Adequate Appellate Remedy Bars Mandamus Review of New-Trial Order | In re Thomas (2026)

In re Aaron Nicholas Thomas, 09-26-00205-CV, June 11, 2026.

On appeal from County Court at Law No. 3 of Montgomery County, Texas

Synopsis

Mandamus will not lie to attack a nonjury order granting a new trial on a default protective order when the trial court still has plenary power and the relator can seek reconsideration and later raise the complaint on appeal from a final order. The Beaumont Court of Appeals held that the relator’s complaint about lack of notice of the new-trial hearing did not create the kind of extraordinary circumstance that makes an ordinary appellate remedy inadequate, particularly where the order was not void and the relator could still return to the trial court to seek reinstatement.

Relevance to Family Law

This opinion matters directly to Texas family-law litigators because default protective orders, temporary orders, enforcement proceedings, SAPCR settings, and post-default clean-up motions often unfold on compressed timelines and in overlapping dockets. In re Thomas is a reminder that when a trial court grants a new trial in a nonjury family-law matter during plenary power, appellate courts are unlikely to entertain mandamus merely because the movant prevailed on defective-service or due-process grounds, or because the opposing party complains of inadequate notice of the new-trial hearing. In practice, family lawyers should treat the trial court—not the court of appeals—as the primary battlefield while plenary power remains alive, especially in protective-order and custody-adjacent litigation where service, notice, and docket-management issues recur.

Case Summary

Fact Summary

The relator, Aaron Nicholas Thomas, sought mandamus relief after the trial court granted a new trial on a default protective order. The record described in the memorandum opinion showed a service problem from the outset. A constable first returned unserved a notice to appear for a March 25 hearing. On March 25, the trial court authorized substituted service by email or phone. Two days later, the constable again returned unserved the notice of application for protective order and order to appear for an April 1 hearing.

Thomas asserted that despite those service irregularities, the trial court signed a default protective order on April 1. On April 9, the real party in interest, Mariela Mendoza, moved to vacate the default protective order, alleging defective service, lack of jurisdiction, and denial of due process. She supported that motion with an affidavit stating that she had not received service of the application and had not received notice of any hearing before entry of the April 1 protective order. She also alleged that although her correct contact information existed in the parties’ custody case, the phone number and email address used in Thomas’s protective-order application were incorrect.

On April 24, while plenary power remained in effect, the trial court granted a new trial. Thomas then filed a mandamus petition, arguing in part that he himself had not received notice of the hearing on the motion for new trial because the matter was addressed during what was expected to be a hearing in the related custody case.

Issues Decided

• Whether mandamus relief is available to challenge a trial court’s order granting a new trial in a nonjury proceeding involving a default protective order when the trial court still retains plenary power.

• Whether the relator’s assertion that he lacked notice of the hearing on the motion for new trial constitutes an extraordinary circumstance making any appellate remedy inadequate.

• Whether the order granting new trial was void so as to justify mandamus review despite the availability of reconsideration in the trial court and later appeal.

Rules Applied

The court relied on the familiar mandamus standard: mandamus issues only to correct a clear abuse of discretion or a violation of a legal duty when there is no adequate remedy by appeal. The court cited In re Columbia Medical Center of Las Colinas, Subsidiary, L.P., 290 S.W.3d 204, 207 (Tex. 2009) (orig. proceeding), for the proposition that mandamus is not a substitute for ordinary appellate remedies.

The court also distinguished between jury and nonjury new-trial orders. While Texas law recognizes mandamus review in certain circumstances when a trial court improperly grants a new trial after a jury verdict, appellate courts ordinarily regard an appeal as adequate in nonjury cases when the new-trial order is signed during plenary power. For that point, the court cited:

• In re Hardy, No. 08-26-00095-CV, 2026 WL 1096282, at *2 (Tex. App.—El Paso Apr. 22, 2026, orig. proceeding) (mem. op.)

• In re Old American County Mutual Fire Insurance Co., No. 13-13-00644-CV, 2014 WL 1633098, at *11 (Tex. App.—Corpus Christi–Edinburg Apr. 23, 2014, orig. proceeding) (mem. op.)

Finally, the court invoked Texas Rule of Appellate Procedure 52.8(a), which authorizes denial of mandamus relief when the relator fails to establish entitlement to the writ, and Rule 52.10 with respect to temporary relief.

Application

The court’s analysis was straightforward and practical. It began from the premise that this was a nonjury proceeding and that the order under attack was an order granting a new trial entered while the trial court still had plenary power. That framing did most of the work. Once the court placed the case in the ordinary nonjury/plenary-power category, the presumption was that appeal remained adequate.

Thomas attempted to overcome that presumption by arguing that he had no notice of the hearing on the motion for new trial. But the court did not treat that complaint as enough, standing alone, to create an extraordinary circumstance justifying immediate mandamus intervention. Instead, the court emphasized the remedies still available in the trial court. Because plenary power had not expired, Thomas could file a motion for reconsideration, request a hearing, and attempt to prove that Mendoza had in fact been properly served with the protective-order application and notice of the April 1 hearing. He could also ask the trial court to reinstate the default protective order. If unsuccessful, he could preserve error and challenge the ruling after a final order on appeal.

