37 CFR 1.502 : Patents, Trademarks, And Copyrights (§ 1.1 To Chapter V) — (§ 1.1 To Chapter V) — United States Patent And Trademark Office, Department Of Commerce (§ 1.1 To Parts 151-199) — General (§ 1.1 To §§ 5.31-5.33) — Rules Of Practice In Patent Cases (§ 1.1 To § 1.1071) — Ex Parte Reexamination Of Patents (§ 1.501 To § 1.570) — Citation Of Prior Art And Written Statements (§ 1.501 And § 1.502) — Processing of prior art citations during an ex parte reexamination proceeding.

Citations by the patent owner under § 1.555 and by an ex parte reexamination requester under either § 1.510 or § 1.535 will be entered in the reexamination file during a reexamination proceeding. The entry in the patent file of citations submitted after the date of an order to reexamine pursuant to § 1.525 by persons other than the patent owner, or an ex parte reexamination requester under either § 1.510 or § 1.535, will be delayed until the reexamination proceeding has been concluded by the issuance and publication of a reexamination certificate. See § 1.902 for processing of prior art citations in patent and reexamination files during an inter partes reexamination proceeding filed under § 1.913.