CROSSOVER: Untimely discovery objections are waived absent good cause—a useful warning for family-law records fights

In Re WhiteWater Midstream, LLC, WWM Operating, LLC, MXP Parent, LLC, and Matterhorn Express Pipeline, LLC, 14-26-00524-CV, June 18, 2026.

Original proceeding from 151st District Court, Harris County, Texas

Synopsis

The Fourteenth Court of Appeals denied mandamus relief because the relators did not timely assert written overbreadth and undue-burden objections before their discovery responses were due, and the record supported the trial court’s implied finding that they did not show good cause to excuse that waiver under Texas Rule of Civil Procedure 193.2(e). In that posture, the court held the trial court did not abuse its discretion by granting the motion to compel and denying reconsideration.

Relevance to Family Law

This is a commercial mandamus case, but the rule it applies is routine in family-law discovery. In divorce, SAPCR, and property-division litigation, parties often fight over bank records, business records, medical records, electronic data, and third-party materials; this opinion is a reminder that overbreadth and undue-burden complaints must be made in writing within the response deadline or they are waived unless the trial court excuses the waiver for good cause shown. For family-law litigators, the practical lesson is simple: if a request is too broad or too burdensome, preserve the objection on time or expect a motion to compel to gain traction.

Case Summary

Fact Summary

WhiteWater Midstream, LLC, WWM Operating, LLC, MXP Parent, LLC, and Matterhorn Express Pipeline, LLC filed a petition for writ of mandamus challenging two trial-court orders in cause number 2024-01973 pending in the 151st District Court of Harris County: a January 21, 2026 order granting the plaintiff’s motion to compel discovery and a May 12, 2026 order denying relators’ motion for reconsideration.

The court’s reasoning turned on a narrow procedural point. According to the record as described in the opinion, the relators did not timely object in writing to the challenged discovery requests on the grounds later raised in mandamus—specifically, overbreadth and undue burden—before their responses became due. The court also stated that the record supported the trial court’s implied finding that relators did not show good cause for failing to timely assert those objections.

Issues Decided

• Whether overbreadth and undue-burden objections to the challenged discovery requests were waived because they were not timely made in writing before the response deadline.
• Whether the record supported the trial court’s implied finding that relators did not show good cause to excuse waiver under Texas Rule of Civil Procedure 193.2(e).
• Whether, in light of that waiver and absence of good cause, the trial court abused its discretion by granting the motion to compel and denying reconsideration.
• Whether mandamus relief and temporary relief were available on that record.

Rules Applied

The court relied on the usual mandamus standard and on Rule 193.2(e):

• Mandamus is an extraordinary remedy that issues only to correct a clear abuse of discretion when there is no adequate remedy by appeal. In re Prudential Ins. Co. of Am., 148 S.W.3d 124, 135–38 (Tex. 2004) (orig. proceeding).
• Texas Rule of Civil Procedure 193.2(e) provides: “An objection that is not made within the time required, or that is obscured by numerous unfounded objections, is waived unless the court excuses the waiver for good cause shown.”
• The court also cited In re Gruss as Trustee of Gallagher Family Trust, No. 14-25-00098-CV, 2025 WL 2450496, at *2 (Tex. App.—Houston [14th Dist.] Aug. 26, 2025, orig. proceeding) (per curiam) (mem. op.), for the proposition noted in the opinion that a trial court abused its discretion in denying a motion to compel when the responding party neither timely objected in writing nor showed good cause for excusing waiver.

Application

The court applied Rule 193.2(e) directly and without embellishment. It first looked to timing and form: were the objections now being urged in mandamus made in writing before the response deadline? The court said the record indicated they were not. That mattered because the objections at issue were overbreadth and undue burden, and the court treated those as subject to Rule 193.2(e)’s waiver rule when not timely asserted.

From there, the analysis shifted to whether the waiver should have been excused. The opinion states that the record supported the trial court’s implied finding that relators did not show good cause for the failure to timely assert those objections. With no timely written objection and no good-cause showing the trial court was required to accept, the appellate court concluded the trial court acted within its discretion in compelling discovery responses and later refusing to reconsider that ruling.

Because the relators did not establish an abuse of discretion, the mandamus standard from Prudential was not met. On that basis, the court denied both the petition for writ of mandamus and the motion for temporary relief.

