After filing of a request for ex parte reexamination under 35 U.S.C. 302, no papers directed to the merits of the reexamination other than (A) citations of patents or printed publications under 37 CFR 1.501 or 37 CFR 1.555, (B) another complete request under 37 CFR 1.510 or 37 CFR 1.915, or (C) notifications pursuant to MPEP § 2282, should be filed with the Office prior to the date of the decision on the request for reexamination. Any papers directed to the merits of the reexamination other than those under 37 CFR 1.501 or 1.555, or MPEP § 2282, filed prior to the decision on the request will be returned to the sender by the Central Reexamination Unit or Technology Center Director without consideration. If the papers are entered prior to discovery of the impropriety, such papers will be expunged from the record. A copy of the letter providing notification of the returned papers or expungement will be made of record in the patent file. However, no copy of the returned/expunged papers will be retained by the Office. If the submission of the returned/expunged papers is appropriate later in the proceedings, they may be filed and accepted by the Office at that time. See Patlex Corp. v. Mossinghoff, 771 F.2d 480, 226 USPQ 985, 989 (Fed. Cir. 1985); In re Knight, 217 USPQ 294 (Comm’r Pat. 1982) and In re Amp, 212 USPQ 826 (Comm’r Pat. 1981).