In this case, there's a dispute over the registration of a piece of land in Occidental Mindoro, Philippines. Here's a summary of the key points: Background: Teodoro Abistado filed a petition for the registration of a 648-square meter land under Presidential Decree No. 1529. While the petition was ongoing, Teodoro Abistado passed away, and his heirs (represented by their aunt Josefa Abistado) were substituted as applicants. The trial court initially dismissed the petition, stating that it lacked jurisdiction because the notice of the initial hearing was not published in a newspaper of general circulation as required by law. Court of Appeals Ruling: The Court of Appeals disagreed with the trial court, stating that publication in the Official Gazette alone was enough to confer jurisdiction. They also argued that the failure to publish in a newspaper did not prejudice anyone's rights since other requirements like mailing and posting notices were fulfilled. Supreme Court Decision: The Supreme Court, however, ruled in favor of the petitioner (the Director of Lands) and disagreed with the Court of Appeals. They emphasized that the law uses the term "shall" when it comes to publication, indicating that it's a mandatory requirement. The Court clarified that land registration is an "in rem" proceeding, meaning it affects everyone's rights in the property, and publication is essential for constructive notice to all parties. While the law required publication in the Official Gazette, it also mandated publication in a newspaper of general circulation, which was equally important for due process. The Court recognized that the Official Gazette's circulation was limited and often delayed, making newspaper publication more effective in reaching interested parties. Ultimately, the failure to comply with the mandatory publication requirement meant that the land registration application had to be dismissed without prejudice, allowing the applicants to reapply in the future after meeting all legal requirements. In summary, the Supreme Court upheld the importance of newspaper publication as a mandatory requirement for land registration, emphasizing due process and the need to notify all interested parties. Therefore, the Court of Appeals' decision was reversed, and the land registration application was dismissed, allowing for possible reapplication in the future.