# In re Estate of Lopez Supreme Court of Texas, No. 24-0315 **In re Estate of Lopez, No. 24-0315 (Tex. Nov. 7, 2025). Holding: The trial court abused its discretion by admitting the former judge's expert testimony, which was within jurors' common knowledge, improperly opined on a legal presumption, and told the jury how she would rule as judge; the error was harmful, so a new trial is required.** Practice areas: trusts and estates, family law, civil procedure ## Key issues - A trial court abused its discretion by admitting a former family-court judge's expert testimony that the parties were informally married, because the informal-marriage elements are within ordinary jurors' understanding, so the testimony did not help the jury under Rule of Evidence 702, and it improperly opined on a legal presumption and said how she would rule as judge. - The error was harmful because the testimony was crucial to the only contested issue on conflicting evidence, was not cumulative, was deliberately offered and was emphasized, so the Court reversed and remanded for a new trial; it did not hold that former judges may never testify as experts. ## Factual History Guadalupe Lopez, Jr. applied for independent administration and an heirship determination after the death of his father, Guadalupe Lopez, Sr., and the county court declared Lopez Junior and his two siblings heirs of the estate (Opinion, PDF p. 2). Elvira Gonzalez then filed a petition for bill of review alleging that she was Lopez Senior's common-law wife and seeking a judgment declaring her an heir, and the trial court withheld ruling until a jury decided whether the two were informally married (Opinion, PDF p. 2). To prove the marriage, Gonzalez offered the videotaped deposition of Alicia York, a former district court judge, who told the jury over Lopez Junior's objections that Gonzalez "clearly . . . show[ed] that all three elements of common-law marriage existed" (Opinion, PDF pp. 2-3). The trial evidence on an agreement to marry conflicted: Gonzalez offered photos of Lopez Senior wearing a wedding ring, quinceañera invitations calling them "Mr. & Mrs. Lupe Lopez," and a tax form and warranty deed identifying them as married, while the record also showed no joint bank account, tax, employment, and insurance documents listing them as "single," and testimony that Lopez Senior called another woman his "fiancée" (Opinion, PDF p. 7). ## Procedural History The jury found that Lopez Senior and Gonzalez were married, and the trial court granted the bill of review and awarded Gonzalez a share of the estate (Opinion, PDF p. 3). The Fourth Court of Appeals in San Antonio affirmed without deciding whether admitting the testimony was error, holding any error harmless because the testimony was cumulative, articulated no improper legal concepts, was not emphasized, and the other evidence withstood a factual-sufficiency challenge (Opinion, PDF p. 3). Lopez Junior petitioned for review on May 20, 2024; the Court requested merits briefing, and decided the case per curiam on November 7, 2025, without oral argument (Opinion, PDF pp. 3, 10; Petition for Review (Guadalupe Lopez, Jr), PDF p. 11). ## Issues Presented Lopez Junior presents two issues: whether a retired family-law judge's testimony on legal standards and on whether the couple was informally married should have been excluded and its admission requires a new trial, and whether the statutory presumption of non-marriage applied because the couple stopped living together and no proceeding was brought within two years; the petition labeled the second issue unbriefed (Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 11; Petition for Review (Guadalupe Lopez, Jr), PDF p. 11). Gonzalez frames the issue as whether any error in admitting the testimony was harmful, given other evidence of the marriage, and whether the presumption required a separate jury question (Brief on the Merits (Elvira Gonzalez), PDF p. 10). The Court decided only whether admitting the testimony was error and whether it was harmful (Opinion, PDF pp. 2, 5-9). ## Standard(s) of Review The Court reviews a trial court's admission of evidence for abuse of discretion (Opinion, PDF p. 3). Erroneous admission of expert testimony is harmless unless the error probably caused rendition of an improper judgment, meaning it contributed in a substantial way to the adverse judgment, and the Court evaluates the entire case from voir dire to closing argument (Opinion, PDF p. 4). ## Legal Arguments **Whether the former judge's testimony was admissible.