Prosecution Insights
Last updated: April 19, 2026
Application No. 16/456,887

BENZENESULFONAMIDE DERIVATIVES AND METHOD FOR TREATING CANCER

Non-Final OA §DP
Filed
Jun 28, 2019
Examiner
DAVIS, BRIAN J
Art Unit
1614
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Gongwin Biopharm Co., Ltd.
OA Round
19 (Non-Final)
85%
Grant Probability
Favorable
19-20
OA Rounds
1y 11m
To Grant
80%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
1317 granted / 1549 resolved
+25.0% vs TC avg
Minimal -5% lift
Without
With
+-4.8%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
47 currently pending
Career history
1596
Total Applications
across all art units

Statute-Specific Performance

§101
4.0%
-36.0% vs TC avg
§103
16.0%
-24.0% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
43.6%
+3.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1549 resolved cases

Office Action

§DP
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 2/6/2026 has been entered. Election/Restriction The examiner notes for clarity of the record that inventor has added new claims 16-21. The subject matter of these new claims is encompassed by the original election/restriction requirement (an election of species across the entire claim set). 102 Rejections Withdrawn The rejection of claim 3 under 35 USC 102(a)(1), outlined in the previous Office Action, has been overcome by inventor’s amendment. The amendment narrows the claim scope (to a pharmaceutical composition) such that it no longer reads on the cited art. Claim Objections Withdrawn The objection to claims 4-14, outlined in the previous Office Action is withdrawn. (With respect to claims 5-8, the amendment cancels the claims.) Markush Search Inventor having overcome the outstanding art rejection, the search was expanded as called for under Markush examination practice, a compound-by-compound search. This resulted in all remaining species being searched. 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 4, 12 and 13 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 9 and 16 of U.S. Patent No. 11,752,118 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzenesulfonamide derivative selected from the 4 diagramed benzenesulfonamide derivatives of pharmaceutical composition claim 3 (claim 4). Claim 12 (from claim 4) teaches that the composition is administered intratumorally, intravenously, subcutaneously, etc. Claim 13 (from claim 4) teaches that the cancer is inter alia skin cancer. US 11,752,118 B2 teaches a method of treating melanoma comprising administering a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes the 4 diagramed compounds of instant claim 3 (column 23, line 65 (i.e. the last diagramed compound); column 25, lines 20, 40 and 45 (i.e. the 4th, 7th and last diagramed compounds)) (claim 9). The explicitly diagramed list of compounds is a subset of a larger Markush set of compounds which are administered intratumorally, intravenously, subcutaneously, etc. (claim 16). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (cancer) than the narrower teaching of the patented claims (melanoma). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Claim 17 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 9 of U.S. Patent No. 11,752,118 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzensulfonamide derivative selected from the Markush group of compounds of Formula (I) of compound claim 16. US 11,752,118 B2 teaches a method of treating melanoma comprising administering a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes a compound encompassed by the Markush group of Formula (I) of instant claim 16 (column 25, line 20 (i.e. the 4th diagramed compound)). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (cancer; Markush group of Formula (I)) than the narrower teaching of the patented claim (melanoma; a diagramed member of the Markush group of instant formula (I)). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Claim 18 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 9 of U.S. Patent No. 11,752,118 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzensulfonamide derivative selected from the Markush group of compounds of Formula (I) of compound claim 15. US 11,752,118 B2 teaches a method of treating melanoma comprising administering a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes compounds encompassed by the Markush group of Formula (I) of instant claim 15 (column 23, line 65 (i.e. the last diagramed compound); column 25, lines 20 and 40 (i.e. 4th and 7th diagramed compounds). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (cancer; Markush group of Formula (I)) than the narrower teaching of the patented claim (melanoma; diagramed members of the Markush group of instant formula (I)). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Claims 4 and 12-14 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 4, 5 and 19 of U.S. Patent No. 12,409,158 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzensulfonamide derivative selected from the 4 diagramed benzenesulfonamide derivatives of pharmaceutical composition claim 3 (claim 4). Claim 12 (from claim 4) teaches that the composition is administered intratumorally, intravenously, subcutaneously, etc. Claim 13 (from claim 4) teaches that the cancer is inter alia lung cancer and skin cancer. Claim 14 (from claim 13) teaches the cancer is liver cancer or lung cancer. US 12,409,158 B2 teaches a method of treating cancer comprising administering a chemotherapy agent and a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes the 4 diagramed compounds of instant claim 3 (column 31, line 50 (i.e. the 9th diagramed compound); column 33, lines 10, 25 and 30 (i.e. the 2nd, 5th and last diagramed compounds)) (claim 4). The explicitly diagramed list of compounds is a subset of a larger Markush set of compounds which are administered intratumorally, intravenously, subcutaneously, etc. (claim 19), and where the cancer is melanoma or lung cancer (claim 5). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (comprising the diagramed benzenesulfonamide derivatives) than the narrower teaching of the patented claims (comprising the diagramed benzensulfonamide derivatives and a chemotherapy agent). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Claim 17 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 4 of U.S. Patent No. 12,409,158 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzensulfonamide derivative selected from the Markush group of compounds of Formula (I) of compound claim 16. US 12,409,158 B2 teaches a method of treating cancer comprising administering a chemotherapy agent and a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes a compound encompassed by the Markush group of Formula (I) of instant claim 16 (column 33, line 10 (i.e. the 2nd diagramed compound)). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (comprising Markush group of Formula (I)) than the narrower teaching of the patented claim (comprising a diagramed member of the Markush group of instant formula (I) and a chemotherapy agent). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Claim 18 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 4 of U.S. Patent No. 12,409,158 B2. Although the claims at issue are not identical, they are not patentably distinct from each other. Inventor teaches a method of treating cancer comprising administering a pharmaceutical composition of a benzensulfonamide derivative selected from the Markush group of compounds of Formula (I) of compound claim 15. US 12,409,158 B2 teaches a method of treating cancer comprising administering a chemotherapy agent and a pharmaceutical composition of a benzensulfonamide derivative chosen from a list of diagramed compounds which explicitly includes compounds encompassed by the Markush group of Formula (I) of instant claim 15 (column 31, line 50 (i.e. the 9th diagramed compound); column 33, lines 10 and 25 (i.e. the 2nd and 5th diagramed compounds). As can be seen from the outlines above, the subject matter of the claim sets are related, essentially, in a genus/species fashion. That is, the instant claim set is a broader teaching (comprising a Markush group of Formula (I)) than the narrower teaching of the patented claim (comprising diagramed members of the Markush group of instant formula (I) and a chemotherapy agent). Note, however, that if a generic claim is presented in a separate application after the issuance of a patent claiming one or more species within the scope of the generic claim, the generic claim may be rejected on the grounds of nonstatutory double patenting. (MPEP 806.04(i).) Allowable Subject Matter Claims 3, 9-11, 15, 16 and 19-21 are allowed. The following is a statement of reasons for the indication of allowable subject matter: The key to the instant invention are the diagramed compounds of independent composition claim 3, and the Markush groups of independent composition claim 15 and independent compound claim 16. The closest prior art is the prior art of record. During the course of prosecution, inventor has narrowed the scope of the claimed subject matter such that it no longer reads on the cited art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN J DAVIS whose telephone number is (571)272-0638. The examiner can normally be reached M-F 8:30-5:00 PM EST. 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, Ali Soroush, can be reached at 571-272-9925. 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. /BRIAN J DAVIS/Primary Examiner, Art Unit 1614 2/11/2026
Read full office action

