Prosecution Insights
Last updated: April 19, 2026
Application No. 18/393,468

LETTUCE VARIETY NUN 06346 LTL

Final Rejection §112
Filed
Dec 21, 2023
Examiner
ABRAHAM, AMJAD A
Art Unit
1663
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nunhems B.V.
OA Round
2 (Final)
30%
Grant Probability
At Risk
3-4
OA Rounds
3y 9m
To Grant
67%
With Interview

Examiner Intelligence

Grants only 30% of cases
30%
Career Allow Rate
97 granted / 322 resolved
-29.9% vs TC avg
Strong +37% interview lift
Without
With
+36.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
11 currently pending
Career history
333
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
49.9%
+9.9% vs TC avg
§102
15.1%
-24.9% vs TC avg
§112
23.9%
-16.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 322 resolved cases

Office Action

§112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Applicant’s response on November 12, 2025 is noted. Claim objection to claim 25 is withdrawn due to applicant’s amendment of claim 25 in response on November 12, 2025. The written description rejection of claims 1-25 are maintained from the CTNF on 8/12/2025. Applicant argues the following: USPTO has already decided that the breeding history is not required in the specification and that a seed deposit is sufficient to comply with 35 USC 112. Point 1: USPTO has already decided that the breeding history is not required in the specification. This is incorrect, that letter only reaffirms that that 35 USC 112 governs the central question and that analysis under 112 should govern. Applicant references the following sentence “However, the USPTO allows applicants to satisfy 112 by making a deposit….” But fails to cite the sentence that comes later in that same paragraph which states “It is from that deposit that the public would be enabled to make and use the claimed invention as required by 112.” This sentence clarifies the long-held understanding that a deposit can satisfy enablement issues. “Make and Use” is cited to reference enablement. Point 2: The applicant wants the USPTO to take the interpretation of that letter allows all of 112 to be satisfied by a deposit. Assuming arguendo that this is true, that means that applicant need not provide any written description in situations where biological deposits are made. That means that there could be no specification description other than the recitation of the deposit. Is applicant really suggesting that a trait table is not necessary either? How would anyone understand what the invention is without an adequate written description. It is clear that the letter reference of 112 being satisfied by a deposit was primarily limited to the enablement question. Applicant further argues that PTAB and the Federal Circuit make clear that a deposit can satisfy written description. Applicant further argues that USPTO does not cite persuasive or binding authority that the applicant must provide the breeding history of the claimed variety. Point 1: The office does treat the deposit as part of the written description. In fact, the office often allows the applicant to add traits to the specification and/or breeding history information via their deposit without it being considered new matter. Where we differ is that that deposit cannot supplement all other necessary/adequate written description. Point 2: Federal circuit or PTAB positions are not needed for two reasons: (1) The 112 statute is the law of the land and (2) the question in front of us is a question of fact and not a question of law. 35 U.S.C. 112(a) and the first paragraph of pre-AIA 35 U.S.C. 112 require that the "specification shall contain a written description of the invention ...." This requirement is separate and distinct from the enablement requirement. This means that the written description must be in the specification and not anywhere else. Applicant’s current response to 105 request is not sufficient to overcome the statutory requirement that that information be in the specification. Applicant further argues that Ex Parte C has rejected the position that a breeding history is necessary. Ex parte C was very limited and only rejected the position that a breeding history should be added just to permit examination and search. Our current position follows the statute and provides a factual basis as to what is the understanding of the minimum description of a plant. Examiner will now summarize our WD position to provide a clear understanding of our position. 