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What We Do

At SDM we commit our significant experience and resources for each and every client. For details regarding our practice in a specific area of law, select a practice area below to learn more.


SDM earned its reputation as one of the finest trial and appellate firms anywhere through decades of real courtroom experience in high-stakes disputes. Our deep roster of advocates serves our clients well not only in the courtroom but also at the negotiating table.

Oil, Gas & Energy

SDM is a leader in Texas oil, gas, and energy law. The firm’s foundation is built on representing generations of clients in cases before the courts, the Texas Railroad Commission, the Texas General Land Office, and University Lands.

State & Local Tax Disputes

SDM is among the state’s foremost authorities in resolving tax disputes with the Texas Comptroller. From litigation in administrative hearings or in state court to advice regarding tax saving strategies, we handle the full complement of state and local tax issues.

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News & Insights

Case Highlights

SDM Wins Complete Defense Verdict in Commercial Property Trial

A team of SDM lawyers including Casey Dobson, Sara Wilder Clark and John Ellis won…

Case Highlights

SDM obtains record setting verdict in bitcoin case

            First in-person jury trial in Travis County in over…

Case Highlights

SDM Secures Complete Defense Verdict in Jury Trial

On July 14, 2023, SDM secured a complete defense verdict for Covenant Management Systems, the…