Prosecution Insights
Last updated: July 17, 2026
Application No. 18/465,335

SYSTEMS AND METHODS FOR PROTEIN EXPRESSION

Non-Final OA §102§112
Filed
Sep 12, 2023
Priority
Mar 12, 2021 — provisional 63/160,672 +1 more
Examiner
ZARA, JANE J
Art Unit
1637
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Excepgen Inc.
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
776 granted / 1096 resolved
+10.8% vs TC avg
Strong +16% interview lift
Without
With
+16.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
47 currently pending
Career history
1139
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
43.4%
+3.4% vs TC avg
§102
12.0%
-28.0% vs TC avg
§112
19.4%
-20.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1096 resolved cases

Office Action

§102 §112
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This Office action is in response to the communication filed 5-8-26. Claims 1, 3-6, 12-17, 33-35, 38, 39, 48-51, 62, 63, 99, 100, and 104 are pending in the instant application. Election/Restrictions Claims 6, 12, 13-15, 17, 33, 34, 39, 99, 100 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention or species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 5-8-26. Applicant’s election without traverse of Group I, an antigen as the target protein, a picornavirus leader (L) protein as the enhancer protein comprising SEO ID NO: 2 as the second polynucleotide encoding the enhancer protein, claims 1, 3, 4, 5, 15, 16, 35, 38, 48-51, 62, 63, 66 and 104, SEQ ID No. 2, in the reply filed on 5-8-26 is acknowledged. Claim Rejections - 35 USC § 112 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 1, 3, 4, 5, 15, 16, 35, 38, 48-51, 62, 63, 66 and 104 are rejected under 35 U.S.C. 112, first paragraph, because the specification, while being enabling for the expression in mice of the pGBA-NanoLuc_STD plasmid and the enhancer protein GBA-NanoLuc_EG plasmid formulated into lipid nanoparticles (LNPs), and enabling for the expression of adalimumab in mice serum following intramuscular and subcutaneous administration of AAV_Adalimumab_STD or AAV_Adalimumab_EG, does not reasonably enable methods for predictably increasing the activity of the target protein in the subject, or predictably lowering the expression level of the target protein in the subject, or predictably increasing the uniformity of expression of the target protein at the injection site of the subject, or predictably increasing the duration of active target protein in a cell of the subject, or predictably increasing the expression level of the target protein in the subject comprising the administration of a first polynucleotide encoding any target protein and a second polynucleotide encoding any enhancer protein that is an inhibitor of nucleocytoplasmic transport (NCT). The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention commensurate in scope with these claims. The following factors have been considered in determining that the specification does not enable the skilled artisan to make and/or use the invention over the broad scope claimed. The breadth of the claims: The claims are drawn to methods of expressing any target protein in a subject comprising administering to the subject a system comprising: a) a first polynucleotide encoding the target protein; and b) a second polynucleotide encoding an enhancer protein comprising an inhibitor of nucleocytoplasmic transport (NCT), which NCT inhibitor is optionally a viral protein optionally comprising a picornavirus leader (L) protein which optionally is the L protein of Encephalomyocarditis virus (EMCV) or a functional variant thereof, which L protein shares at least 90% identity to SEQ ID NO: 2, which target protein is optionally an antigen, which enhancer protein increases the activity of the target protein in the subject, or lowers the expression level of the target protein in the subject, or increases the uniformity of expression of the target protein at the injection site of the subject, or which enhancer protein increases the duration of active target protein in a cell of the subject, or increases the expression level of the target protein in the subject. Teachings in the specification: The specification teaches the optimization of AAV vectors encoding Adalimumab in the presence and absence of enhancer protein L, and their ability to enhance or prolong expression of reporter genes. The construction, optimization and expression of various vectors were tested in HEK293T cells in vitro. The specification also teaches the following in vivo results: FIGS. 26A and 26B show the concentration of adalimumab in mouse sera after treating mice with recombinant AAV vectors encoding adalimumab alone, AAV_Adalimumab_STD, and