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Sonatree Sehamontree

Consultant, Regulatory Affairs

Biography

Sonatree Sehamontree is a consultant in Tilleke & Gibbins’ regulatory affairs team in Bangkok. Sonatree assists clients with a range of matters pertaining to food, cosmetics, and hazardous substances, including Thai Food and Drug Administration (FDA) product registration, advertising and labeling guidelines, and various other life sciences and regulatory affairs issues. She also advises on Thai industrial standards matters that fall under the supervision of the Thai Industrial Standards Institute, as well as animal feed registrations with the Department of Fisheries.

Prior to joining Tilleke & Gibbins, Sonatree was a regulatory affairs supervisor for the Thai subsidiary of one of the world’s largest consumer goods multinationals, where she handled product compliance and Thai FDA registration for goods including food, cosmetics, and hazardous substances.

Sonatree holds a bachelor’s of science in food technology from Khon Khaen University, and a master’s degree in food safety, hygiene, and management from the University of Birmingham.

Experience

  • Assisted an industrial food company developing a frozen Thai sweet product for export to Japan by preparing product and raw material specifications in compliance with Japanese and Thai regulations.
  • Prepared registrations, applications, and license renewals for product approval licenses for food, cosmetics, and hazardous substances, in compliance with FDA regulations.
  • Advised cosmetics distributors and sellers on strategy for product naming, formulation, and labeling to meet Thai FDA requirements, and assisted them with obtaining the necessary licenses.
  • Advised various companies on obtaining product licenses and manufacturing/import licenses for products containing hazardous substances, and assisted with product labeling, product claims, and preparation of registration dossiers for FDA approval.
  • Advised a company on importing products that fall under the Thai industrial standards certification requirements overseen by the Thai Industrial Standards Institute.
ABOUT Sonatree

Location

Languages

    Thai

    English

Education

    MSc, University of Birmingham

    BSc, Khon Khaen University

Insights

July 24, 2026
As food innovation continues to accelerate, manufacturers are increasingly introducing ingredients derived from new sources, produced using novel technologies, or lacking a significant history of human consumption. While these innovations create new opportunities for the food industry, they also raise important questions regarding consumer safety. For this reason, many jurisdictions, including Thailand, the European Union, Australia and New Zealand, Canada, and Singapore, require a premarket safety assessment for novel food ingredients before they can be placed on the market. The objective of this assessment is to ensure that each ingredient is safe for its intended use and level of consumption, does not present toxicological, allergenic, microbiological, or nutritional concerns, and will not mislead consumers. Scientific authorities typically evaluate the ingredient’s identity, manufacturing process, composition, specifications, anticipated dietary exposure, toxicological information, nutritional impact, and history of use before determining whether it can be marketed. Against this background, the Thai Food and Drug Administration (FDA) recently took an important step toward improving regulatory transparency by publishing, for the first time, a consolidated public list of substances that have successfully completed the Thai FDA’s safety assessment process, including substances determined to be novel foods and those determined not to fall within the novel food category. The list identifies the approved substances, the corresponding manufacturers or importers, approval dates, and the approved conditions of use. Although the publication does not change the existing legal framework governing novel food approvals, it provides businesses with greater visibility into the Thai FDA’s regulatory precedents and the types of substances that have previously been accepted through the safety assessment process. The full announcement is available on the Thai FDA’s website. As the list is now publicly available, it also provides useful insight into the types of substances that have successfully completed the Thai FDA’s safety assessment process.
September 16, 2025
Since Thailand formally removed Mitragyna speciosa (kratom) from the list of narcotic drugs, the country has progressed from outright prohibition to a structured, license-based regime. While the Ministry of Public Health oversees cannabis plant regulation, the Ministry of Justice (MOJ) is the regulatory authority overseeing kratom plants. For the avoidance of doubt, separate Ministry of Public Health notifications prohibit the use of kratom as a food ingredient unless a food safety evaluation has been conducted; however, this restriction does not affect trade in unprocessed leaves per se. For businesses in Thailand dealing exclusively in kratom leaves, the most consequential development is the Ministerial Regulation on the Application for Permits and Notifications for the Importation and Exportation of Kratom Leaves B.E. 2568 (2025), a bylaw of the Kratom Plant Act 2022. The ministerial regulation establishes the following notable definitions: “Kratom leaves”: Fresh or dried leaves in their natural, unprocessed state (no extracts, concentrates, or infused products). “Import/Export”: Any act of bringing kratom leaves into or out of Thailand, whether for commercial sale, industrial processing abroad, or research. Import/Export Licensing Under the Kratom Plant Act, a license is mandatory for importing or exporting kratom leaves. Individuals, juristic persons, community enterprises, and state agencies in Thailand are eligible to obtain a license to import (or a license to export) kratom leaves. Licenses are available to qualified individuals and juristic persons. Individuals must satisfy the following qualifications to be eligible for a license: Thai nationality, ≥ 20 years old, resident in Thailand. Not incompetent, quasi-incompetent, or under legal guardianship. No license suspension currently in force under the Kratom Act or Narcotics Code. No license revocation in the previous two years. No conviction under the Kratom Act or Narcotics Code within the previous two years (unless fully released from punishment). Juristic persons must satisfy
May 2, 2025
Attorneys from Tilleke & Gibbins have updated the latest edition of Doing Business in Thailand, a Q&A-style guide from Thomson Reuters Practical Law that offers an overview of key legal considerations for companies operating in jurisdictions worldwide. The contribution outlines the country’s legal and regulatory framework for foreign investment and business operations and reflects the latest legislative developments. The chapter addresses the following core topics: Legal system: Structure of the courts and the codified nature of Thai law. Foreign investment: Business restrictions under the Foreign Business Act, sector-specific regulations, exchange control rules, and investment incentives. Business vehicles: Overview of partnerships, private and public limited companies, and other legal entities. Employment: Labor protections, employment contracts, foreign worker requirements, and termination procedures. Tax: Corporate and personal income tax, indirect taxes, and tax obligations for residents and non-residents. Intellectual property: Registration and enforcement of patents, trademarks, designs, and copyrights. Data protection: Key provisions of the Personal Data Protection Act and related compliance obligations. Competition law: Regulatory framework under the Trade Competition Act. Anti-bribery and corruption: Relevant legislation and enforcement mechanisms. E-commerce and digital business: Legal regime for online transactions and digital platforms. Marketing and advertising: Consumer protection laws and regulations affecting advertising and marketing practices. Product regulation and liability: Safety standards, liability regimes, and roles of enforcement authorities. Practical Law, a legal reference resource from Thomson Reuters, publishes a range of guides for hundreds of jurisdictions and practice areas. The insurance and reinsurance guide is a valuable resource for legal practitioners, covering numerous jurisdictions worldwide. To view the latest version of the guide, please visit the Practical Law website and enroll in the free Practical Law trial to gain full access.
December 4, 2024
Thailand Legal Basics, a valuable primer for foreign investors, explores all aspects of living and doing business in Thailand. Written by specialists at Tilleke & Gibbins in Bangkok, it is the only comprehensive English-language guide to the Thai legal system with a focus on the concerns of foreign business and investment.

