Ronald Mark C. Lleno is a trial lawyer who specializes in litigation and employment law. Mark is a trial lawyer and he handles civil and criminal cases before all levels of the Philippine judiciary, including the Regional Trial Courts, the Court of Tax Appeals, the Court of Appeals, and the Supreme Court. He also appears before administrative and quasi-judicial agencies, including the Bureau of Internal Revenue, the Securities and Exchange Commission, the Central Board of Assessment Appeals, and the Intellectual Property Office of the Philippines. In his employment law practice, Mark specializes on internal investigations into executive misconduct, employment litigation defense, illegal dismissal actions, unfair labor practice actions, and other employment related lawsuits. He also provides advice on a wide range of employment and labor laws, and compliance with these laws. Mark also handles general corporate work.
Among his recent representations in his litigation practice, Mark advises a multi-national mining company in a writ of kalikasan case pending before the Court of Appeals and Supreme Court (with a related case pending in a Regional Trial Court). He also represents a worldwide religious organization in its land-related disputes in the Philippines. He also represents a European ambassador who was criminally indicted for a non-bailable crime in the Philippines. Among his recent representations in his employment practice, he handled an internal investigation relating to sexual harassment allegations against the CEO of a multinational human resources management provider.
Published Works
- SyCipLaw Provides Insights in Latest Lexology Panoramic: Tax Controversy December 3, 2025 | Published Works
- SyCipLaw Contributes to Latest Edition of Chambers Insurance & Reinsurance Global Practice Guide February 27, 2025 | Published Works
- SyCipLaw Authors Philippine Chapter of Chambers Insurance & Reinsurance Global Practice Guide 2024 February 23, 2024 | Published Works
- SyCipLaw Contributes the Philippine Chapter of Chambers’ 2023 Global Practice Guide on Tax Controversy May 20, 2023 | Published Works
- Philippine Chapter to the Chambers Global Tax Controversy Guide 2021 June 12, 2021 | Published Works
- SyCipLaw’s Employment and Immigration Department Contributes Articles to the Korean Chamber of Commerce Philippines Newsletter December 13, 2021 | Published Works
- SyCipLaw Authors Philippine Chapters of Latest Chambers Insurance Global Practice Guide February 14, 2022 | Published Works
- Electric Vehicle Industry Development Act offers tax incentives June 10, 2022 | Published Works
- SyCipLaw Contributes the Philippine Chapter of Chambers’ Global Practice Guide on Tax Controversy May 20, 2022 | Published Works
- New bill seeks to impose VAT on digital transactions January 13, 2023 | Published Works
- SyCipLaw’s Employment and Immigration Department Contributes to the Korean Chamber of Commerce Philippines Newsletter February 14, 2023 | Published Works
- SyCipLaw Authors Philippine Chapter of 2023 Chambers Insurance & Reinsurance Global Practice Guide February 27, 2023 | Published Works
- IFLR: “Philippines: Employees in corporate reorganisations” June 17, 2016 | Published Works
- ALB: “Anti-Corruption Laws in the Philippines” September 20, 2016 | Published Works
News and Announcements
- SyCipLaw Hosts Legal Aid Clinic for Pasig City Residents December 9, 2025 | News and Announcements
- SyCipLaw Recognized in ITR World Tax 2026 Rankings October 23, 2025 | News and Announcements
- SyCipLaw Lawyers Elected as IBP Officers for the Term 2025-2027 March 6, 2025 | News and Announcements
- SyCipLaw Advises on J&T Global Express’s IPO, Hong Kong’s Second Largest in 2023 October 27, 2023 | News and Announcements
- SyCipLaw is Recognized as a Top Tier Firm by The Legal 500 Asia-Pacific 2022 January 24, 2022 | News and Announcements
- SyCipLaw Sweeps The Legal 500 Asia Pacific 2021 Rankings Again January 28, 2021 | News and Announcements
- Ronald Mark C. Lleno, SyCipLaw’s New WLG Key Contact Partner, Member of Human Resources Group February 2, 2022 | News and Announcements
- SyCipLaw lawyers inducted as members of the IBP Makati Chapter August 26, 2022 | News and Announcements
- SyCipLaw Joins IBP Makati Chapter Legal Aid Clinic at Makati City Jail December 6, 2022 | News and Announcements
- SyCipLaw Retains Top-Tier Rankings in The Legal 500 Asia Pacific 2023 Guide January 17, 2023 | News and Announcements
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