Prosecution Insights
Last updated: October 04, 2026
Application No. 18/014,932

PENTACYCLIC TRITERPENOID GLYCOSIDE COMPOUND, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Final Rejection §102§112
Filed
Jan 06, 2023
Priority
Jul 07, 2020 — CN 202010647960.2 +1 more
Examiner
ROZOF, TIMOTHY R
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Shanghai Institute of Materia Medica, Chinese Academy of Sciences
OA Round
2 (Final)
73%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
707 granted / 972 resolved
+12.7% vs TC avg
Strong +24% interview lift
Without
With
+23.6%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
50 currently pending
Career history
998
Total Applications
across all art units

Statute-Specific Performance

§101
2.4%
-37.6% vs TC avg
§103
21.1%
-18.9% vs TC avg
§102
33.2%
-6.8% vs TC avg
§112
25.3%
-14.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 972 resolved cases

Office Action

§102 §112
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 . DETAILED ACTION This is a response to Applicant’s communication filed on August 3, 2026. Application No. 18/014,932, is a 371 of PCT/CN2021/104599, filed July 5, 2021, and claims foreign priority to Chinese application No. CHINA 202010647960.2, filed July 7, 2020. In an amendment filed November 10, 2025, Applicant cancelled claims 2, 3, 8, and 10, and added new claims 11-13. In an amendment filed August 3, 2026, Applicant cancelled claim 7 and added new claims 14-16. Claims 5 is withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected species. Claims 11-13 as well as new claim 16 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention. Claims 1, 4, 6, 9, 14, and 15 are examined below. Please note that upon finding allowable subject matter in the elected invention of Group I, the method of use claims, claim 15 and newly added claim 16, will be rejoined. Both claims 11 and 16 includes the term “or preventing” and will be rejected under 35 USC 112(a), for lack of enablement. It is suggested to cancel the term “or preventing” from claims 11 and 16 to avoid the 112(a), enablement rejection to advance the application to allowance upon finding allowable subject matter in the invention of Group I. Rejection Withdrawn The rejection of claim 6 under 35 U.S.C. 112(b) as failing to set forth the subject matter which the inventor or a joint inventor regards as the invention, is withdrawn in view of Applicant’s August 3, 2026, Amendment & Remarks. Rejection Maintained Claim Rejections - 35 USC § 102(a)(1) 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. The rejection of claims 1, 4, and 9 under 35 U.S.C. 102(a)(1) as being clearly anticipated by Sun et al., CN102339254, is maintained for reasons made of record. Applicant argues that in all the compounds of Sun, the side chains are linked directly to the pentacyclic triterpenoid carbon glycoside without the CH2 unit. Applicant’s argument has been fully considered and is not persuasive. In the Markush formulas IV, V, and VI of claim 1, the Z group is not drawn as separate substituent group attached to the ring via a bond, but rather embedded in the ring. As noted by the Applicant, the definition for Z is defined as a group consisting of carbonyl and CH-X-R6 ( the “CH” of CH-X-R6 is not a “CH2 unit”). As Z is embedded in the ring and not attached via a bond (as are R1-5), the CH represents the carbon of the ring system and X-R6 form the bonded substituents attached at that carbon. Applicant’s attention is drawn to page of 6 of the Specification, Lns. 20-25, formula II, depicted as follows: PNG media_image1.png 229 302 media_image1.png Greyscale As shown in formula II, it is clear that the CH of CH-X-R6, is intended to be a ring carbon (not a “CH2” unit). In this case, the prior art compounds read of the definitions of X-R6 as presently construed. As stated in the February 3, 2026, Non-Final Office action, Sun discloses the following compounds as well as pharmaceutical compositions for treating diabetes and viral diseases: PNG media_image2.png 324 585 media_image2.png Greyscale PNG media_image3.png 239 459 media_image3.png Greyscale PNG media_image4.png 324 476 media_image4.png Greyscale PNG media_image5.png 324 618 media_image5.png Greyscale PNG media_image6.png 324 498 media_image6.png Greyscale PNG media_image7.png 271 634 media_image7.png Greyscale PNG media_image8.png 249 526 media_image8.png Greyscale PNG media_image9.png 271 569 media_image9.png Greyscale PNG media_image10.png 249 460 media_image10.png Greyscale PNG media_image11.png 324 585 media_image11.png Greyscale PNG media_image12.png 324 476 media_image12.png Greyscale PNG media_image13.png 324 618 media_image13.png Greyscale PNG media_image14.png 324 498 media_image14.png Greyscale PNG media_image15.png 271 634 media_image15.png Greyscale PNG media_image16.png 249 526 media_image16.png Greyscale PNG media_image17.png 293 690 media_image17.png Greyscale PNG media_image18.png 325 498 media_image18.png Greyscale PNG media_image19.png 325 585 media_image19.png Greyscale PNG media_image20.png 325 476 media_image20.png Greyscale PNG media_image21.png 325 618 media_image21.png Greyscale PNG media_image22.png 325 509 media_image22.png Greyscale PNG media_image23.png 270 634 media_image23.png Greyscale PNG media_image24.png 249 524 media_image24.png Greyscale PNG media_image25.png 261 569 media_image25.png Greyscale PNG media_image26.png 325 585 media_image26.png Greyscale PNG media_image27.png 325 476 media_image27.png Greyscale PNG media_image28.png 325 618 media_image28.png Greyscale PNG media_image29.png 325 509 media_image29.png Greyscale PNG media_image30.png 270 634 media_image30.png Greyscale PNG media_image31.png 249 524 media_image31.png Greyscale (Sun et al., CN ‘254, citing the CAS Abstract for the compounds depicted above.) These compounds read on compounds of Formula IV of the present invention wherein Formula IV, R1, R2, and R3 are hydrogen or methyl; R4 is hydrogen; R5 is -COO-R7, where R7 is hydrogen or aryl substituted alkyl (i.e. benzyl); and Z is CH-X-R6, where X is -NHC(O)-R8, R8 is substituted or unsubstituted alkyl, or an unsubstituted aryl (i.e., phenyl). Conclusion Claims 1, 4, and 9 are not allowed. Claims 6, 14, and 15 are 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. 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. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to TIMOTHY R ROZOF whose telephone number is (571)270-5992. The examiner can normally be reached on Monday - Friday, 9:00 a.m. -5:00 p.m.. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Andrew Kosar can be reached on (571) 272-0913. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /TIMOTHY R ROZOF/ Primary Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Jan 06, 2023
Application Filed
Feb 03, 2026
Non-Final Rejection mailed — §102, §112
Aug 03, 2026
Response Filed
Sep 17, 2026
Final Rejection mailed — §102, §112 (current)

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Prosecution Projections

3-4
Expected OA Rounds
73%
Grant Probability
96%
With Interview (+23.6%)
2y 0m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 972 resolved cases by this examiner. Grant probability derived from career allowance rate.

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