35 USC 112 (a) states that “The specification shall contain a written description of the invention”. In evaluating written description, the threshold question is what is “an adequate written description”. This is question of fact that is evaluated by the factfinder (examiner). MPEP 2163.04 clearly states that “The inquiry into whether the description requirement is met must be determined on a case-by-case basis and is a question of fact. In re Wertheim, 541 F.2d 257, 262, 191 USPQ 90, 96 (CCPA 1976).” The instant invention is a new Lettuce variety (NUN 06346 LTL). So, the examiner will evaluate what is an adequate written description for a new lettuce variety. In reviewing this question of fact, the examiner analyzed how plant varieties are evaluated in the public domain. The review concluded that generally the minimum requirements for an adequate description of a new plant variety has a trait table and genetic information (via a breeding history). In reviewing applicant’s specification there is a phenotypic description as is seen in table 1. However, there is no accompanying breeding history in the specification. Because the specification lacks a breeding history and that breeding history is part of the minimum description of a plant variety the applicant has not fulfilled the requirement of 35 USC 112(a) to provide a written description in the specification. The office’s reasonable basis for challenging the adequacy of written description is informed by a review of the following: With regard to Plant Patents, MPEP 1605 states that a complete detailed description of a plant includes “the origin or parentage”. A breeding history, including information about parentage and breeding methodology, is part of the requirements of Plant Variety Protection (PVP) applications. That information is used to “determine if development is sufficient to consider the variety new” (See “Applying for a Plant Variety Certificate of Protection”, USDA, https://www.ams.usda.gov/services/pv po/application-help/apply, downloaded 05/01/2023, (U)). The International Union for the Protection of New Varieties of Plants (UPOV) considers breeding history and methodology part of its evaluation of essentially derived plant varieties (UPOV, Explanatory Notes on Essentially Derived Varieties Under the 1991 Act of the UPOV Convention, April 6, 2017, See UPOV EDV Explanatory Notes 14 and 30 (V)). Historically, the USPTO has considered breeding history information when determining the patentability of a new plant variety. (See Ex Parte C (USPQ 2d 1492 (1992) (W) and Ex Parte McGowen Board Decision in Application 14/996,093, decided June 15, 2020 (X)). In both of these cases, there were many differences cited by the Applicant when comparing the prior art and the new plant variety. However, because the breeding history was available, these differences were deemed to be obvious and within the natural variation expected in a backcrossing breeding process. Without a breeding history in these cases, a complete comparison with the prior art could not have been possible. As seen above in Ex Parte C and Ex Parte McGowan, a trait table is insufficient to differentiate varieties by itself. It has been long established that intracultivar heterogeneity exists in crop species. Haun et al. (Plant Physiology, Feb. 2011, Vol. 155, pp. 645-655 (Y)) teaches that the assumption that elite cultivars are composed of relatively homogenous genetic pools is false. (p. 645, left column). Segregation, recombination, DNA transposition, epigenetic processes, and spontaneous mutations are some of the reasons elite cultivar populations will maintain some degree of plant-to-plant variation (p. 645, right column and p. 646, left column). In addition to genetic variation, environmental variation may lead to phenotypic variation within a cultivar. (Großkinsky et al., J. Exp. Bot., Vol. 66, No. 11, pp. 5429-5440, 2015 (Z), p. 5430, left column, 1st full paragraph, and right column, 2nd full paragraph). In view of this variability, a breeding history is an essential and the least burdensome way to provide genetic information needed to adequately describe a newly developed plant. The above factual evidence provides a reasonable basis that a breeding history is necessary written description. With this information the examiner has met the initial burden of presenting by a preponderance of evidence why a person of ordinary skill in the art would not recognize in an applicant’s disclosure a description of the invention defined by the claims. (See MPEP 2163.04). Please note, the citations above are not for legal authority, the legal authority relied upon by the examiner is the 35 USC 112(a) statute. The citations are presented to support the finding of fact that a breeding history is necessary to the adequate description of a plant. Although not directly relied upon for the above written description position, a complete written description additionally helps drive examination and help with infringement verification. MPEP 2163 (I) states “The written description of the deposited material needs to be as complete as possible because the examination for patentability proceeds solely on the basis of the written description. See, e.g., In re Lundak, 773 F.2d 1216, 227 USPQ 90 (Fed. Cir. 1985); see also 54 Fed. Reg. at 34,880 ("As a general