Prosecution Insights
Last updated: April 19, 2026
Application No. 18/524,261

COMPOSITE MEMBRANE FOR DESALINATION

Non-Final OA §112
Filed
Nov 30, 2023
Examiner
ROTONDI, CONNOR JON
Art Unit
1779
Tech Center
1700 — Chemical & Materials Engineering
Assignee
King Fahd University Of Petroleum And Minerals
OA Round
1 (Non-Final)
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant

Examiner Intelligence

Grants only 0% of cases
0%
Career Allow Rate
0 granted / 0 resolved
-65.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
14 currently pending
Career history
14
Total Applications
across all art units

Statute-Specific Performance

§103
52.9%
+12.9% vs TC avg
§102
17.7%
-22.3% vs TC avg
§112
29.4%
-10.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 0 resolved cases

Office Action

§112
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 . Priority This application is not claiming priority to any earlier patent documentation. The application as examined with the following priority date: 11/30/2023. Information Disclosure Statement The information disclosure statement (IDS) submitted on 11/30/2023 has been considered by the examiner. The applicant has disclosed multiple references within the body of their specification that are not listed on the submitted IDS from 11/30/2023. It is not required for the applicant to place these references on an IDS, however, if the applicant would like the references within their specification to be considered by the examiner, they should be submitted on an additional IDS. Claim Interpretation To promote clarity and efficiency in the examination process (compact prosecution), the following term as outlined below is interpreted, but not limited to, the following: Irregular-sized – non-uniform, altering in size, shape, pattern, etc. 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 1-20 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. In regards to claims 1 and 19, they indicate a desalination membrane and a desalination process, however nowhere in the body of the respective claims do they indicate how the membrane or process is used for “desalination”. In regards to claim 11, the phrase “the salt” lacks antecedent basis and thus renders the claim indefinite. The word “the” within the mentioned phrase creates the illusion that the applicant is attempting to claim salt within a salt solution, opposed to the salt rejection percentage of the membrane; which is what is believed the applicant is attempting to claim. In regards to claim 12, the applicant states “dialyzing the poly-(DADMAC-co-DADAC) in the presence of a base and drying to form the poly-(DADMAC-co-DADA)”. While it is believed the applicant is attempting to claim dialyzing poly-(DADMAC-co-DADAC) in the presence of a base and drying to form the poly-(DADMAC-co-DADA) of Formula [I]; the compound/structure of Formula [I] cannot be inherently inferenced from the poly-(DADMAC-co-DADA) language alone. The remainder of claims are rejected due to their dependency of claim 1. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CONNOR J ROTONDI whose telephone number is (571)272-2058. The examiner can normally be reached M-F 8:00am-4:30pm. 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, Bobby Ramdhanie can be reached at (571) 270-3240. 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. /CONNOR J ROTONDI/Examiner, Art Unit 1779 /Bobby Ramdhanie/Supervisory Patent Examiner, Art Unit 1779
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Prosecution Timeline

Nov 30, 2023
Application Filed
Feb 03, 2026
Non-Final Rejection — §112
Feb 20, 2026
Examiner Interview Summary

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Prosecution Projections

1-2
Expected OA Rounds
Grant Probability
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 0 resolved cases by this examiner. Grant probability derived from career allow rate.

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