OS Law assists its clients with their corporate, commercial, and tax needs across a spectrum of business concerns, including general corporate and commercial matters, company establishment and registration, contract negotiation and drafting, mergers and acquisitions, joint ventures, corporate restructuring, foreign direct investments, transfer pricing and litigation.

​​OS Law is comprised of Philippine attorneys with outstanding academic and professional backgrounds and decades of legal, government, and regulatory experience. They are skilled industry advisers, having worked at top Philippine law firms and professional service firms where they have been involved in significant transactions and dealt with foreign clients acquiring, managing, or divesting Philippine investments.

The power and energy sector is a key focus for OS Law as it builds on its partners’ experience with the industry. Their partners’ expert knowledge of the Philippine regulatory framework and experience with domestic and foreign investment proposals, combined with access to DFDL’s regional legal and tax expertise and extensive experience in international cross-border transactions in the South and Southeast Asian markets, enables OS Law and DFDL to assist clients in optimizing opportunities and handling investments.