Prosecution Insights
Last updated: July 17, 2026
Application No. 18/028,286

METTL3 INHIBITORY COMPOUNDS

Final Rejection §112
Filed
Mar 24, 2023
Priority
Oct 06, 2020 — GB 2015832.5 +3 more
Examiner
MARTIN, KEVIN STEPHEN
Art Unit
1624
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Storm Therapeutics Limited
OA Round
2 (Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
110 granted / 146 resolved
+15.3% vs TC avg
Strong +24% interview lift
Without
With
+24.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
43 currently pending
Career history
179
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
34.8%
-5.2% vs TC avg
§102
14.5%
-25.5% vs TC avg
§112
36.8%
-3.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 146 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 . Status of Claims and Response to Amendments The amendments filed April 23, 2026 have been acknowledged and entered. Claims 1-19 and 24-25 are pending. Information Disclosure Statements Acknowledgement is made of the Information Disclosure Statement filed on April 23, 2026. All references have been considered except where marked with a strikethrough. Election/Restriction The present examination is based on Applicant’s election of Group I (claims 1-19 and 25, drawn to a compound of Formula I) and species corresponding to Example 10 (pictured below for convenience) in the response filed November 7, 2025. Claim 24 is withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. The improper Markush rejection set forth in the previous office action has been withdrawn in view of Applicant amendment to the claims so that X is an imidazopyridine core. The search has thus been expanded to include the full scope of Formula (I) presently claimed. PNG media_image1.png 137 544 media_image1.png Greyscale Withdrawn Rejections Applicant is notified that any outstanding rejection or objection that is not expressly maintained in this Office Action has been withdrawn or rendered moot in view of Applicant’s amendments and/or remarks. Claim Objections Claim 18 is objected to for being of a different scope than claims 1-17, 19 and 25. Compounds, corresponding compositions, a method of use and a process of making that are of the same scope are considered to form a single inventive concept under PCT Rule 13.1, 37 CFR 1.475(d). In the present case, claims 1-17, 19 and 25 require a compound of Formula (I) which is not required by claim 18. The claims are thus drawn to different inventive concepts and lack unity of invention. The claims should be amended to have the same scope. Failure to amend the claims consistent with the rule could result in a requirement for restriction. Claim 18 is objected to for failing to comply with rule 1.141(a) (pasted below for convenience). Claim 18 has approximately 50 species. This number of compounds cannot be considered a reasonable number according to rule 1.141(a). In re Fressola, 22 USPQ 2nd 1828, indicates that the Examiner may reject for Applicants’ failure to follow a Rule. Claim 18 should be amended to depend from claim 1. Failure to amend the claims consistent with the rules may result in a restriction requirement. § 1.141 Different inventions in one national application. (a) Two or more independent and distinct inventions may not be claimed in one national application, ex-cept that more than one species of an invention, not to exceed a reasonable number, may be specifically claimed in different claims in one national application, provided the application also includes an allowable claim gen-eric to all the claimed species and all the claims to species in excess of one are written in dependent form (§ 1.75) or otherwise include all the limitations of the generic claim. Response to Arguments Applicant’s arguments filed April 23, 2026 have been fully considered but they are not persuasive. Applicant argues that searching the species of claim 18 does not place an undue burden on the Examiner because they share a common alkylamino substituted imidazopyridine (page labeled 35 of remarks). This argument is not found persuasive for the reason that the species require no common formula (e.g. Formula (I)) and the species are structurally distinct and each requires a separate search. The above objections could be overcome by amending claim 18 to depend from claim 1 and to delete those compounds which are not embraced by claim 1. Maintained Rejections Double Patenting Claim 1-19 and 25 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-18 of U.S. Patent No. US12,358,915. Although the claims at issue are not identical, they are not patentably distinct from each other because the instant claims are anticipated by the patent claims. The reasons for this rejection were set forth in the previous Office Action mailed December 23, 2025 and are incorporated herein by reference. Response to Arguments Applicant’s arguments filed April 23, 2026 have been fully considered but they are not persuasive. Applicant argues the claims have now been amended such that when Z is a pyridyl group, the R10 group is a monocyclic heterocyclyl. Such a combination of groups is not disclosed in US 12,358,915 and therefore there is no overlap with this patent (page labeled 38 of response). Examiner acknowledges that the combination of such groups is not disclosed in the patent claims; however, the rejection is maintained because the patented genus still overlaps and therefore anticipates the instant claims. For example, the patent claims are drawn to a compound, X-Y-Z, wherein X is selected from PNG media_image2.png 106 142 media_image2.png Greyscale ; Y is selected from PNG media_image3.png 63 228 media_image3.png Greyscale ; and Z is selected from PNG media_image4.png 169 175 media_image4.png Greyscale (instant claims include wherein Z is PNG media_image5.png 245 334 media_image5.png Greyscale ) The X, Y and Z groups of the patent correspond to those presently claimed. The rejection is still deemed proper and thus maintained. Rejections Necessitated by Applicant Amendment Claim Rejections - 35 USC § 112d The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claim 6 is rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 6 depend from claim 1 and recites a compound wherein X is PNG media_image6.png 206 292 media_image6.png Greyscale ; however, claim 1 has been amended to recite X is PNG media_image7.png 205 281 media_image7.png Greyscale . Claim 6 does not provide any further limitation to the subject matter of claim 1. Claim 6 is therefore rejected for failing to further limit the subject matter of the claim upon which it depends. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Conclusion No claim is allowed. THIS ACTION IS MADE FINAL. 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 KEVIN MARTIN whose telephone number is (571)270-0917. The examiner can normally be reached Monday - Friday 8 am - 5 pm. 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 Murray can be reached on (571) 272-9023. 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. May 15, 2026 /K.S.M./Examiner, Art Unit 1624 /BRUCK KIFLE/Primary Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Mar 24, 2023
Application Filed
Dec 23, 2025
Non-Final Rejection mailed — §112
Apr 23, 2026
Response Filed
May 28, 2026
Final Rejection mailed — §112 (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

3-4
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+24.5%)
3y 5m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 146 resolved cases by this examiner. Grant probability derived from career allowance rate.

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