What is the difference between a ‘country’ and a ‘regional patent office’ in the context of foreign priority claims?

In the context of foreign priority claims, there’s an important distinction between a ‘country’ and a ‘regional patent office’: Country: A sovereign nation that has its own patent system and can issue patents directly. Regional Patent Office: An intergovernmental organization that processes patent applications on behalf of multiple member countries. The MPEP states: The right…

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