The Holy See vs. Hon. Eriberto U. Rosario, Jr.

A foreign state is immune from the jurisdiction of Philippine courts if the act giving rise to the suit is governmental in nature (jure imperii) rather than proprietary or commercial (jure gestionis). The acquisition and disposal of property for the purpose of maintaining a diplomatic mission constitutes a sovereign act, and the executive branch's recognition of immunity is a political question binding on the judiciary.

The dispute originated from a contract to sell three contiguous parcels of land in Parañaque, Metro Manila. The Holy See owned one lot (Lot 5-A), and the Philippine Realty Corporation (PRC) owned the other two. Through an agent, Msgr. Domingo A. Cirilos, Jr., the properties were sold to Ramon Licup, who later assigned his rights to private respondent Starbright Sales Enterprises, Inc. A disagreement arose over the responsibility to evict squatters occupying the lots. Subsequently, the Holy See and PRC sold the same properties to Tropicana Properties and Development Corporation, prompting Starbright to file a civil case for annulment of sale, specific performance, and damages against the Holy See, Msgr. Cirilos, PRC, and Tropicana.

• Nature of the Action: Private respondent Starbright Sales Enterprises, Inc. filed a complaint for annulment of sale, specific performance, and damages against the Holy See, Msgr. Domingo A. Cirilos, Jr., Philippine Realty Corporation (PRC), and Tropicana Properties and Development Corporation.
• The Underlying Transaction: On April 17, 1988, Msgr. Cirilos, acting as agent for the Holy See (owner of Lot 5-A) and PRC (owner of Lots 5-B and 5-D), agreed to sell the three lots to Ramon Licup for P1,240.00 per square meter. The sale was conditioned on the sellers clearing the lots of squatters. Licup paid P100,000.00 in earnest money and later assigned his rights to Starbright.
• The Dispute: A disagreement arose over who was responsible for evicting the squatters. Starbright demanded the sellers fulfill their obligation. Msgr. Cirilos returned the earnest money and demanded Starbright pay the original price in cash within seven days. Starbright sent the money back.
• The Subsequent Sale: On March 30, 1989, the Holy See and PRC sold the lots to Tropicana without notice to Starbright. Titles were transferred to Tropicana.
• The Holy See's Claim: The Holy See asserted that Lot 5-A was acquired by donation from the Archdiocese of Manila for use as the site of the Apostolic Nunciature (the Papal Nuncio's residence). It was sold only because squatter occupation made its intended diplomatic use impossible.
• Executive Certification: The Department of Foreign Affairs intervened, certifying that the Embassy of the Holy See is a duly accredited diplomatic mission exempt from local jurisdiction.

• Sovereign Immunity: Petitioner maintained that as a foreign sovereign state, it is immune from suit in Philippine courts. The trial court therefore lacked jurisdiction over its person.
• Nature of the Act: Petitioner argued that the acquisition and disposal of Lot 5-A were not commercial acts. The land was acquired for use as its diplomatic mission, and its sale was necessitated by the squatter problem, not for profit. Thus, the transaction was an act jure imperii.
• Executive Determination: Petitioner contended that the executive branch's determination of its immunity, through the Department of Foreign Affairs' certification, is a political question conclusive upon the courts.

• Restrictive Theory: Respondent countered that the doctrine of sovereign immunity is not absolute. By voluntarily entering into a commercial contract for the sale of land within the Philippines, the Holy See divested itself of its cloak of immunity.
• Commercial Activity: Respondent argued that the transaction was an act jure gestionis (a private, commercial act), as it involved a contract to sell real property, a regular course of business activity.
• Waiver: Respondent maintained that the Holy See, by participating in the real estate transaction, impliedly waived its immunity from suit.

• Sovereign Immunity: Whether the Holy See is immune from the jurisdiction of Philippine courts in this case.
• Nature of the Act: Whether the sale of Lot 5-A by the Holy See constitutes an act jure imperii (sovereign act) or an act jure gestionis (commercial act).
• Executive Role: Whether the certification by the Department of Foreign Affairs regarding the Holy See's diplomatic immunity is binding on the courts.

