Mr Elmer Serrano > Serrano Law > Taguig City, Philippines > Lawyer Profile

Serrano Law
1105 Tower 2 High Street South Corporate Plaza
26th Street Bonifacio Global City
Taguig City 1634


Managing Partner


Mr. Elmer “Billy” Serrano’s solid experience and entrepreneurial approach mark his place as a leading legal expert not only in the Philippines but also in the region. The year 2022 marks a milestone in his career as he founded his own firm, SERRANO LAW.

His strong M&A experience spans three decades, having advised and provided strategic advice and solutions on several of the largest and most notable  mergers and acquisitions across a wide range industries, strongest in the financial, banking, shipping and gaming sectors. His practice focuses on projects, debt and equity offerings, acquisitions and joint ventures. His career highlights include an instrumental role in the historic merger that created BDO Unibank, Inc. He now regularly represents BDO and its subsidiaries in all its M&A, capital and debt transactions, notably the largest single peso bond issuance and the biggest equity capital market transaction by a Philippine corporate.

Mr. Serrano has been awarded Asia Best Lawyer by the International Financial Law Review (IFLR) for Banking and Finance, Capital Markets, and Mergers & Acquisitions, one of only two exclusively recognized lawyers in the Philippines since 2020.  This comes after being consistently recognized as a Highly Regarded-Leading Lawyer in the same fields by IFLR 1000.

He is also recognized as an elite Leading Individual by The Legal 500 Asia Pacific and is named Recommended Lawyer in various fields of practice.

Prior to his private legal practice, Mr. Serrano was a senior officer of BDO Unibank, handling investment banking, corporate finance and M&A. He was also an officer of Equitable PCI Bank, Inc.



Mr. Serrano holds a Juris Doctor degree from the Ateneo de Manila University and a BS Legal Management degree from the same university. He is a Certified Associate Treasury Professional and was among the top graduates of the Trust Institute of the Philippines in 2001.

Lawyer Rankings

Philippines > Real estate and construction

Elmer Serrano heads the department at Serrano Law, which has expertise in PPP projects for the development and operation of commercial mixed-use projects. Phil Ivan Chan is another key contact in the team, who has experience in the power sector.

Philippines > Banking and finance

(Firms to watch)

Serrano Law‘s ‘lawyers are versatile and provide practical and innovative legal solutions to complex issues. They are very diligent, easy to work with and accessible at reasonable times to provide any necessary legal opinions’. Elmer Serrano heads up the department.

(Leading individuals)

Elmer Serrano  – Serrano Law

Philippines > Antitrust and competition

(Firms to watch)

Elmer Serrano established Serrano Law in January 2022, following his departure from Martinez Vergara & Gonzalez Sociedad. The practice, which is ‘composed of highly proficient and experienced lawyers’, advises on all stages of merger control processes.

Philippines > Intellectual property

(Firms to watch)

Jointly led by Elmer Serrano and Tephanie Gandia, the team at Serrano Law advises on trademark and patent registrations, in addition to inter partes proceedings before the Intellectual Property Office of the Philippines.

Philippines > Corporate and M&A

Led by founding partner Elmer Serrano, the group at Serrano Law handles the corporate governance and compliance requirements of publicly-listed companies, as well as public corporations holding secondary licenses. Praised for providing ‘valuable advice on complex M&As’, the team regularly acts as counsel on acquisitions involving both equity purchase and asset sales in the shipping, logistics, real estate, energy and retail sectors. Serrano established the firm in January 2022 and was joined by Phil Ivan Chan and Tephanie Gandia, who left Martinez Vergara & Gonzalez Sociedad in the same month.