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Explore our core legal services, from corporate law and litigation to real estate, labor, and estate planning. We deliver focused legal solutions tailored to your needs - efficient, strategic, and driven by results.










The LMJA Law Firm provides a full range of legal services for any activity or venture, or any area of interest or concern in the Philippines. Guided by traditional values, but oriented towards present-day solutions, our Law Firm is composed of lawyers and advocates with diverse and extensive experience in all areas of Philippine law.
In the area of FAMILY LAW and domestic relations we provide 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, we have worked on over 300 family law-related cases.
In the area of REAL ESTATE & PROPERTY LAW, we provide services to a multitude of clients, both locals and foreigners, 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. We provide advisory, due diligence, and litigation services in real estate transactions and property concerns. Our 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. We also engage in negotiations with developers or other 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. Our years of experience permit us to address our client’s concerns effectively and facilitate a cost-efficient and successful accomplishment of their objectives.

Megan, a Junior Partner at LMJA, specializes in corporate law, commercial litigation, and estate planning. She's also a corporate secretary and represents top real estate developers.

Chiqui is a law graduate from the University of the Philippines and an award-winning writer. She gained experience at the U.P. Office of Legal Aid and advocates for women, children, and the LGBTQ+ community.

Admitted to the bar in 2022, Cyril has vast experience in corporate, criminal, and labor law. He has served as a legal manager, a New York firm associate, and a contract administrator for a multinational.

A JD and Magna Cum Laude business grad, Glesa brings nearly a decade of diverse legal and auditing experience. She is a skilled negotiator and passionate advocate for individual rights in civil and family law.

A Juris Doctor with a Tourism degree, Innah's legal skills were honed at the IBP. Her internship at the Bureau of Immigration gives her an edge in Immigration Law. She was previously a legal editor.

Established in 2004, the Firm is led by Rainier Mamangun, who has had more than 25 years of legal experience as a government lawyer and, later on, as a private law practitioner.

OUR OFFICES
Unit 2304, Antel Global Corporate Center, 3 Doña Julia Vargas Ave, Ortigas Center, Pasig, 1605 Metro Manila, Philippines
mycounsel@ymail.com© 2025 Mamangun Law Office. All rights reserved.