Manual of Patent Examining Procedure - MPEP

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2200 Citation of Prior Art and Ex Parte Reexamination of Patents

2226 Initial Processing of Request for Ex Parte Reexamination

The opening of all mail marked " Mail Stop Ex Parte Reexam," and all initial clerical processing of requests for reexamination, will be performed by the reexamination preprocessing staff in the Office of Patent Legal Administration, Central Reexamination Unit.

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