MPEP § 2136.04 — Different Inventive Entity; Meaning of “By Another” (Annotated Rules)

§2136.04 Different Inventive Entity; Meaning of “By Another”

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

This page consolidates and annotates all enforceable requirements under MPEP § 2136.04, 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.

Different Inventive Entity; Meaning of “By Another”

This section addresses Different Inventive Entity; Meaning of “By Another”. Primary authority: 35 U.S.C. 100 and 35 U.S.C. 102(e). Contains: 9 statements.

Key Rules

Topic

AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)

6 rules
StatutoryInformativeAlways
[mpep-2136-04-631309723f652d71eaa88159]
Requirement for Different Inventors
Note:
The rule states that 'another' means a different inventive entity, which is true if not all inventors are the same in an application and reference.

“Another” means other than applicants, In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966), in other words, a different inventive entity. The inventive entity is different if not all inventors are the same. The fact that the application and reference have one or more inventors in common is immaterial. Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection based on an issued U.S. patent to three inventors. The rejected application was a continuation-in-part of the issued parent with an extra inventor. The Board found that the patent was “by another” and thus could be used in a pre-AIA 35 U.S.C. 102(e) / 103 rejection of the application.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-2136-04-60f271de7aeeecb4f75d5f15]
Inventive Entity Is Different If Not All Inventors Are the Same
Note:
The inventive entity is considered different if there are not all the same inventors in an application and a reference, regardless of any shared inventors.

“Another” means other than applicants, In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966), in other words, a different inventive entity. The inventive entity is different if not all inventors are the same. The fact that the application and reference have one or more inventors in common is immaterial. Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection based on an issued U.S. patent to three inventors. The rejected application was a continuation-in-part of the issued parent with an extra inventor. The Board found that the patent was “by another” and thus could be used in a pre-AIA 35 U.S.C. 102(e) / 103 rejection of the application.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-2136-04-e8fca4b18498b18b6923d675]
Common Inventors Do Not Establish Prior Art Under AIA 102(a)(2)
Note:
The presence of common inventors between an application and a reference does not establish that the reference is by another inventive entity under AIA 35 U.S.C. 102(a)(2).

“Another” means other than applicants, In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966), in other words, a different inventive entity. The inventive entity is different if not all inventors are the same. The fact that the application and reference have one or more inventors in common is immaterial. Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection based on an issued U.S. patent to three inventors. The rejected application was a continuation-in-part of the issued parent with an extra inventor. The Board found that the patent was “by another” and thus could be used in a pre-AIA 35 U.S.C. 102(e) / 103 rejection of the application.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-2136-04-051f0bf5a5f3628230df7131]
Continuation-In-Part with Extra Inventor Is by Another
Note:
A continuation-in-part application with an extra inventor is considered by another for AIA 102(a)(2) earlier filed applications.

“Another” means other than applicants, In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966), in other words, a different inventive entity. The inventive entity is different if not all inventors are the same. The fact that the application and reference have one or more inventors in common is immaterial. Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection based on an issued U.S. patent to three inventors. The rejected application was a continuation-in-part of the issued parent with an extra inventor. The Board found that the patent was “by another” and thus could be used in a pre-AIA 35 U.S.C. 102(e) / 103 rejection of the application.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-2136-04-b3f91d069dc260bb829ccbcf]
Use of Earlier Filed U.S. Patent as Reference Against Later Application
Note:
The Milburn rule allows a U.S. patent containing the invention's disclosure to be used as a reference against a later filed application from the filing date, indicating the inventor was not first.

As stated by the House and Senate reports on the bills enacting section pre-AIA 35 U.S.C. 102(e) as part of the 1952 Patent Act, this subsection of 102 codifies the Milburn rule of Milburn v. Davis-Bournonville, 270 U.S. 390, 1926 C.D. 303, 344 O.G. 817 (1926). The Milburn rule authorized the use of a U.S. patent containing a disclosure of the invention as a reference against a later filed application as of the U.S. patent filing date. The existence of an earlier filed U.S. application containing the subject matter claimed in the application being examined indicates that applicant was not the first inventor. Therefore, a U.S. patent, a U.S. patent application publication or international application publication, by a different inventive entity, whether or not the application shares some inventors in common with the patent, is prima facie evidence that the invention was made “by another” as set forth in pre-AIA 35 U.S.C. 102(e). In re Mathews, 408 F.2d 1393, 161 USPQ 276 (CCPA 1969); In re Facius, 408 F.2d 1396, 161 USPQ 294 (CCPA 1969); Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992). See MPEP § 2136.05 et seq. for discussion of methods of overcoming pre-AIA 35 U.S.C. 102(e) rejections.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)International Filing Date
StatutoryInformativeAlways
[mpep-2136-04-94c7119aa9961d10b5cba993]
Requirement for Earlier Filed Application as Prior Art
Note:
A U.S. patent, application publication, or international publication by a different inventive entity is prima facie evidence that the invention was made 'by another' under pre-AIA 35 U.S.C. 102(e).

