MPEP 608.04
New Matter

This is the Ninth Edition of the MPEP, Revision 08.2017, Last Revised in January 2018

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608.04    New Matter [R-07.2015]

37 C.F.R. 1.121 Manner of making amendments in applications.


  • (f) No new matter. No amendment may introduce new matter into the disclosure of an application.


In establishing a disclosure, applicant may rely not only on the specification and drawing as filed but also on the claims present on the filing date of the application if their content justifies it. See MPEP § 608.01(l).

While amendments to the specification and claims involving new matter are ordinarily entered, such matter is required to be canceled from the descriptive portion of the specification, and the claims affected are rejected under 35 U.S.C. 112(a).

When new matter is introduced into the specification, the amendment should be objected to under 35 U.S.C. 132 (35 U.S.C. 251 if a reissue application) and a requirement made to cancel the new matter. The subject matter which is considered to be new matter must be clearly identified by the examiner. If the new matter has been entered into the claims or affects the scope of the claims, the claims affected should be rejected under 35 U.S.C. 112(a) because the new matter is not described in the application as originally filed.

A "new matter" amendment of the drawing is ordinarily not entered; neither is an additional or substitute sheet containing "new matter" even though provisionally entered by the TC technical support staff. See MPEP § 608.02(h).

The examiner’s holding of new matter may be petitionable or appealable. See MPEP § 608.04(c).

For new matter in reissue application, see MPEP § 1411.02. For new matter in substitute specification, see MPEP § 608.01(q). For new matter in a continuation or divisional application, see MPEP § 211.05.

Note: No amendment is permitted in a provisional application after it receives a filing date.