37 C.F.R. § 42.203
Post-grant review fee
(a) A post-grant review fee set forth in § 42.15(b) must accompany the petition.
(b) No filing date will be accorded to the petition until full payment is received.
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(a) A post-grant review fee set forth in § 42.15(b) must accompany the petition.
(b) No filing date will be accorded to the petition until full payment is received.