rule, the more information that is provided about a particular deposited biological material, the better the examiner will be able to compare the identity and characteristics of the deposited biological material with the prior art.").” MPEP 2163(I) states “The description must be sufficient to permit verification that the deposited biological material is in fact that disclosed. Once the patent issues, the description must be sufficient to aid in the resolution of questions of infringement." Id. at 34,880.)” (Quoting the Deposit of Biological Materials for Patent Purposes, Final Rule, 54 Fed. Reg. 34,864 (August 22, 1989) at 34,880). The breeding history aids in the resolution of patent infringement by providing information necessary to determine whether differences in the plants are genetic differences, differences caused by the environment, or differences within the accepted variation within a variety. Moreover, a specification devoid of a complete breeding history hampers the public’s ability to resolve infringement analysis with plants already in the prior art as well as plants that have not yet been patented. Because the instant specification lacks the complete breeding history, the public will not be able to fully resolve questions of infringement. Since the breeding history, including the parents, is not known to the public, the public could only rely on the phenotypes of the claimed plants for assessing potential infringement. Thus, an application that does not clearly describe the breeding history does not provide an adequate written description of the invention. This is also confirmed by the fact that nearly all applicants that prosecute applications where a new plant variety will often argue genetic difference based on breeding histories when the seek to distinguish two plants that are phenotypically similar. Because of this as well as the mountain of evidence already submitted it is clear that new plants need a breeding history or other genetic information in addition to traits at the minimum. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), first paragraph: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same and shall set forth the best mode contemplated by the inventor of carrying out his invention. Written Description Claims 1-25 are rejected under 35 U.S.C 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The instant Specification fails to satisfy the written description requirement of 35 U.S. Code § 112(a) because it does not provide a description sufficient to conduct an examination, including search of the prior art, nor does it provide enough description to be sufficient to aid in the resolution of questions of infringement. A. A deposit is not a substitute for description of the claimed invention The claims all require plants and seeds of lettuce seed designated as NUN 06346 LTL, representative sample of seed having been deposited under NCIMB Accession Number 44175. A deposit is not a substitute for description of the claimed invention. See MPEP § 2163: An applicant shows that the inventor was in possession of the claimed invention by describing the claimed invention with all of its limitations using such descriptive means as words, structures, figures, diagrams, and formulas that fully set forth the claimed invention. Lockwood v. Amer. Airlines, Inc., 107 F.3d 1565, 1572, 41 USPQ2d 1961, 1966 (Fed. Cir. 1997). Possession may be shown in a variety of ways including description of an actual reduction to practice, or by showing that the invention was "ready for patenting" such as by the disclosure of drawings or structural chemical formulas that show that the invention was complete, or by describing distinguishing identifying characteristics sufficient to show that the inventor was in possession of the claimed invention. See, e.g., Pfaff v. Wells Elecs., Inc., 525 U.S. 55, 68, 119 S.Ct. 304, 312, 48 USPQ2d 1641, 1647 (1998); Eli Lilly, 119 F.3d at 1568, 43 USPQ2d at 1406; Amgen, Inc. v. Chugai Pharm., 927 F.2d 1200, 1206, 18 USPQ2d 1016, 1021 (Fed. Cir. 1991) (one must define a compound by "whatever characteristics sufficiently distinguish it"). "Compliance with the written description requirement is essentially a fact-based inquiry that will ‘necessarily vary depending on the nature of the invention claimed.’" Enzo Biochem, 323 F.3d at 963, 63 USPQ2d at 1612. An application specification may show actual reduction to practice by describing testing of the claimed invention or, in the case of certain biological materials, by specifically describing a deposit made in accordance with 37 CFR 1.801 et seq. See Enzo Biochem, 323 F.3d at 965, 63 USPQ2d at 1614 ("reference in the specification to a deposit may also satisfy the written description requirement with respect to a claimed material"); see also Deposit of Biological Materials for Patent Purposes, Final Rule, 54 Fed. Reg. 34,864 (August 22, 1989) ("The