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Dat Thanh Nguyen

Senior Patent Executive

Biography

Dat Thanh Nguyen is a senior patent executive in Tilleke & Gibbins’ Hanoi office and the deputy manager of the electronics patent practice. Ranked as one of Vietnam’s leading patent practitioners in the IAM Patent 1000, Dat specializes in information technology and electronics, having spent more than 17 years prosecuting patent applications in these fields from the pre-filing to post-granting stages. He has also handled mechanical and chemical patents. During this time, he prosecuted more than 1,200 patent and design applications.

Dat holds a Bachelor of Information Technology from the Hanoi University of Technology. He also received a Diploma in Software Engineering, with distinction, from FPT-Aptech. After graduating from university, he worked for one year as a software developer for FPT Software, one of Vietnam’s top IT companies. Dat then spent several years working at a top IP law firm. He has also completed a training course in patent drafting techniques that was organized by the European Patent Office and the IP Office of Vietnam.

Experience

  • Handled more than 1,200 patent and design applications in the IT, electronics, telecommunications, mechanical, and chemistry fields, among other areas.
  • Handled patent applications from the pre-filing to post-granting stages, such as advising before filing, translating the specification into Vietnamese, filing applications, reporting and responding to the formality and substantive office actions, advising on appeals, handling payments for annuities, and amending/assigning during the prosecution and after grant.
  • Managed patents for a top Korean electronics company, and several top European and Chinese electronics and telecommunications companies.
  • Advised a client on pursuing an invention related to betting (betting machine) by filing an appeal to the Director of the IP Office of Vietnam.
  • Provided patent training and research for a top IT company in Vietnam.
ABOUT Dat Thanh

Location

Languages

    Vietnamese

    English

Education

    BEng, Hanoi University of Technology

Insights

August 21, 2025
Tilleke & Gibbins is pleased to announce that the firm has adopted Harvey, a leading enterprise-grade AI platform for the global legal industry. The firm is proceeding with a rollout of Harvey’s legal AI solutions, which are supported by robust security and confidentiality protections, across the firm’s full-service regional practice in Southeast Asia. This initiative builds on the firm’s recent deployment of Microsoft Copilot and represents another advancement in Tilleke & Gibbins’ commitment to leveraging technology for enhanced legal service delivery. Under the program, legal professionals across the firm’s offices in Cambodia, Indonesia, Laos, Myanmar, Thailand, and Vietnam will have access to the full Harvey platform, equipping them to deliver practical, impactful, and results-driven legal services for clients throughout the region. The firm will also develop bespoke agentic workflows within Harvey tailored to the firm’s core practices and the unique requirements of Southeast Asian legal markets. Commenting on the initiative, Managing Partner Tiziana Sucharitkul stated, “At Tilleke & Gibbins, we have consistently invested in developing and adopting technology to improve the speed, precision, and overall excellence of our legal services. The firm’s decision to invest in Harvey exemplifies our commitment to innovation, further differentiating Tilleke & Gibbins within Southeast Asia’s legal landscape.” Managing Partner Darani Vachanavuttivong remarked, “By combining the deep regional expertise of our lawyers with Harvey’s market-leading domain-specific AI, we are empowering our regional team to streamline drafting, research, and review processes for complex legal matters, all while maintaining the high standards of quality and security our clients expect from us.” Harvey’s Chief Business Officer John Haddock added, “It’s clear Tilleke & Gibbins is investing heavily in innovation, and it’s clear their global clients will benefit significantly from their focus and investment. The Harvey team is thrilled to support the firm’s journey with our platform.”
February 15, 2023
To improve its patent application processing capacity, the Intellectual Property Office of Vietnam (IP Office), with the support of the Japan International Cooperation Agency (JICA), is continuing to develop a draft amendment to the patent application examination guidelines for inventions related to computer programs. After issuing Annex I to the patent application examination guidelines in 2021, which covered subject-matters related to computer programs that are protected as inventions, the IP Office’s Patent Examination Center, with the support of experts from the JICA, has now developed a draft of Annex II. This draft provides guidance on examination related to a sufficient disclosure of the substance of claimed subject-matters and an assessment of the protection criteria (novelty and inventive step) of subject-matters related to computer programs, along with illustrative examples. In addition, the draft introduces the concepts of “sub-combination inventions” and “mixed-type inventions”, an assessment of the clarity of sub-combination inventions, and the assessment of novelty and inventive step of mixed-type inventions. To evaluate the amendments in the draft, in conformity with the legal regulations and the examination practice, the Patent Examination Center organized a discussion of the draft on February 4, 2023, with the contribution of opinions and comments from IP representatives, organizations, schools, institutes, and individuals. The Patent Examination Center announced that it wishes to receive further constructive opinions from interested parties to improve the amendments of the guidelines. In the context that inventions related to computer programs are closely related to new technologies such as artificial intelligence (AI), and noting the many difficulties arising in the examination process, we hope that the amendments to the guidelines, specifically as outlined in the draft of Annex II, will soon be finalized and officially released. This annex will certainly facilitate the examination of inventions related to computer programs, as well as
January 13, 2022
Intellectual property experts from Tilleke & Gibbins were engaged by ARISE+ IPR, a regional support program funded by the European Union and implemented by the European Intellectual Property Office, to craft a series of IP enforcement guides for Southeast Asian countries, aimed at raising local awareness of the importance of IP protection. The five-year, EUR 5.5 million ARISE+ IPR program supports regional integration through IP cooperation and aims to upgrade national IP systems for creation, protection, utilization, administration, and enforcement to be in line with international best practices and standards and the strategic objectives of the ASEAN Intellectual Property Rights Action Plan 2016-2025. The guides were developed by Tilleke & Gibbins’ lawyers in cooperation with the IP offices of each participating country, and cover issues related to trademarks, industrial designs, and geographical indications. Each guide was produced in a compact leaflet form in English as well as the local language, and is considered an official publication of the respective national IP office. The guides can be accessed from the ARISE+ IPR site (under “Leaflets, brochures and booklets”), or by clicking on the links below: Cambodia: English | Khmer Indonesia: English | Bahasa Indonesia Thailand: English | Thai Vietnam: English | Vietnamese
August 4, 2021
As Vietnam continues to fight the latest wave of the Covid-19 pandemic with strict social distancing measures, the Intellectual Property Office of Vietnam (IP Office) has issued Notice No. 7581/TB-SHTT dated August 2, 2021 (Notice 7581), extending certain deadlines for IP applicants. The contents of Notice 7581 are similar to those found in Notice 5277 issued in March 2020 during the first wave of the pandemic. Specifically, Notice 7581 reads as follows: All procedures related to procedures to establish industrial property rights (priority claims, supplementation of documents, responses to the IP Office’s decisions/notifications, renewal and extension of the validity of protection titles, payment of fees and charges, and filing of appeal petitions) falling due during the period from June 30, 2021, to the end of August 31, 2021, will automatically be extended to the end of September 30, 2021. For other cases, if an applicant is still affected by the Covid-19 epidemic with regard to the implementation of its rights and obligations in the procedures for establishing rights to industrial property objects at the IP Office, such applicant may request [the IP Office] to apply the clauses on objective obstacles and force majeure as set out in Points 9.4 and 9.5 of Circular No. 01/2007/TT-BKHCN, as amended and supplemented by Circular No. 16/2016/TT-BKHCN. Observations on the Content of Notice 7581 As with last year’s Notice 5277, it is worth noting that the wording of Notice 7581 covers only the procedures to “establish industrial property rights,” rather than all aspects of industrial property rights. Further, it could be understood that it provides a closed list of industrial property procedures that can enjoy this grace period, and that the deadline extensions would apply only to the specific items listed. Thus, it is uncertain if the deadline extension to September 30, 2021,

