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
March 3, 2017

MIP Patent Survey 2017 Recognizes Tilleke & Gibbins in Thailand

Tilleke & Gibbins has been awarded top rankings for its IP practice in Thailand from Managing Intellectual Property (MIP)  in the magazine’s Patent Survey 2017. With a “Tier 1” ranking in...

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January 13, 2017

Chambers Asia-Pacific 2017: Tilleke & Gibbins’ IP Practice in Thailand Earns Top Ranking

Tilleke & Gibbins’ intellectual property (IP) practice has been recognized by Chambers Asia-Pacific  with a “Band 1” ranking for the tenth consecutive year in 2017. The important milestone...

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November 25, 2016

The Asian Lawyer: Tilleke & Gibbins Named Intellectual Property Firm of the Year

The Asian Lawyer  has named Tilleke & Gibbins as the Intellectual Property Firm of the Year as part of its annual Emerging Markets Awards. Suebsiri Taweepon, a partner in Tilleke &...

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November 16, 2016

Legal 500 Asia Pacific 2017: Tilleke & Gibbins Ranked in Tier 1 for IP and TMT in Thailand

Tilleke & Gibbins has been ranked in “Tier 1” for Intellectual Property and Technology, Media, and Telecommunications in Thailand in the 2017 edition of The Legal 500 Asia Pacific, a guide to the...

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November 4, 2016

Asialaw Profiles 2017: Tilleke & Gibbins Leads All Firms in Rankings in Thailand

Asialaw Profiles 2017, a guide to the leading domestic and regional firms in the Asia Pacific, has awarded top rankings to Tilleke & Gibbins in Thailand. The rankings, which are determined...

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Datesort icon Title
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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October 3, 2016

Biosimilars in Thailand

Alan Adcock, Atthachai Homhuan

In 2002, the Thai government initiated a universal healthcare scheme to bring equitable healthcare access to the general public. Under the scheme, hospitals receive per capita funding based on 47...

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June 8, 2016

PLC Life Sciences Multi-Jurisdictional Guide 2016/17 – Thailand Chapter

Alan Adcock, Atthachai Homhuan, Siraprapha Rungpry

PLC Life Sciences Multi-jurisdictional Guide 2016/17  is a Q&A-style guide which provides an overview of the regulatory frameworks of the life sciences industries across multiple...

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May 18, 2016

Lex Mundi Guide on Health Industry Laws 2016 – Thailand Chapter

Alan Adcock, Atthachai Homhuan

Published by Tilleke & Gibbins in association with Lex Mundi, the International Guide on Health Industry Laws  provides an overview of healthcare systems in 19 jurisdictions worldwide. The...

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March 23, 2016

Intellectual Property in Thailand: Registration, Protection, Commercialization

Written for business operators who are new to the country, Intellectual Property in Thailand: Registration, Protection, Commercialization  provides a helpful introduction to IP issues under Thai...

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