Prosecution Insights
Last updated: July 17, 2026
Application No. 18/305,186

HETEROARYL COMPOUNDS FOR THE TREATMENT OF PAIN

Final Rejection §102
Filed
Apr 21, 2023
Priority
Apr 22, 2022 — provisional 63/333,873
Examiner
TOWNSLEY, SARA ELIZABETH
Art Unit
1629
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Vertex Pharmaceuticals Incorporated
OA Round
2 (Final)
25%
Grant Probability
At Risk
3-4
OA Rounds
9m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants only 25% of cases
25%
Career Allowance Rate
97 granted / 386 resolved
-34.9% vs TC avg
Strong +49% interview lift
Without
With
+48.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 12m
Avg Prosecution
50 currently pending
Career history
442
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
58.3%
+18.3% vs TC avg
§102
12.6%
-27.4% vs TC avg
§112
11.8%
-28.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 386 resolved cases

Office Action

§102
FINAL REJECTION Receipt is acknowledged of Applicants' Amendments and Remarks, filed Mar. 30, 2026. Rejections and/or objections not reiterated from previous Office Actions are hereby withdrawn. The rejections and/or objections set forth below are either maintained or newly applied, and constitute the complete set presently applied to the instant claims. STATUS OF THE CLAIMS Claims 1-122 have been canceled. Claims 123-125 have been amended and incorporate no new matter. No new claims have been added. Claims 126, 128, 131, 133, 139, 141-143, 146-148, and 150-156 stand withdrawn as drawn to nonelected inventions and/or species. Thus, claims 123-125, 127, 129, 130, 132, 134-138, 140, 144, 145, and 149 now represent all claims currently pending and under consideration. INFORMATION DISCLOSURE STATEMENT The information disclosure statement (IDS) submitted on Mar. 30, 2026 was filed after the mailing date of the non-final action on Dec. 29, 2025. The submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. RESPONSE TO ARGUMENTS Applicant’s arguments, see Remarks, pp. 42-43, filed Mar. 30, 2026, with respect to the rejections under 35 U.S.C. § 112(d) and 35 U.S.C. § 102, have been fully considered and are persuasive. Therefore, these rejections have been withdrawn. Applicant’s amendments filed Mar. 30, 2026 overcome the rejection under 35 U.S.C. § 103. Therefore, this rejection has been withdrawn. However, upon further consideration, a new ground of rejection is set forth below. NEW REJECTIONS Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 123, 124, 127, 129, 130, 132, 135, 136, and 137 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Cai et al. (USPN 6,828,329, cited on PTO-892). Cai et al. disclose the compound 2-(2-pyridinyl)-1,6-naphthyridin-4-ol (CAS RN 385784-23-6; col. 10, line 64), having the structural formula, Cai et al. Claimed Formula (I-E) PNG media_image1.png 184 322 media_image1.png Greyscale PNG media_image2.png 154 212 media_image2.png Greyscale which reads on formula (I-E) as recited by claims 123, 124, 127, 129, 130, 132, 135, 136, and 137, wherein: X5a and X6b are each nitrogen; X3b is CR3b; and R2b, R3b, R4b, R5b, R6a, and R9a are each hydrogen. As asserted by the Applicant (see Remarks dated 3/30/2026, pp. 42-43), the specification at para. [0033] defines compounds of the invention, whether identified by chemical name or chemical structure, to include all tautomers of the compounds identified by the chemical names and chemical structures provided herein. Thus, compounds of formula (I-E) as recited by claim 123 encompass all tautomers thereof, including the compound of Cai et al. For the foregoing reasons, Cai et al. anticipates claims 123, 124, 127, 129, 130, 132, 135, 136, and 137. Claim Objections Claims 125, 134, 138, 140, 144, 145, and 149 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 base claim and any intervening claims. CONCLUSION No claims are allowed. 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. CORRESPONDENCE Any inquiry concerning this communication or earlier communications from the examiner should be directed to SARA E. TOWNSLEY whose telephone number is 571-270-7672. The examiner can normally be reached on Mon-Fri from 10:00 am to 6:00 pm (EST). If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Jeff 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 an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://portal.uspto.gov/external/portal. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). /SARA E. TOWNSLEY/Examiner, Art Unit 1629
Read full office action

Prosecution Timeline

Apr 21, 2023
Application Filed
Dec 29, 2025
Non-Final Rejection mailed — §102
Mar 30, 2026
Response Filed
Jun 15, 2026
Final Rejection mailed — §102 (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

3-4
Expected OA Rounds
25%
Grant Probability
74%
With Interview (+48.7%)
3y 12m (~9m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 386 resolved cases by this examiner. Grant probability derived from career allowance rate.

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