A trademark must be used in commerce at any time within five years.
The amount of use can be minimal and must satisfy the following conditions:
- the mark must be affixed to goods, packages of goods, means of business or supplying services and communicating papers in business activities
- the mark must be used in circulating, or offering, advertising, storing for sale of, goods
- the mark must be used in importation of goods
Use of the trademark must occur in Vietnam.