What happens to a mandamus petition when it becomes moot or is denied?
This question has been addressed in 5 Texas court opinions:
IN RE THANH VAN TRAN
COA05 — February 5, 2026
In In re Thanh Van Tran, the Relator sought a writ of mandamus to challenge a capias order issued by the 494th District Court of Collin County. The Dallas Court of Appeals denied the petition on procedural grounds, holding that the Relator failed to satisfy the "predicate-request requirement." Under Texas law, a party seeking the extraordinary remedy of mandamus must generally demonstrate that they first asked the trial court to correct the perceived error—such as by filing a motion to vacate the order—and that the trial court refused. Because the Relator failed to seek relief at the trial level first and did not prove that such a request would have been futile, the Court denied the petition without addressing the underlying merits of the capias order.
Litigation Takeaway
“You cannot bypass the trial court when seeking emergency appellate relief. Before filing a petition for writ of mandamus to challenge a capias or enforcement order, you must first file a motion to vacate or modify that order in the trial court to create a "refusal record" for the court of appeals.”
IN RE SOLARIS TRANSPORTATION, LLC, Solaris Oilfield Infrastructure, Inc., and Solaris Oilfield Site Services Operating, LLC
COA04 — January 28, 2026
After Solaris Transportation filed a petition for a writ of mandamus to challenge an invasive trial court order authorizing discovery into its net worth, the opposing parties attempted to moot the proceeding by filing a unilateral stipulation withdrawing the contested requests. The Fourth Court of Appeals denied the motion to dismiss, reasoning that a unilateral stipulation lacks the "enforceable assurances" required to render a case moot because it remains subject to the trial court's discretion. The court held that unless the withdrawal is backed by a binding Rule 11 agreement or a court order vacating the discovery with prejudice, the threat of recurring invasive discovery remains, and the appellate court retains jurisdiction to hear the mandamus.
Litigation Takeaway
“A party cannot escape appellate review of an invasive discovery order through a "tactical withdrawal" unless they provide a binding, enforceable guarantee—such as a Rule 11 agreement or a court order with prejudice—that the discovery dispute will not recur.”
In re 7-Eleven, Inc.
COA13 — February 19, 2026
In this case, a trial court failed to rule on a Rule 91a motion to dismiss "baseless claims" for several months following a hearing. The Relators sought mandamus relief to compel a ruling. The Court of Appeals analyzed Texas Rule of Civil Procedure 91a, noting that while its 45-day deadline for rulings is directory rather than jurisdictional, the rule's core purpose is the "early and speedy dismissal" of meritless litigation. The court found that because the motion was properly heard and the delay was objectively unreasonable, the trial court's inaction constituted an abuse of discretion. The court conditionally granted the writ of mandamus, ordering the trial court to issue a ruling on the motion.
Litigation Takeaway
“Trial courts cannot use a 'pocket veto' to avoid ruling on Rule 91a motions to dismiss. If a judge refuses to rule on a motion to dismiss baseless claims within a reasonable time after a hearing, mandamus is an available tool to force a decision and prune frivolous 'tort-crossover' claims from family law litigation.”
In re Adrian and Mary Zuniga
COA13 — February 6, 2026
Adrian and Mary Zuniga filed a petition for writ of mandamus seeking to compel a trial court to set their civil case for trial after the court removed it from the docket despite multiple announcements of readiness. While the petition was pending at the Thirteenth Court of Appeals, the trial court scheduled a trial date for April 2026. The appellate court analyzed whether the trial court was still 'refusing' to act and determined that because a trial date had been set, the Relators could no longer demonstrate a clear abuse of discretion or an entitlement to extraordinary relief. Consequently, the court held that the challenge was effectively mooted by the new trial setting and denied the petition.
Litigation Takeaway
“A trial court can effectively 'cure' its failure to act and moot a mandamus petition by simply setting a trial date—even one years in the future. To prevent this 'docket limbo,' practitioners should build a record that challenges the reasonableness of a distant setting as a de facto denial of access to the courts, rather than just challenging the absence of a date.”
In re Elizabeth Cavazos
COA05 — February 23, 2026
Relator Elizabeth Cavazos sought a writ of mandamus and an emergency stay after a Dallas trial court struck her trial exhibits and related testimony on the eve of trial. The Dallas Court of Appeals analyzed the petition under the newly amended Texas Rule of Appellate Procedure 52.3(k), which updated certification requirements in December 2025, and the established 'Prudential' standard for extraordinary relief. The court denied the petition, holding that the Relator's failure to include the mandatory certification language was a fatal procedural defect and, substantively, that the Relator failed to demonstrate that the evidentiary ruling lacked an adequate remedy by ordinary appeal.
Litigation Takeaway
“In mandamus practice, technical compliance is just as critical as substantive merit; using outdated templates that fail to incorporate the December 2025 TRAP 52.3(k) certification language will result in summary denial, even in emergency circumstances. Furthermore, remember that striking evidence is rarely a 'mandamus-able' event unless it effectively terminates a party's ability to present their case entirely.”