Climate litigation in Southeast Asia is developing through legal systems that differ sharply in constitutional text, standing doctrine, environmental procedure, and remedial technique. This article examines how rights-based climate claims can be translated into judicially manageable remedies through a comparative doctrinal analysis centered on Indonesia and the Philippines, with Malaysia and Singapore used as institutional comparators. The study codes constitutional provisions, environmental statutes, procedural rules, and leading judgments across six variables: rights basis, standing, causal framing, evidentiary pathway, remedial form, and post-judgment supervision. Indonesian doctrine combines Article 28H(1), Article 33(4), environmental legislation, and citizen-suit practice, while Philippine law couples the constitutional right to a balanced and healthful ecology with specialized remedies including the writ of kalikasan and continuing mandamus. The comparison shows that the principal regional constraint is not recognition of environmental interests but the conversion of diffuse climate harm into reviewable governmental duties and enforceable orders. The article proposes a calibrated remedial model linking the intensity of judicial relief to the specificity of the breached legal duty, evidentiary certainty, institutional competence, and the need for continuing supervision.
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