Prosecution Insights
Last updated: April 19, 2026
Application No. 18/021,641

METHODS AND MATERIALS FOR IDENTIFYING AND TREATING MEMBRANOUS NEPHROPATHY

Non-Final OA §112§DP
Filed
Feb 16, 2023
Examiner
MCCOLLUM, ANDREA K
Art Unit
1674
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Mayo Foundation for Medical Education and Research
OA Round
1 (Non-Final)
61%
Grant Probability
Moderate
1-2
OA Rounds
3y 3m
To Grant
93%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
363 granted / 599 resolved
+0.6% vs TC avg
Strong +33% interview lift
Without
With
+32.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
42 currently pending
Career history
641
Total Applications
across all art units

Statute-Specific Performance

§101
6.4%
-33.6% vs TC avg
§103
17.5%
-22.5% vs TC avg
§102
18.1%
-21.9% vs TC avg
§112
36.9%
-3.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 599 resolved cases

Office Action

§112 §DP
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 . Election/Restrictions Applicant’s election without traverse of (I) kidney tissue comprising an elevated level of a polypeptide, and (II) rituximab in the reply filed on 12/10/25 is acknowledged. Upon further consideration, the restriction requirement is withdrawn. Because all claims previously withdrawn from consideration under 37 CFR 1.142 have been rejoined, the restriction requirement as set forth in the Office action mailed on 10/16/25 is hereby withdrawn. In view of the withdrawal of the restriction requirement as to the rejoined inventions, applicant(s) are advised that if any claim presented in a divisional application is anticipated by, or includes all the limitations of, a claim that is allowable in the present application, such claim may be subject to provisional statutory and/or nonstatutory double patenting rejections over the claims of the instant application. Once the restriction requirement is withdrawn, the provisions of 35 U.S.C. 121 are no longer applicable. See In re Ziegler, 443 F.2d 1211, 1215, 170 USPQ 129, 131-32 (CCPA 1971). See also MPEP § 804.01. Claim Status Claims 1-14, 20, 22, 24, 33, 35, and 37 is cancelled. Claims 15-19, 21, 23, 25-32, 34, 36, and 38-40 are pending. Claims 15-19, 21, 23, 25-32, 34, 36, and 38-40 are currently under consideration for patentability under 37 CFR 1.104. Information Disclosure Statement The information disclosure statements filed on 1/24/24 and 10/10/24 have been considered. Signed copies are enclosed. Notably, the disclosure statement filed lists a Search Report. The listing of the references cited in a Search Report itself is not considered to be an information disclosure statement (IDS) complying with 37 CFR 1.98. 37 CFR 1.98(a)(2) requires a legible copy of: (1) each foreign patent; (2) each publication or that portion which caused it to be listed; (3) for each cited pending U.S. application, the application specification including claims, and any drawing of the application, or that portion of the application which caused it to be listed including any claims directed to that portion, unless the cited pending U.S. application is stored in the Image File Wrapper (IFW) system; and (4) all other information, or that portion which caused it to be listed. In addition, each IDS must include a list of all patents, publications, applications, or other information submitted for consideration by the Office (see 37 CFR 1.98(a)(1) and (b)), and MPEP § 609.04(a), subsection I. states, "the list ... must be submitted on a separate paper." Therefore, the references cited in the Search Report have not been considered. Applicant is advised that the date of submission of any item of information or any missing element(s) will be the date of submission for purposes of determining compliance with the requirements based on the time of filing the IDS, including all "statement" requirements of 37 CFR 1.97(e). See MPEP § 609.05(a). Note: If copies of the individual references cited on the Search Report are also cited separately on the IDS (and these references have not been lined-through) they have been considered. Claim Rejections - 35 USC § 112(a) The following is a quotation of the first paragraph 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 the first paragraph of pre-AIA 35 U.S.C. 112: 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. Claims 15-19, 21, 23, 25-32, 34, 36, and 38-40 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 claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. The MPEP states that the purpose of the written description requirement is to ensure that the inventor had possession, as of the filing date of the application, of the specific subject matter later claimed. The MPEP lists factors that can be used to determine if sufficient evidence of possession has been furnished in the disclosure of the application. These include “level of skill and knowledge in the art, partial structure, physical and/or chemical properties, functional characteristics alone or coupled with a known or disclosed correlation between structure and function, and the method of making the claimed invention.” The written description requirement for a claimed genus may be satisfied through sufficient description of a representative number of species by actual reduction to practice, disclosure of