Prosecution Insights
Last updated: April 19, 2026
Application No. 18/021,320

PYRIMIDINYL SULFONAMIDES AS INHIBITORS OF ACK1/TNK2 TYROSINE KINASE

Non-Final OA §103§DP
Filed
Feb 14, 2023
Examiner
VISHNYAKOVA, ELENA VLADIMIROVNA
Art Unit
1691
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
H. Lee Moffitt Cancer Center and Research Institute, Inc.
OA Round
1 (Non-Final)
60%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
99%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allow Rate
12 granted / 20 resolved
At TC average
Strong +73% interview lift
Without
With
+72.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
32 currently pending
Career history
52
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
17.2%
-22.8% vs TC avg
§112
18.4%
-21.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 20 resolved cases

Office Action

§103 §DP
DETAILED ACTION This office action is in response to applicant’s filing dated November 24, 2025. 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 Claims 1 – 3 and 6 - 23 are pending in the instant application. Election/Restrictions Applicant’s election without traverse of invention Group I, claims 1-3, 6, 12, and 18, directed to a compound of Formula I or Formula II, in the reply filed on November 24, 2025 is acknowledged. Claims 7 – 11, 13 – 17, and 19 – 23 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim.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 November 24, 2025. Applicant’s election without traverse of invention compound of formula: PNG media_image1.png 160 177 media_image1.png Greyscale as a single species, in the reply filed on November 24, 2025 is acknowledged. Upon performing the search of prior art Examiner detected compounds related to non-elected species. Hence, the election of species has been withdrawn and examination will proceed to the full scope of claims 1-3, 6, 12, and 18, Group I invention. Claims 1-3, 6, 12, and 18 are under consideration in the present office action. Priority The present application is a 371 of PCT/US2021/046117, filed August 16, 2021, which claims the benefit of priority to U.S. Provisional Application No. 63/065,766, filed August 14, 2020, U.S. Provisional Application No. 63/178,350, filed April 22, 2021, and U.S. Provisional Application No. 63/229,392, filed August 4, 2021. Information Disclosure Statement The information disclosure statements (IDS) submitted on 05/30/2023 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claim Rejections - 35 USC § 103 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3, 6, 12, and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Schönbrunn et al (WO 2017/066428 A1, cited in IDS, filed 05/30/2023, hereinafter Schönbrunn). Instant claims are drawn to a compound of genus formula I PNG media_image2.png 201 198 media_image2.png Greyscale or formula II PNG media_image3.png 189 226 media_image3.png Greyscale , where R1 is selected from C1-C6 alkyl, C3-C6 cycloalkyl, and aryl; R2- is selected from hydrogen and halo; R3 is selected from C1-C6 alkyl and halo; R4 is selected from C1-C6 alkoxy, aryloxy, and C3-C6 cycloalkyoxy; R5 and R7 is C1-C6 alkoxy, C3-C6 cycloalkoxy,C1-C6 alkyl, halo, cyano, and hydroxy; L is selected from a bond, C1-C3 alkyl, or -O-(C1-C3 alkyl)-; R6 is selected from optionally substituted C4-C8 heterocycle or optionally substituted heteroaryl; m is 0 or 1; n is 0, 1 or 2. The exemplary compounds of formula I(II) are: PNG media_image1.png 160 177 media_image1.png Greyscale , PNG media_image4.png 162 184 media_image4.png Greyscale . Instant claims are further directed to a pharmaceutical composition comprising compounds of formula I(II) and pharmaceutically acceptable carrier. Schönbrunn teaches compounds of genus formula (I) PNG media_image5.png 249 205 media_image5.png Greyscale , where R3a and R3b is hydrogen, L1 is (CH2)n, where n is 0 or 1; R5a, R5b, R5d, and R5e are independently hydrogen, C1-C6 alkoxy, C1-C6 alkyl, hydroxy (page 12, lines 5 – 19); R5c is -L2Q2, where L2 is (CH2)n, n is 0 or 1 and Q2 is heterocyclyl, e.g.: PNG media_image6.png 67 138 media_image6.png Greyscale (page 16, lines 11 – 15); Q1 is PNG media_image7.png 130 128 media_image7.png Greyscale wherein R6a, R6b, R6c, R6d, R6e are independently hydrogen, halogen or (CH2)nSO2R3d, R3d is substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C6-C12 aryl (page 13, lines 9 – 20). The exemplary compounds of Schönbrunn are: PNG media_image8.png 131 153 media_image8.png Greyscale (MA2-014, page 48, Table 1), PNG media_image9.png 126 155 media_image9.png Greyscale (SG3-014, page 56, Table 1), PNG media_image10.png 152 152 media_image10.png Greyscale (SG3-059-01, page 57, Table 1), PNG media_image11.png 127 145 media_image11.png Greyscale (MA4-012-1, page 60, Table 1). Schönbrunn further teaches pharmaceutical compositions that comprise a compound of formula (I) in combination with a pharmaceutically acceptable carrier (page 81, lines 21 - 22). Thus, since