Michael R. Casillas

Michael R. Casillas, Esq.
Senior Trial Attorney
Texas Bar No. 03967500
Board Certified in Criminal Law and Criminal Appellate Law (TBLS)
Michael R. Casillas is a Senior Trial Attorney at L and L Law Group, PLLC, bringing more than 30 years of experience handling complex, high-stakes criminal matters at both the state and federal levels. Licensed in Texas since 1991, Michael has built a distinguished career centered on criminal trial advocacy and appellate litigation.
He is Board Certified in both Criminal Law and Criminal Appellate Law by the Texas Board of Legal Specialization—a dual distinction achieved by only a small percentage of attorneys in Texas. This designation reflects advanced expertise, significant courtroom and appellate experience, and demonstrated mastery of criminal law through rigorous examination and peer review.
Michael earned his Juris Doctor from the University of Texas School of Law and developed his foundation within the criminal justice system, gaining practical insight into both trial and appellate practice. Over the course of his career, he has represented clients in a wide range of criminal matters and has litigated cases through trial and appeal, including appearances before the U.S. Court of Appeals for the Fifth Circuit and admission to practice before the United States Supreme Court.
His approach combines methodical case analysis with strategic challenges to the State’s evidence, crafting tailored defense strategies aimed at dismissals, favorable resolutions, or successful trial outcomes. His appellate background provides a critical advantage at the trial level, allowing him to identify and preserve key legal issues, strengthen the record, and position cases for potential appellate review.
As Senior Trial Attorney, Michael plays a leadership role within the firm, contributing to complex case strategy and mentoring trial attorneys to ensure consistency, preparation, and strong courtroom performance across the firm’s docket.

Credentials & Admissions

Bar Admission: Texas, 1991
Board Certifications:

Criminal Law — Texas Board of Legal Specialization
Criminal Appellate Law — Texas Board of Legal Specialization

Law School: University of Texas School of Law, Juris Doctor
Federal Admissions:

United States Supreme Court
U.S. Court of Appeals for the Fifth Circuit

Practice Focus
Complex criminal defense at the trial and appellate levels, including state and federal matters, case strategy development, and trial team mentorship.