Is restriction permitted in reexamination proceedings?

No, restriction is not permitted in reexamination proceedings. The MPEP clearly states:

With regard to reexamination proceedings, restriction is not permitted.”

This means that during a reexamination of a patent, the examiner cannot require the patent owner to divide the claims into separate applications or to elect a specific group of claims for examination. All claims must be examined together in a reexamination proceeding.

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Tags: patent examination, reexamination