** **Petitioner (Lopez Junior):** Expert testimony is appropriate only when it helps the jury with specialized knowledge, but in informal-marriage cases the evidence is within the average juror's knowledge, an expert may not explain the law to the jury, and the jury should have been left to decide for itself and not instructed how to vote by someone clothed with judicial authority (Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 21). He also argues that York used evidence of cohabitation and holding out as evidence of an agreement to be married, contrary to *Russell* (Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 11). **Respondent (Gonzalez):** She does not significantly contest that admitting the testimony was erroneous, according to Lopez Junior's reply, and she argues that the testimony was at best cumulative of the other evidence of the marriage (Brief on the Merits (Elvira Gonzalez), PDF p. 23; Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 4). The Court observed that she offered no argument why specialized knowledge was needed to decide whether an informal marriage existed (Opinion, PDF p. 5). **Whether any error was harmful.** **Respondent (Gonzalez):** Even without York's testimony, the record proved every element of the informal marriage "by a comfortable margin," so any error was harmless; Lopez Junior must show that the judgment turns on the particular evidence admitted (Brief on the Merits (Elvira Gonzalez), PDF p. 23). She also argues that a rebuttable presumption merely assigns a burden of production and vanishes once rebutted, so no separate jury question was required (Brief on the Merits (Elvira Gonzalez), PDF p. 10). **Petitioner (Lopez Junior):** The testimony was the sole support for a key element of the claim, and nothing in the documentary evidence actually showed an agreement to be married, which cannot be inferred from cohabitation and holding out (Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 21; Brief on the Merits (Guadalupe Lopez, Jr), PDF p. 4). ## Stated Reasons the Court Should Take the Case The petition has no separate statement of reasons for review; its summary argued that expert testimony helps the jury only with specialized knowledge, which informal-marriage evidence does not require, and that York's testimony usurped the judge's role (Petition for Review (Guadalupe Lopez, Jr), PDF p. 18). Gonzalez responded that review should be denied because the court of appeals correctly found any error harmless without suggesting that an expert like York could testify in another case (Response to Petition (Elvira Gonzalez), PDF p. 7). ## Practice Area Tags trusts-and-estates, family-law, civil-procedure ## Procedural Posture/Vehicle Petition for review from the Fourth Court of Appeals after a jury trial on a bill of review; granted and decided per curiam without oral argument under Rule of Appellate Procedure 59.1 (Opinion, PDF pp. 1, 10). ## Amicus Involvement None. The docket shows no amicus filings. ## Holding The trial court abused its discretion by admitting the former judge's expert testimony, which was within jurors' common knowledge, improperly opined on a legal presumption, and told the jury how she would rule as judge; the error was harmful, so a new trial is required. The Court did not hold that former judges may never testify as experts (Opinion, PDF pp. 2, 5-9 & n.1). ## Court's Reasoning **Error.** Expert testimony helps the jury only if the expert's knowledge is beyond the average juror's, and a trial court should exclude it when the jury is equally competent to form an opinion or the matter is within common knowledge (Opinion, PDF pp. 3-4). The elements of an informal marriage under Family Code section 2.401(a)(2), an agreement to be married, living together as spouses, and representing to others that they were married, are not specialized or beyond an ordinary juror's understanding (Opinion, PDF p. 5). To the extent York offered anything specialized, it was impermissible testimony about the law, including at length about a Family Code presumption, which is the court's role and not the witness's, and her testimony served only to give "an official endorsement" of Gonzalez's position, with York stressing that she formed her opinions "wearing [her] judge's hat" (Opinion, PDF p. 6). The Court cautioned that former judges are not categorically barred from testifying as experts, for example on the reasonableness of attorney's fees, but that parties should avoid repeatedly touting the status (Opinion, PDF pp. 6-7 n.1). **Harm.** All the relevant factors pointed to harm (Opinion, PDF p. 7). York's testimony was crucial to the only contested issue, on which the evidence cut both ways, so the jury likely relied on her opinion (Opinion, PDF pp. 7-8). The testimony was not cumulative, because it gave her own spin on how to weigh competing evidence and she was the only expert on the issue (Opinion, PDF p. 8). Gonzalez's use of it was calculated, not inadvertent, and the testimony was emphasized by introducing York as a former family-law judge and keeping that role in view (Opinion, PDF p. 9). ## Disposition Without hearing oral argument, the Court granted the petition for review, reversed the court of appeals' judgment, and remanded to the trial court for a new trial (Opinion, PDF p. 10). ## Vote Breakdown Per curiam opinion of the Court; Justice Lehrmann did not participate in the decision (Opinion, PDF p. 1). --- Source: The SCOTX Report, https://scotxreport.com/cases/24-0315. AI-generated summary of the Court's opinion, orders and the parties' briefs, with pin cites to the page of each document; verify against the Court's own documents at search.txcourts.gov.