ATTY. RAINIER R. MAMANGUN LAW OFFICE | Pasig

About Us

REAL ESTATE & PROPERTY LAW

The Law Office of Atty. Rainier Mamangun was established in 2004 and has provided services to a multitude of clients, Filipinos and foreigners alike, in the areas of Property Purchase; Guidance in Investments on Real Properties in the Philippines; Transfer & Registration of Title; Expropriation; Due Diligence; Contract Drafting & Review; cases before the Human Settlements Adjudication Commission (formerly HLURB); and cases filed with the regular courts such as for Ejectment, Cancellation of Title, Reconstitution of Lost Title, Petition for Issuance of New Title, Reconveyance, Removal of Encumbrance, Cancellation of Adverse Claim, Breach of Contract, and Settlement of Estate, among others.

His Firm provides advisory, due diligence, and litigation services in real estate transactions and property concerns. Its services likewise cover the preparation and review of contracts, agreements, and instruments relating to the purchase and acquisition of real properties, including purchases made by foreign nationals when allowed by law. It also engages in negotiations with property developers or parties to a real estate transaction, deal with rescission and nullification of contracts, as well as pursue claims under the Maceda Law and other relevant legislation.

Its years of experience allow it to address its client’s concerns effectively and facilitate a cost-efficient and successful accomplishment of their objectives. The Firm’s lawyers, associates, paralegals, interns, and support staff are trained, skilled in their line of work, and dedicated to their craft. Embedded in the Firm’s culture is the genuine concern for the client's cause. Thus, the Firm renders tailor fit solutions to respond to the client’s specific needs. Given the pandemic and its impact on people's finances, the Firm also understands the need for reasonable and flexible rates while maintaining the quality of service that it provides.

CORPORATE LAW

His Firm has also been providing services to a multitude of clients in the areas of Company Formation, Corporate Services, Mergers & Acquisitions, Corporate Finance & Securities, Information Technology, Labor Relations & Employment, Litigation & Dispute Resolution, and Crisis Management.
For almost two decades, his Firm has represented the interests of various multinational companies in commercial and civil disputes. With its multidisciplinary team, his Firm provides corporate clients rapid crisis management services, including contingency and sustainability planning.

His Firm specializes in business and corporate law, contracts, securities, direct foreign investment, regulatory compliance, and data privacy. Its practice areas also include real estate and commercial litigation, including intra-corporate disputes and financial fraud. The Partners also serve as director and corporate secretary to several multinational and domestic firms, and represent the country’s top conglomerates across several industries, including real estate, food, and power.

FAMILY LAW

Atty. Rainier Mamangun's expertise in family law and domestic relations covers representation and advisory services in annulment, declaration of nullity of marriage, recognition of foreign divorce, child custody, spousal support and child support, adoption, and domestic abuse cases, among others. For almost two decades, he has worked on over 300 family law-related cases.

Prior to establishing the Firm in 2004, Atty. Rainier Mamangun was a lawyer for the Philippines’ Department of Foreign Affairs (DFA) where he worked on labor, civil, and criminal cases involving migrant workers and overseas Filipinos in distress in conjunction with the Office for Migrant Workers Affairs and the concerned Embassies and Consulates.

While at the DFA, he was also instrumental in the rescue of countless victims of human smuggling and trafficking in Asia and in saving Filipinos on death row in the Middle East. He spearheaded various missions to Malaysia, Indonesia, East Timor, Nepal, India and Saudi Arabia in pursuit of the interests of the Overseas Filipino Worker; undertook diplomatic representations with foreign governments; and also appeared before foreign courts such as the Riyadh Grand Court.

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