This question relates to two separate issues – registration vs. use – and the answer depends upon what one is really asking. While there is no prohibition against using a mark that is different from the one applied for, such usage might not support the trademark application.

An applicant must eventually submit to the MyIPO evidence that the applied-for mark is being used in commerce on the goods and/or services identified in the application. This means that the mark used in connection with the products or services must exactly match the mark applied for. Failure to do so will generally lead to an abandonment of the application unless the mark as used is not materially different from the mark as applied for.