Prosecution Insights
Last updated: April 19, 2026
Application No. 18/052,735

CODON OPTIMIZED REP1 GENES AND USES THEREOF

Non-Final OA §DP
Filed
Nov 04, 2022
Examiner
ARON, KIMBERLY A
Art Unit
1633
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
4D Molecular Therapeutics Inc.
OA Round
1 (Non-Final)
54%
Grant Probability
Moderate
1-2
OA Rounds
3y 7m
To Grant
89%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
230 granted / 424 resolved
-5.8% vs TC avg
Strong +35% interview lift
Without
With
+34.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
21 currently pending
Career history
445
Total Applications
across all art units

Statute-Specific Performance

§101
3.4%
-36.6% vs TC avg
§103
38.6%
-1.4% vs TC avg
§102
14.9%
-25.1% vs TC avg
§112
25.0%
-15.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 424 resolved cases

Office Action

§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 . Claims 1-20, of record 11/04/22 are pending and subject to prosecution. PRIORITY The instant application, filed 11/04/2022, is a CONTINUATION of US Patent No. 11,524,081, filed 05/09/2022, which is a CONTINUATION of US Patent No. 11,357,870, filed 08/31/2021, which claims priority to US Provisional Application No. 63/073,837, filed 09/02/2020. Thus, the earliest possible priority for the instant application is 09/02/2020. CLAIMS Independent claim 1 is directed to a nucleic acid set forth as SEQ ID NO:1 encoding a codon optimized human Rab escort protein: “A nucleic acid encoding human Rab escort protein-1 (REP1) protein of SEQ ID NO:2 and codon optimized for expression in humans, the nucleic acid comprising the nucleotide sequence set forth as SEQ ID NO:1 or comprising a nucleotide sequence at least 80% identical thereto.” Claims 2-20 ultimately depend from claim 1. Drawings The drawings filed 11/04/2022 are objected to because they are not in compliance with 37 CFR 1.84 and 1.121(d). The text of FIG 7 is blurry/faded/and or illegible. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Objections Claims 13 and 14 are objected to because of the following informalities: Claim 13 is missing the article “a” in front of pharmaceutical composition in line 2. Claim 14 has an extraneous underlined period “.” At the end of the claim. The underlining should be removed. Appropriate correction is required. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of parent U.S. Patent No. 11,524,081. Although the claims at issue are not identical, they are not patentably distinct from each other because the claims are obvious variants of the patented claims. Instant claim 1 is drawn to a nucleic acid encoding human Rab escort protein-1 (REP1) protein of SEQ ID NO:2 and codon optimized for expression in humans, the nucleic acid comprising the nucleotide sequence set forth as SEQ ID NO:1 or comprising a nucleotide sequence at least 80% identical thereto. Claim 1 of parent U.S. Patent No. 11,524,081 is drawn to, a nucleic acid encoding human Rab escort protein-1 (REP1) protein of SEQ ID NO:2 and codon optimized for expression in humans, the nucleic acid comprising the nucleotide sequence set forth as SEQ ID NO:1 or comprising a nucleotide sequence at least 90% identical thereto. Thus, the instant claim1 is anticipated by parent patent claim 1. Instant claims 2-20 are similar in scope to patented claims 2-20 of the cited patent claims. Claims 1-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-25 of grandparent U.S. Patent No. 11,524,081. Although the claims at issue are not identical, they are not patentably distinct from each other because the claims are obvious variants of the patented claims. Instant claim 1 is drawn to a nucleic acid encoding human Rab escort protein-1 (REP1) protein of SEQ ID NO:2 and codon optimized for expression in humans, the nucleic acid comprising the nucleotide sequence set forth as SEQ ID NO:1 or comprising a nucleotide sequence at least 80% identical thereto. Claim 1 of US Patent No. 11,357,870 is drawn to, a nucleic acid encoding human Rab escort protein-1 (REP1) protein of SEQ ID NO:2 and codon optimized for expression in humans, the nucleic acid comprising the nucleotide sequence set forth as SEQ ID NO:1 or comprising a nucleotide sequence at least 95% identical thereto, wherein the nucleic acid is expressed at a greater level compared with the level of expression of the wild type REP1 nucleotide sequence of SEQ ID NO: 3 in an otherwise identical cell.” Because the structure of the instant claim is anticipated by claim 1 of the cited patent, the instant claims are an obvious variant of the patented claims. Instant claims 2-20 are similar in scope to patented claims 2-25 of the cited patent claims. Conclusion No claims are allowed. SEQ ID NO: 1 is free of the art, and sequences of at least 80% identity to are free of the art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIMBERLY A ARON whose telephone number is (571)272-2789. The examiner can normally be reached Monday-Friday 9AM-5PM. 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, Christopher Babic can be reached at 571-272-8507. 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. KAA /CHRISTOPHER M BABIC/Supervisory Patent Examiner, Art Unit 1633
Read full office action

Prosecution Timeline

Nov 04, 2022
Application Filed
Nov 01, 2025
Non-Final Rejection — §DP (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
54%
Grant Probability
89%
With Interview (+34.9%)
3y 7m
Median Time to Grant
Low
PTA Risk
Based on 424 resolved cases by this examiner. Grant probability derived from career allow rate.

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