As stated by the House and Senate reports on the bills enacting section pre-AIA 35 U.S.C. 102(e) as part of the 1952 Patent Act, this subsection of 102 codifies the Milburn rule of Milburn v. Davis-Bournonville, 270 U.S. 390, 1926 C.D. 303, 344 O.G. 817 (1926). The Milburn rule authorized the use of a U.S. patent containing a disclosure of the invention as a reference against a later filed application as of the U.S. patent filing date. The existence of an earlier filed U.S. application containing the subject matter claimed in the application being examined indicates that applicant was not the first inventor. Therefore, a U.S. patent, a U.S. patent application publication or international application publication, by a different inventive entity, whether or not the application shares some inventors in common with the patent, is prima facie evidence that the invention was made “by another” as set forth in pre-AIA 35 U.S.C. 102(e). In re Mathews, 408 F.2d 1393, 161 USPQ 276 (CCPA 1969); In re Facius, 408 F.2d 1396, 161 USPQ 294 (CCPA 1969); Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992). See MPEP § 2136.05 et seq. for discussion of methods of overcoming pre-AIA 35 U.S.C. 102(e) rejections.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Publication Language
Topic

Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)

2 rules
StatutoryInformativeAlways
[mpep-2136-04-e108d97fe39b1c6f760a5b60]
Patent by Another Inventor Can Be Used in Rejection
Note:
A patent by a different inventive entity can be used to reject an application under pre-AIA 35 U.S.C. 102(e) and 103.

“Another” means other than applicants, In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966), in other words, a different inventive entity. The inventive entity is different if not all inventors are the same. The fact that the application and reference have one or more inventors in common is immaterial. Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection based on an issued U.S. patent to three inventors. The rejected application was a continuation-in-part of the issued parent with an extra inventor. The Board found that the patent was “by another” and thus could be used in a pre-AIA 35 U.S.C. 102(e) / 103 rejection of the application.).

Jump to MPEP SourcePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)PTAB Jurisdiction
StatutoryInformativeAlways
[mpep-2136-04-b6279f55039a9a47075de10a]
Written Description Requirement for Prior Art Under AIA 35 U.S.C. 102(e)
Note:
The rule requires that a U.S. patent or application containing the same invention as claimed in a later-filed application serves as prima facie evidence of prior invention by another.

As stated by the House and Senate reports on the bills enacting section pre-AIA 35 U.S.C. 102(e) as part of the 1952 Patent Act, this subsection of 102 codifies the Milburn rule of Milburn v. Davis-Bournonville, 270 U.S. 390, 1926 C.D. 303, 344 O.G. 817 (1926). The Milburn rule authorized the use of a U.S. patent containing a disclosure of the invention as a reference against a later filed application as of the U.S. patent filing date. The existence of an earlier filed U.S. application containing the subject matter claimed in the application being examined indicates that applicant was not the first inventor. Therefore, a U.S. patent, a U.S. patent application publication or international application publication, by a different inventive entity, whether or not the application shares some inventors in common with the patent, is prima facie evidence that the invention was made “by another” as set forth in pre-AIA 35 U.S.C. 102(e). In re Mathews, 408 F.2d 1393, 161 USPQ 276 (CCPA 1969); In re Facius, 408 F.2d 1396, 161 USPQ 294 (CCPA 1969); Ex parte DesOrmeaux, 25 USPQ2d 2040 (Bd. Pat. App. & Inter. 1992). See MPEP § 2136.05 et seq. for discussion of methods of overcoming pre-AIA 35 U.S.C. 102(e) rejections.

Jump to MPEP SourcePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA Practice
Topic

Statutory Authority for Examination

1 rules
StatutoryInformativeAlways
[mpep-2136-04-3a3b6c07319a3a933cfce1b4]
First Inventor to File Provisions Not Applicable
Note:
This rule does not apply to applications subject to examination under the first inventor to file provisions of the AIA. Use MPEP sections for FITF examination.

[Editor Note: This MPEP section is not applicable to applications subject to examination under the first inventor to file (FITF) provisions of the AIA as set forth in 35 U.S.C. 100 (note). See MPEP § 2159 et seq. to determine whether an application is subject to examination under the FITF provisions, and MPEP § 2150 et seq. for examination of applications subject to those provisions.]

Jump to MPEP SourceStatutory Authority for ExaminationExamination ProceduresFirst Inventor to File (FITF) System

Citations

Primary topicCitation
Statutory Authority for Examination35 U.S.C. § 100
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(e)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
MPEP § 2136.05
Statutory Authority for ExaminationMPEP § 2150
Statutory Authority for ExaminationMPEP § 2159
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
In re Facius, 408 F.2d 1396, 161 USPQ 294 (CCPA 1969)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
In re Land, 368 F.2d 866, 151 USPQ 621 (CCPA 1966)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
In re Mathews, 408 F.2d 1393, 161 USPQ 276 (CCPA 1969)

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