Prosecution Timeline

Jun 28, 2019
Application Filed
Nov 26, 2019
Non-Final Rejection — §DP
Mar 02, 2020
Response Filed
Apr 04, 2020
Final Rejection — §DP
Jul 08, 2020
Request for Continued Examination
Jul 14, 2020
Response after Non-Final Action
Aug 02, 2020
Non-Final Rejection — §DP
Nov 06, 2020
Response Filed
Nov 15, 2020
Final Rejection — §DP
Feb 16, 2021
Response after Non-Final Action
Mar 18, 2021
Request for Continued Examination
Mar 19, 2021
Response after Non-Final Action
Mar 22, 2021
Non-Final Rejection — §DP
Jun 24, 2021
Response Filed
Aug 05, 2021
Final Rejection — §DP
Nov 08, 2021
Request for Continued Examination
Nov 10, 2021
Response after Non-Final Action
Nov 14, 2021
Non-Final Rejection — §DP
Feb 17, 2022
Response Filed
Feb 24, 2022
Final Rejection — §DP
Jun 01, 2022
Response after Non-Final Action
Jun 03, 2022
Response after Non-Final Action
Aug 01, 2022
Request for Continued Examination
Aug 03, 2022
Response after Non-Final Action
Aug 13, 2022
Non-Final Rejection — §DP
Nov 16, 2022
Response Filed
Dec 31, 2022
Final Rejection — §DP
Apr 03, 2023
Request for Continued Examination
Apr 04, 2023
Response after Non-Final Action
May 19, 2023
Non-Final Rejection — §DP
Aug 25, 2023
Response Filed
Nov 08, 2023
Final Rejection — §DP
Feb 15, 2024
Request for Continued Examination
Feb 24, 2024
Response after Non-Final Action
Feb 26, 2024
Non-Final Rejection — §DP
May 28, 2024
Response Filed
Aug 21, 2024
Final Rejection — §DP
Nov 25, 2024
Request for Continued Examination
Nov 29, 2024
Response after Non-Final Action
Dec 04, 2024
Non-Final Rejection — §DP
Mar 10, 2025
Response Filed
Mar 31, 2025
Final Rejection — §DP
Jun 30, 2025
Request for Continued Examination
Jul 03, 2025
Response after Non-Final Action
Jul 11, 2025
Non-Final Rejection — §DP
Oct 15, 2025
Response Filed
Oct 26, 2025
Final Rejection — §DP
Jan 28, 2026
Response after Non-Final Action
Feb 06, 2026
Request for Continued Examination
Feb 09, 2026
Response after Non-Final Action
Feb 11, 2026
Non-Final Rejection — §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

19-20
Expected OA Rounds
85%
Grant Probability
80%
With Interview (-4.8%)
1y 11m
Median Time to Grant
High
PTA Risk
Based on 1549 resolved cases by this examiner. Grant probability derived from career allow rate.

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