Ms Wongrat Ratanaprayul > Tilleke & Gibbins > Jakarta, Indonesia > Lawyer Profile

Tilleke & Gibbins


Partner and Director, Indonesia
Practice Areas: Intellectual Property, Life Sciences, Regulatory Affairs


Wongrat Ratanaprayul is a partner and director of Tilleke & Gibbins’ Indonesia operations, based in Jakarta. She is recognized as a leading practitioner in Indonesia by IAM Patent 1000 and WTR 1000, and in 2023 she was named to Managing Intellectual Property’s list of the Top 250 Women in IP globally. She advises clients on all aspects of IP prosecution in Indonesia, as well as in multiple jurisdictions throughout Southeast Asia, to ensure efficient and effective IP portfolio management. Wongrat’s practice benefits from her exceptional breadth of expertise and her international reach.

Wongrat is a particularly adept patent practitioner, and is much sought-after in highly technical fields including biotechnology, pharmaceuticals, automotive, electronics, and computer-related technology. She regularly interviews inventors to derive information pertinent to drafting patent applications in life sciences and consumer products; provides opinions on freedom-to-operate analyses; routinely conducts patent and design searches; and provides clients with clear and practical patent portfolio management strategies to protect their interests.

Wongrat also oversees the firm’s regulatory affairs practice in Indonesia, serving clients in pharmaceuticals, food, cosmetics, and related industries with respect to product registration and compliance. In addition, she supervises the preparation of trademark applications, registrations, and renewals, and coordinates enforcement strategies to protect brand owners’ interests.

Prior to attending law school, Wongrat worked at Keck Graduate Institute, where she focused her research on proteomics. During her graduate study in biotechnology, she specialized in bioinformatics and annotated mouse genes present on pancreas cDNA.

Before moving to head up the firm’s Indonesia office, Wongrat worked as an attorney-at-law in the firm’s head office in Bangkok for several years. Wongrat is admitted to the bar in Connecticut and Massachusetts and is qualified as a Thai patent agent.


Thai, English


JD, University of Connecticut School of Law

Master of Biotechnology, University of Pennsylvania

BSc, State University of New York at Stony Brook

Lawyer Rankings

Indonesia > Intellectual property

(Leading individuals)

Wongrat RatanaprayulTilleke & Gibbins

Tilleke & Gibbins leverages the wider footprint of the firm, with offices in Cambodia, Laos, Myanmar, Thailand, and Vietnam, to provide a cross-jurisdictional, regional offering to the firm’s multiple blue-chip and multinational clients. Director of the practice Wongrat Ratanaprayul encapsulates the wider firm in her advisory work with international companies, covering the full scope of IP prosecution in both Indonesia and across the firm’s other regional locations, to assist in the effective management of their IP portfolios. Somboon Earterasarun, operating from Bangkok, remains a key point of contact given his experience of the Indonesian market. Also of note is Irene Djalim who handles patent applications in the chemical, mechanical, and pharmaceutical sectors.