Ms Yvonne Ong > Raja, Darryl & Loh > Kuala Lumpur, Malaysia > Lawyer Profile

Raja, Darryl & Loh
Level 26, Menara Hong Leong
6, Jalan Damanlela, Bukit Damansara
Yvonne Ong photo

Work Department

Intellectual Property.


Partner; Head of Intellectual Property.


Yvonne obtained degrees in Commerce and Law from Monash University in Melbourne, Australia in 1999 and 2000 respectively and thereafter read in Chambers with the firm.  After being called to the Peninsular Malaysian Bar in January 2002, Yvonne was assigned to the Dispute Resolution Practice Group of the firm for a number of years, where she handled a variety of litigation matters.  In 2005 she was transferred to the Intellectual Property Practice Group, where her litigation experience was especially useful in handling contentious IP matters.   She became a partner in 2011 and now heads the firm’s Intellectual Property Practice Group.

She is a registered Trademark, Patent and Industrial Designs Agent and deals with all types of intellectual property issues, including brand strategising, IP policies and enforcement and undertaking litigation where necessary.  Her clients range from sole proprietorships to multinational companies which are household names.

Yvonne has been recognized as a leading intellectual property practitioner in the 2020 – 2024 editions of Chambers Asia Pacific.  In recent publications of The Legal 500 Asia Pacific, clients have been quoted as describing Yvonne   as “outstanding”, “creative and commercially minded”, and “highly responsive and practically innovative in advising and representing clients in trademark related matters”.


English; Bahasa Malaysia.


Advocate and Solicitor of the High Court of Malaya (2002); Registered Trademark Agent; Registered Industrial Designs Agent; Registered Patent Agent; Member of the Malaysian Bar Council Intellectual Property Committee; Member of the ICC Malaysia Intellectual Property Working Committee; Honorary Secretary  of the Executive Committee of the Malaysian Intellectual Property Association; Member of the Executive Committee of AIPPI Malaysia; Member of the International Trademark Association; Member of Asian Patent Attorneys Association; Member of ASEAN Intellectual Property Association.


B.Comm, Monash University [1999]; LL. B, Monash University [2000]

Lawyer Rankings

Malaysia > Intellectual property

The offering at Raja, Darryl & Loh is headed by the ‘knowledgeable and commercially inclinedYvonne Ong, who regularly handles various IP policies, enforcement issues, and brand strategising. The firm acts for local and international clients from industries including pharmaceutical, technology, and construction, on a range of IP issues including the registration and protection of trademarks and domain names, franchising and licensing, and the filing of applications for patents.