Firm Profile > D & N International > Hanoi, Vietnam

D & N International

The firm: D&N International (DNI), founded in 1992 by Ms Dang TH Thuy, is a Hanoi-based private law firm specialising and focusing on intellectual property practice. DNI provides one-stop-shop IP services to satisfy all its clients’ needs, including registration, litigation, enforcement and licensing. The firm’s IP practice covers Vietnam, Laos, Cambodia and Myanmar.

In 2005, with a view to providing clients with comprehensive legal services on a variety of matters, the firm expanded its business activities to cover a broader range of issues and most notably focuses on consultancy and assistance in the fields of franchise, enterprise establishment, technology transfer, domain name etc. In the meantime, DNI’s representative office kicked off its ribbon-cutting ceremony in France, launching its mission to represent DNI through a European portal.

DNI’s goal is to gain clients’ confidence through clear and transparent working behaviours and a code of conduct that the board of directors and every individual staff member always bear in mind.

Areas of practice: Since it commenced operation, DNI has been positioning itself to create, build and sustain a transparent means of working with clients, collecting data and arguments, handling cases, settling procedures, easing cumbersome paperwork and lobbying governmental agencies to gain effective, accurate and timely results. DNI offers three pillar sectors, including intellectual property, legal consulting, and IP litigation and enforcement.

Concretely, DNI has extensive experience in the intellectual property sector, in filing and prosecution of patent/industrial designs/trade mark applications in various fields, protecting copyrights through registration of the client’s work with the Copyright Office of Vietnam, portfolio management, licensing, specialist investigation, and it offers practical advice to clients on all IP aspects. Furthermore, the firm has strong expertise in anti-counterfeiting raid campaigns against trademark infringers and handling patent infringement as well as working closely with government IP enforcement authorities to effectively protect trademark and patent rights of the clients. As a result, DNI is regularly ranked among the leading IP practitioners in Vietnam and the firm’s clients include many of the world’s famous brand owners.

Moreover, the firm also provides legal consulting services on several aspects of Vietnamese law with emphasis on civil law and business and commercial law. The services include, but are not limited to, providing legal advice and assisting clients to register, amend, annually report, overcome official actions of the competent authorities when the clients conduct activities of franchising, enterprise establishment, technology transfer, domain name registration and enforcement, etc in Vietnam.

Besides, DNI has strong expertise and experience in representing clients before competent authorities in litigation and enforcement actions in connection with patents, industrial designs, trade marks, copyrights, unfair competition, domain name, etc to assure that clients’ rights and benefits are effectively and adequately protected.

With the firm’s unflagging effort in providing clients with the highest professional services and contributing to making a more transparent legal environment in Vietnam, throughout the last three decades, DNI has gained a good reputation among the local and international business community and continues developing new ways and new values to satisfy clients’ needs.

Team: DNI is managed by a group of partners and supported by a network of associates having strong expertise and extensive experience in advising and representing national and foreign clients in various fields of laws. Particularly, with five partners and 24 associates and paralegals who have extensive IP experience, DNI constantly provides comprehensive solutions to clients, working towards effectiveness, efficiency, lawful compliance, and time and cost saving. Also, DNI provides the best conditions for its staff to get access to diversity of training courses from the leading experts which helps them get more knowledge about specific IP-related issues and learn how to manage their time and huge workload within  an 8-hour day.

Language: The firm’s law specialists can fluently speak English, Russian, French and Vietnamese.

