MPEP § 2115 — Material or Article Worked Upon by Apparatus (Annotated Rules)

§2115 Material or Article Worked Upon by Apparatus

USPTO MPEP version: BlueIron's Update: 2026-01-10

This page consolidates and annotates all enforceable requirements under MPEP § 2115, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Material or Article Worked Upon by Apparatus

This section addresses Material or Article Worked Upon by Apparatus. Contains: 5 statements.

Key Rules

Topic

Obviousness

5 rules
MPEP GuidanceInformativeAlways
[mpep-2115-bc62234480f726e12c3282db]
Structure Not Required for Obviousness
Note:
The structure of a machine is not required to be novel if the reference teaches the same functionality, regardless of the intended use.

In In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967), an apparatus claim recited “[a] taping machine comprising a supporting structure, a brush attached to said supporting structure, said brush being formed with projecting bristles which terminate in free ends to collectively define a surface to which adhesive tape will detachably adhere, and means for providing relative motion between said brush and said supporting structure while said adhesive tape is adhered to said surface.” An obviousness rejection was made over a reference to Kienzle which taught a machine for perforating sheets. The court upheld the rejection stating that “the references in claim 1 to adhesive tape handling do not expressly or impliedly require any particular structure in addition to that of Kienzle.” Id. at 580-81. The perforating device had the structure of the taping device as claimed, the difference was in the use of the device, and “the manner or method in which such machine is to be utilized is not germane to the issue of patentability of the machine itself.” Id. at 580.

MPEP GuidanceInformativeAlways
[mpep-2115-d28f957846ccac12a2665a94]
Structure Over Function
Note:
The rule states that the structure of a machine is more important than its function when determining patentability, even if the reference teaches a different use.

In In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967), an apparatus claim recited “[a] taping machine comprising a supporting structure, a brush attached to said supporting structure, said brush being formed with projecting bristles which terminate in free ends to collectively define a surface to which adhesive tape will detachably adhere, and means for providing relative motion between said brush and said supporting structure while said adhesive tape is adhered to said surface.” An obviousness rejection was made over a reference to Kienzle which taught a machine for perforating sheets. The court upheld the rejection stating that “the references in claim 1 to adhesive tape handling do not expressly or impliedly require any particular structure in addition to that of Kienzle.” Id. at 580-81. The perforating device had the structure of the taping device as claimed, the difference was in the use of the device, and “the manner or method in which such machine is to be utilized is not germane to the issue of patentability of the machine itself.” Id. at 580.

MPEP GuidanceInformativeAlways
[mpep-2115-828ff97f4f37962f9cb96f95]
Use of Machine Not Limiting
Note:
The court held that the manner in which a machine is used does not limit its patentability, as long as the structure claimed is present.

In In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967), an apparatus claim recited “[a] taping machine comprising a supporting structure, a brush attached to said supporting structure, said brush being formed with projecting bristles which terminate in free ends to collectively define a surface to which adhesive tape will detachably adhere, and means for providing relative motion between said brush and said supporting structure while said adhesive tape is adhered to said surface.” An obviousness rejection was made over a reference to Kienzle which taught a machine for perforating sheets. The court upheld the rejection stating that “the references in claim 1 to adhesive tape handling do not expressly or impliedly require any particular structure in addition to that of Kienzle.” Id. at 580-81. The perforating device had the structure of the taping device as claimed, the difference was in the use of the device, and “the manner or method in which such machine is to be utilized is not germane to the issue of patentability of the machine itself.” Id. at 580.

MPEP GuidanceInformativeAlways
[mpep-2115-46a9d960858917db06471c67]
Use of Machine Does Not Affect Patentability
Note:
The manner in which a machine is used does not affect its patentability as long as the structure claimed is present.

In In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967), an apparatus claim recited “[a] taping machine comprising a supporting structure, a brush attached to said supporting structure, said brush being formed with projecting bristles which terminate in free ends to collectively define a surface to which adhesive tape will detachably adhere, and means for providing relative motion between said brush and said supporting structure while said adhesive tape is adhered to said surface.” An obviousness rejection was made over a reference to Kienzle which taught a machine for perforating sheets. The court upheld the rejection stating that “the references in claim 1 to adhesive tape handling do not expressly or impliedly require any particular structure in addition to that of Kienzle.” Id. at 580-81. The perforating device had the structure of the taping device as claimed, the difference was in the use of the device, and “the manner or method in which such machine is to be utilized is not germane to the issue of patentability of the machine itself.” Id. at 580.

MPEP GuidanceInformativeAlways
[mpep-2115-a7a4f45174b778d35ccccb90]
Manner of Use Not Relevant to Machine Patentability
Note:
The manner in which a machine is used does not affect its patentability as long as the structure meets the claim requirements.

In In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967), an apparatus claim recited “[a] taping machine comprising a supporting structure, a brush attached to said supporting structure, said brush being formed with projecting bristles which terminate in free ends to collectively define a surface to which adhesive tape will detachably adhere, and means for providing relative motion between said brush and said supporting structure while said adhesive tape is adhered to said surface.” An obviousness rejection was made over a reference to Kienzle which taught a machine for perforating sheets. The court upheld the rejection stating that “the references in claim 1 to adhesive tape handling do not expressly or impliedly require any particular structure in addition to that of Kienzle.” Id. at 580-81. The perforating device had the structure of the taping device as claimed, the difference was in the use of the device, and “the manner or method in which such machine is to be utilized is not germane to the issue of patentability of the machine itself.” Id. at 580.

Citations

Primary topicCitation
ObviousnessIn re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967)
In re Otto, 312 F.2d 937, 136 USPQ 458, 459 (CCPA 1963)
In re Young, 75 F.2d 996, 25 USPQ 69 (CCPA 1935)

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2026-01-10