Prosecution Insights
Last updated: October 04, 2026
Application No. 18/853,473

ADENO-ASSOCIATED VIRUS POTENCY ASSAY AND USES THEREOF

Non-Final OA §103
Filed
Oct 02, 2024
Priority
Apr 05, 2022 — provisional 63/327,574 +1 more
Examiner
POPA, ILEANA
Art Unit
Tech Center
Assignee
Astellas Gene Therapies, Inc.
OA Round
1 (Non-Final)
21%
Grant Probability
At Risk
1-2
OA Rounds
2y 8m
Est. Remaining
36%
With Interview

Examiner Intelligence

Grants only 21% of cases
21%
Career Allowance Rate
181 granted / 845 resolved
-38.6% vs TC avg
Strong +15% interview lift
Without
With
+15.1%
Interview Lift
resolved cases with interview
Typical timeline
4y 8m
Avg Prosecution
53 currently pending
Career history
902
Total Applications
across all art units

Statute-Specific Performance

§101
2.3%
-37.7% vs TC avg
§103
48.6%
+8.6% vs TC avg
§102
7.6%
-32.4% vs TC avg
§112
20.7%
-19.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 845 resolved cases

Office Action

§103
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 . 1. Claims 3, 5, 7-29, 31-34, 37-47, 49-55, and 57-65 were cancelled. Claims 6, 30, 35, 48, 56, 66, and 67 have been amended. Claims 1, 2, 4, 6, 30, 35, 36, 48, 56, 66, and 67 are pending and under examination. Claim Objections 2. Claim 1 is objected to because of the recitation “a quantity” in step c). Correction “the quantity” is required. 3. Claim 35 is objected to because of the recitation “a polynucleotide”. Correction “the polynucleotide” is required. Claim Rejections - 35 USC § 103 4. 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. 5. Claims 1, 2, 4, 6, 30, 35, 36, 48, 56, 66, and 67 are rejected under 35 U.S.C. 103 as being unpatentable over Drouin et al. (WO 19/210137), in view of both Duong et al. (J. Neuromusc. Dis., online September 2020, 8: 63-77) and Laporte et al. (WO 2019/007991), as evidenced by both Perez et al. (WO 22/192622) and Shieh et al. (Neurology, 2020, 94, 15_Supplement, Abstract). Drouin et al. teach that AADC-encoding AAV is useful for AADC delivery to subjects affected by a disease associated with AADC loss-of-function (see [0004]; [0008]; [0205]-[0207]). Drouin et al. teach a method for determining the efficacy of an AAV encoding L-amino acid decarboxylase (AADC), the method comprising: contacting permissive cells with the AAV; lysing the cells; adding L-DOPA substrate to the cell lysate; measuring the amount of dopamine produced in the cell lysate via chromatography; determining relative efficacy by comparing the result to a reference AAV; selecting the AAV having the desired efficiency for gene therapy and aliquoting into a container (i.e., releasing the selected AADC-encoding AAV for treating the disease) (claims 1, 2, and 6) (see [0004]; [0015]-[0018]; [0031]; [0273]; [0290]-[0291]). Drouin et al. do not teach an AAV encoding MTM1 from the desmin promoter (claims 30, 35, and 36). However, one of skill in the art would have reasonably concluded that the method of Drouin et al. could be applied to assess and select other AAVs for therapy. Duong et al. teach clinical trial NCT03199469 for treating XLMTM by administering resamirigene bilparvovec (or AT132; an MTM1-expressing AAV) (see Abstract; p. 65, column 2). As evidenced by Perez et al., resamirigene bilparvovec is an AAV whose genome has the sequence set forth by SEQ ID NO: 5, which comprises a nucleic acid encoding human MTM1 operably linked to the desmin promoter and which is identical to the claimed SEQ ID NO: 2 (claim 48) (see p. 25, Table 1; see the attached Sequence Alignment). As evidenced by Shieh et al., NCT03199469 used doses of 1x1014 vg/kg and 3x1014 vg/kg (claim 56 and 66) (see Abstract). One of skill in the art would have found obvious to extrapolate the method of Drouin et al. to AT132 and further administering the selected AT132 to XLMTM patients, with the reasonable expectation that doing so would result in optimal therapeutic effect. Since the cleavable substrate phosphoinositide was routinely used in the prior art to assess MTM1 activity (see Laporte et al., p. 15, lines 1-5; p. 23, lines 24-30), one of skill in the art would have also found obvious to use phosphoinositide as the substrate, to achieve the predictable result of assessing AT132 efficiency. By doing so, one of skill in the art would have practiced a method as recited in claims 1, 2, 4, 56, and 66. With respect to claim 67, the limitation of instructions only represents printed matter that is not related to the AAV or the method for determining efficiency, and thus, it is not patentably significant. MPEP 2111.05 I A/B states: “To be given patentable weight, the printed matter and associated product must be in a functional relationship. Additionally, where the printed matter and product do not depend upon each other, no functional relationship exists. For example, in a kit containing a set of chemicals and a printed set of instructions for using the chemicals, the instructions are not related to that particular set of chemicals. In re Ngai, 367 F.3d at 1339.” Furthermore, kits have been routinely used in the prior art. One of skill in the art would have been motivated to assemble a kit, i.e., put the reagents in a box containing instructions how to use the reagents, because they are convenient to use and save time. Thus, the claimed invention was prima facie obvious at the time of its effective filling date. 6. No claim is allowed. No claim is free of prior art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ILEANA POPA whose telephone number is (571)272-5546. The examiner can normally be reached 8:00 am to 4:30 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, 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. /ILEANA POPA/ Primary Examiner, Art Unit 1633
Read full office action

Prosecution Timeline

Oct 02, 2024
Application Filed
Aug 17, 2026
Non-Final Rejection mailed — §103 (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

1-2
Expected OA Rounds
21%
Grant Probability
36%
With Interview (+15.1%)
4y 8m (~2y 8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 845 resolved cases by this examiner. Grant probability derived from career allowance rate.

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