Prosecution Insights
Last updated: August 18, 2026
Application No. 18/251,827

PHARMACEUTICAL COMPOSITION FOR TREATING LEUKEMIA COMPRISING FLT3 INHIBITOR

Final Rejection §102§103§DP
Filed
Dec 12, 2023
Priority
Nov 05, 2020 — RE 10-2020-0147156 +1 more
Examiner
WEDDINGTON, KEVIN E
Art Unit
1629
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Hanmi Pharm. Co., Ltd.
OA Round
2 (Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
1103 granted / 1467 resolved
+15.2% vs TC avg
Moderate +10% lift
Without
With
+10.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
51 currently pending
Career history
1493
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
28.3%
-11.7% vs TC avg
§102
17.0%
-23.0% vs TC avg
§112
28.5%
-11.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1467 resolved cases

Office Action

§102 §103 §DP
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 . Claims 4-9, 12-14 and 16-19 are presented for examination. Applicants’ information disclosure statement filed June 5, 2026 has been received and entered. Applicants’ amendment and response filed June 8, 2026 have been received and entered. Accordingly, the rejection made under non-statutory double patenting as being unpatentable over claims 5-8 of U.S. Patent No. 12,325,698 B2 as set forth in the previous Office action dated March 10, 2026 at pages 2-4 as applied to claims 4-16 is hereby WITHDRAWN due to applicants’ remarks. 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 4-9, 12-14 and 16 are again provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 9-18 of copending Application No. 19/203,828 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because of record, for reason of record as set forth in the previous Office action dated March 10, 2026 at pages 4-7 as applied to claims 4-16 is hereby MAINTAINED. Applicants respectfully defer addressing the present rejection until there is allowable subject matter in the reference application or present application. Claims 4-9, 12-14 and 16 are not allowed. The rejection made under provisional nonstatutory double patenting rejection is adhered to. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 4-9, 12-14 and 16 are again rejected under 35 U.S.C. 102(a)(2) as being anticipated by WO 2020/022600 A1, hereby known as Bae et al. The applied reference has a common joint inventors with the instant application. Based upon the earlier effectively filed date of the reference, it constitutes prior art under 35 U.S.C. 102(a)(2). This rejection under 35 U.S.C. 102(a)(2) might be overcome by: (1) a showing under 37 CFR 1.130(a) that the subject matter disclosed in the reference was obtained directly or indirectly from the inventor or a joint inventor of this application and is thus not prior art in accordance with 35 U.S.C. 102(b)(2)(A); (2) a showing under 37 CFR 1.130(b) of a prior public disclosure under 35 U.S.C. 102(b)(2)(B) if the same invention is not being claimed; or (3) a statement pursuant to 35 U.S.C. 102(b)(2)(C) establishing that, not later than the effective filing date of the claimed invention, the subject matter disclosed in the reference and the claimed invention were either owned by the same person or subject to an obligation of assignment to the same person or subject to a joint research agreement. Applicants’ remarks regarding the Bae et al. reference does not anticipate the instant claims for treating cancer in patients having cancer comprising the specific dual FLT3 mutants (ITD mutation and D835 point mutation) and FLT3 point mutations (specific D835 point mutations D835F, D8351, D835H, and D835A) and compounds of Formula 1 recited in the present claims (see compound of claim 4 (see page 38, Example 10) and instant compound of claim 5, (see page 37, Example 8) . However, the Bae et al. reference does teach a specific subpopulation of patients having cancer comprising the same specific dual FLT3 mutants (ITD mutation and D835 point mutation) and FLT3 point mutations (specific D835 point mutations D835F, D8351, D835H, and D835A); therefore, the specific subpopulation of patients having the same cancer is anticipated and encompassed by the broad present application’ method. The rejection made under 35 USC 102(a)(2) is hereby MAINTAINED. Claims 4-9, 12-14 and 16 are not allowed. 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. Claim(s) 4-9, 12-14 and 16-19 are again rejected under 35 U.S.C. 103 as being unpatentable over WO 2020/022600 A1, hereby known as Bae et al. in view of Liu et al., Journal of Hematology & Oncology, Vol. 10, No. 145, pages 1-7 (2017), because of record, for reason of record as set forth in the previous Office action dated March 10, 2026 at pages 8-10 as applied to claims 4-19 is hereby MAINTAINED. Applicants’ remarks regarding the Bae et al. reference does not disclose the applicants’ instant compounds are not persuasive since the Bae et al. disclose applicants’ instant compound of claim 4 (see page 38, Example 10) and instant compound of claim 5, (see page 37, Example 8). Also note the Bae et al. reference does teach the compounds various abnormal overexpression and mutations of FLT3 such as D835V, D835Y and ITD that are found in patients with leukemia. Note applicants does not disclose any unexpected results for the combination of the instant compounds and the secondary active agent, an SYK inhibitor. Note Gilteritinib is not classified as a SYK inhibitor. Claims 4-9, 12-14 and 16-19 are not allowed. The rejection made under 35 USC 103 is adhered to. Conclusion 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 E WEDDINGTON whose telephone number is (571)272-0587. The examiner can normally be reached M-F 1:30-10:00. 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, Jeff 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 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. KEVIN E. WEDDINGTON Primary Examiner Art Unit 1629 /KEVIN E WEDDINGTON/Primary Examiner, Art Unit 1629
Read full office action

Prosecution Timeline

Dec 12, 2023
Application Filed
Feb 06, 2025
Response after Non-Final Action
Mar 10, 2026
Non-Final Rejection mailed — §102, §103, §DP
Jun 08, 2026
Response Filed
Jul 14, 2026
Final Rejection mailed — §102, §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

3-4
Expected OA Rounds
75%
Grant Probability
85%
With Interview (+10.1%)
2y 5m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1467 resolved cases by this examiner. Grant probability derived from career allowance rate.

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