drawings, or by disclosure of relevant identifying characteristics, for example, structure or other physical and/or chemical properties, by functional characteristics coupled with a known or disclosed correlation between function and structure, or by a combination of such identifying characteristics, sufficient to show the Applicants were in possession of the claimed genus. The instant claims are directed to a method for treating a mammal having membranous nephropathy comprising identifying a mammal as having autoantibodies for a specific polypeptide or kidney tissue comprising an elevated level of said polypeptide, wherein the polypeptide is a PCDH7 polypeptide, and administering an immunosuppressant to said mammal. There are two separate issues regarding written description of the claimed invention. First, the PCDH7 polypeptide is not adequately described. The instant specification states that “A PCDH7 polypeptide can include any appropriate amino acid sequence. An exemplary amino acid of a human PCDH7 polypeptide can include, without limitation, the amino acid sequence set forth in SEQ ID NO:1 (see, e.g., Figure 2C). In some cases, the amino acid sequence of a PCDH7 polypeptide can have a sequence that deviates from the nucleotide sequence set forth in SEQ ID NO: 1, sometimes referred to as a variant sequence. For example, a PCDH7 polypeptide can have an amino acid sequence that includes one or more modifications (e.g., deletions, insertions, and substitutions) to the amino acid sequence set forth in SEQ ID NO: 1. For example, an amino acid sequence of a PCDH7 polypeptide can have at least 80% sequence identity (e.g., about 82% sequence identity, about 85% sequence identity, about 88% sequence identity, about 90% sequence identity, about 93%sequence identity, about 95% sequence identity, about 97% sequence identity, about 98% sequence identity, or about 99% sequence identity) to the amino acid sequence set forth in SEQ ID NO:1.” SEQ ID NO:1 has 1069 amino acids, which means that as many as 20% or 213 amino acids can be varied, at any point in the sequence. It is also possible that even more amino acids could be varied based on the “any appropriate amino acid sequence” language. The specification does not set forth criteria for identifying “appropriate” amino acid sequences. Therefore any amino acid sequence could potentially be encompassed. Further, the specification does not identify at which residues the sequence can vary, and which domains are necessary for measurement to accurately determine which subjects should receive treatment. The structure of the “appropriate amino acid sequences” are not provided that would correlate with the required function of allow production of autoantibodies or determining when a subject should be treated with an immunosuppressant. Further, only one species, SEQ ID NO:1, is presented, which is not representative of the thousands of possible proteins that are encompassed by the claims. Second, the immunosuppressant genus is not adequately described. The specification does not specifically set forth the definition of an immunosuppressant, except to provide an example function of inhibiting B-cell antibody production or reduce the number of B-cells within a mammal having membranous nephropathy without producing “significant toxicity” to the mammal. There are no criteria set forth for identifying the encompassed agents, and a structure has not been provided to correlate with the functions. However, the genus is entirely defined by function. The genus can encompassed any type of molecule, including proteins, antibodies, peptides, small molecules, nucleic acids, and any other type of molecule. The claims identify sub-genera of agents, such as calcineurin inhibitor, mTOR inhibitor, and DNA damage inducer, but these sub-genera are also identified entirely by their function. The specification identifies a limited number of immunosuppressants, but these species are not sufficiently representative of a genus that potentially encompasses thousands of chemically diverse immunosuppressant agents. The specification provides no guidance regarding which combinations of protein variants and immunosuppressant agents are capable of the required function of identifying and treating subjects with membranous nephropathy. Therefore, the specification provides insufficient written description to support the genus encompassed by the claim. Vas-Cath Inc. v. Mahurkar, 19 USPQ2d 1111, makes clear that "applicant must convey with reasonable clarity to those skilled in the art that, as of the filing date sought, he or she was in possession of the invention. The invention is, for purposes of the 'written description' inquiry, whatever is now claimed." (See page 1117.) The specification does not "clearly allow persons of ordinary skill in the art to recognize that [he or she] invented what is claimed." (See Vas-Cath at page 1116.) With the exception of SEQ ID NO:1 the skilled artisan cannot envision the detailed chemical structure of the encompassed polypeptides, regardless of the complexity or simplicity of the method of isolation. Adequate written description requires more than a mere statement that it is part of the invention and reference to a potential method for isolating it. See Fiers v. Revel, 25 USPQ2d 1601, 1606 (CAFC 1993) and Amgen Inc. V. Chugai Pharmaceutical Co. Ltd., 18 USPQ2d 1016. In Fiddes v. Baird, 30 USPQ2d 1481, 1483, claims directed to mammalian FGF's were found unpatentable due to lack of written description for the broad class. The specification provided only the bovine sequence. University of California v. Eli Lilly and Co., 43 USPQ2d 1398, 1404. 