What is MPEP 821.04 and how does it relate to rejoinder of claims?

MPEP 821.04 is a section of the Manual of Patent Examining Procedure that provides detailed guidance on the rejoinder of claims. The MPEP 1302.04(h) specifically references this section: “See MPEP § 821.04.” MPEP 821.04 covers various aspects of rejoinder, including: Conditions for rejoinder of non-elected inventions Rejoinder of process claims Rejoinder of product claims Procedures…

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