04/02/2020 E-Library - Information At Your Fingertips: Printer Friendly The 1987 Constitution mandates the State to "protect the rights of indigenous cultural communities to their ancestral lands" and that "Congress provide for the applicability of customary laws x x x in determining the ownership and extent of ancestral domain."[202] It is the recognition of the ICCs/IPs distinct rights of ownership over their ancestral domains and lands that breathes life into this constitutional mandate. B. The right of ownership and possession by the ICCs/IPs of their ancestral domains is a limited form of ownership and does not include the right to alienate the same. Registration under the Public Land Act and Land Registration Act recognizes the concept of ownership under the civil law. This ownership is based on adverse possession for a specified period, and harkens to Section 44 of the Public Land Act on administrative legalization (free patent) of imperfect or incomplete titles and Section 48 (b) and (c) of the same Act on the judicial confirmation of imperfect or incomplete titles. Thus: "Sec. 44. Any natural-born citizen of the Philippines who is not the owner of more than twenty-four hectares and who since July fourth, 1926 or prior thereto, has continuously occupied and cultivated, either by himself or through his predecessors-in-interest, a tract or tracts of agricultural public lands subject to disposition, or who shall have paid the real estate tax thereon while the same has not been occupied by any person shall be entitled, under the provisions of this chapter, to have a free patent issued to him for such tract or tracts of such land not to exceed twenty-four hectares. A member of the national cultural minorities who has continuously occupied and cultivated, either by himself or through his predecessors-in-interest, a tract or tracts of land, whether disposable or not since July 4, 1955, shall be entitled to the right granted in the preceding paragraph of this section: Provided, That at the time he files his free patent application he is not the owner of any real property secured or disposable under the provision of the Public Land Law.[203] x x x. "Sec. 48. The following described citizens of the Philippines, occupying lands of the public domain or claiming to own any such lands or an interest therein, but whose titles have not been perfected or completed, may apply to the Court of First Instance of the province where the land is located for confirmation of their claims and the issuance of a certificate of title therefor, under the Land Registration Act, to wit: (a) [perfection of Spanish titles] xxx. (b) Those who by themselves or through their predecessors-in-interest have been in open, continuous, exclusive, and notorious possession and occupation of agricultural lands of the public domain, under a bona fide elibrary.judiciary.gov.ph/thebookshelf/showdocsfriendly/1/36882 41/148