Prosecution Insights
Last updated: April 19, 2026
Application No. 18/266,793

KINASE INHIBITORS AND USES THEREOF

Non-Final OA §112
Filed
Jun 12, 2023
Examiner
ENGLISH, CONNOR KENNEDY
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Mosaica Medicines Inc.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
15 granted / 26 resolved
-2.3% vs TC avg
Strong +55% interview lift
Without
With
+55.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
49 currently pending
Career history
75
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
36.6%
-3.4% vs TC avg
§102
13.0%
-27.0% vs TC avg
§112
30.0%
-10.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 26 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 . Current Status of 18/266,793 This Office Action is responsive to the amended claims of 02/06/2024. Claims 1,20,25,27,30,38-40,43-44,46,49-52 and 54-58 are pending in this application and have been considered on the merits. Priority The instant application is a national stage entry of PCT/US2021/063724, international filing date 12/16/2021, which claims priority to U.S. Provisional Patent Application No. 63/126,364, filed 12/16/2020. Information Disclosure Statement The information disclosure statement (IDS) submitted on 02/06/2024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. 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, 25, 27, 30, 39-40, 43-44, 46, and 49-52 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. Base claim 1 recites substituents of R1-R4 that are “optionally substituted.” However the specification defines the term “substituted” as including “one or more substituents including, but not limited to” a non-exhaustive list of substituents and further states that substitution may occur at any valency-allowed position. These definitions render the scope of the claims open-ended and indeterminate with regard to the possible substituents and substitution patterns of R1-R4. Claims 20, 25, 27, 30, 39-40, 43-44, 46, and 49-52 do not remedy this issue. Claim 1 defines (R1)m where m may be 0-5. Claim 25 recites “one R1 is halogen and the other R1 is optionally substituted C2-C6 alkynyl.” This language presumes the presence of exactly two R1 substituents, but claim 1 encompasses compounds having zero, one, or more than two R1 groups. It is unclear whether claim 25 requires exactly two substituents or how the limitation applies when fewer or more than two R1 groups are present. The scope of the claim in not reasonably certain. The Examiner recommends amending the claim to incorporate a limitation specifying the value of m to clarify the scope of the claim. For example, “wherein m=2, and one R1 is halogen and the other R1 is optionally substituted C2-C6 alkynyl” would clearly limit the claim to compounds of Formula (I) having exactly two R1 substituents and remove the ambiguity noted above. Accordingly, the artisan would not be able to determine the metes and bounds of the claimed compounds with reasonable certainty, rendering the claims indefinite. Close Art Abel (WO 2006/045514, found in IDS filed 02/06/2024) discloses 3-arylamino pyridine compounds that are MAP kinase inhibitors useful in the treatment of hyperproliferative diseases (Abstract). The reference discloses 129 species of the claimed compound. Example 19 of the disclosure is the closest compound to the instantly claimed compounds and has the following structure PNG media_image1.png 133 143 media_image1.png Greyscale . This compound corresponds to the instantly claimed compound of formula (I) when m is 2; one R1 is F, the other R1 is I; G1, G3, and G4 are CH; G2 is N, q is 3; and p is 0. Example 19 differs from the instantly claimed compounds in its connectivity of the piperidine ring at the nitrogen atom, compared to the same moiety of the instant compounds that connect at a carbon. While structure activity relationship studies, including modification of heterocycle attachment connectivity, are commonly employed in medicinal chemistry, the reference does not provide any teaching that would have led the artisan to select this particular compound from among the disclosed species as a starting point for modifications. Allowable Subject Matter Claim 38 is allowed. The prior art of record does not disclose or render obvious the compounds recited in claim 38. Conclusion 1, 20, 25, 27, 30, 39-40, 43-44, 46, and 49-52 are rejected. Claims 54-58 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the case claim and any intervening claims. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CONNOR KENNEDY ENGLISH whose telephone number is (571)270-0813. The examiner can normally be reached Monday Friday, 8 a.m. 5 p.m. ET.. 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 Kosar can be reached at (571)272-0913. 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. /C.K.E./Examiner, Art Unit 1625 /Andrew D Kosar/Supervisory Patent Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Jun 12, 2023
Application Filed
Jan 08, 2026
Non-Final Rejection — §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
58%
Grant Probability
99%
With Interview (+55.0%)
3y 7m
Median Time to Grant
Low
PTA Risk
Based on 26 resolved cases by this examiner. Grant probability derived from career allow rate.

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