Prosecution Insights
Last updated: April 19, 2026
Application No. 18/258,873

CONOLIDINE ANALOGUES AS SELECTIVE ACKR3 MODULATORS FOR THE TREATMENT OF CANCER

Non-Final OA §102§112
Filed
Jun 22, 2023
Examiner
HAVLIN, ROBERT H
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Research Triangle Institute (Rti International)
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
2y 11m
To Grant
80%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allow Rate
534 granted / 1016 resolved
-7.4% vs TC avg
Strong +27% interview lift
Without
With
+27.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
99 currently pending
Career history
1115
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
30.8%
-9.2% vs TC avg
§102
24.8%
-15.2% vs TC avg
§112
28.2%
-11.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1016 resolved cases

Office Action

§102 §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 a 371 of PCT/EP2021/087174 (12/22/2021) and claims foreign priority to EP 20216606.2 (12/22/2020). Election/Restrictions Applicant's election with traverse of Group I, claims 16-22, in the reply filed on 12/22/25 is acknowledged. The traversal is on the ground(s) that there would not be a search burden. This is not found persuasive because a search of generic formula (2) results in hundreds of thousand results that require consideration and thus presents a search burden. The requirement is still deemed proper and is therefore made FINAL. Applicant also elected the species WW-74 having the following structure: PNG media_image1.png 150 207 media_image1.png Greyscale Corresponding to formula (2) when A2 is CH; A3 is N; A4 is NR11; R11 is S(O)2R22; R22 is phenyl; A5-A8 are CH; L is CHR21; R21 is OH; o is 2; p is 1; R16 and R17 form C=CH-CH3; R18 is C5-alkyl determined to read on claims 16, 17, 19, 20 and 22. As detailed in the following rejections, the generic claim encompassing the elected species was not found patentable. Therefore, the provisional election of species is given effect, the examination is restricted to the elected species only, and claims not reading on the elected species are held withdrawn. MPEP 803.02; Ex parte Ohsaka, 2 USPQ2d 1460, 1461 (Bd. Pat. App. lnt. 1987). Accordingly, claims 18 and 21 are hereby withdrawn. Should applicant, in response to this rejection of the Markush-type claim, overcome the rejection through amendment, the amended Markush-type claim will be reexamined to the extent necessary to determine patentability of the Markush-type claim. See MPEP 803.02. 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. Claims 16, 17, 19, 20 and 22 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. Claim 16 has the language: “or a stereoisomer, enantiomer, racemic, thereof” which one of skill in the art would find confusing as to the meaning of “racemic, thereof”. Claim 16 appears to have a typo at “attached from a group selected from”: PNG media_image2.png 94 790 media_image2.png Greyscale rendering the claim unclear as to the scope of R16 and R17. Thus, claim 16 and those that depend therefrom are indefinite. Claim Rejections - 35 USC § 102 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 16, 17, 19, 20 and 22 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Nazare et al. (US20030199689). Nazare teaches Example 88 ([0547]; claims 4): PNG media_image3.png 384 625 media_image3.png Greyscale including as a pharmaceutical preparation comprising a pharmaceutically acceptable carrier (claim 6). Thus, Nazare’s compound corresponds to claim 1’s formula (2) when A2 is CH; A3 is N; A4 is NR11; R11 is aryl (phenyl) substituted by Z1 of Cl; A5-8 are CH; L is C(O)NH; o is 2; p is 1; R16 and R17 are H; R18 is isopropyl. Conclusion No claims allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT H HAVLIN whose telephone number is (571)272-9066. The examiner can normally be reached 9am - 6pm. 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, Kortney Klinkel can be reached at (571) 270-5293. 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. /ROBERT H HAVLIN/Primary Patent Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Jun 22, 2023
Application Filed
Feb 23, 2026
Non-Final Rejection — §102, §112 (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
53%
Grant Probability
80%
With Interview (+27.2%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 1016 resolved cases by this examiner. Grant probability derived from career allow rate.

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