Prosecution Insights
Last updated: October 02, 2026
Application No. 18/488,859

TREATMENT OF CANAVAN DISEASE

Final Rejection §102§DOUBLEPATENT
Filed
Oct 17, 2023
Priority
Jun 22, 2016 — provisional 62/353,515 +2 more
Examiner
BERTOGLIO, VALARIE E
Art Unit
1632
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
City of Hope
OA Round
4 (Final)
64%
Grant Probability
Moderate
5-6
OA Rounds
3m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
556 granted / 868 resolved
+4.1% vs TC avg
Strong +30% interview lift
Without
With
+30.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
40 currently pending
Career history
897
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
26.6%
-13.4% vs TC avg
§102
15.4%
-24.6% vs TC avg
§112
41.7%
+1.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 868 resolved cases

Office Action

§102 §DOUBLEPATENT
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 reply dated 6/18/2026 has been received. Election/Restrictions Applicant's election without traverse of Group I in the reply filed on 06/02/2025 is acknowledged. Claims 14-20 and 28 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 06/02/2025. Drawings Color photographs and color drawings are not accepted in utility applications unless a petition filed under 37 CFR 1.84(a)(2) is granted. Any such petition must be accompanied by the appropriate fee set forth in 37 CFR 1.17(h), one set of color drawings or color photographs, as appropriate, if submitted via the USPTO patent electronic filing system or three sets of color drawings or color photographs, as appropriate, if not submitted via the via USPTO patent electronic filing system, and, unless already present, an amendment to include the following language as the first paragraph of the brief description of the drawings section of the specification: The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee. Color photographs will be accepted if the conditions for accepting color drawings and black and white photographs have been satisfied. See 37 CFR 1.84(b)(2). Nucleotide and/or Amino Acid Sequence Disclosures REQUIREMENTS FOR PATENT APPLICATIONS CONTAINING NUCLEOTIDE AND/OR AMINO ACID SEQUENCE DISCLOSURES Items 1) and 2) provide general guidance related to requirements for sequence disclosures. 37 CFR 1.821(c) requires that patent applications which contain disclosures of nucleotide and/or amino acid sequences that fall within the definitions of 37 CFR 1.821(a) must contain a "Sequence Listing," as a separate part of the disclosure, which presents the nucleotide and/or amino acid sequences and associated information using the symbols and format in accordance with the requirements of 37 CFR 1.821 - 1.825. This "Sequence Listing" part of the disclosure may be submitted: In accordance with 37 CFR 1.821(c)(1) via the USPTO patent electronic filing system (see Section I.1 of the Legal Framework for Patent Electronic System (https://www.uspto.gov/PatentLegalFramework), hereinafter "Legal Framework") as an ASCII text file, together with an incorporation-by-reference of the material in the ASCII text file in a separate paragraph of the specification as required by 37 CFR 1.823(b)(1) identifying: the name of the ASCII text file; ii) the date of creation; and iii) the size of the ASCII text file in bytes; In accordance with 37 CFR 1.821(c)(1) on read-only optical disc(s) as permitted by 37 CFR 1.52(e)(1)(ii), labeled according to 37 CFR 1.52(e)(5), with an incorporation-by-reference of the material in the ASCII text file according to 37 CFR 1.52(e)(8) and 37 CFR 1.823(b)(1) in a separate paragraph of the specification identifying: the name of the ASCII text file; the date of creation; and the size of the ASCII text file in bytes; In accordance with 37 CFR 1.821(c)(2) via the USPTO patent electronic filing system as a PDF file (not recommended); or In accordance with 37 CFR 1.821(c)(3) on physical sheets of paper (not recommended). When a “Sequence Listing” has been submitted as a PDF file as in 1(c) above (37 CFR 1.821(c)(2)) or on physical sheets of paper as in 1(d) above (37 CFR 1.821(c)(3)), 37 CFR 1.821(e)(1) requires a computer readable form (CRF) of the “Sequence Listing” in accordance with the requirements of 37 CFR 1.824. If the "Sequence Listing" required by 37 CFR 1.821(c) is filed via the USPTO patent electronic filing system as a PDF, then 37 CFR 1.821(e)(1)(ii) or 1.821(e)(2)(ii) requires submission of a statement that the "Sequence Listing" content of the PDF copy and the CRF copy (the ASCII text file copy) are identical. If the "Sequence Listing" required by 37 CFR 1.821(c) is filed on paper or read-only optical disc, then 37 CFR 1.821(e)(1)(ii) or 1.821(e)(2)(ii) requires submission of a statement that the "Sequence Listing" content of the paper or read-only optical disc copy and the CRF are identical. Specific deficiencies and the required response to this Office Action are as follows: Specific deficiency – Nucleotide and/or amino acid sequences appearing in the description are not identified by sequence identifiers in accordance with 37 CFR 1.821(d). Reference must be made to the sequence by use of a sequence identifier See nucleotide sequences in