The Puerto Rico Supreme Court issued a significant ruling on August 13, 2026, regarding the admissibility of expert testimony in civil cases. The court's decision affects how evidence is handled in negligence claims, particularly when parties fail to submit expert reports on time. This ruling is crucial for individuals and entities involved in similar legal disputes, as it clarifies the standards for presenting expert evidence in court.

The case, titled Ramos Martínez Y Otros v. Liberty De Puerto Rico Y Otros, was filed under docket number CC-2025-0720. It arose from a serious incident in Caguas, Puerto Rico, where a man named Luis Miguel Ramos Martínez was injured due to an explosion caused by electrical wires. The explosion led to a truck colliding with the wires, resulting in injuries to Ramos Martínez while he was selling lottery tickets.

On July 1, 2023, Ramos Martínez, along with his wife Zoraida Claudio Rodríguez, filed a lawsuit against the Puerto Rico Electric Power Authority (AEE), Liberty Communications of Puerto Rico, and Chubb Insurance Company, claiming damages for the injuries sustained. The couple sought compensation for medical expenses, pain, and suffering. The case progressed through the court system, leading to disputes over the admissibility of expert testimony.

The core issue in this case revolved around the AEE's late submission of an expert report. The AEE presented its expert report after the deadline, without requesting an extension or providing a valid reason for the delay. The trial court initially ruled to exclude this late evidence, stating that allowing it would be unfair to the other parties involved.

The AEE appealed this decision, arguing that the exclusion of their expert testimony would violate their right to a fair defense. The Appeals Court agreed, stating that the trial court had acted excessively by excluding the evidence without considering less severe sanctions. The Appeals Court noted that the discovery process was still ongoing when the report was submitted, and that there was no significant harm to the other parties.

In its ruling, the Supreme Court of Puerto Rico, led by Associate Justice Candelario López, agreed with the Appeals Court. The court stated, "the trial court erred in revoking the ruling of the First Instance Court and should have considered less severe sanctions instead of outright exclusion of the expert testimony." The court emphasized that the determination of whether expert testimony is essential should not be automatic but should consider the specific circumstances of each case.

The court further clarified that the exclusion of expert testimony should only occur in exceptional circumstances, particularly when a party's conduct shows a clear disregard for the rules or when there is no adequate justification for the delay. The ruling underscored the importance of allowing parties the opportunity to present their cases fully, including expert opinions that may be crucial to their arguments.

This decision has significant implications for future civil cases in Puerto Rico. It sets a precedent that emphasizes the need for courts to balance the enforcement of procedural rules with the rights of parties to present their evidence. The ruling indicates that courts should be cautious in imposing severe penalties, such as the exclusion of critical evidence, and should consider the context of each case before making such decisions.

Going forward, this ruling will impact how parties handle expert testimony in civil litigation. Lawyers and litigants must be aware of the deadlines for submitting expert reports and the potential consequences of failing to meet these deadlines. The court's decision serves as a reminder that while adherence to procedural rules is essential, courts must also ensure that all parties have a fair opportunity to present their cases.

As for the next steps, the case has been sent back to the trial court for further proceedings in line with the Supreme Court's ruling. This means that the AEE will have the opportunity to present its expert testimony, and the trial court will need to consider this evidence in the context of the ongoing case. Details about any potential appeals or related cases were not available in the court filing.