Schönbrunn teaches compounds of the same core, as well as all the structural elements in the same positions as instantly claimed compounds, it would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the present invention, to combine teachings of prior art and make various known compounds of similar structure, to arrive at claimed compounds. The one of ordinary skills would be motivated to do so in search of an active pharmaceutical agent possessing similar or improved desired properties with the reasonable expectation of success. Therefore, taking all together, taught by prior art, the invention as a whole is prima facie obvious to one of ordinary skill in the art at the time the invention was made, as evidenced by the references, especially in the absence of evidence to the contrary. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1, 2, 6 and 12 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 2, 7, 8, 10 – 15, 18 and 20 of U.S. Patent No. US 10106507 B2 in view of Schönbrunn et al (WO 2017/066428 A1, cited in IDS, filed 05/30/2023). Instant claims are drawn to a compound of genus formula I PNG media_image2.png 201 198 media_image2.png Greyscale or formula II PNG media_image3.png 189 226 media_image3.png Greyscale , where R1 is selected from C1-C6 alkyl, C3-C6 cycloalkyl, and aryl; R2- is selected from hydrogen and halo; R3 is selected from C1-C6 alkyl and halo; R4 is selected from C1-C6 alkoxy, aryloxy, and C3-C6 cycloalkyoxy; R5 and R7 is C1-C6 alkoxy, C3-C6 cycloalkoxy,C1-C6 alkyl, halo, cyano, and hydroxy; L is selected from a bond, C1-C3 alkyl, or -O-(C1-C3 alkyl)-; R6 is selected from optionally substituted C4-C8 heterocycle or optionally substituted heteroaryl; m is 0 or 1; n is 0, 1 or 2. The exemplary compounds of formula I(II) are: PNG media_image1.png 160 177 media_image1.png Greyscale , PNG media_image4.png 162 184 media_image4.png Greyscale . Instant claims are further directed to a pharmaceutical composition comprising compounds of formula I(II) and pharmaceutically acceptable carrier. Claims of U.S. Patent No. US 10106507 B2 are directed to a compound of formula (IIA) PNG media_image12.png 194 201 media_image12.png Greyscale , where X is nitrogen, R1 is C1-C6 alkyl, such as methyl, or halogen; R2 is hydrogen; R3 is NHSO2R5, where R5 is C1-C6 alkyl, C3-C6 cycloalkyl, n is 1 and wherein R3 is in meta position; C6 is C1-C6 alkyl, such as methyl, R7 is hydrogen, C1-C6 alkoxy, C1-C6 alkyl, halide, cyano, and hydroxy; R8 is -OH or =O and p is 0. Patented claims are also directed to a pharmaceutical composition, comprising compound of formula (IIA) and pharmaceutically acceptable carrier. Although compound of formula (IIA) of U.S. Patent No. US 10106507 B2 have variable R3 in meta position, while instant compounds of formula II (claim 2) have an equivalent variable in para position, Schönbrunn teaches compounds of genus formula (I) PNG media_image5.png 249 205 media_image5.png Greyscale , where R3a and R3b is hydrogen, L1 is (CH2)n, where n is 0 or 1; R5a, R5b, R5d, and R5e are independently hydrogen, C1-C6 alkoxy, C1-C6 alkyl, hydroxy (page 12, lines 5 – 19); R5c is -L2Q2, where L2 is (CH2)n, n is 0 or 1 and Q2 is heterocyclyl, e.g.: PNG media_image6.png 67 138 media_image6.png Greyscale (page 16, lines 11 – 15); Q1 is PNG media_image7.png 130 128 media_image7.png Greyscale where any of R6a, R6b, R6c, R6d, R6e are independently hydrogen, halogen, (CH2)nSO2R3d, R3d is substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C3-C10 cycloalkyl, (page 13, lines 9 – 20). Thus, since Schönbrunn teaches compounds of the same core, as well as all the structural elements in the same positions as instantly claimed compounds, it would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the present invention, to combine teachings of prior art and make various known compounds of similar structure, to arrive at claimed compounds. The one of ordinary skills would be motivated to do so in search of an active pharmaceutical agent possessing similar or improved desired properties with the reasonable expectation of success. Conclusion Claims 1-3, 6, 12, and 18 are rejected. No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ELENA V VISHNYAKOVA whose telephone number is (571)272-3781. The examiner can normally be reached 7:30am - 5pm 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, RENEE CLAYTOR can be reached at (571)272-8394. 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. /E.V.V./ Examiner, Art Unit 1691 /SAVITHA M RAO/ Primary Examiner, Art Unit 1691
Read full office action

Prosecution Timeline

Feb 14, 2023
Application Filed
Feb 06, 2026
Non-Final Rejection — §103, §DP (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
60%
Grant Probability
99%
With Interview (+72.7%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 20 resolved cases by this examiner. Grant probability derived from career allow rate.

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