Prosecution Insights
Last updated: July 17, 2026
Application No. 18/248,035

COMPOUNDS AND METHODS OF TREATING CANCERS

Final Rejection §112
Filed
Apr 05, 2023
Priority
Oct 07, 2020 — CN PCT/CN2020/119834 +2 more
Examiner
FETTEROLF, BRANDON J
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Cullgen (Shanghai) Inc.
OA Round
2 (Final)
51%
Grant Probability
Moderate
3-4
OA Rounds
3m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 51% of resolved cases
51%
Career Allowance Rate
107 granted / 210 resolved
-9.0% vs TC avg
Strong +17% interview lift
Without
With
+16.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
55 currently pending
Career history
265
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
32.3%
-7.7% vs TC avg
§102
12.5%
-27.5% vs TC avg
§112
21.6%
-18.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 210 resolved cases

Office Action

§112
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 . Response to Amendment The amendment file on 3/23/2026 in response to the Non-Final rejection of 11/20/2025 is acknowledged and has been entered. Claims 60-62 and 66-79 are currently pending and under consideration. The species election is withdrawn in view of Applicants amendments. Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement filed on 3/23/2026 is acknowledged and has been considered except where lined through. Rejections Withdrawn in view of Amendments: The rejection of claims 60-62, 64 and 66-79 under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite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or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention are withdrawn in view of the amendment to claim 60. The rejection of claim(s) 60-62, 64, 67, 72 and 77-78 under 35 U.S.C. 102 a(1) as being anticipated by Crew et al. (US20180179183A1, 2018-06-28) is withdrawn in view of the Amendment to claim 60 to limit the compound of Formula I RING A to be Formula A-5 wherein X1 and X2 are N. The rejection of Claim(s) 60-62, 69, 70-74 and 77-78 under 35 U.S.C. 102(a)(2) as being anticipated by Plewe et al. (US20230093099A1, 2023-03-23) is withdrawn in view of the amendment to claim 60 to limit the compound of Formula I RING A to be Formula A-5 wherein X1 and X2 are N and R11 does not include an optionally substituted aryl. The provisional rejection of Claims 60-62, 69, 70-74 and 77-78 on the ground of nonstatutory double patenting as being unpatentable over claims 18, 58, 74-76, 79-80 and 104 of copending Application No. 17600,808 (reference application) is withdrawn in view of the amendment to claim 60 to limit the compound of Formula I RING A to be Formula A-5 wherein X1 and X2 are N and R11 does not include an optionally substituted aryl. New Rejections Necessitated by Amendment: Compact Prosecution A telephone call was made to Applicants representative, Christina Hoong, on 4/6/2026 to discuss the rejections set forth below and potential examiners amendment. Applicants representative requested an office action so that Applicants can have more time. 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. Claim 76 is 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. Claim 76 recites the limitation " 2-(2,6-dioxopiperidin-3-yl)-5-((6-oxo-6-(4-(4-(quinolin-2-yl)-1H-pyrazol-1-yl)piperidin-1-yl)hexyl)amino)isoindoline-1,3-dione (GS-006)”. In view of the specification, GS-006 has the following structure PNG media_image1.png 56 328 media_image1.png Greyscale which does not have X2 as a Nitrogen. As such, there is insufficient antecedent basis for this limitation in the claim. Conclusion Claims 60-62, 66-75 and 77-79 are in condition for allowance. The closest prior art is considered to be Plewe et al. (US20230093099A1, 2023-03-23), as set forth in the prior Non-Final rejection. However, Plewe et al. differs from the instantly claimed compound in that the claimed compound of Formula I RING A is Formula A-5 wherein X1 and X2 are N and R11 does not include an optionally substituted aryl. The prior art does not teach or suggest specific modification at the bicyclic ring with a variable other than an aryl ring. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 BRANDON J FETTEROLF whose telephone number is (571)272-2919. The examiner can normally be reached M-F 6AM-4PM. 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, Jeffrey S Lundgren can be reached at 571-272-5541. 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. /BRANDON J FETTEROLF/Primary Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Apr 05, 2023
Application Filed
May 30, 2025
Response after Non-Final Action
Nov 20, 2025
Non-Final Rejection mailed — §112
Mar 19, 2026
Response Filed
Apr 22, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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

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Prosecution Projections

3-4
Expected OA Rounds
51%
Grant Probability
68%
With Interview (+16.7%)
3y 7m (~3m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 210 resolved cases by this examiner. Grant probability derived from career allowance rate.

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