• Sovereign Immunity: The Holy See is immune from suit. The petition for certiorari was granted, and the complaint against it was dismissed.
• Nature of the Act: The sale was an act jure imperii. The property was acquired and held for the sovereign purpose of maintaining a diplomatic mission. Its disposal was not for profit but was incidental to that sovereign purpose, as it was prompted by the practical impossibility of using the land for its intended diplomatic function due to squatters. A mere contract with a private party is not the sole test; the nature and purpose of the act are controlling.
• Executive Role: The executive department's determination of immunity is conclusive. The Department of Foreign Affairs' formal certification that the Holy See's mission is exempt from local jurisdiction is a political question that the courts must respect to avoid embarrassing the executive in its conduct of foreign relations.

• Sovereign Immunity (Doctrine of Non-Suability) — A foreign state may not be sued in the courts of another state without its consent. The Philippines adheres to the restrictive theory of sovereign immunity, which distinguishes between acts jure imperii (sovereign or governmental acts) and acts jure gestionis (private, commercial, or proprietary acts). Immunity applies only to the former.
• Acts Jure Imperii vs. Acts Jure Gestionis — The test is not merely whether a state enters into a contract, but whether the state is engaged in the activity in the regular course of business. If the act is in pursuit of a sovereign activity, or an incident thereof, and is not undertaken for gain or profit, it is jure imperii. The acquisition of property for a diplomatic mission and its subsequent disposal due to impracticability are sovereign acts.
• Political Question Doctrine in Foreign Relations — The determination by the executive branch (specifically the Department of Foreign Affairs) that a foreign state or its instrumentality is entitled to sovereign or diplomatic immunity is a political question that is conclusive upon the courts. The judiciary will not second-guess this determination to avoid interfering with the executive's conduct of foreign policy.

• "The mere entering into a contract by a foreign state with a private party cannot be the ultimate test. Such an act can only be the start of the inquiry. The logical question is whether the foreign state is engaged in the activity in the regular course of business. If the foreign state is not engaged regularly in a business or trade, the particular act or transaction must then be tested by its nature."
• "The determination of the executive arm of government that a state or instrumentality is entitled to sovereign or diplomatic immunity is a political question that is conclusive upon the courts."
• "Where the plea of immunity is recognized and affirmed by the executive branch, it is the duty of the courts to accept this claim so as not to embarrass the executive arm of the government in conducting the country's foreign relations."

• United States of America v. Guinto, 182 SCRA 644 (1990) — Cited for the principle that a state is deemed to have impliedly waived its non-suability if it enters into a contract in its proprietary or private capacity, but not when the contract involves its sovereign or governmental capacity. Also cited to distinguish between commercial acts (like operating restaurants open to the public) and governmental acts.
• International Catholic Migration Commission v. Calleja, 190 SCRA 130 (1990) — Cited as an example where the Secretary of Foreign Affairs' letter directly informed a government agency of an entity's diplomatic immunity, and for the rule that the executive's determination of immunity is a political question conclusive on the courts.
• World Health Organization v. Aquino, 48 SCRA 242 (1972) — Cited for the practice of the Secretary of Foreign Affairs communicating a claim of immunity to the courts and for the principle that courts should accept the executive's claim to avoid embarrassing the government's foreign relations.

• Article II, Section 2, 1987 Constitution — Provides that the Philippines "adopts the generally accepted principles of international law as part of the law of the land." The Court invoked this to affirm that the principle of sovereign immunity is incorporated into Philippine law.
• Articles 20-22 and 31(a), 1961 Vienna Convention on Diplomatic Relations — Cited to support the right of a foreign sovereign to acquire property in a receiving state for its diplomatic mission and the immunity of a diplomatic envoy from civil actions relating to such immovable property. The Court reasoned that if an envoy enjoys such immunity, a fortiori the sovereign itself should also be immune.

Chief Justice Andres R. Narvasa, Justices Abdulwahid A. Bidin, Florenz D. Regalado, Davide, Jr., Romero, Bellosillo, Melo, Puno, Kapunan, and Mendoza. (Justice Padilla took no part. Justice Feliciano was on leave.)

N/A (The decision was unanimous among the participating justices.)