1405 held that: ...To fulfill the written description requirement, a patent specification must describe an invention and does so in sufficient detail that one skilled in the art can clearly conclude that "the inventor invented the claimed invention." Lockwood v. American Airlines Inc. , 107 F.3d 1565, 1572, 41 USPQ2d 1961, 1966 (1997); In re Gosteli , 872 F.2d 1008, 1012, 10 USPQ2d 1614, 1618 (Fed. Cir. 1989) (" [T]he description must clearly allow persons of ordinary skill in the art to recognize that [the inventor] invented what is claimed."). Thus, an applicant complies with the written description requirement "by describing the invention, with all its claimed limitations, not that which makes it obvious," and by using "such descriptive means as words, structures, figures, diagrams, formulas, etc., that set forth the claimed invention." Lockwood, 107 F.3d at 1572, 41 USPQ2datl966. Protein chemistry is one of the most unpredictable areas of biotechnology. This unpredictability prevents prediction of the effects that a given number or location of mutation will have on a protein (such as TNF or a cytokine) As taught by Skolnick et al (Trends Biotechnol. 2000 Jan;18(1):34-9), sequence based methods for predicting protein function are inadequate because of the multifunctional nature of proteins (see e.g. abstract). Further, just knowing the structure of the protein is also insufficient for prediction of functional sites (see e.g. abstract). Sequence to function methods cannot specifically identify complexities for proteins, such as gain and loss of function during evolution, or multiple functions possible within a cells (see e.g. page 34, right column). Skolnick advocates determining the structure of the protein, then identifying the functionally important residues since using the chemical structure to identify functional sites is more in line with how a protein actually works (see e.g. page 34, right column). The sensitivity of proteins to alterations of even a single amino acid in a sequence are exemplified by Burgess et al. (J. Cell Biol. 111:2129-2138, 1990) who teach that replacement of a single lysine reside at position 118 of acidic fibroblast growth factor by glutamic acid led to the substantial loss of heparin binding, receptor binding and biological activity of the protein and by Lazar et al. (Mol. Cell. Biol., 8:1247-1252, 1988) who teach that in transforming growth factor alpha, replacement of aspartic acid at position 47 with alanine or asparagine did not affect biological activity while replacement with serine or glutamic acid sharply reduced the biological activity of the mitogen. These references demonstrate that even a single amino acid substitution will often dramatically affect the biological activity and characteristics of a protein. Further, Miosge (Proc Natl Acad Sci U S A. 2015 Sep 15;112(37):E5189-98) teach that Short of mutational studies of all possible amino acid substitutions for a protein, coupled with comprehensive functional assays, the sheer number and diversity of missense mutations that are possible for proteins means that their functional importance must presently be addressed primarily by computational inference (see e.g. page E5189, left column). However, in a study examining some of these methods, Miosge shows that there is potential for incorrect calling of mutations (see e.g. page E5196, left column, top paragraph). The authors conclude that the discordance between predicted and actual effect of missense mutations creates the potential for many false conclusions in clinical settings where sequencing is performed to detect disease-causing mutations (see e.g. page E5195, right column, last paragraph). The findings in their study show underscore the importance of interpreting variation by direct experimental measurement of the consequences of a candidate mutation, using as sensitive and specific an assay as possible (see e.g. page E5197, left column, top paragraph). Additionally, Bork (Genome Research, 2000,10:398-400) clearly teaches the pitfalls associated with comparative sequence analysis for predicting protein function because of the known error margins for high-throughput computational methods. Bork specifically teaches that computational sequence analysis is far from perfect, despite the fact that sequencing itself is highly automated and accurate (p. 398, column 1). One of the reasons for the inaccuracy is that the quality of data in public sequence databases is still insufficient. This is particularly true for data on protein function. Protein function is context dependent, and both molecular and cellular aspects have to be considered (p. 398, column 2). Conclusions from the comparison analysis are often stretched with regard to protein products (p. 398, column 3). Further, although gene annotation via sequence database searches is already a routine job, even here the error rate is considerable (p. 399, column 2). Most