Case Title: Director of Lands v. Intermediate Appellate Court and Acme Plywood and Veneer Co., Inc. Citation: G.R. No. 73002, December 29, 1986

SignificanceThis case is a landmark ruling in Philippine Land Law. It clarifies the conversion of public land into private land through possession and defines the scope of constitutional restrictions on corporate land ownership. It is a foundational case on confirmation of imperfect title and the interaction between the Regalian Doctrine and private property rights.