See - Remedial Law: Stare Decisis... - The Lawyer's Post
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The doctrine of stare decisis is one of policy grounded on the necessity for securing certainty and stability of judicial decisions, thus:
Time and again, the Court has held that it is a very desirable and necessary judicial practice that when a court has laid down a principle of law as applicable to a certain state of facts, it will adhere to that principle and apply it to all future cases in which the facts are substantially the same. Stare decisis et non quieta movere. Stand by the decisions and disturb not what is settled. Stare decisis simply means that for the sake of certainty, a conclusion reached in one case should be applied to those that follow if the facts are substantially the same, even though the parties may be different. It proceeds from the first principle of justice that, absent any powerful countervailing considerations, like cases ought to be decided alike. Thus, where the same questions relating to the same event have been put forward by the parties similarly situated as in a previous case litigated and decided by a competent court, the rule of stare decisis is a bar to any attempt to relitigate the same [issue]. (italics supplied)”
See -
G.R. No. 188302, June 27, 2012, NANCY L. TY, PETITIONER, VS. BANCO FILIPINO SAVINGS AND MORTGAGE BANK, RESPONDENT.
