YOUR advisers

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 Atty. Rainier Mamangun  is a Founding Partner of the LMJA  Law Office.  

His expertise in Family Law and Real Estate Law covers representation and advisory services in annulment, declaration of nullity of marriage, recognition of foreign divorce, child custody, spousal and child support, adoption, and domestic abuse cases, among others. For almost two decades, he has worked on over 300 family law-related cases.
He has also provided 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;  cases filed with the regular courts such as for ejectment,  reconstitution of lost title,  issuance of new title, reconveyance,  cancellation of adverse claim, breach of contract, and settlement of estate, among others.  His years of experience allow him to address his clients' concerns effectively and facilitate a cost-efficient and successful accomplishment of their objectives.   

 In 2013, Atty. Mamangun was the recipient of the Certificate of Selection in the area of Family Law from Legal’s Finest -- a premier guide to the world’s leading attorneys based in the United Kingdom.  In 2020,  he was the awarded the Certificate of Excellence from Advisory Excellence, a London-based organization which profiles the best legal advisers around the globe, for his outstanding performance in the area of Family Law.  In 2021, he became one of the select few to be invited to the prestigious  Asociacion Europea de Abogados,   the largest network of lawyers in the world based in Alicante, Spain.  After a rigorous selection and judging process, Lawyer Monthly, a legal publication based in the United Kingdom, has recently bestowed upon our Atty. Rainier Mamangun the Lawyer of the Year Award in the field of Family Law for the Year 2021.   In 2022,  his Firm was profiled on Global Law Experts  as its "Recommended Firm" in the area of Real Estate in the Philippines.   GLE is the premier guide to leading attorneys throughout the world with member firms from over 140 countries in over 50 practice areas.

 Prior to establishing the Firm in 2004, Atty. Rainier Mamangun was a lawyer for the 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 Philippine Embassies and Consulates across the globe.  Atty.  Mamangun is adept at handling cases in and out of court. His training with the DFA enabled him to hone his diplomatic skills which now prove crucial in his dealings and negotiations with the court and the opposition. His skills at legal drafting and the defense of existing legislation were developed through years of service at the Office for Migrant Workers Affairs and in appearances before Congressional hearings and various inter-agency meetings that dealt with law and policy formulation relating to the welfare of Filipinos overseas.    He had, for instance, defended the constitutionality of the "Migrant Workers' Act" before the Court of Appeals in coordination with the Office of the Solicitor General.    He spearheaded various missions to Malaysia, Indonesia, East Timor, Nepal, India and Saudi Arabia to protect the interest of the OFW (Overseas Filipino Worker); undertook diplomatic representations with foreign governments in connection with the cases he handled, and appeared before foreign courts such as the Riyadh Grand Court – a rarity for Filipino lawyers. While at the DFA, he was 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.

In 2003, he was part of the Drafting Committee for the Magna Carta for Seafarers, a bill intended to promote the welfare of millions of Filipino seafarers worldwide. He also wrote a paper on "The Policies and Laws Governing Filipino Seafarers." He also wrote a paper on the "Comparative Analysis of the Philippine Arbitration Law and the UNCITRAL Model Law on International Commercial Arbitration" published in online legal websites.  He briefly worked at the Prosecution Division of the Department of Interior and Local Government (DILG). He was also a Legal Consultant to the National Federation of Labor Unions (NAFLU), then one of the biggest labor federations in the Philippines.

He graduated from the University of the Philippines with a degree in Political Science and  is a member of the Fraternal Order of Utopia based in  Ateneo Law .

 Atty. Jon Alamis specializes in business and corporate law, contracts, securities, direct foreign investment, regulatory compliance, and data privacy. His practice areas also include real estate and commercial litigation, including intra-corporate disputes and financial fraud.

He serves as a director and corporate secretary to several multinational and domestic firms, and represents the country’s top conglomerates across several industries, including real estate, food, and power. As part of his securities practice, he has registered various types of securities with the Securities and Exchange Commission. His real estate practice includes the registration of various types of real estate projects with the relevant regulatory agencies for leading developers in the country.

Over a period of almost two decades, Jon has also represented the interests of numerous multinational companies in several commercial and civil disputes. With his multidisciplinary team, he provides corporate clients rapid crisis management services, including contingency and sustainability planning.

 Before joining LMJA, Jon was the General Counsel of Wall Street Global (Hong Kong and Manila Offices), where he was in charge of the licensing of securities with the Hong Kong Securities and Futures Commission, among others. He also conceptualized, organized and registered an investment adviser and a distributor of securities for the company to streamline its operations in Europe and the Asia Pacific.

He also served as the General Counsel for Rustan Supercenters, Inc. (Shopwise), and was a Senior Partner at Sebastian Liganor Galinato & Alamis Law.

Jon obtained his Juris Doctor degree at the Ateneo de Manila School of Law in 1999, and was admitted to the Philippine Bar in 2000. 

He became a member of the Hong Kong Securities Institute in 2008.