Prosecution Insights
Last updated: April 19, 2026
Application No. 17/632,648

PYRAZINO [1,2-B]QUINAZOLINE-3,6-DIONES DERIVATIVES, THEIR PRODUCTION AND USES THEREOF

Non-Final OA §Other
Filed
Feb 03, 2022
Examiner
ISMAIL, REHANA
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Universidade Nova De Lisboa
OA Round
2 (Non-Final)
79%
Grant Probability
Favorable
2-3
OA Rounds
3y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
56 granted / 71 resolved
+18.9% vs TC avg
Strong +29% interview lift
Without
With
+29.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
41 currently pending
Career history
112
Total Applications
across all art units

Statute-Specific Performance

§101
4.0%
-36.0% vs TC avg
§103
27.3%
-12.7% vs TC avg
§102
20.0%
-20.0% vs TC avg
§112
25.5%
-14.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 71 resolved cases

Office Action

§Other
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 . 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. Election/Restrictions All previous rejections and objections have been withdrawn in this office action. Applicant added new independent claim 18. Examiner did not fine prior art for the full scope of independent claim 1, 11 and 18. Therefore election of species requirements has been withdrawn. Examiner is making this office action non-final because of missed objection to claims 1,3-7 and 11 in the previous non-final office action. Claims 1-9, 12, and 14-17 previously withdrawn have been rejoined in this office action. Claims 1-9, and 11-18 are examined in this office action. Priority The effective filing date is 08/20/2020 because application find support on PCT /IB2020/057831. Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119 (a)-(d). Current Status of 17/632,648 This Office Action is in response to the amended claims of 09/16/2025. Claims 11 are currently amended; claim 13 was previously presented: claim 1-9, 12-17 was withdrawn (now rejoined); and claim 18 is new. Claims 1-9, and 11-18 are examined in this office action. Response to Arguments Examiner acknowledges the receipt of applicant’s claim amendment and remarks of 09/16/2025.Examiner have reviewed these remarks and amendments. Regarding 102 rejection: applicant amended claim 11 to by reciting a proviso applicant if X and Y are C then R4 is different from H; or if X and Y are C then R4 is H and R5 is PNG media_image1.png 85 65 media_image1.png Greyscale rendering moot 102 rejection. Therefore 102 rejection of claims 11 and 13 are withdrawn. Claim Objections (New) Claims 1,3-7, 11 and 18 are objected for having superscripts to all the variables instead of subscript as depicted in the formula I. For example, as shown below PNG media_image2.png 330 660 media_image2.png Greyscale Correction is required to advance to allowance. The claim narratives of all (including dependent) claims must correspond (subscript or superscript) to the variables in the illustrations. Thus, dependent claims are similarly objected to as these claims refer back to claims 1, 11, and 18 but do not remedy the rationale underpinning the basis for the objection. Conclusion All claims are objected to for informalities (see, above). Independent claims 1, 11, and 18 are free of the prior art. Bastos et. al. (Microbiological Research 159 (2004) 317-322)) discloses PNG media_image3.png 193 310 media_image3.png Greyscale (where R1 =R2 =H; X=Y=C; and R3 =R4 = R5= H (figure 2, page 320) have activity against staphylococcus bacteria (summary, page 317). Compound PNG media_image3.png 193 310 media_image3.png Greyscale does not have R5 is PNG media_image1.png 85 65 media_image1.png Greyscale when R4 is H. A person skilled in the art would not be able envision the difference between compound of formula I of independent claims 1 and 2. Therefore Bastos et.al is a close art for independent claims 1 and 2 but not a prior art. Bastos et.al. discloses PNG media_image3.png 193 310 media_image3.png Greyscale (where R1 =R2 =H; X=Y=C; and R3 =R4 = R5= H (figure 2, page 320) same as formula I of the independent claim 18 and have activity against staphylococcus bacteria (summary, page 317). Bastos does not teach a method of treating or preventing malaria in a subject with compound PNG media_image3.png 193 310 media_image3.png Greyscale (not part of compound of formula I). Therefore Bastos et.al is a close art of independent claim 18 but not a prior art. Examiner did not make 101 rejections. Gansen et. al. (J. Org. Chem. 2000, 65, 1022-1030) discloses natural compounds as follows PNG media_image4.png 348 270 media_image4.png Greyscale (page 1022, figure 1) where X and Y are C and R4 and R5 are both H, but the compounds of formula I does not support these limitation. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Rehana Ismail whose telephone number is (703)756-4776. The examiner can normally be reached Monday-Friday 9:00am-5:00pm. 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, Andrew D Kosar can be reached at (571)272-913. 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. /R.I./Examiner, Art Unit 1625 /JOHN S KENYON/Primary Patent Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Feb 03, 2022
Application Filed
Jun 05, 2025
Non-Final Rejection — §Other
Sep 05, 2025
Applicant Interview (Telephonic)
Sep 09, 2025
Examiner Interview Summary
Sep 16, 2025
Response Filed
Dec 18, 2025
Non-Final Rejection — §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

2-3
Expected OA Rounds
79%
Grant Probability
99%
With Interview (+29.4%)
3y 4m
Median Time to Grant
Moderate
PTA Risk
Based on 71 resolved cases by this examiner. Grant probability derived from career allow rate.

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