MPEP § 2121.03 — Plant Genetics — What Constitutes Enabling Prior Art (Annotated Rules)

§2121.03 Plant Genetics — What Constitutes Enabling Prior Art

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

This page consolidates and annotates all enforceable requirements under MPEP § 2121.03, 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.

Plant Genetics — What Constitutes Enabling Prior Art

This section addresses Plant Genetics — What Constitutes Enabling Prior Art. Primary authority: 35 U.S.C. 102(b). Contains: 2 requirements, 1 permission, and 4 other statements.

Key Rules

Topic

Color Drawings and Photographs

2 rules
StatutoryRequiredAlways
[mpep-2121-03-18165cba28f1e4861ad3c895]
Reference Must Enable Plant Reproduction
Note:
The reference, combined with prior art knowledge, must enable one of ordinary skill in the art to reproduce the claimed plant.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourceColor Drawings and PhotographsPlant Prior Art SearchAssignee as Applicant Signature
StatutoryInformativeAlways
[mpep-2121-03-85e14f892f843b924ee3efb9]
Cotton Cultivar Can Be Grown from Commercial Seeds
Note:
A cotton cultivar can be reproduced by one of ordinary skill in the art using commercially available seeds, making the disclosures enabled.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourceColor Drawings and PhotographsPlant Prior Art SearchInventor of Discovered Plant
Topic

Assignee as Applicant Signature

2 rules
StatutoryInformativeAlways
[mpep-2121-03-0a13bae289d370b1e356aac3]
Publications Must Predate Filing Date By Over One Year
Note:
For plant patents, any reference that enables reproduction must be published more than one year before the applicant's filing date.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAColor Drawings and Photographs
StatutoryRequiredAlways
[mpep-2121-03-7fff29681291144021918bfb]
Public Domain Reproduction Not Established
Note:
The court held that publications did not place a plant in the public domain if necessary information for reproduction was missing.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAColor Drawings and Photographs
Topic

PTAB Jurisdiction

2 rules
StatutoryInformativeAlways
[mpep-2121-03-7131e499e87b515d3f0bbce1]
Catalogue Picture Is Only Evidence in In re LeGrice
Note:
The Board found that the catalogue picture of the rose was the sole evidence in In re LeGrice, distinguishing it from cases where commercial availability is demonstrated.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresColor Drawings and Photographs
StatutoryPermittedAlways
[mpep-2121-03-6f1f9bdf5685781ccd712505]
Foreign Sales Must Be Accessible and Reproducible Without Experimentation
Note:
The court agreed that foreign sales can enable a printed publication for plant claims but required additional fact-finding to determine if the skilled artisan could reproduce the plant without undue experimentation.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresColor Drawings and Photographs
Topic

Plant Patent Practice

1 rules
StatutoryInformativeAlways
[mpep-2121-03-a0cc5c71eb90e5f107a1e172]
Availability of Seeds Enables Public Possession
Note:
Public would have possession of a cotton cultivar based on publications and availability of seeds, but not for asexually reproduced rose which cannot be reproduced from seed.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourcePlant Patent PracticeColor Drawings and PhotographsPlant Prior Art Search
Topic

Pre-AIA 102(b) – Statutory Bar (MPEP 2133)

1 rules
StatutoryInformativeAlways
[mpep-2121-03-e3a5100a831898c011718bb7]
Publication Identifying Plant with Foreign Sale
Note:
When a publication identifies the plant, it is combined with a foreign sale that gives possession to one of ordinary skill in the art, allowing asexual reproduction without undue experimentation.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourcePre-AIA 102(b) – Statutory Bar (MPEP 2133)AIA vs Pre-AIA 102 (MPEP 2151)AIA vs Pre-AIA Practice
Topic
1 rules
StatutoryInformativeAlways
[mpep-2121-03-02a16744d4e0f7e4e2139ecb]
Foreign Sales Can Serve As Prior Art for Plant Patents
Note:
The rule states that foreign sales of a plant can serve as prior art if they enable one of ordinary skill in the art to reproduce the plant without undue experimentation, subject to certain conditions.

When the claims are drawn to plants, the reference, combined with knowledge in the prior art, must enable one of ordinary skill in the art to reproduce the plant. In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962) (National Rose Society Annual of England and various other catalogues showed color pictures of the claimed roses and disclosed that applicant had raised the roses. The publications were published more than 1 year before applicant's filing date. The court held that the publications did not place the rose in the public domain. Information on the grafting process required to reproduce the rose was not included in the publications and such information was necessary for those of ordinary skill in the art (plant breeders) to reproduce the rose.). Compare Ex parte Thomson, 24 USPQ2d 1618 (Bd. Pat. App. & Inter. 1992) (Seeds were commercially available more than 1 year prior to applicant’s filing date. One of ordinary skill in the art could grow the claimed cotton cultivar from the commercially available seeds. Thus, the publications describing the cotton cultivar had “enabled disclosures.” The Board distinguished In re LeGrice by finding that the catalogue picture of the rose of In re LeGrice was the only evidence in that case. There was no evidence of commercial availability in enabling form since the asexually reproduced rose could not be reproduced from seed. Therefore, the public would not have possession of the rose by its picture alone, but the public would have possession of the cotton cultivar based on the publications and the availability of the seeds.). In In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004), prior to the critical date of a plant patent application, the plant had been sold in Germany and a foreign Plant Breeder’s Rights (PBR) application for the same plant had been published in the Community Plant Variety Office Official Gazette. The court held that when (i) a publication identifies the plant, (ii) a foreign sale occurs that puts one of ordinary skill in the art in possession of the plant itself, and (iii) such possession permits asexual reproduction of the plant without undue experimentation by one of ordinary skill in the art, then that combination of facts and events directly conveys the essential knowledge of the invention and constitutes a pre-AIA 35 U.S.C. 102(b) statutory bar. Id. at 1129, 72 USPQ2d at 1041. Although the court agreed with the Board that foreign sales may enable an otherwise non-enabling printed publication, the case was remanded for additional fact-finding in order to determine if the foreign sales of the plant were known to be accessible to the skilled artisan and if the skilled artisan could have reproduced the plant asexually after obtaining it without undue experimentation. Id. at 1131, 72 USPQ2d at 1043. See MPEP § 2152.02(d) for information on foreign sales being prior art for applications subject to the first inventor to file provisions of the AIA.

Jump to MPEP SourcePlant Prior Art SearchInventor of Discovered PlantPlant Patent Examination

Citations

Primary topicCitation
Assignee as Applicant Signature
Color Drawings and Photographs
PTAB Jurisdiction
Plant Patent Practice
Plant Prior Art Search
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
35 U.S.C. § 102(b)
Assignee as Applicant Signature
Color Drawings and Photographs
PTAB Jurisdiction
Plant Patent Practice
Plant Prior Art Search
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
MPEP § 2152.02(d)
Assignee as Applicant Signature
Color Drawings and Photographs
PTAB Jurisdiction
Plant Patent Practice
Plant Prior Art Search
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
In re Elsner, 381 F.3d 1125, 1126, 72 USPQ2d 1038, 1040 (Fed. Cir. 2004)
Assignee as Applicant Signature
Color Drawings and Photographs
PTAB Jurisdiction
Plant Patent Practice
Plant Prior Art Search
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
In re LeGrice, 301 F.2d 929, 133 USPQ 365 (CCPA 1962)

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