First of all, when the trademark is registered, the restaurant you mentioned in 45 categories belongs to 43 categories. If you apply for the trademark of friendship in 43 categories, then you have the exclusive right to use the word "friendship" in the catering category.

It is still ok for others to register "friendship" cigarettes or drinks.

On the other hand, if your friendship brand was a well-known trademark before, then other categories can't be used by others.

For example, you just said. After you register for Friendship, all the restaurants with Friendship that you apply for after that should be rejected, but if they pass, you will have to raise an objection with him. This situation will definitely go on.

If you want to do a good job of protection, apply for more trademarks like "intentional" and "Youyi" in restaurants.

Otherwise, someone who applies for Youyi Restaurant may still be approved, and you will have to raise an objection at that time.