features predicted with an accuracy of greater than 70% are of structural nature and, at best, only indirectly imply a certain functionality (see legend for table 1, page 399). As more sequences are added and as errors accumulate and propagate it becomes more difficult to infer correct function from the many possibilities revealed by database search (p. 399, paragraph bridging columns 2 and 3). The reference finally cautions that although the current methods seem to capture important features and explain general trends, 30% of those features are missing or predicted wrongly. This has to be kept in mind when processing the results further (p. 400, paragraph bridging cols 1 and 2). One key issue is the prediction of protein function based on sequence similarity, which could be one way to identify the functional agents that are useful in the instant claims. Kulmanov et al (Bioinformatics, 34(4), 2018, 660–668), teach that there are key challenges for protein function prediction methods (see e.g. page 661, left column). These challenges arise from the difficulty identifying and accounting for the complex relationship between protein sequence structure and function (see e.g. page 661, left column). Despite significant progress in the past years in protein structure prediction, it still requires large efforts to predict protein structure with sufficient quality to be useful in function prediction (see e.g. page 661, left column). Another challenge is that proteins do not function in isolation. In particular higher level physiological functions that go beyond simple molecular interactions will require other proteins and cannot usually be predicted by considering a single protein in isolation (see e.g. page 661, left column). Due to these challenges it is not obvious what kinds of features should be used to predict the functions of a protein and whether they can be generated efficiently for a large number of proteins, such as the vast genus of proteins and immunosuppressant agents encompassed by the instant claims (see e.g. page 661, left column). Given the teachings of these references that point out the limitations and pitfalls of using sequence to predict functions, and the lack of a representative number of species across the breadth of the genus, one of skill in the art would reasonably conclude that only SEQ ID NO:1, but not the full breadth of the claims, meet the written description provision of 35 USC 112(a). Regarding small molecule inhibitors of a particular protein target, the prediction of binding to a target, much less the inhibitory activity, is highly unpredictable. According to Guido et al (Curr Med Chem. 2008;15(1):37-46), accurately predicting the binding affinity of new drug candidates remains a major challenge in drug discovery (see page 37). There are a vast number of possible compounds that may bind a particular target, many of which have likely not been discovered. Relying on virtual screening also lends unpredictability to the art regarding identification of molecules that would be capable of the required functions of the instant claims. Guido et al teach that there are two main complex issues with predicting activity for a small molecule: accurate structural modeling and/or correct prediction of activity (see page 40). As taught by Clark et al (J. Med. Chem., 2014, 57 (12), pp 5023–5038), even when guided by structural data, developing selective JAK structure-activity relationships has been challenging owing to the similarities of the enzymes (see page 5028). Therefore, it is impossible for one of skill in the art to predict that any particular encompassed small molecule therapeutic would function to treat disease. Regarding nucleic acid based therapeutics, the efficacy of any possible DNA or RNA based therapeutic modality is highly unpredictable. This unpredictability stems from an inability to predict the effects of any particular sequence the expression or function of any target. As taught by Aagaard et al (Advanced Drug Delivery Reviews 59 (2007) 75–86), the development of RNAi based therapeutics faces several challenges, including the need for controllable or moderate promoter systems and therapeutics that are efficient at low doses (see page 79), the ability of an unpredictable number of sequences to stimulate immune responses, such as type I interferon responses (see page 79), competition with cellular RNAi components (see page 83), the side effect of suppressing off targets (see page 80), and challenging delivery (see page 83). The success of antisense strategies, including anti-RNA and anti-DNA strategies are also highly unpredictable. Warzocha et al (Leukemia and Lymphoma (1997) Vol. 24. pp. 267-281) teach that the efficacy of antisense effects varies between different targeted sites of RNA molecules and three dimensional RNA structures (see page 269), while DNA-targeting strategies have numerous problems including a restricted number of DNA sequences that can form triple helices at appropriate positions within genes and the inaccessibility of particular sequences due to histones and other proteins (see page 269). These references demonstrate that variation in RNA or DNA based therapeutics will often dramatically affect the biological activity and characteristics of the intended therapeutic. McKeague et al (J Nucleic Acids. 