Rubio v. State

Rubio v. State, 13-25-00499-CR, November 05, 2026.

On appeal from 399th District Court of Bexar County, Texas

Synopsis

A challenge to an expert’s qualifications under Texas Rule of Evidence 702 is not preserved merely because counsel makes an objection and conducts voir dire. Texas Rule of Appellate Procedure 33.1 requires an express or implicit adverse ruling—or, if the court refuses to rule, an objection to that refusal—before the issue may be reviewed on appeal.

Relevance to Family Law

Although Rubio is a criminal case, its preservation holding applies directly to Texas family-law litigation. Divorce and SAPCR proceedings frequently involve custody evaluators, mental-health professionals, forensic accountants, business-valuation experts, tracing experts, physicians, and other specialized witnesses. When counsel challenges an expert’s qualifications, methodology, or proposed testimony under Rule 702, the objection alone is insufficient: the record must also contain a ruling or an objection to the trial court’s refusal to rule.

That requirement is particularly important in bench trials, where evidentiary discussions can become informal and the court may state that it will “take the issue with the case,” “carry the objection,” or allow testimony “for now.” Unless the record ultimately reflects a ruling, appellate review may be unavailable.

Case Summary

Fact Summary

Dominick Xavier Rubio was prosecuted for aggravated assault of a public servant after a San Antonio police officer was shot during a pursuit. The State presented video recordings, physical evidence, testimony concerning the recovery of a shotgun and ammunition, and evidence that shotgun pellets struck the officer.

The State also called forensic scientist Mary Bowen to testify about a gunshot-residue evaluation performed on Rubio. Rubio objected that Bowen was not qualified to offer the proposed testimony and also asserted a relevance objection. The State then examined Bowen on voir dire concerning her training and qualifications, after which Rubio cross-examined her.

Bowen testified that testing revealed microscopic particles containing lead, barium, and antimony on Rubio’s right hand and lead and antimony on his left hand. She explained that the results indicated Rubio might have discharged a firearm, handled a discharged firearm, or been near a firearm when it was discharged.

The critical procedural fact was not the substance of that testimony but what was missing from the record: the trial court never ruled on Rubio’s Rule 702 objection. Rubio also did not object that the trial court had refused to rule. The jury convicted Rubio, and the trial court imposed a fifty-year sentence following his pleas of true to two enhancement allegations.

Issues Decided

The court addressed the following issues:

1. Whether the trial court abused its discretion by admitting certain exhibits over relevance and unfair-prejudice complaints under Texas Rules of Evidence 401 and 403.
2. Whether Rubio preserved his Rule 702 challenge to the forensic scientist’s qualifications when the trial court did not rule on his objection.
3. Whether the asserted evidentiary errors produced cumulative harm requiring reversal.

Rules Applied

• Texas Rule of Appellate Procedure 33.1(a): As a prerequisite to appellate review, the record generally must show a timely and sufficiently specific request, objection, or motion. The record must also show that the trial court ruled expressly or implicitly, or that the complaining party objected to the trial court’s refusal to rule.
• Texas Rule of Evidence 702: A witness qualified by knowledge, skill, experience, training, or education may offer expert testimony if the expert’s specialized knowledge will assist the trier of fact in understanding the evidence or determining a fact in issue.
• Texas Rule of Evidence 401: Evidence is relevant when it tends to make a consequential fact more or less probable.
• Texas Rule of Evidence 403: Relevant evidence may be excluded when its probative value is substantially outweighed by dangers such as unfair prejudice, confusion, misleading the jury, undue delay, or cumulative presentation.
• Abuse-of-discretion review: Evidentiary rulings are reviewed for abuse of discretion and ordinarily will be upheld if they fall within the zone of reasonable disagreement or are correct under any applicable legal theory. See Gonzalez v. State, 544 S.W.3d 363, 370 (Tex. Crim. App. 2018); Henley v. State, 493 S.W.3d 77, 82–83, 93 (Tex. Crim. App. 2016).
• Transfer precedent: Because the Texas Supreme Court transferred the appeal from the Fourth Court of Appeals, the Thirteenth Court was required to apply Fourth Court precedent to the extent it differed from the receiving court’s precedent. TEX. R. APP. P. 41.3.

Application

Rubio made a facially recognizable Rule 702 objection, asserting that Bowen was not qualified to give the proposed gunshot-residue testimony. The State responded by examining Bowen about her training and qualifications, and Rubio conducted his own examination. Those steps developed the evidentiary record, but they did not complete preservation.

The decisive omission was the absence of a ruling. The trial court did not expressly sustain or overrule the qualification objection. The appellate record also did not contain an implicit adverse ruling sufficient to satisfy Rule 33.1. Finally, Rubio did not advise the trial court that a ruling was required or object to the court’s failure or refusal to rule.

Accordingly, the court did not reach the merits of whether Bowen was qualified under Rule 702. The procedural default ended the appellate inquiry. The fact that the witness proceeded to testify did not, on this record, substitute for the ruling required by Rule 33.1.

The court also considered Rubio’s objections to physical and photographic exhibits under Rules 401 and 403. It noted that some complaints were not preserved because Rubio had not asserted the corresponding objection when the exhibits were offered. The preservation analysis thus extended beyond the expert issue: the appellate complaint had to match a timely trial-level objection, and that objection had to be resolved on the record.

