Atthachai Homhuan

Manager, Regulatory Affairs
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T: +66 2056 5610
F: +66 2056 5678

Practices

Office

Languages

Thai, English

Education

PhD, Mahidol University

BSc, Chulalongkorn University

Dr. Atthachai Homhuan is a manager, regulatory affairs, at Tilleke & Gibbins. Atthachai assists chemical, life sciences, pharmaceutical, and biotechnology companies to draft and review their patent claims and specifications. He advises patent agents on amending claims and providing responses to office actions. Atthachai frequently drafts counterstatements against opposing parties in trademark and patent applications. His practice also includes advising on pre-litigation and litigation matters involving the life sciences, medical devices, and pharmaceuticals. He has presented before the IP&IT Court as a witness in chemistry and life sciences patent litigation.

In addition to patent work, Atthachai prepares healthcare product dossiers for registration and he helps international companies develop market entry strategies for countries in Southeast Asia. His broad experience allows him to evaluate the feasibility of product registrations, conduct plant audits, and coordinate pre-clinical and clinical trials in accordance with international guidelines and standards. Atthachai also reviews healthcare product labeling for food, cosmetics, medical devices, and drug products in Thailand and other Southeast Asian countries.

Prior to joining the firm, Atthachai was a postdoctoral researcher in Japan and Taiwan, focusing on stem cell therapies and vaccine development. He applied his technical expertise to the industry when he became a project manager for a Thai vaccine manufacturing company, where he led the firm’s R&D efforts. His industry background also includes serving as a formulation manager at the subsidiary of a well-known American pharmaceutical innovator, where he was a group leader in charge of the company’s R&D and production functions.

Atthachai holds a PhD in Pharmaceutical Technology from Thailand’s Mahidol University, and he frequently lectures on pharmaceutical and chemical patents at universities across Thailand. He has completed the South East Asian Drafting Training Couse, enabling him to prepare patent applications and claims.

  • Revised guidelines for Thai patent officers examining chemical and pharmaceutical patents.

  • Implemented a quality system and GMP-related topics for the manufacturing of vaccines. This involved working closely with the Department of Medical Sciences of the Thai FDA in regard to biohazard manufacturing, ex-plan audit, in order to obtain approval.

  • Participated in conducting clinical trials and bioequivalence studies for new drugs and conventional products, and ensured the trials/studies and protocols were in accordance with the Good Regulatory Practices and Good Clinical Practices.

  • Co-invented several pharmaceutical products regarding liposomal vaccines and stem cell therapy, each of which is patented in Japan.

  • Assisted life sciences and chemical companies to draft a variety of complex patents involving the manufacturing process of creating polymers from waste gas and patents related to biological vaccines, among others.

  • Audited leading pharmaceutical companies to ensure that their product registration dossiers and advertising campaigns comply with Thai legislation.

  • Registered new biological product dossiers at the Thai FDA and received approval within 1.5 years—a short period of time to obtain approval for a new drug in Thailand.

  • Registered medical devices, food products, and cosmetics with the Thai FDA for domestic and international companies.

  • Worked with the firm’s litigation team and won a disputed patent litigation case for a chemical glass company, in which the opposing party claimed damages exceeding THB 50 million.

Datesort icon Title
December 12, 2017

Tilleke & Gibbins Earns Top Rankings in Chambers Asia-Pacific 2018 in Thailand

Tilleke & Gibbins has been recognized with Band 1 rankings for its Intellectual Property, Insurance, and Technology, Media, and Telecommunications (TMT) practices in Thailand in the 2018 edition...

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November 30, 2017

Legal 500 2018: Tilleke & Gibbins Ranked in Tier 1 in IP, Labor and Employment, Tax, and TMT in Thailand

Tilleke & Gibbins’ Bangkok office has been ranked in “Tier 1” for Intellectual Property, Labor and Employment, Tax, and Technology, Media, and Telecommunications in the 2018 edition of The Legal...

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November 29, 2017

Tilleke & Gibbins Wins Three Asialaw Firm of the Year Awards

Tilleke & Gibbins has received high accolades for its exceptional regional practice at the inaugural Asialaw Asia-Pacific Legal Practice Awards, where it was named Southeast Asia Firm of the Year...

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November 15, 2017

Asialaw Profiles 2018: Tilleke & Gibbins Leads Rankings in Thailand

Regional law firm Tilleke & Gibbins has again distinguished itself as the dominant domestic law firm in Thailand in Asialaw Profiles 2018, a guide to the top domestic and regional firms in the...

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October 23, 2017

Asia IP Patent 2017: Tilleke & Gibbins Top Tier for Thailand and Vietnam

In the 2017 edition of its annual Patent Survey, Hong Kong-based Asia IP  magazine has again placed Tilleke & Gibbins at the very top of the field, with Tier 1 rankings in the following...

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Datesort icon Title
November 28, 2017

Thailand Food and Drug Administration Unveils New Official Fees

Atthachai Homhuan

Higher life expectancy, a growing middle-income population, and the government’s policy of promoting access to medicine are key drivers boosting demand for healthcare-related businesses in Thailand....

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September 22, 2017

PLC Life Sciences Global Guide 2017 – Thailand Chapter

Alan Adcock, Atthachai Homhuan, Siraprapha Rungpry

PLC Life Sciences Global Guide  is a Q&A-style chapter that provides an overview of the regulatory frameworks of the life sciences industries across multiple jurisdictions worldwide. Legal...

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August 31, 2017

Thailand Legal Basics

Thailand Legal Basics, a valuable primer for foreign investors, explores all aspects of living and doing business in Thailand. Written by Tilleke & Gibbins, the book begins with an overview of...

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May 5, 2017

Lex Mundi Guide to Doing Business in Thailand 2017

As part of its membership in Lex Mundi, Tilleke & Gibbins has published an updated edition of its Guide to Doing Business in Thailand for 2017.This guide offers a broad introduction to all of the...

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February 14, 2017

PLC Distribution and Marketing of Drugs Global Guide 2016/17 – Thailand Chapter

Alan Adcock, Siraprapha Rungpry, Atthachai Homhuan

The 2016/17 edition of the Distribution and Marketing of Drugs Global Guide, covering issues related to the marketing of drugs across 28 different jurisdictions, has been published by Practical Law....

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