2012;2012:748913. Epub 2012 Oct 24) teach that aptamers have particular challenges because unlike antibodies or molecular imprinted polymers, their tertiary structure is highly dependent on solution conditions and they are easily degraded in blood. Further, they have less chemical diversity than other antagonist molecules (see page 2), and have issues associated with determining the Kd measurements for a given molecule (see page 13). Given the teachings of Aagaard et al, Warzocha et al, and McKeague et al, the claimed nucleic acid therapeutics could not be predicted based on the targets selected or similarities to the disclosed example therapeutics. Therefore, it is impossible for one of skill in the art to predict that any particular encompassed nucleic acid based therapeutic, such as oligonucleotide aptamers, RNAi molecules and antisense oligonucleotides, would function to decrease expression or function of a target gene or protein, or treat disease. Regarding the encompassed antibody agents, the functional characteristics of antibodies (including binding specificity and affinity) are dictated on their structure. Amino acid sequence and conformation of each of the heavy and light chain CDRs are critical in maintaining the antigen binding specificity and affinity which is characteristic of the parent immunoglobulin. For example, Vajdos et al. (J Mol Biol. 2002 Jul 5;320(2):415-28 at 416) teaches that, “ … Even within the Fv, antigen binding is primarily mediated by the complementarity determining regions (CDRs), six hypervariable loops (three each in the heavy and light chains) which together present a large contiguous surface for potential antigen binding. Aside from the CDRs, the Fv also contains more highly conserved framework segments which connect the CDRs and are mainly involved in supporting the CDR loop conformations, although in some cases, framework residues also contact antigen. As an important step to understanding how a particular antibody functions, it would be very useful to assess the contributions of each CDR side-chain to antigen binding, and in so doing, to produce a functional map of the antigen-binding site." The art shows an unpredictable effect when making single versus multiple changes to any given CDR. For example, Brown et al. (J Immunol. 1996 May;156(9):3285-91 at 3290 and Tables 1 and 2), describes how the VH CDR2 of a particular antibody was generally tolerant of single amino acid changes, however the antibody lost binding upon introduction of two amino changes in the same region. Recently, the U.S. Court of Appeals for the Federal Circuit (Federal Circuit) decided Amgen v. Sanofi, 872 F.3d 1367 (Fed. Cir. 2017), which concerned adequate written description for claims drawn to antibodies. The Federal Circuit explained in Amgen that when an antibody is claimed, 35 U.S.C. § 112(a) requires adequate written description of the antibody itself even when preparation of such an antibody would be routine and conventional. Amgen, 872 F.3d at 1378-79. A key role played by the written description requirement is to prevent “attempt[s] to preempt the future before it has arrived.” Ariad at 1353, (quoting Fiers v. Revel, 984 F.2d at 1171). Upholding a patent drawn to a genus of antibodies that includes members not previously characterized or described could negatively impact the future development of species within the claimed genus of antibodies. In the instant application, neither the art nor the specification provide a sufficient representative number of antibodies or a sufficient structure-function correlation to meet the written description requirements. Regarding the specific biomarker measurement steps of the method, the skilled artisan cannot envision the steps, including the specific measurement thresholds that are required to establish specific status outcomes. In general, the art regarding establishing biomarkers is unpredictable. Waiker et al (J Am Soc Nephrol. 2012 January; 23(1): 13–21) teach that although diagnostic tests are judged based on their ability to classify individuals according to disease status, the actual disease status is often not known with certainty in clinical medicine. Waiker et al describe the specific example of predicting myocardial infarction, which is ultimately a pathologic diagnosis. While testing blood biochemical markers is accepted as a marker of potential myocardial infarction, few diagnostic tests enjoy acceptance as biomarkers (see page 2). This is particularly a problem when the new test is being compared to an imperfect standard test, such as serum creatinine (see page 1). It is also important to note that Waiker et al discuss the necessity of specific thresholds. Waiker et al describe that the measurement of ferritin is used in clinical practice to diagnose iron deficiency, but the test can result in misclassification of disease status, and this may be specifically due to exclusion of certain intermediate values that may have led to an overestimation of the accuracy of other biomarkers. This indicates that the threshold established for any given biomarker to describe any particular disease is critical for establishing the accuracy of the biomarker to predict disease (see page 8). Adequate written description requires