Name similarity: don’t panic, don’t ignore
Finding a similar name doesn't mean you have to abandon it immediately, but it also doesn't mean it's safe to proceed without verification.
Let the industrial property representative assess the likelihood of confusion based on two main factors: the similarity of the signs and the relevance between the goods and services of both parties. If the risk is high, changing the name early is the cheapest option; if the risk is low and both parties are in different industries, consider a coexistence agreement. The earlier you detect it, the more options you have and the less loss you incur.
- Changing the name early when the risk of confusion is high, in the same industry, the brand is still new.
- adjust to be sufficiently different when the overlap is in a minor factor
- coexistence when both sides are from different industries, different regions, with low risk
- Thinking differently without expert opinions.
- Try to keep the name at all costs despite significant investment, sinking deeper.
In the process of choosing a brand name, encountering a similar name in the trademark database is a more common situation than you might think. The wrong reactions here are often one of two extremes: panicking and abandoning the name immediately without careful evaluation, or ignoring it because they think "it's just a little different." Both can cause damage. The right approach is to pause, assess the level of risk accurately, and then decide.
Two factors determine risk levels
According to the evaluation framework of the USPTO (United States Patent and Trademark Office) and INTA (International Trademark Association), this is foreign guidance, meant only to reference a way of thinking; when applied in Vietnam, the basis is the Intellectual Property Law and the assessment of the competent domestic authority. The likelihood of confusion between two trademarks primarily depends on two factors:
- Similarity of signs: Considered in terms of written form, pronunciation, and meaning, not just visually. Two names may be spelled differently but sound similar or translate to the same meaning, still posing a risk of confusion.
- Relevance of goods and services: Two brands in the same industry have a much higher risk of confusion compared to those in completely different industries. The principle is: the more similar the signs, the less related the goods need to be to still cause confusion.
In addition to these two core factors, it is also necessary to consider whether the label has been officially registered, is pending approval, or is only in practical use without registration. These three states have different levels of legal risk and require evaluation by an industrial property expert.
The more similar the signs, the less related the goods need to be, which can still create confusion in the eyes of consumers.
USPTO, Likelihood of Confusion
Three approaches to handle and when to choose which direction
Changing the name definitively is the most reasonable direction when the risk of confusion is high, both parties are in the same industry, and the brand is still in the early stages, not having accumulated much recognition with that name. Changing the name at this stage is much less costly than changing it after investing in communication, design, and community building.
Changing the name to something distinctly different is an option when the overlap is in a secondary element, not the main distinguishing factor, and can add a strong enough element to create a completely different commercial impression. This direction requires expert confirmation that the change is indeed sufficient to avoid danger.
A coexistence agreement is a document signed by both parties to use similar signs together, typically by dividing industries, geographical areas, or distribution channels. This approach is suitable when the two parties are in different industries, have good intentions, and the risk of actual confusion is low. This is not a one-size-fits-all solution and still requires a lawyer to draft. In Vietnam, the Intellectual Property Office carefully considers the consent letter from the trademark owner, so it cannot be assumed to be accepted.
Common mistakes when self-processing
- Decide "a little different is enough" without expert input, then face opposition after extensive communication.
- Only compare written names, overlooking phonetic or semantic similarities when translated into other languages.
- Trying to keep the name because a lot has been invested; the deeper you go, the higher the cost of changing later.
- Ignore unregistered brands that only use practical means, thinking "they have no rights." This is an area that requires expert confirmation, not personal conclusions.
Changing the name early, when the brand has not yet built recognition around it, is the least costly option in terms of both money and time.
Practical experience.
Decision checklist
Topic: How to handle discovering a trademark name conflict. Sinh Vũ guide, sinhvu.com
Tick each item that applies or that you can already answer, then print or save as PDF to take with you.
If you have marked most of the signs above, this is the time to discuss in more detail. Sinh Vũ can help you review and propose a direction.
This article provides general information according to the documents in effect as of October 6, 2026. This is not legal advice and does not substitute for a lawyer's opinion for your specific case. Rights and obligations between Sinh Vũ and clients arise only according to the signed contract.
References
USPTO, Likelihood of Confusion; INTA, Considerations in Selecting a Trademark; World Trademark Review, coexistence agreements; Brand consulting practice at Sinh Vũ.
Frequently asked questions
Is it a violation if the names sound similar but are written differently?
It is possible. The trademark office assesses the likelihood of confusion based on both the written form, pronunciation, and meaning, not just the appearance of the words. Two names that sound similar in the same industry can still be considered confusing. You need expert opinions to evaluate correctly; do not make judgments on your own.
If the other party has not registered the trademark, am I safe?
Not entirely. In Vietnam, trademark rights usually arise from registration, but well-known trademarks and legally used trade names, along with regulations against unfair competition, can still protect the prior user. This is an area that requires specific consideration from industrial property experts; one should not conclude safety just because the other party does not have a certificate yet.
What is a coexistence agreement and when is it used?
A coexistence agreement is a document signed by both parties to use similar signs together, typically by dividing industries, geographical areas, or distribution channels. This approach is suitable when the two parties are in different industries, have good intentions, and the risk of actual confusion is low. This is not a one-size-fits-all solution and still requires a lawyer to draft. In Vietnam, the Intellectual Property Office carefully considers the consent letter from the trademark owner, so it cannot be assumed to be accepted.
This article is for reference. The scope, pricing, and specific commitments of Sinh Vũ are detailed in the proposal and signed contract.