What are the differences between recognized countries and regional patent offices for foreign filing?

What are the differences between recognized countries and regional patent offices for foreign filing? Recognized countries and regional patent offices both play important roles in foreign patent filing, but they have distinct characteristics. According to MPEP 213.01: A ‘recognized’ country is one that meets the conditions of 35 U.S.C. 119(a)-(d), which include extending similar patent…

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