(a) If the number or nature of the amendments or the legibility of the application papers
renders it difficult to consider the application, or to arrange the papers for printing
or copying, the Office may require the entire specification, including the claims,
or any part thereof, be rewritten.
(b) Subject to § 1.312, a substitute specification, excluding the claims, may be filed at any point up to
payment of the issue fee if it is accompanied by a statement that the substitute specification
includes no new matter.
(c) A substitute specification submitted under this section must be submitted with markings
showing all the changes relative to the immediate prior version of the specification
of record. The text of any added subject matter must be shown by underlining the added text. The text of any deleted matter must be shown by strike-through except that double
brackets placed before and after the deleted characters may be used to show deletion
of five or fewer consecutive characters. The text of any deleted subject matter must be shown by being placed within double
brackets if strike-through cannot be easily perceived. An accompanying clean version (without markings) must also be supplied. Numbering the paragraphs of the specification of record is not considered a change
that must be shown pursuant to this paragraph.
(d) A substitute specification under this section is not permitted in a reissue application
or in a reexamination proceeding.
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