federal tax, and worker's compensation. Additionally, he held membership with the Phi Alpha Delta Law Fraternity, which is the largest law fraternity in the world.