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 – 2022 editions of Chambers Asia Pacific.   The 2021 edition of Asia Pacific Legal 500 described her as “outstanding”.


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 ICC Malaysia Intellectual Property Working Committee; Member of the Malaysian Bar Council Intellectual Property Committee; Member of the Executive Committee of the Malaysian Intellectual Property Association; 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

Raja, Darryl & Loh’s ‘knowledgeable and experienced’ IP team is led by Yvonne Ong. It has contentious and non-contentious abilities, and advises local and international clients on the full range of issues arising in this area of law in Malaysia. Noteworthy work includes its successful representation of a technology company in the High Court, regarding an alleged copyright infringement. The industry sectors its work covers range from fashion to pharmaceuticals and consumer goods. Its advisory work spans the full spectrum of IP regulatory issues, often involving both domestic and cross-jurisdictional elements.