more than a mere statement that is part of the invention. See Fiers v. Revel, 25 USPQ2d 1601, 1606 (CAFC 1993) and Amgen Inc. v. Chungai Pharmaceutical Co. Ltd., 18 USPQ2d 1016. In Fiddes v. Baird, 30 USPQ2d 1481, 1483, claims directed to mammalian FGF's were found unpatentable due to lack of written description for the broad class. The specification provided only the bovine sequence. The University of California v. Eli Lilly and Co., 43 USPQ2d 1398, 1404, 1405 held that: …To fulfill the written description requirement, a patent specification must describe an invention and does so in sufficient detail that one skilled in the art can clearly conclude that “the inventor invented the claimed invention.” Lockwood v. American Airlines Inc. 107 F.3d 1565, 1572, 41 USPQ2d 1961, 1966 (1997); In re Gosteli, 872 F.2d 1008, 1012, 10 USPQ2d 1614, 1618 (Fed. Cir. 1989) ("[T]he description must clearly allow persons of ordinary skill in the art to recognize that [the inventor] invented what is claimed."). Thus an Applicant complies with the written description requirement "by describing the invention, with all its claimed limitations, not that which makes it obvious," and by using "such descriptive means as words, structures, figures, diagrams, formulas, etc., that set forth the claimed invention." Lockwood, 107 F.3d at 1572, 41 USPQ2dat1966. MPEP § 2163.02 states, “[a]n objective standard for determining compliance with the written description requirement is, 'does the description clearly allow person of ordinary skill in the art to recognize that he or she invented what is claimed’”. The courts have decided: the purpose of the "written description" requirement is broader than to merely explain how to "make and use"; the Applicant must convey with reasonable clarity to those skilled in the art, that as of the filing date sought, he or she was in possession of the invention. The invention is for purposes of the “written description” inquiry, whatever is now claimed. See Vas-Cath, Inc v. Mahurkar, 935 F.2d 1555, 1563-64, 19 USPQ2d 1111, 1117 (Federal Circuit, 1991). Furthermore, the written description provision of 35 USC §112 is severable from its enablement provision; and adequate written description requires more than a mere statement that it is part of the invention and reference to a potential method for isolating it. Fiers v. Revel, 25 USPQ2d 1601, 1606 (CAFC 1993). And Amgen Inc. v. Chugai Pharmaceutical Co. Ltd., 18 USPQ2d 1016. Moreover, an adequate written description of the claimed invention must include sufficient description of at least a representative number of species by actual reduction to practice, reduction to drawings, or by disclosure of relevant, identifying characteristics sufficient to show that Applicant was in possession of the claimed genus. However, factual evidence of an actual reduction to practice has not been disclosed by Applicant in the specification; nor has Applicant shown the invention was “ready for patenting” by disclosure of drawings or structural chemical formulas that show that the invention was complete; nor has the Applicant described distinguishing identifying characteristics sufficient to show that Applicant were in possession of the claimed invention at the time the application was filed. Therefore for all these reasons the specification lacks adequate written description, and one of skill in the art cannot reasonably conclude that Applicant had possession of the claimed invention at the time the instant application was filed. Claim Rejections - 35 USC § 112(b) The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 15-19, 21, 23, 25-32, 34, 36, and 38-40 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The term “elevated” in claims 15 and 28 is a relative term which renders the claim indefinite. The term “elevated” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. Claims 19 and 32 recite the term “B-cell inhibitor.” The instant specification does not define the criteria that must be met to be considered a “B-cell inhibitor.” The specification indicates that B-cell inhibitors can include B-cell reduction or depletion agents, but the term “inhibitor” suggests targeting of an activity, such as targeting a specific protein or other molecule. The genus of B-cell inhibitors encompassed by the claims is therefore indefinite. Claims depending from the rejected claims do not remedy the deficiency and therefore are also rejected. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDREA MCCOLLUM whose telephone number is (571)272-4002. The examiner can normally be reached 9:00 AM to 6:00 PM EST. 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, VANESSA FORD can be reached at (571)272-0857. 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. /ANDREA K MCCOLLUM/ Examiner, Art Unit 1674
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Prosecution Timeline

Feb 16, 2023
Application Filed
Mar 07, 2026
Non-Final Rejection — §112, §DP (current)

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Prosecution Projections

1-2
Expected OA Rounds
61%
Grant Probability
93%
With Interview (+32.6%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 599 resolved cases by this examiner. Grant probability derived from career allow rate.

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