requirement for a specific identification is consistent with the description requirement of the first paragraph of 35 U.S.C. 112, and to provide an antecedent basis for the biological material which either has been or will be deposited before the patent is granted." Id. at 34,876. "The description must be sufficient to permit verification that the deposited biological material is in fact that disclosed. Once the patent issues, the description must be sufficient to aid in the resolution of questions of infringement." Id. at 34,880.) Such a deposit is not a substitute for a written description of the claimed invention. The written description of the deposited material needs to be as complete as possible because the examination for patentability proceeds solely on the basis of the written description. See, e.g., In re Lundak, 773 F.2d 1216, 227 USPQ 90 (Fed. Cir. 1985); see also 54 Fed. Reg. at 34,880 ("As a general rule, the more information that is provided about a particular deposited biological material, the better the examiner will be able to compare the identity and characteristics of the deposited biological material with the prior art."). (emphasis added) Hence, Applicant has not, in fact, described NUN 06346 LTL by virtue of the deposit alone, and the specification fails to provide an adequate written description of the claimed invention. B. The breeding history of the lettuce variety NUN 06346 LTL is not described MPEP § 2163 (I) states “The written description of the deposited material needs to be as complete as possible because the examination for patentability proceeds solely on the basis of the written description. See, e.g., In re Lundak, 773 F.2d 1216, 227 USPQ 90 (Fed. Cir. 1985); see also 54 Fed. Reg. at 34,880 ("As a general rule, the more information that is provided about a particular deposited biological material, the better the examiner will be able to compare the identity and characteristics of the deposited biological material with the prior art.").” MPEP § 2163(I) states “The description must be sufficient to permit verification that the deposited biological material is in fact that disclosed. Once the patent issues, the description must be sufficient to aid in the resolution of questions of infringement." Id. at 34,880.)” (Quoting the Deposit of Biological Materials for Patent Purposes, Final Rule, 54 Fed. Reg. 34,864 (August 22, 1989) at 34,880). The claims are drawn to a plant or seed of lettuce variety NUN 06346 LTL and its parts, methods of making the plant, and methods of using it. The Specification is silent on the breeding history of the lettuce variety NUN 06346 LTL. In the instant application, a full examination cannot be conducted because applicant failed to provide the breeding history for the instantly claimed plant variety. Specifically, in claims 1-25, applicant claims a new lettuce variety NUN 06346 LTL. A plant variety is defined by both its genetics (breeding history) and its traits. In the instant application, applicant has only provided a description of the plant traits as seen in the specification. The instant application is silent or incomplete as to the breeding history used to produce the claimed plant variety. The criticality of a breeding history in assessing the intellectual property rights of a plant is well recognized in the field of plant breeding. With regard to Plant Patents, MPEP § 1605 states that a complete detailed description of a plant includes “the origin or parentage”. Other bodies that grant intellectual property protection for plant varieties require breeding information to evaluate whether protection should be granted to new varieties. A breeding history, including information about parentage and breeding methodology, is part of the requirements of Plant Variety Protection (PVP) applications. That information is used to “determine if development is sufficient to consider the variety new” (see “Applying for a Plant Variety Certificate of Protection” by the USDA reference to Exhibit A; accessed May 1, 2023). Additionally, the International Union for the Protection of New Varieties of Plants (UPOV) considers breeding history and methodology part of its evaluation of essentially derived plant varieties (see UPOV EDV Explanatory Notes 14 and 30; April 6, 2017). While the USPTO, USDA, and UPOV have different laws governing intellectual property rights, all recognize that a breeding history is an essential part of adequate description of the plant sought to be protected. The breeding history is also necessary to aid in the resolution of patent infringement by providing information necessary to determine whether differences in plants where genetic differences, differences caused by the environment, or differences within the accepted variation within a variety. Historically, the USPTO has considered breeding history information when determining the patentability of a new