Our Lawyers

Dante Desierto

Dante A. Desierto

Firm’s Partner

Specializes in civil and commercial litigation, criminal law, family law, labor law, intellectual property protection and enforcement, banking and corporate due diligence, government procurement and defense contracts.

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Diane Desierto

Diane A. Desierto (LLM, JSD, Yale)

Firm’s Partner

Prof. Dr. Diane Desierto (JSD, Yale Law School) is the tenured Michael J. Marks Distinguished Professor and Co-Director of the ASEAN Law & Integration Center (ALIC) at the University of Hawaii William S. Richardson School of Law (USA); 2016-2017 Fellow of the Center for Advanced Study in Behavioral Sciences (CASBS) at Stanford University; 2016 Visiting Scientist at UNICA (Italy); International Arbitration and Regulation Partner at Desierto & Desierto Law (Philippines); and 2017 Director of Studies for Public International Law at the Hague Academy of International Law.

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Andrew Ammuyutan

Andrew F. Ammuyutan

Of Counsels

Is the managing partner of the firm and specializes in administrative and criminal law. He was Chief Legal Counsel and Assistant Ombudsman in the Office of the Ombudsman from 1998 to 2005, and concluded his stint in government service in December 2006 as Acting Senior Vice President for the Legal Group in the Government Service Insurance System. Earlier in his career, he worked as Court Attorney in the Supreme Court and actively engaged in private law practice.

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Ruben Purisima

Ruben O. Purisima

Of Counsels

He began work as Trial Attorney in the Office of the Government Corporate Counsel, and eventually went on to serve as member of the Board of Directors and/or Corporate Secretary of numerous companies engaged in varied areas of business such as industrial estate development, shopping mall development, investment housing, business consulting and appraisal and insurance brokerage.

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Ramon Ereneta

Ramon P. Ereñeta

Of Counsels

Since then, he has served as Executive Vice President and Chief Operating Officer of the Philippine Racing Club, Inc. and EBECom Holdings, Inc. and as member of the board of directors of several corporations and government entities including the Toll Regulatory Board and the Bonifacio Heritage Memorial, Inc.

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Aniano Desierto

Aniano A. Desierto

Principal Consultant

After retiring from the military service, he joined the civilian sector as a Special Prosecutor under the Office of the Ombudsman, an independent anti-corruption agency which he headed as Ombudsman from 1995 to 2002.

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Jeneline Nicolas

Jeneline N. Nicolas

Associate of the Firm

Jeneline Nicolas obtained her undergraduate (Bachelor of Arts, major in Political Science, Cum Laude) and Juris Doctor degrees from the University of the Philippines–Diliman, and was admitted to the Philippine Bar in May 2010. In 2014, she was awarded a scholarship by the Asian Development Bank–Government of Japan and was a fellow at the East-West Center in Honolulu, Hawaii.

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Our Consultant


Dr. Desiree Desierto

Desiree Desierto

Associate of the Firm

Dr. Desiree A. Desierto is the Economics, Politics, and Finance consultant of Desierto & Desierto Law. After obtaining master’s and doctoral degrees in Australia and the United Kingdom, she became Robert M. Solow Postdoctoral Fellow at the Cournot Centre in Economic Studies in France, Visiting Scholar at the University of Cambridge, consultant to several projects of the Asian Development Bank, and Associate Professor at the University of the Philippines.

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