Prosecution Insights
Last updated: July 17, 2026
Application No. 18/689,256

AN ASSEMBLY WITH NEGATIVELY CHARGED IONOMER MEMBRANE FOR AQUEOUS RECHARGEABLE ZINC METAL BATTERY

Non-Final OA §102§112§Other
Filed
Mar 05, 2024
Priority
Sep 05, 2021 — IN 202111040210 +1 more
Examiner
RAMDHANIE, BOBBY
Art Unit
Tech Center
Assignee
Council of Scientific and Industrial Research
OA Round
1 (Non-Final)
44%
Grant Probability
Moderate
1-2
OA Rounds
1y 3m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
115 granted / 261 resolved
-15.9% vs TC avg
Strong +31% interview lift
Without
With
+31.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
16 currently pending
Career history
297
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
81.3%
+41.3% vs TC avg
§102
5.7%
-34.3% vs TC avg
§112
6.4%
-33.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 261 resolved cases

Office Action

§102 §112 §Other
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 . Allowable Subject Matter Claims 9 & 10 are allowed. Claim Rejections - 35 USC § 112 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 1-7 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. Claims 1-7 are directed to an electrochemical cell assembly for aqueous rechargeable zinc-metal batteries however, the body of Claim 1 does not indicate how the electrochemical cell assembly functions for the intended function (“for aqueous rechargeable zinc-metal batteries”). Dependent claims are included here for the same indefinite issue. 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. Claim 8 is rejected under 35 U.S.C. 102a (1) as being anticipated by, Yun et al, “Crosslinked sulfonated poly(vinyl alcohol)/sulfonated multi-walled carbon nanotubes nanocomposite membranes for direct methanol fuel cells,” Journal of Membrane Science 380 (2011) 208– 215. Available online July 8, 2011. Regarding Claim 8, Yun et al discloses the negatively charged dendrite inhibiting ionomer membrane comprising of crosslinked sulfonated polyvinyl alcohol (PVS) with polyvinyl alcohol (PVA), in a ratio range of 30:70 to 70:30 (See Figure 2 of Yun et al. There is negative charge distribution from the carbonyl and sulfonated groups as shown in the Figure. The function of dendrite inhibiting would be an inherent property since the membrane of Yun et al has the crosslinked sulfonated polyvinyl alcohol (PVS) with the polyvinyl alcohol (PVA) in the ratio range of 30:70 to 70:30. PNG media_image1.png 309 393 media_image1.png Greyscale Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BOBBY RAMDHANIE whose telephone number is (571)270-3240. The examiner can normally be reached Monday thru Friday. 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, Patricia Mallari can be reached at 571-272-4729. 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. /Bobby Ramdhanie/Supervisory Patent Examiner, Art Unit 1779
Read full office action

Prosecution Timeline

Mar 05, 2024
Application Filed
Jun 30, 2026
Non-Final Rejection mailed — §102, §112, §Other (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
44%
Grant Probability
75%
With Interview (+31.3%)
3y 8m (~1y 3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 261 resolved cases by this examiner. Grant probability derived from career allowance rate.

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