plant variety (Ex Parte C (USPQ 2d 1492 (1992); and Ex Parte McGowen- Board Decision in Application 14/996,093). In both of these cases, there were many differences cited by the applicant when comparing the prior art and the new plant variety. However, because the breeding history was available, these differences were deemed to be obvious and within the natural variation expected in a backcrossing breeding process. Without a breeding history in these cases, a complete comparison with the prior art could not have been possible. Moreover, a specification devoid of a breeding history hampers the public’s ability to resolve infringement analysis with plants already in the prior art as well as plants that have not yet been patented. Because the instant specification lacks the breeding history, the public will not be able to fully resolve questions of infringement. Since the breeding history, including the parents, is not known to the public, the public could only rely on the phenotypes of the claimed plants for assessing potential infringement. As seen above in Ex Parte C and Ex Parte McGowan, a trait table is insufficient to differentiate varieties by itself. It has been long established that intracultivar heterogeneity exists in crop species. For example, Haun et al. teaches that the assumption that elite plant cultivars are composed of relatively homogenous genetic pools is false (Haun et al., 2011, The Composition and Origins of Genomic Variation among Individuals of the Soybean Reference Cultivar Williams 82, Plant Physiology 155: 645-655; at page 645, left column). Segregation, recombination, DNA transposition, epigenetic processes, and spontaneous mutations are some of the reasons elite cultivar populations will maintain some degree of plant-to-plant variations (Haun et al., page 645 right column, and page 646 left column). In addition to genetic variation, environmental variation may lead to phenotypic variation within a cultivar (Großkinsky et al., 2015, Plant phenomics and the need for physiological phenotyping across scales to narrow the genotype-to-phenotype knowledge gap, Journal of Experimental Botany 66(18): 5429-5440; at page 5430 left column 1st full paragraph and right column 2nd full paragraph). In view of this variability, a breeding history is an essential and the least burdensome way to provide genetic information needed at adequate describe a newly developed plant. Thus, an application that does not clearly describe the breeding history does not provide an adequate written description of the invention. To overcome this rejection, applicant must amend the specification/drawing to provide the breeding history used to develop the instant variety or cultivar. When identifying the breeding history, applicant should identify any and all other potential names for all parental lines utilized in the development of the instant variety. For example, if applicant’s breeding history uses proprietary line names, applicant should notate in the specification all other names of the proprietary lines, especially publicly disclosed or patented line information. If the breeding history encompasses a locus conversion or a backcrossing process, applicant should clearly indicate the recurrent parent and the donor plant and specifically name the trait or transgenic event that is being donated to the recurrent parent. If one of the parents is a backcross progeny or locus converted line of a publicly disclosed line, applicant should provide the breeding history of the parent line as well (i.e., grandparents). Applicant is also reminded that they have a duty to disclose information material to patentability. Applicant should also notate the most similar plants which should include any other plants created using similar breeding history (such as siblings of the instant variety). This information can be submitted in an IDS with a notation of the relevancy to the instant application or as information submitted as described in MPEP 724 (e.g., trade secret, proprietary, and Protective Order). Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AMJAD A ABRAHAM whose telephone number is (571)270-7058. The examiner can normally be reached Mon-Friday 830 AM to 500 PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Amjad A Abraham can be reached at 571-270-7058. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. AMJAD A. ABRAHAM SPE AU 1663 Art Unit 1663 /Amjad Abraham/SPE, Art Unit 1663
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Prosecution Timeline

Dec 21, 2023
Application Filed
Aug 08, 2025
Non-Final Rejection — §112
Nov 12, 2025
Response Filed
Mar 11, 2026
Final Rejection — §112 (current)

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Prosecution Projections

3-4
Expected OA Rounds
30%
Grant Probability
67%
With Interview (+36.9%)
3y 9m
Median Time to Grant
Moderate
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