The presence of major telecommunications firms has grown significantly in Vietnam – a member of the Association of Southeast Asian Nations (ASEAN) – opening up manufacturing facilities and expanding sales there. Strategic considerations, low labour costs and a positive IP environment have also contributed to this development. Further, until now patent litigation has been largely focused on pharmaceutical patents, with preliminary injunctions still extremely difficult to obtain. As a result, telecommunications outfits are less exposed to challenges to their Vietnamese patent pools. Finally, the EU-Vietnam Trade Agreement – which was signed last year – signifies the government’s determination to bolster its IP system.


  • Pham & Associates
  • Tilleke & Gibbins
  • Vision & Associates
  • Ambys
  • BMVN LLC, a member of Baker McKenzie
  • D&N International
  • Rouse Legal
  • Winco Co Ltd
  • VCCI-IP Co Ltd


Ambys is a venerable name in the Vietnamese IP world. The nimble team of 10 IP professionals comprises technically qualified individuals, who make light work of patent prosecution briefs. Managing partner Thu Anh Nguyen has close to three decades of experience as a registered patent and trademark attorney, in addition to seven years as an examiner at the National Office of Intellectual Property of Vietnam (NOIP).

BMVN LLC, a member of Baker McKenzie

As the local set-up of global behemoth Baker McKenzie, BMVN delivers a seamless patent service in terms of rigour, delivery and international awareness. Manh Hung Tran is an extremely effective adviser whose tailored advice suits a wide range of clients and stakeholders. His recent feats include advising and executing large filing exercises in Vietnam and abroad for foreign and Vietnamese telecommunications firms, achieving a superb grant rate. Cognisant of the demands and challenges of individual inventors, he also assisted a Vietnamese start-up in procuring protection in the United States. His legal expertise is well recognised by Vietnamese authorities, which invited him to review the country’s IP laws while foreign associates marvel at his “lightning responsiveness”, “hands-on approach” and a service that is good value for money.

D&N International

Founded in 1992, D&N International is a household name in the Vietnamese IP field that does a sterling job of keeping abreast of international patent developments and technical subject matters. As an illustration of the latter, three out of four partners there possess a technical degree. One of these is Thuy Dang, a bright and energetic attorney who has spent more than 25 years in the patent trade, in which she focused on chemical and biochemical engineering.

Pham & Associates

Pham & Associates ticks many of the boxes of a top patent practice. Not only is it one of the largest patent filers in Vietnam, peers almost unanimously attest to the leading reputation of this group in the last few years of IAM Patent 1000 research, thanks to the effort of managing partner Vu Khanh Toan Pham. A former NOIP official, his ability to distil and decipher IP conundrums for multinational companies has won him a stellar reputation.

Rouse Legal

Rouse Legal presents patrons with a tantalising proposition of ASEAN-wide protection that draws on decades of its on-the-ground expertise in major Southeast Asian countries. Its status as the firm of choice for foreign authorities and quasi-government bodies is great testament to its regional knowledge. Lately, the Vietnamese team – which has welcomed two new patent specialists – has successfully executed freedom-to-operate search and advisory work for a wave of interested foreign parties. Senior patent attorney and chemical engineer Dung Vu draws on her wide in-house and private practice exposure to advise entities on the best way forward in their patent strategies. Finally, country manager Yen Vu is well connected with foreign associates and multinational companies and is recognised as an excellent IP protection strategist.

Tilleke & Gibbins

Dominating the Vietnamese patent landscape and developing in tandem with it, Tilleke & Gibbins commands more than one out of 10 of all patents filed and more than half of the invention patent litigation market in the country. Already the proud go-to service for seven out of 10 of the world’s largest pharmaceutical companies, it has grown tremendously in the electronics and mechanical field, such that it has reorganised its patent prosecution group into three divisions to cover these two technical streams. Head of patent group Thang Duc Nguyen directs the biotechnology and chemical, and electronics and mechanical divisions, which are overseen by Thanh Phuong Vu and Hung Tuan Nguyen, respectively. IP enforcement chief Loc Xuan Le and managing director Thomas Treutler form a dynamic duo that bag landmark ruling after landmark ruling.


Foreign associates are full of praise for TRUNG THUC: “it is one of the best IP teams in Vietnam. Strong dexterity, pragmatism and responsiveness aside, constant reliability distinguishes it from the rest of the pack.” Hai Yen Thieu is “an eminent practitioner” who embodies the group’s every virtue, while Viet Thang Nguyen takes great care of the needs of leading multinationals such as Panasonic and Astra Zeneca.


With an illustrious history dating back to 1984, VCCI-IP is the first IP agency in Vietnam. Under the Vietnam Chamber of Commerce and Industry, it is renowned for its high filing activity and several “loyal Japanese clients”.

Vision & Associates

At the apex of the table is Vision & Associates, a top filer in Vietnam, which provides the full gamut of patent service for major global corporations. Pham Nghiem Xuan Bac inspires a great deal of confidence, particularly in patrons who look to him for NOIP proceedings and advisory matters. His work extends to corporate law. Director of IP practice Nguyet Dzung Nguyen is another welcome choice – he has ample experience with the world’s top patent owners.

Winco Co Ltd

Founded in 2002 and therefore younger than most of the ranked firms in this chapter, Winco has risen to become a prominent player in the field. “It has a good electronics team and healthy filing numbers; it may even engage in some litigations.” Head of patent department Phung Chi Cong is a name for the contact book.

Other recommended experts

At Bross & Partners, Le Quang Vinh is a smart and cost-efficient choice for clientele with design patent, industrial design and utility model needs.


  • Pham Nghiem Xuan Bac - Vision & Associates
  • Thuy TH Dang - D&N International
  • Nguyet Dzung Nguyen - Vision & Associates
  • Loc Xuan Le - Tilleke & Gibbins
  • Hung Tuan Nguyen - Tilleke & Gibbins
  • Thang Duc Nguyen - Tilleke & Gibbins
  • Thu Anh Nguyen - Ambys
  • Viet Thang Nguyen - TRUNG THUC JSC
  • Vu Khanh Toan Pham - Pham & Associates
  • Hai Yen Thieu - TRUNG THUC JSC
  • Manh Hung Tran - BMVN LLC, a member of Baker McKenzie
  • Thomas J Treutler - Tilleke & Gibbins
  • Le Quang Vinh - Bross & Partners
  • Dung Vu - Rouse Legal
  • Thanh Phuong Vu - Tilleke & Gibbins
  • Yen Vu - Rouse Legal