with the enhancer protein L,AAV_Adalimumab_EG. FIG. 26A shows the results of AAV vectors AAV_Adalimumab_STD or AAV_Adalimumab_EG administered via intramuscular injections. FIG. 26B shows the results of AAV vectors administered via subcutaneous injections. FIGS. 32A-32C show bioluminescence imaging results of Balb/c mice treated with pGBA-NanoLuc_STD plasmid and the enhancer protein GBA-NanoLuc_EG plasmid, formulated into lipid nanoparticles (LNPs). The examples provided in the instant specification, of the expression in mice of the pGBA-NanoLuc_STD plasmid and the enhancer protein GBA-NanoLuc_EG plasmid formulated into lipid nanoparticles (LNPs), and the expression of adalimumab in mice serum following intramuscular and subcutaneous administration of AAV_Adalimumab_STD or AAV_Adalimumab_EG, are not representative or correlative of the ability to express any target protein in a subject comprising administering to the subject a system comprising: a first polynucleotide encoding the target protein; and a second polynucleotide encoding any enhancer protein comprising an inhibitor of nucleocytoplasmic transport (NCT), which NCT inhibitor is optionally a viral protein optionally comprising a picornavirus leader (L) protein which optionally is the L protein of Encephalomyocarditis virus (EMCV) or a functional variant thereof, which target protein is optionally any antigen, which enhancer protein increases the expression level and/or activity of the target protein in the subject, or lowers the expression level of the target protein in the subject, or increases the uniformity of expression of the target protein at the injection site of the subject, or which enhancer protein increases the duration of active target protein in a cell of the subject, as instantly claimed. In light of the teachings in the specification, one skilled in the art would not accept on its face the examples provided in the instant disclosure as being correlative or representative of the ability to increase the expression level and/or activity of a target gene, increase uniformity of expression of the target protein or increase the duration of the active target protein in any subject. Since the specification fails to provide the requisite guidance for these expression changes in a subject, and since determination of the factors required for accomplishing these phenotypes in any subject is highly unpredictable, it would require undue experimentation to practice the invention over the broad scope claimed. For these reasons, the instant rejection for lacking enablement over the full scope claimed is proper. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 3-5, 16, 35 is/are rejected under 35 U.S.C. 102(a)(1) and 102(a)(2) as being anticipated by Porter et al (US 2007/0243169). Porter et al (US 2007/0243169) teach methods of expressing a target protein in a subject comprising administering to the subject a polynucleotide encoding the target protein and a polynucleotide encoding an enhancer protein comprising SEQ ID No. 2. Porter teaches that the addition of EMCV L protein (of SEQ ID No. 2) disrupts nucleocytoplasmic trafficking and rapidly inhibits accumulation of cargo in HELA nuclei in a Ran dependent manner. Porter teaches the arrest of cargo at the nuclear periphery of NPCs in L treated samples and the restoration of import activity upon addition of wildtype Ran (see esp. pages 1-5, ¶ 0054, Example 2 on page 9, ¶¶ 0068, 0084, claims 13-17; see also the alignment set forth below between SEQ ID No. 1 of Porter and instantly claimed SEQ ID No. 2). Align w/ SEQ ID No. 2 RESULT 1 US-11-654-848-1 (NOTE: this sequence has 12 duplicates in the database searched. See complete list at the end of this report) Sequence 1, US/11654848 Publication No. US20070243169A1 GENERAL INFORMATION APPLICANT: PORTER, FREDERICK WILLIAM TITLE OF INVENTION: PROTEIN INHIBITOR OF RAN ACTIVITY AND METHODS OF USE THEREOF FILE REFERENCE: 960296.00358 CURRENT APPLICATION NUMBER: US/11/654,848 CURRENT FILING DATE: 2007-05-25 PRIOR APPLICATION NUMBER: 11/654,848 PRIOR FILING DATE: 2007-01-18 NUMBER OF SEQ ID NOS: 17 SEQ ID NO 1 LENGTH: 67 TYPE: PRT ORGANISM: Encephalomyocarditis virus Query Match 100.0%; Score 367; Length 67; Best Local Similarity 100.0%; Matches 67; Conservative 0; Mismatches 0; Indels 0; Gaps 0; Qy 1 MATTMEQETCAHSLTFEECPKCSALQYRNGFYLLKYDEEWYPEELLTDGEDDVFDPELDM 60 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Db 1 MATTMEQETCAHSLTFEECPKCSALQYRNGFYLLKYDEEWYPEELLTDGEDDVFDPELDM 60 Qy 61 EVVFELQ 67 ||||||| Db 61 EVVFELQ 67 RESULT 1 AOD41393 (NOTE: this sequence has 13 duplicates in the database searched. See complete list at the end of this report) ID AOD41393 standard; protein; 67 AA. XX AC