That reasoning is particularly instructive for family-law practitioners. The appellate court did not say the relator’s notice complaint lacked seriousness; it said the complaint did not render appellate remedies inadequate. The distinction matters. In family cases, lawyers often frame service and notice defects as due-process violations, hoping that characterization alone will open the door to extraordinary relief. Thomas shows that even when due-process language is in play, the decisive question remains whether the trial court can still correct the alleged error and whether the issue can be reviewed after final judgment. If the answer is yes, mandamus is usually a poor vehicle.

Holding

The court held that mandamus does not issue to review a nonjury order granting a new trial while the trial court retains plenary power when the relator can seek relief in the trial court and later complain on appeal from a final order. In this case, because Thomas could move for reconsideration and seek reinstatement of the default protective order, he had an adequate remedy other than mandamus.

The court further held that the relator’s complaint that he lacked notice of the hearing on the motion for new trial did not establish extraordinary circumstances making appeal inadequate. The opinion makes clear that the challenged order was not void, and absent a void order or some truly exceptional circumstance, the ordinary appellate process controls.

Practical Application

For family-law litigators, the strategic lesson is simple: when a trial court sets aside a default ruling in a nonjury matter during plenary power, immediate mandamus is rarely the best or even an available path. That is true not only in protective-order cases, but also in default divorce prove-ups, default SAPCR modifications, enforcement actions, turnover disputes, and post-judgment family proceedings typically tried to the bench.

Practitioners representing the party who obtained the default order should move quickly in the trial court rather than pivot reflexively to the court of appeals. If the new-trial ruling was entered without notice, build a record on that point immediately, but also set a motion to reconsider while plenary power remains active. Use that hearing to prove service, notice, docket settings, and any prejudice flowing from the court’s procedure. If the trial court adheres to its ruling, preserve the complaint for appeal from the final order rather than assuming mandamus will rescue the case.

For practitioners representing the party seeking to vacate a default protective order or other family-law default, Thomas reinforces the importance of developing a service-and-notice record early. Affidavits identifying incorrect contact information, nonreceipt, and due-process defects can be enough to persuade the trial court to reopen the matter. But the better practice remains to secure a clear hearing setting, ensure notice to all parties, and avoid procedural irregularities that might complicate the downstream record.

The case also highlights a recurring family-court dynamic: related matters may be heard in overlapping settings, such as a custody hearing that becomes the occasion for addressing a protective-order issue. That may be administratively efficient, but it creates risk. Counsel should insist on a record showing what was set, what was noticed, what was actually heard, and whether all parties had a meaningful opportunity to respond. Those details often determine whether a later complaint is merely preserved error for appeal or something more.

Checklists

When a Default Protective Order Is Set Aside

• Confirm the date the default order was signed and calculate the trial court’s plenary-power deadline.
• Obtain the signed new-trial order immediately.
• Request the reporter’s record from any hearing at which the court considered the motion to vacate or motion for new trial.
• Review the clerk’s record for the motion, notice of hearing, certificate of conference, certificate of service, and any supporting affidavits.
• Determine whether the order is merely erroneous or arguably void; mandamus prospects differ sharply.
• File a motion for reconsideration before plenary power expires.
• Request an evidentiary hearing and obtain a setting in writing.

Proving Service and Notice in Family Cases

• Gather all returns of service, including failed returns and substituted-service orders.
• Compare the service address, email, and phone number used in the challenged proceeding against contact information in the divorce, SAPCR, or prior protective-order file.
• Secure testimony or affidavits from the constable, process server, or custodian of records if service is contested.
• Introduce the substituted-service order and proof of compliance with its exact terms.
• Preserve screenshots, call logs, email transmission records, and metadata where electronic service is at issue.
• Be prepared to show not just attempted service, but compliance with the specific method authorized by the court.

Preserving Error When You Did Not Receive Notice of the New-Trial Hearing

• Object on the record at the first opportunity.
• File a written motion for reconsideration identifying the lack of notice with specificity.
• Request findings or a clarified record if the matter was taken up during a different hearing than originally set.
• Attach affidavits showing what notice was or was not received, when counsel learned of the hearing, and how the lack of notice affected the presentation.
• Request a court reporter for all subsequent hearings.
• Ensure the clerk’s record contains the notice deficiency and your request for relief.

Deciding Whether Mandamus Is Worth Filing

• Ask whether the trial court still has plenary power.
• Ask whether the challenged ruling arose in a jury or nonjury context.
• Evaluate whether the order is void rather than merely erroneous.
• Identify any truly extraordinary circumstance showing that appeal is inadequate.
• Consider whether the same relief can be sought more efficiently through reconsideration in the trial court.
• If mandamus is pursued, explain specifically why later appeal cannot cure the harm; do not rely on generalized due-process rhetoric.

Avoiding the Problem in the First Instance

• Verify all contact information independently before seeking substituted service.
• In protective-order cases tied to pending SAPCR or divorce litigation, cross-check addresses and electronic contact information across files.
• Give formal written notice of any hearing on a motion to vacate or for new trial, even if the court may address related matters at another setting.
• Do not assume a related custody hearing provides adequate notice that a protective-order default will be revisited.
• Create a clean record identifying the cause number, motion being heard, and parties present.
• Submit proposed orders that recite the basis for relief with enough specificity to support later review.

Citation

In re Aaron Nicholas Thomas, No. 09-26-00205-CV, 2026 WL ___ (Tex. App.—Beaumont June 11, 2026, orig. proceeding) (mem. op.).

Full Opinion

Read the full opinion here

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