Complete worldwide trademark protection through a single registration is not possible. Trademark rights are territorial and class-specific; protection applies only in the countries and classes where the trademark is registered.
The most practical approach for multi-country protection is to register in the markets where you are commercially active or plan to expand, and to add further jurisdictions over time. The Madrid System (WIPO) allows a single application to designate multiple countries simultaneously, which is cost-efficient for five or more countries.
Plan your international trademark strategy with Trama; free initial consultation available.