Prosecution Insights
Last updated: August 16, 2026
Application No. 18/294,336

PYRROLOPYRIDINE-3- AND 4-CARBOXAMIDE COMPOSITIONS AND METHODS FOR CELLULAR PROLIFERATION

Non-Final OA §112
Filed
Feb 01, 2024
Priority
Aug 02, 2021 — provisional 63/228,348 +1 more
Examiner
PECKHAM, RICHARD GRANT
Art Unit
1627
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Rockefeller University
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
88 granted / 131 resolved
+7.2% vs TC avg
Strong +37% interview lift
Without
With
+37.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
68 currently pending
Career history
182
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
29.1%
-10.9% vs TC avg
§102
16.4%
-23.6% vs TC avg
§112
29.5%
-10.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 131 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 . Detailed Action Claims 1-21 and 23-26 are currently pending. Election/Restriction Applicant’s election with traverse of Group 1 (Claims 1-21 and 23, drawn to compounds and compositions thereof) and the elected species Example 13, PNG media_image1.png 131 160 media_image1.png Greyscale , in the reply filed on 7/06/2026 is acknowledged. Again, election was made with traverse. Applicant argues that the required restriction/election is improper because Gnedeva, despite an earlier effective filing date, does not constitute prior art under 35 USC 102(a)(2) and submits that both the Gnedeva WIPO application and the instant application were both owned at the time of filing by the same person not later than the effective filing date of the instant invention. Applicant’s argument is persuasive and the requirement for a group and species election is withdrawn. Further, Gnedeva is disqualified as prior art and not applied in the rejections below. All pending claims are examined on the merits herein. Claim Objections Claims 2-21 and 23 are objected to because of the following informalities: Claims 2-21 and 23 recite “A compound” rather than “The compound” in the claim preamble or, in Claim 23 drawn to composition, “a compound” rather than “the compound” in reference to compounds previously described in a preceding claim. Appropriate correction is required. Claim Rejections - 35 USC § 112(b) 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 1-4, 7-9, 11-21 and 23-26 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 regards as the invention. Claims 1 and 7-8 stipulate that Q or Q’ may be or are thiazole: PNG media_image2.png 91 86 media_image2.png Greyscale . However, Q and Q’ are depicted as follows in Claim 1: PNG media_image3.png 67 88 media_image3.png Greyscale and PNG media_image4.png 62 83 media_image4.png Greyscale , wherein thiazole formation is impossible because the carbon adjacent to both nitrogen atoms and the sulfur atom would require no less than five bonds whereas carbon is tetravalent (forming four bonds). Applicant depicts Q and Q’ as “thiazole” rings in Claims 7-8 as follows: PNG media_image5.png 82 121 media_image5.png Greyscale ; however, no double bond is present between the ring nitrogen and an adjacent carbon as required of a “thiazole” ring (see above thiazole structure). Applicant uses a known term used to describe a particular ring structure which is not possible in view of the other limitations shown in Claims 1 and 7-8. Therefore, multiple metes and bounds may be interpreted from one understanding thiazole as it is known in the art or one interpreting thiazole, not as known in the art, but as shown in the respective claims. Applicant must make clear which ring structure or structures are intended and acceptable according to the formulae of Claims 1 and 7-8. Claims 2-4, 11-21, and 23-26 are rejected by virtue of dependency. For the purpose of compact prosecution, the formulae are interpreted as drawn rather than according to the attributed ring name. Similarly, Claim 9 depicts Q or Q’ as follows: PNG media_image6.png 116 346 media_image6.png Greyscale , but refers to each compound as thiazine or dihydrothiazine. The two names used in the claim are known in the art according to the following structures, respectively: PNG media_image7.png 143 121 media_image7.png Greyscale (1,3 structure) and PNG media_image8.png 99 66 media_image8.png Greyscale . The first claimed structure accords with the second named ring, dihydrothiazine. However, no thiazine is depicted in either claimed structure (for lack of a C=N double bond) and neither of the named rings are unsaturated like the second claimed structure, which resembles a tetrahydrothiazine instead. Again, two metes and bounds may be interpreted, either according to the depicted structures in the claim or the named structures as known in the art. For the purpose of compact prosecution, the formulae are interpreted as drawn rather than according to the ascribed ring name. Closest Prior Art The closest prior art is disclosed in Kastan (Nat Commun 12, 3100 (2021). May 25, 2021. 1-12; 2/01/2024 IDS). Kastan teaches “TRULI”, PNG media_image9.png 121 127 media_image9.png Greyscale , in Panel C of Fig. 3 of Page 4, in which the following definitions of examined formula II apply: Q’ is a “thiazole” (according to the structure as drawn in Claims 7-8); however, R2 is H in both instances or at one instance. Formula II requires that said Q’ ring be a thiazolidine or a 6-7 membered heterocycle or, in the case that Q’ is a “thiazole”, R2 be an alkylamino or a carbon residue of 3-4 carbons which forms a fused ring with Q’. None of the above limitations are satisfied. Kastan teaches the single compound for use in Lats and Yap modulation toward the same ends of hair cell regeneration (Abstract). Kastan also describes the 7-azaindole core by name, possessed only by examined formula II, suggesting its importance to TRULI discovery, activity, and binding on Page 4 and in Fig. 3. Kastan does not teach saturating or expanding the five-membered heterocycle or variation at all. Therefore, one of skill in the art, lacking direction or suggestion by Kastan, would not seek to alter the sole active compound described because no motivation by Kastan is offered and no reasonable expectation of success can be inferred from the single unmodified compound. Similar considerations are made with respect to compounds of copending applications 19472621, 19629272, and Patent No. 12617785 which are not encompassed within the genus of the examined formulae. As a result, no double patenting rejections are made thereover. Conclusion No claim is allowable. Inquiries Any inquiry concerning this communication or earlier communications from the examiner should be directed to Richard G. Peckham whose telephone number is (703)756-4621. The examiner can normally be reached 8:30am - 4:30pm EST. 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 on (571) 270-5239. 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. /RICHARD GRANT PECKHAM/Examiner, Art Unit 1627
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Prosecution Timeline

Feb 01, 2024
Application Filed
Jul 29, 2026
Non-Final Rejection mailed — §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
67%
Grant Probability
99%
With Interview (+37.0%)
3y 3m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 131 resolved cases by this examiner. Grant probability derived from career allowance rate.

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