What is the summary of In re Estate of Guadalupe Lopez, Sr., Deceased?

The Texas Supreme Court held that admitting expert testimony on the existence of an informal (common-law) marriage was an abuse of discretion where the issue was within the ordinary juror’s common knowledge, and that the error was harmful.

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In re Estate of Guadalupe Lopez, Sr., Deceased

Supreme Court of Texas — November 7, 2025

Litigation Takeaway

"There are limits on expert testimony about legal status conclusions that jurors can resolve from ordinary facts. The opinion cautions against using former judges or similarly influential witnesses to opine on legal presumptions or ultimate marital-status questions"

Analysis by Lauren S. Harris

Lead Litigation Attorney

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