Prosecution Insights
Last updated: August 14, 2026
Application No. 17/906,742

AMINOPYRIMIDINE DERIVATIVES AND THEIR USE AS ARYL HYDROCARBON RECEPTOR MODULATORS

Non-Final OA §102
Filed
Sep 19, 2022
Priority
Mar 27, 2020 — provisional 63/000,584 +1 more
Examiner
MARTIN, KEVIN STEPHEN
Art Unit
1624
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Dong-A St Co. Ltd.
OA Round
3 (Non-Final)
76%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
113 granted / 149 resolved
+15.8% vs TC avg
Strong +24% interview lift
Without
With
+24.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
67 currently pending
Career history
181
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
24.7%
-15.3% vs TC avg
§102
17.0%
-23.0% vs TC avg
§112
41.4%
+1.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 149 resolved cases

Office Action

§102
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on May 1, 2026 has been entered. Claims Status and Response to Amendments The amendments filed May 1, 2026, have been acknowledged and entered. Claims 1-6, 10-14 and 21-27 are pending. Election/Restriction The present examination is based on Applicant’s election without traverse of Group I (presently claims 1-6 and 10-14) and the species corresponding to 2-((4-(6-(4-chlorophenyl)-2-(pyridin-3-yl)pyrimidin-4-yl)piperazin-l-yl)sulfonyl)ethan-l-ol (Example 239) in the reply filed July 8, 2025. Applicant amendments filed May 1, 2026 overcame the art rejection set forth in the previous office action. The search has therefore been expanded in view of the amended claims to Formula (I) and new art was found. Claims 1-6 and 10-14 read on the expanded subgenus. Claim 21-27 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on July 8, 2025. 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. Claims Objections and Allowable Subject Matter Claims 13 is objected to because of the following informalities: Claim 13 is objected to for having multiple periods. See claim 13, many of the recited compound numbers have a period after the number (e.g. see PNG media_image1.png 290 851 media_image1.png Greyscale …). MPEP 608.01(m) states each claim begins with a capital letter and ends with a period. Periods may not be used elsewhere in the claims except for abbreviations. See Fressola v. Manbeck, 36 USPQ2d 1211 (D.D.C. 1995). Where a claim sets forth a plurality of elements or steps, each element or step of the claim should be separated by a line indentation, 37 CFR 1.75(i). The claims should be amended to remove the extra periods. Compounds may be separated, for instance, by a semi colon. Appropriate correction is required. Response to Arguments Applicant' s arguments filed May 1, 2026 have been fully considered but they are not persuasive. Applicant states the numbering of the compounds in Claim 13 has been corrected with parentheses, and the listed compounds are now separated by semicolons (page 1 of remarks). This argument is not found persuasive because claim 13 still has multiple periods as set forth above. For instance, at least compounds labeled 46-52 (see above) are still listed with a number and a period. The extra periods should be deleted and compounds may be separated, for instance, by a semi colon. The rejection is still deemed proper and thus maintained. Claim 13 is 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 and rewritten to overcome the objection above regarding multiple periods. The following is a statement of reasons for the indication of allowable subject matter: The closest references to the instant claim are Tsuzuki et al. (WO2009/125870 A1)(hereinafter “Tsuzuki”) and Sheridan et al. (WO2012/080729 A2)(hereinafter “Sheridan”) which are discussed in the rejections herein. Tsuzuki and Sheridan do not teach the required claim limitations and there is no teaching or suggestion which would have motivated a person of ordinary skill in the art before the effective filing date of the instant application to selectively modify a compound of the references into the claimed invention with any reasonable expectation of success. Rejections Necessitated by Applicant Amendment 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. Claims 1, 3, 5-6, 10-12 and 14 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Tsuzuki et al. (WO2009/125870 A1)(hereinafter “Tsuzuki”). Tsuzuki teaches compounds 393-396 (see page 115, compounds 393-396; pictured below for convenience) which correspond to instant Formula (I) wherein X1 and X2 are N; X3 is CR2 wherein R2 is H; Ar1 and Ar2 are each phenyl substituted with halo (F and/or Cl) ; E and D form a monocyclic C4 or C5 heterocycloalkyl ring comprising 1 N atom (piperidinyl or pyrrolidinyl); G is –(CO)O-; and R1 is C1 or C2 alkyl. Tsuzuki further teaches a pharmaceutical composition comprising compounds 393-396 and a pharmaceutically acceptable carrier (see page 22, lines 15-20, compounds of the present invention can be used as pharmaceutical preparations such tablets with a pharmaceutically acceptable carrier). Tsuzuki teaches each and every claim limitation and therefore anticipates the invention. PNG media_image2.png 417 408 media_image2.png Greyscale Claim 1-6, 10-12 and 14 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sheridan et al. (WO2012/080729 A2)(hereinafter “Sheridan”). Sheridan teaches compound 180 (see page 64, compound 180; pictured below for convenience) which correspond to instant Formula (I) wherein X1 and X2 are N; X3 is CR2 wherein R2 is H; Ar1 is unsubstituted pyridinyl; Ar2 is phenyl substituted with halo (F) ; E and D form a monocyclic C4 heterocycloalkyl ring comprising 2 N atoms (piperazinyl); G is –(CO)O-; and R1 is C2 alkyl. Sheridan further teaches a pharmaceutical composition comprising compound 180 and a pharmaceutically acceptable carrier (see page 229, lines 1-15, pharmaceutical compositions of the invention may comprise…a pharmaceutically acceptable carrier). Sheridan teaches each and every claim limitation and therefore anticipates the invention. PNG media_image3.png 300 662 media_image3.png Greyscale Conclusion No claim is allowed. 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 at (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. June 4, 2026 /KEVIN S MARTIN/Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Sep 19, 2022
Application Filed
Jul 28, 2025
Non-Final Rejection mailed — §102
Oct 27, 2025
Response Filed
Jan 02, 2026
Final Rejection mailed — §102
May 01, 2026
Request for Continued Examination
May 04, 2026
Response after Non-Final Action
Jun 05, 2026
Non-Final Rejection mailed — §102 (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
76%
Grant Probability
99%
With Interview (+24.5%)
3y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 149 resolved cases by this examiner. Grant probability derived from career allowance rate.

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