Holding

The Fourteenth Court of Appeals held that the relators’ overbreadth and undue-burden objections were not timely asserted in writing before the discovery responses became due, and the record supported the trial court’s implied finding that relators did not show good cause to excuse that waiver under Texas Rule of Civil Procedure 193.2(e). On that record, the trial court did not abuse its discretion by granting the plaintiff’s motion to compel discovery responses.

The court also held that the trial court did not abuse its discretion by denying relators’ motion for reconsideration. Because relators did not establish an abuse of discretion, the court denied mandamus relief and denied the motion for temporary relief.

Practical Application

For family-law litigators, this opinion is a clean preservation case. In practice, disputes over disproportional or expansive requests often arise in requests for production seeking years of financial records, communications, business documents, trust materials, metadata, or records held in multiple accounts or platforms. If the responding party believes those requests are overbroad or unduly burdensome, those objections need to be made in writing within the time for response, not saved for the motion-to-compel hearing.

The opinion is also useful when you are the movant. If the opposing party did not timely serve written objections on the specific grounds now being asserted, this case supports a straightforward Rule 193.2(e) waiver argument. And if the responding party asks the court to excuse waiver, the focus becomes whether good cause was shown. The opinion does not elaborate on what would constitute good cause, so practitioners should avoid assuming the court will supply it from the surrounding circumstances. Build the record expressly.

In family cases, that matters in several recurring settings:

• In divorce cases involving closely held business interests, discovery often targets accounting records, entity documents, and pipeline-style data pulls from multiple systems. If burden is the concern, say so in timely written objections.
• In custody cases involving medical, counseling, school, or electronic-communications records, scope objections should be preserved on time rather than raised for the first time in response to a motion to compel.
• In property tracing disputes, broad requests for historical bank, brokerage, or trust records can trigger legitimate overbreadth concerns, but those concerns still must be timely asserted in writing.

Checklists

Preserving Discovery Objections

• Calendar the response deadline the day the requests are served.
• Identify each request that may call for an overbreadth or undue-burden objection.
• Serve written objections within the response period.
• State the specific grounds you intend to rely on later; do not assume a general objection will preserve a later, more specific complaint.
• Confirm that the objections actually correspond to the challenged requests.

Building a Good-Cause Record if the Deadline Was Missed

• File a written response explaining why the objections were not timely asserted.
• Ask the trial court to excuse waiver for good cause shown under Rule 193.2(e).
• Offer evidence or argument directed to good cause rather than only to the merits of the underlying objection.
• Obtain a ruling, or at minimum a record showing the request to excuse waiver was presented.
• If the trial court makes no express finding, remember the appellate court may view the ruling through an implied-finding lens.

Moving to Compel When Objections Were Late

• Compare the discovery requests, the response deadline, and the date of the written objections.
• Point the court to Rule 193.2(e)’s waiver language.
• Emphasize whether the specific grounds now urged were absent from the timely written response.
• Address any asserted good-cause explanation directly.
• Request an order compelling responses if waiver is not excused.

Family-Law Use Cases

• Review financial-record requests in divorce cases for timing-sensitive objections.
• Review electronic-data and communications requests in custody cases for timely scope objections.
• Review business, partnership, or trust-document requests in property cases for burden objections that should be asserted before the due date.
• Train your team to treat preservation of discovery objections as a deadline issue, not just a hearing issue.

Citation

In re WhiteWater Midstream, LLC, WWM Operating, LLC, MXP Parent, LLC, and Matterhorn Express Pipeline, LLC, No. 14-26-00524-CV, memorandum opinion filed June 18, 2026 (Tex. App.—Houston [14th Dist.] orig. proceeding).

Full Opinion

Full Opinion

Family Law Crossover

The procedural mechanism here is Rule 193.2(e)’s waiver rule for untimely discovery objections. The opinion applies that rule to objections based on overbreadth and undue burden and confirms that, when those objections are not made in writing within the time for response, they are waived unless the trial court excuses the waiver for good cause shown. In a Texas family-law case, that same mechanism can arise in disputes over production of financial records, mental-health or medical records, electronically stored information, business records, and third-party materials. The crossover point is not the subject matter of the suit; it is the preservation rule. If the objection is not timely and written, the court may compel responses, and this opinion shows that mandamus will not be available absent a showing that the trial court abused its discretion.

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