Tables 1 and 2, for example. Required response – Applicant must provide: A substitute specification in compliance with 37 CFR 1.52, 1.121(b)(3) and 1.125 inserting the required sequence identifiers, consisting of: A copy of the previously-submitted specification, with deletions shown with strikethrough or brackets and insertions shown with underlining (marked-up version); A copy of the amended specification without markings (clean version); and A statement that the substitute specification contains no new matter. Claim Rejections - 35 USC § 102 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. Claim(s) 29-30 remain rejected under 35 U.S.C. 102a1 as being anticipated by Surendran (Developmental Brain Research 153 (2004) 19 – 27). Claim 29 continues to read on transplant of a wild-type NPC population into the brain because it is drawn to “a population comprising NPCs” where the NPCs are recited to be obtained by a particular process. The NPCs resulting from this process do not appear to differ from wild-type NPCs. The same is true for claim 30. The wildtype NPCs are the cells that result from genetic correction of the mutated ASPA gene by gene editing. Surendran taught treatment of a mouse model of Canavan disease by transplant of wildtype NPCs into the brain. Applicant argues that claim 29 recites a method that includes obtaining a population of genetically corrected neural progenitor cells (NPCs) in relation to the subject. Thus, the NPCs differ from the subject’s endogenous NPCs. This argument is not persuasive because the genetically corrected NPCs are indistinguishable from wild-type MPCs. The methods used to obtain the NPCs that are transplanted are not recited as active method steps. Applicant argues that product-by-process analysis has been improperly applied to a method claim. This argument is also not persuasive. The active method step requires obtaining a genetically-corrected NPC. The genetically corrected NPC can be indistinguishable from a wild-type NPC (when the mutation is corrected by Crispr, for example). Steps (i) and (ii) are not presented as active steps and are not required to be carried out. They are merely descriptive of the NPC. Active language that requires the steps be carried out would address the anticipation rejection. Applicant argues that Surendran does not disclose that the population of transplanted NPCs are at least 90% CD133 positive and SSEA4 negative. In response, as supported by paragraph 38 of the specification, because CD133 is a marker of NPCs and SSEA4 is a marker of pluripotent stem cells, and the cells of Surendran were not obtained through differentiation of pluripotent stem cells, it is held that the transplanted wildtype NPCs of Surendran are CD133+ and SSEA4-. 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 1,2,8 and 29-30 remain provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 33 and 47-58 of copending Application No. 18/296224 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 is generic to all that is recited in claim 33 of ‘224. That is, claim 33 of ‘224 falls entirely within the scope of claim 1 of the instant application. Specifically, claim 1 of ‘224 recites a specific function ASPA gene whereas instant claim 1 is drawn to a wild type or function ASPA gene. Specifics of instant claim 1 are recited in dependent claims 47-58 of the reference application. It is noted that reference claim 38 is no longer part of this rejection. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Applicant requests this rejection be withdrawn in accordance with MPEP 804(I)(B)(1)(b)(i). The application, however, is not in condition for allowance for reason set forth above. This is not the only rejection remaining. 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 VALARIE BERTOGLIO whose telephone number is (571)272-0725. The examiner can normally be reached on M-F 6AM-2:30PM. 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, Peter Paras can be reached on 571-272-4517. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. 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 https://ppair-my.uspto.gov/pair/PrivatePair. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. VALARIE E. BERTOGLIO, Ph.D. Examiner Art Unit 1632 /VALARIE E BERTOGLIO/ Primary Examiner, Art Unit 1632
Read full office action

Prosecution Timeline

Show 1 earlier event
Jun 24, 2025
Non-Final Rejection mailed — §102, §DOUBLEPATENT
Oct 24, 2025
Response Filed
Nov 13, 2025
Final Rejection mailed — §102, §DOUBLEPATENT
Mar 05, 2026
Request for Continued Examination
Mar 11, 2026
Response after Non-Final Action
Mar 18, 2026
Non-Final Rejection mailed — §102, §DOUBLEPATENT
Jun 18, 2026
Response Filed
Aug 17, 2026
Final Rejection mailed — §102, §DOUBLEPATENT (current)

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

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Prosecution Projections

5-6
Expected OA Rounds
64%
Grant Probability
94%
With Interview (+30.2%)
3y 3m (~3m remaining)
Median Time to Grant
High
PTA Risk
Based on 868 resolved cases by this examiner. Grant probability derived from career allowance rate.

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