Trademark rules

Hello. I plan to purchase a beautiful domain for a project and develop an application for App store.

When searching on App store., it turns out that there are already applications with the same name.

Can I use the same name for my application?

What criteria should I use to determine if someone already has rights to this trademark, and what is Apple policy on this matter?

Are there criteria for how popular, active, and supported an application must be before using the same name?

Trademark rules
 
 
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