Department Name Email Telephone
Patent and design Tran TT Huyen + 84 2435 625 016, ext 105
Patent and design Tran TN Hoa + 84 2435 625 016, ext 107
Patent and design Nguyen TT Ninh + 84 2435 625 016, ext 104
Patent and design Tran Xuan Thang + 84 2435 625 016, ext 108
Patent and design Truong Quang Minh + 84 2435 625 016, ext 102
Partner, Head of Trade mark and copyright Department Dang TT Hang + 33 1 69 21 54 59
Trade mark and copyright Doan Thanh Nga + 84 2435 625 016, ext 114
Trade mark and copyright Do Do Thanh + 84 2435 625 016, ext 111
Trade mark and copyright Dang Thi Hue + 84 2435 625 016, ext 109
Trade mark and copyright Dang Hong Son + 84 2435 625 016, ext 110
Managing Partner, IP enforcement and litigation, Franchising and technology transfer Dang TH Thuy + 84 2435 625 016, ext 116
Head of IP enforcement and litigation, Chief of France Representative Office, Franchising and technology transfer Dang TH Nga + 33 1 69 21 54 59
Business and investment, Franchising and technology transfer Nguyen DV Long
IP Litigation & Enforcement; Franchising and technology transfer Nguyen Hong Nhung + 84 2435 625 016, ext 118
Photo Name Position Profile
 Son Dang Hong  photo Son Dang Hong Associate
Mrs Hue Dang Thi  photo Mrs Hue Dang Thi Senior Associate
 Nga Dang Thi Hong  photo Nga Dang Thi Hong Head of Representative Office in France, Partner
Mrs Hang Dang Thi To  photo Mrs Hang Dang Thi To Partner
Mr Cuong Dang Viet  photo Mr Cuong Dang Viet Director
Mr Thanh Do Do  photo Mr Thanh Do Do Mr. Thanh has joined D&N International since 2009 as an associate, focusing on…
Mrs Nga Doan Thanh  photo Mrs Nga Doan Thanh Senior Associate
 Long Nguyen Dang Vu  photo Long Nguyen Dang Vu Associate
 Nhung Nguyen Hong  photo Nhung Nguyen Hong Lawyer, Secretary to Managing Partner
 Ninh Nguyen Thi Thuy  photo Ninh Nguyen Thi Thuy Associate
Mrs Hoa Tran T. Nhu  photo Mrs Hoa Tran T. Nhu Senior Associate
Mrs Huyen Tran T. Thanh  photo Mrs Huyen Tran T. Thanh Senior Associate
Mr Thang Tran Xuan  photo Mr Thang Tran Xuan Senior Associate
 Minh Trung Quang  photo Minh Trung Quang Associate
Number of partners : 5
Number of associates : 16
Number of paralegals : 8

D& N International is managed by a group of partners and supported by a network of associates having strong expertise and extensive experience in advising and representing national and foreign clients in various fields of laws. We constantly place great importance on human resources development considering that our people are the key to our long term success. After intensive working hours, our Company organizes weekly “Happy Hour” for our staffs to discuss and share thinking, knowledge and experiences in dealing with the client’s cases or relaxing, singing and watching movies if they’d love to do. Besides, the members of our Company have chances to get access to diversity of training courses of the leading experts which help them to learn how to manage their time and huge workload with a 8-hour limitation every single day as well as how to maintain their health in regularly good status when facing pressure of deadlines and tasks. Moreover, our Company establishes foreign exchange (e.g. Thailand) each year so that the staffs could learn “Meditation/ Zen” and how to effectively apply Meditation/Zen in the working environment to help the staffs have calmed and firm thinking when handling of the clients’ matters. As such, our desire in creating an environment where diverse lawyers can learn, experience, and benefit from working with talented seniors/colleagues assists us in recruiting legal professionals who can apply their skills, knowledge and experience into the work of serving our clients.

At D& N International, we also give prominence to eliminate discrimination of race, ethnicity, religion or spiritual beliefs, gender, age, sexual orientation, abilities and background as well as promote equality and diversity in our policies, work flows and working environment. Diverse lawyers and staffs are treated equally in our recruitment and selection, terms and conditions of employment, training opportunities and promotion. Through our diversity and inclusion strategy, we even have supported and organized extracurricular activities focusing on gender, disability and multiculturalism, such as mediation, anniversaries for women or their children, etc.

For community, D& N International spends a part of its annual revenue on charities. Members of the Company will have chances to take part in regular activities of visiting and delivering gifts to the disabled persons and orphans, supporting poor people with all available materials such as cloths, foods and financial support, etc.

In all our offices, D& N International commits to including the principles of diversity and inclusion in our internal policies and practices, promoting the diverse culture of the Company, positively contributing to our communities and better serving our clients.

CLIENT: Mr. Lee Jin Young


TESTIMONIAL: Today, I received a report about the result of our trademark case. I’m glad to hear the good news, and I’d like to express my deep gratitude for your faithful efforts. We showed that our hard business trip of SAIGON in JULY is meaningful. Thank you again, and please convey my message to other people of D & N

CLIENT: Ms. Nguyen Bich Thuy


TESTIMONIAL: We would like to convey our gratitude for the promptness, enthusiasm and professionalism of you and your company

CLIENT: Ms. Caroline Tan


TESTIMONIAL: Thank you for your kind gesture and goodwill which is much appreciated.

CLIENT: Ms. Dae-Young KIM


TESTIMONIAL: My best friend, Young-su Ahn who is a partner of TAEDONG IP Law Firm introduced your firm to me. I heard from him that your firm is one of the best Patent & Law firms in Vietnam and has competent Patent Attorneys and Trademark Attorneys