Getting a worldwide trademark is not a straightforward process, but comprehensive international coverage can be achieved through a combination of filing routes.
The most efficient route for multiple jurisdictions is the Madrid System. File a base application in your home country, then file an international application through WIPO designating the additional countries where you want protection. Each designated country examines the application under its own rules.
For countries outside the Madrid System, direct national applications must be filed with each country's IP office separately. Regional systems such as the EUIPO (covering all 27 EU member states) can reduce the number of individual filings needed in some areas.
Before filing in multiple countries, conduct a trademark search in each target market to identify existing similar registrations that could lead to opposition or refusal.