Awards & Rankings

April 3, 2026
Tilleke & Gibbins is pleased to announce that the firm has been shortlisted in two categories at the Financial Times (FT) Innovative Lawyers APAC 2026 awards: Innovative Lawyers in Cyber and Data Privacy – “Digital Identity & Cryptocurrency Compliance” Innovative Practitioner – Athistha (Nop) Chitranukroh The FT Innovative Lawyers APAC Awards recognize law firms and practitioners who are driving innovation in legal services and delivering innovative client solutions across the Asia-Pacific region. This recognition marks our third acknowledgment in the Innovative Lawyers category and, notably, our first-ever nomination in the Innovative Practitioner category at the FT Innovative Lawyers APAC awards. It reflects our team’s continued ability to support clients on groundbreaking, forward-looking projects across the region. The awards ceremony will take place on May 14, 2026, in Hong Kong. To learn more about the FT Innovative Lawyers APAC 2026 awards and to view the full list of shortlisted organizations, please visit the FT website.
March 19, 2026
Tilleke & Gibbins has been recognized in 17 categories at the 2026 Thailand Law Firm Awards from Asia Business Law Journal (ABLJ), up from 10 categories in 2025. The awards highlight leading law firms in Thailand across a broad range of practice areas, as well as overall firm performance. This year, Tilleke & Gibbins was named a co-winner in the Best Overall Law Firm category as well as in the following practice-specific categories: Artificial Intelligence Aviation Blockchain & Digital Assets Competition & Antitrust Data Compliance & Cyber Security E-Commerce, Digital Trade & Platform Regulation ESG (Environmental, Social, and Governance) Fintech Healthcare & Life Sciences Insurance & Reinsurance IP Litigation IP Prosecution Labour & Employment Private Equity & Venture Capital Shipping & Maritime Technology, Media & Telecommunications The awards are determined through ABLJ’s independent research, which considers recent work, client feedback, and market standing. The annual Thailand Law Firm Awards recognize firms demonstrating strong performance and breadth of expertise across key practice areas. For more details and the full list of winners, please visit the ABLJ website.
March 9, 2026
Tilleke & Gibbins has been shortlisted in multiple firmwide and individual categories at the Legal 500 Southeast Asia Awards 2026, including Regional Firm of the Year, reflecting the firm’s work across Southeast Asia and the continued development of its regional practices. In the individual categories, Aye Thuzar Hlaing has been shortlisted for Myanmar Associate of the Year (Corporate and M&A), and Linh Duy Mai has been shortlisted for Vietnam Associate of the Year (Intellectual Property). Tilleke & Gibbins has also been shortlisted in the following firm categories: Regional Firm of the Year Thailand – Law Firm of the Year Thailand – Law Firm of the Year (Litigation) Myanmar – Law Firm of the Year Vietnam – Law Firm of the Year Vietnam – Law Firm of the Year (Labor and Employment) Laos – Law Firm of the Year The winners will be announced on April 30, 2026, at the Legal 500 Southeast Asia Awards ceremony in Singapore. To browse the full shortlist for the Legal 500 Southeast Asia Awards 2026, please see the Legal 500 website.

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