United Blood Services, Petitioner v. Juan Longoria and Maria Longoria

Summary

The Texas Supreme Court reversed the Court of Appeals and affirmed the trial court’s grant of summary judgment for United Blood Services, holding that the trial court did not abuse its discretion in rejecting the Longorias’ expert testimony. The Court explained that the standards for qualifying expert testimony are the same in summary‑judgment and trial contexts and that the burden of proof lies with the offering party.