Awards & Rankings

June 4, 2026
Tilleke & Gibbins has reinforced its position as one of Southeast Asia’s leading patent practices in the newly released IAM Patent 1000 2026, earning top-tier firm rankings in Indonesia, Thailand, and Vietnam, alongside 23 individual recognitions across the region. The firm achieved Gold rankings in Thailand and Vietnam and a Highly Recommended ranking in Indonesia—the highest tier available in the jurisdiction—highlighting the strength and consistency of its regional patent practice. This marks the firm’s 14th consecutive year in the top tier for Thailand, seventh consecutive year for Vietnam, and third straight year ranked among Indonesia’s leading firms. The firm’s strong regional performance is further reflected in the individual rankings, with the following Tilleke & Gibbins practitioners recognized for their expertise in patent law: Indonesia Irene Djalim Melinda Ambrizal Wongrat Ratanaprayul Thailand Alan Adcock Atthachai Homhuan Darani Vachanavuttivong Jakkrit Kuanpoth Napagate Triratana Nattriya Supmoon Nuttaphol Arammuang Peeyakorn Suparugbundit San Chaithiraphant Somboon Earterasarun Suebsiri Taweepon Sukontip Jitmongkolthong Wong Vorravitwattana Vietnam Dat Thanh Nguyen Giang Hoang Bach Hien Thi Thu Vu Hung Tuan Nguyen Linh Duy Mai Loc Xuan Le Thanh Phuong Vu The IAM Patent 1000 identifies the world’s leading patent firms and practitioners through extensive qualitative research based on feedback from clients, peers, and industry stakeholders. For more details, please see the IAM Patent 1000 rankings for Indonesia, Thailand, and Vietnam.
May 14, 2026
Asian Legal Business (ALB) has published the ALB Asia IP Rankings 2026, the latest edition of its annual guide recognizing leading intellectual property firms across the region. Continuing the approach introduced last year, the rankings present a unified table in each jurisdiction, combining patent and trademark/copyright work to provide a more holistic view of the IP market. Tilleke & Gibbins has retained strong rankings in all three jurisdictions covered by the survey: Thailand: Tier 1 Vietnam: Tier 1 Indonesia: Tier 2 The rankings are based on work conducted between February 2025 and February 2026, covering both ongoing and completed contentious and noncontentious matters. ALB’s research draws on firm submissions, client feedback, editorial resources, and market input to identify the region’s leading IP practices. Tilleke & Gibbins’ IP team has maintained a strong track record across all ranked jurisdictions since the inception of the ALB IP Rankings in 2018. To view the full rankings, please see the May 2026 issue of ALB.
May 11, 2026
Tilleke & Gibbins has been recognized in five practice areas at the Asia Business Law Journal (ABLJ) Vietnam Law Firm Awards 2026, reflecting the firm’s continued strength across a range of legal disciplines in Vietnam. The firm received honors in the following categories: Artificial Intelligence Data Compliance and Cyber Security IP Litigation Labor & Employment Technology, Media & Telecommunications The ABLJ Vietnam Law Firm Awards highlight leading law firms across key practice areas, with multiple firms typically recognized in each category. The 2026 edition marks the fourth year of the awards program. These recognitions underscore the work of Tilleke & Gibbins’ Vietnam-based teams, particularly in technology-driven and regulatory-focused areas of practice. For more details and the full list of winners, please visit the ABLJ website.

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