The World Intellectual Property Organization (WIPO) governs the international trademark service, which offers a streamlined process for obtaining trademark protection in multiple countries through a single application. WIPO administers the Madrid Agreement and its accompanying protocol, the Madrid Protocol, which simplifies administrative procedures and reduces costs associated with filing separate trademark applications in each desired country. The international trademark service offered by WIPO through the Madrid System provides a convenient and efficient way to secure trademark protection in multiple jurisdictions.
Here are the key features of the international trademark service:

1. Centralized Application  
2. Designated Countries 
3. Examination and Registration
4. Centralized Management
5. Cost and Time Efficiency
6. Expansion Flexibility

The international trademark service simplifies the process of obtaining trademark protection in multiple countries. However, it does not provide a unified global trademark registration. Each national or regional trademark office retains its sovereignty and examines applications according to its laws and regulations.