Holding

The court held that Rubio did not preserve his Rule 702 challenge to the forensic scientist’s qualifications. A timely objection, followed by voir dire concerning the expert’s credentials, was not enough without an express or implicit adverse ruling or an objection to the trial court’s refusal to rule.

The court further concluded that the evidentiary complaints concerning certain exhibits did not establish reversible error. Some objections were not preserved under Rule 33.1, and the challenged evidence did not warrant reversal under the governing relevance and unfair-prejudice standards.

Because the asserted evidentiary issues did not establish preserved, reversible errors, Rubio’s cumulative-harm argument also failed. The court affirmed the judgment.

Practical Application

In family-law litigation, counsel should treat a Rule 702 hearing as a two-stage process: first develop the grounds for exclusion, and then obtain a ruling. Completing only the first stage does not preserve the issue.

For a custody evaluator or mental-health expert, counsel should identify whether the challenge concerns qualifications, reliability, fit, or the permissible scope of the opinion. After voir dire, counsel should renew the objection and request an express ruling on each ground.

For a business-valuation or tracing expert, the same principle applies when the expert lacks experience with the entity being valued, uses an allegedly unreliable methodology, relies on incomplete records, or offers an opinion beyond the disclosed subject matter. Even a detailed pretrial motion and extensive voir dire will not substitute for a ruling.

When the trial court conditionally admits expert testimony, carries the objection, or takes the issue under advisement, counsel should track the ruling through the close of evidence. If no ruling is forthcoming, counsel should respectfully request one and, if necessary, object on the record to the court’s refusal to rule.

Counsel also should separate distinct objections. A qualification objection under Rule 702 does not automatically preserve complaints about reliability, relevance, hearsay, disclosure deficiencies, unfair prejudice, or opinions exceeding the expert’s designation. Each ground should be stated with sufficient specificity and resolved on the record.

Checklists

Preserving a Rule 702 Challenge

• File a written motion to exclude or limit the expert when the issue can be anticipated before trial.
• Identify the precise Rule 702 ground: qualifications, reliability, fit, or scope.
• Obtain a pretrial hearing when feasible.
• Make or renew the objection when the expert is called or the challenged opinion is offered.
• Conduct voir dire sufficient to establish the factual basis for the objection.
• State the objection again after voir dire.
• Request an express ruling on each asserted ground.
• Confirm that the ruling appears in the reporter’s record or a signed written order.
• If the court refuses to rule, object expressly to that refusal.
• Renew the request if the court initially carries the objection or takes it under advisement.

Handling a Conditional or Deferred Ruling

• Ask whether the court is admitting the testimony conditionally or merely deferring a ruling.
• Clarify whether the objection remains pending.
• Request a definitive ruling before the close of evidence.
• Reurge the objection when the expert reaches the disputed opinion.
• Obtain a ruling before resting, if possible.
• Object to any refusal to rule.
• Ensure the final written order does not conflict with the oral ruling.

Building the Appellate Record

• Arrange for a court reporter at every evidentiary and Rule 702 hearing.
• Offer excluded reports, exhibits, curricula vitae, and supporting materials for record purposes.
• Make an offer of proof when evidence supporting the challenge is excluded.
• Identify each challenged opinion rather than objecting to the witness globally.
• Confirm that written motions and responses have been file-marked and included in the clerk’s record.
• Avoid relying on off-the-record bench conferences.
• State any ruling reached during an off-the-record discussion once proceedings resume on the record.
• Verify that the appellate complaint matches the objection made in the trial court.

Family-Law Expert Scenarios

• For custody evaluators, distinguish challenges to qualifications from challenges to investigative methods or underlying data.
• For mental-health professionals, identify whether the witness is qualified to diagnose, evaluate parenting capacity, or offer opinions concerning possession and access.
• For forensic accountants, challenge unsupported assumptions, incomplete source data, and opinions outside the witness’s expertise separately.
• For business-valuation experts, specify any objection to methodology, valuation date, discounts, normalization adjustments, or reliance materials.
• For tracing experts, identify gaps in source documents and distinguish admissibility objections from attacks on evidentiary weight.
• For rebuttal experts, preserve objections concerning untimely designation or opinions exceeding the permitted rebuttal scope.
• For remote expert testimony, obtain separate rulings on both the mode of appearance and the admissibility of the opinions.

Citation

Rubio v. State, No. 13-25-00499-CR (Tex. App.—Corpus Christi–Edinburg Nov. 5, 2026, no pet. h.) (mem. op.).

Full Opinion

Read the full opinion.

Family Law Crossover

The crossover rule is straightforward: Texas Rule of Appellate Procedure 33.1 requires both a sufficiently specific objection and a trial-court ruling. A Rule 702 objection may be thoroughly presented through a written motion, voir dire, exhibits, and argument, but the appellate complaint remains unpreserved unless the trial court rules expressly or implicitly. If the trial court refuses to rule, counsel must object to that refusal.

In a Texas divorce or SAPCR proceeding, this issue may arise when the court carries a challenge to a custody evaluator, allows a valuation expert to testify subject to a later determination, or hears a forensic accountant’s opinions while stating that admissibility will be addressed later. Counsel should not assume that allowing testimony to continue necessarily constitutes an implicit ruling. The safer procedure is to request a clear ruling, identify each ground being decided, and place any objection to the court’s refusal to rule squarely on the record.

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