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See MPEP § 2363.03.
See MPEP § 1214.06, § 1215.03, and § 1215.04.
Where a patent application which is ready for issue refers by application number to a U.S. nonprovisional application which has matured into a patent, the examiner is authorized to enter the patent number without a formal examiner's amendment. This entry should be in the following form: ", Patent No. .........". The entry is to be initialed and dated in the margin by the examiner to fix responsibility for the same. The entry and the initials should be in red ink.
If the nonprovisional application referred to has become abandoned, the entry "abandoned" should be made in red ink, and initialed and dated by the examiner in the margin. A formal examiner's amendment is not required.
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