AOD41393; XX DT 24-JAN-2008 (first entry) XX DE Encephalomyocarditis virus (EMCV) leader protein, SEQ ID 1. XX KW protein deactivation; signal peptide; protein purification; KW recombinant protein. XX OS Encephalomyocarditis virus. XX FH Key Location/Qualifiers FT Region 10..23 FT /label= Zinc_finger_motif FT Domain 37..61 FT /label= Acidic_domain XX CC PN US2007243169-A1. XX CC PD 18-OCT-2007. XX CC PF 18-JAN-2007; 2007US-00654848. XX PR 18-JAN-2006; 2006US-0743139P. PR 20-JAN-2006; 2006US-0760248P. XX CC PA (PORT/) PORTER F W. CC PA (PALM/) PALMENBERG A C. CC PA (WIES/) WIESE C. CC PA (BOCH/) BOCHKOV Y A. XX CC PI Porter FW, Palmenberg AC, Wiese C, Bochkov YA; XX DR WPI; 2007-892274/82. XX CC PT Inhibiting Ran protein activity in a eukaryotic cell or cell-free extract CC PT by exposing a portion of purified encephalomyocarditis virus or Theiler's CC PT murine encephalomyelitis virus leader protein to a cell to inhibit Ran CC PT activity. XX CC PS Claim 3; SEQ ID NO 1; 32pp; English. XX CC The present invention relates to a novel method of inhibiting Ran protein CC activity in at least one eukaryotic cell or cell-free extract. The method CC comprises: (a) exposing an amino acid sequence comprising at least a CC portion of purified encephalomyocarditis virus (EMCV) or Theiler's murine CC encephalomyelitis virus (TMEV) leader protein to at least one cell in an CC amount to inhibit Ran activity in the cell; and (b) evaluating Ran CC protein activity in the cell or cell-free extract. Evaluating Ran protein CC activity in a cell or cell-free extract comprises measuring the change in CC localization of cellular transport-specific proteins or RNA and the CC ability of a cell-free extract to undergo Ran-dependent tubulin CC condensation into visible cellular spindle assemblies. Ran functions as a CC gatekeeper for nuclear pores, regulating the interactions between nuclear CC transporter molecules and transport of proteins or nucleic acids into CC and/or out of a cell's nucleus. Ran hydrolyzes the GTP to guanosine CC diphosphate (GDP) and the resulting gradient of Ran-GTP and Ran-GDP CC across the nuclear envelope drives nuclear transport. By inhibiting Ran- CC GTP hydrolysis or inhibiting Ran exchange of GTP for GDP, nuclear CC transport may be stopped or manipulated for therapeutic effect. EMCV CC leader protein binds to the Ran protein, thus inhibiting Ran activity in CC eukaryotic cells. Also described is, a composition comprising an amino CC acid segment and a pharmaceutical carrier, where the amino acid segment CC contains at least a portion of EMCV or TMCV L protein. The present CC sequence is EMCV leader protein. XX SQ Sequence 67 AA; Query Match 100.0%; Score 367; Length 67; Best Local Similarity 100.0%; Matches 67; Conservative 0; Mismatches 0; Indels 0; Gaps 0; Qy 1 MATTMEQETCAHSLTFEECPKCSALQYRNGFYLLKYDEEWYPEELLTDGEDDVFDPELDM 60 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Db 1 MATTMEQETCAHSLTFEECPKCSALQYRNGFYLLKYDEEWYPEELLTDGEDDVFDPELDM 60 Qy 61 EVVFELQ 67 ||||||| Db 61 EVVFELQ 67 Conclusion Certain papers related to this application may be submitted to Art Unit 1637 by facsimile transmission. The faxing of such papers must conform with the notices published in the Official Gazette, 1156 OG 61 (November 16, 1993) and 1157 OG 94 (December 28, 1993) (see 37 C.F.R. ' 1.6(d)). The official fax telephone number for the Group is 571-273-8300. NOTE: If Applicant does submit a paper by fax, the original signed copy should be retained by applicant or applicant's representative. NO DUPLICATE COPIES SHOULD BE SUBMITTED so as to avoid the processing of duplicate papers in the Office. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Jane Zara whose telephone number is (571) 272-0765. The examiner’s office hours are generally Monday-Friday, 10:30am - 7pm. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Jennifer Dunston, can be reached on (571)-272-2916. Any inquiry of a general nature or relating to the status of this application should be directed to the Group receptionist whose telephone number is (703) 308-0196. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Jane Zara 6-10-26 /JANE J ZARA/Primary Examiner, Art Unit 1637
Read full office action

Prosecution Timeline

Sep 12, 2023
Application Filed
Apr 06, 2026
Examiner Interview Summary
Apr 06, 2026
Applicant Interview (Telephonic)
Jun 15, 2026
Non-Final Rejection mailed — §102, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
71%
Grant Probability
87%
With Interview (+16.1%)
2y 10m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1096 resolved cases by this examiner. Grant probability derived from career allowance rate.

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