Prosecution Insights
Last updated: July 17, 2026
Application No. 18/009,954

APPLICATIONS OF HPK1 KINASE INHIBITOR IN PREVENTING AND/OR TREATING ANIMAL PATHOGEN INFECTION

Final Rejection §DOUBLEPATENT§DP
Filed
Dec 12, 2022
Priority
Jun 16, 2020 — CN 202010546816.X +1 more
Examiner
KOSTURKO, GEORGE W
Art Unit
1621
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Zhuhai Yufan Biotechnologies Co. Ltd.
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
392 granted / 717 resolved
-5.3% vs TC avg
Strong +49% interview lift
Without
With
+48.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
46 currently pending
Career history
759
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
57.5%
+17.5% vs TC avg
§102
8.3%
-31.7% vs TC avg
§112
3.3%
-36.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 717 resolved cases

Office Action

§DOUBLEPATENT §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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 02/12/2026 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Response to Amendment Applicant’s amendments, filed 02/04/2026 are acknowledged. Claims 1, 3-4, 12-13 and 16-18 have been canceled in their entirety. In view of Applicant’s amendments to claim 2 and the scope of Formula (I) and the distinct pathogens amended to avian infectious bronchitis virus, porcine transmissible gastroenteritis virus, porcine epidemic diarrhea virus, porcine hemagglutinating encephalomyelitis virus, mouse hepatitis virus, bovine coronavirus, canine coronavirus, feline infectious peritonitis virus, rat coronavirus, rat sialodacryoadenitis coronavirus, and mink epidemic diarrhea coronavirus, the pending Improper Markush rejection and 35 U.S.C 112 paragraph A rejections of record have been withdrawn. Secondly, in view of the cancelation of claims 1 and 12, the 35 U.S.C 103 rejection of record in view of Schmees (WO2018/228923 published 12/20/2018) is withdrawn. Applicant's arguments, filed 02/04/2026 have been fully considered. Rejections and/or objections not reiterated from the previous Office Action are hereby withdrawn. The following rejections and/or objections are either reiterated or newly applied. They constitute the complete set of rejections and objections presently being applied to the instant application. Double Patenting-Rejection Maintained 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 2, 5-11, 14-15, 19-28 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 4-6, 9-10 13-14 and 18-23 of copending Application No. 17801219 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because of the following: Claims 1, 4-6, 9-10 13-14 and 18-23 of copending Application 17801219 are directed to treating viruses in domestic animals, such as avian infectious bronchitis virus, porcine transmissible gastroenteritis virus, porcine epidemic diarrhea virus, porcine hemagglutinating encephalomyelitis virus, mouse hepatitis virus, turkey bluecomb virus, bovine coronavirus, canine coronavirus, feline infectious peritonitis virus, rat coronavirus, rat sialodacryoadenitis coronavirus, and mink epidemic diarrhea coronavirus, comprising administering a therapeutically effective amount of Formula (I) as shown below. PNG media_image1.png 138 324 media_image1.png Greyscale The administered compound reads on Formula (I) of the present claims wherein Ar is 2-piperidinyl-1,3-thiazole, Q is O, and B2 is a substituted acetylene moiety. The methodology of claims 1-19 of copending Application 17801219 lies inside the methodology embraced within instant claims 2, 5-11, 14-15, and 19-28. Applicant traverses. Applicant requests that the double patenting rejections of record be held in abeyance until allowable subject matter is found. Response to Arguments Applicant’s arguments, filed 02/04/2026 are acknowledged and have been carefully considered but they are not persuasive. As shown below, the presented claims are not found allowable. Secondly, Applicant’s statement that a terminal disclaimer will be filed when amended claims are found allowable does not comply with 37 CFR 1.111(b) (which only permits that objections and requirements as to form be held in abeyance): 37 CFR 1.111(b) states that in order to be entitled to reconsideration or further examination, the applicant or patent owner must reply to the Office action. The reply by the applicant or patent owner must be reduced to a writing which distinctly and specifically points out the supposed errors in the examiner’s action and must reply to every ground of objection and rejection in the prior Office action. The reply must present arguments pointing out the specific distinctions believed to render the claims, including any newly presented claims, patentable over any applied references. If the reply is with respect to an application, a request may be made that objections [“objections” does not include rejections] or requirements as to form not necessary to further consideration of the claims be held in abeyance until allowable subject matter is indicated. The applicant’s or patent owner’s reply must appear throughout to be a bona fide attempt to advance the application or the reexamination proceeding to final action. A general allegation that the claims define a patentable invention without specifically pointing out how the language of the claims patentably distinguishes them from the references does not comply with the requirements of this section. In the instant case, the Applicant has failed to distinctly and specifically point out the supposed errors in the examiner’s action and failed to point out the specific distinctions between the pending claims of the instant application and claims 1-19 of copending Application 17801219 that make the instantly claimed patentable. The examiner notes that any future response must address the non-statutory double patenting rejection of record, either by presenting arguments why the rejection is not applicable, or by filing a terminal disclaimer over the patent. A request to hold a (full) rejection in abeyance is not permitted, and will not be considered to be in compliance with 1.111, and will not be held as a bona fide attempt to advance the application to final action. Conclusion In view of the rejections set forth above, no claim is allowed. 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 GEORGE W KOSTURKO whose telephone number is (571)270-5903. The examiner can normally be reached M-F 9:00-5:30. 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, CLINTON A BROOKS can be reached at 571-270-7682. 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. /GEORGE W KOSTURKO/ Primary Examiner, Art Unit 1621
Read full office action

Prosecution Timeline

Dec 12, 2022
Application Filed
Nov 04, 2025
Non-Final Rejection mailed — §DOUBLEPATENT, §DP
Feb 04, 2026
Response Filed
May 14, 2026
Final Rejection mailed — §DOUBLEPATENT, §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
55%
Grant Probability
99%
With Interview (+48.6%)
2y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 717 resolved cases by this examiner. Grant probability derived from career allowance rate.

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