Prosecution Insights
Last updated: April 19, 2026
Application No. 17/768,660

SELECTIVE LIGANDS FOR TAU AGGREGATES

Final Rejection §102
Filed
Apr 13, 2022
Examiner
CHICKS, ASHLI ARIANA
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Sentonix Inc.
OA Round
2 (Final)
65%
Grant Probability
Favorable
3-4
OA Rounds
3y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allow Rate
49 granted / 75 resolved
+5.3% vs TC avg
Strong +44% interview lift
Without
With
+43.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
37 currently pending
Career history
112
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
29.9%
-10.1% vs TC avg
§102
20.4%
-19.6% vs TC avg
§112
23.6%
-16.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 75 resolved cases

Office Action

§102
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 . Claim Status Claims 28-53 are pending. Claims 43-44 and 47-53 are withdrawn. Claims 28-37, 39-42 and 46 are rejected. Claims 38 and 45 are objected to. Response to Amendment/Arguments Applicant’s amendments have overcome the previously presented rejections. Election/Restrictions As per MPEP 803.02, the examiner will determine whether the entire scope of the claims is patentable. Applicant’s elected species appears free of the art. Therefore, according to MPEP 803.02: should the elected species be found allowable, the examination of the Markus-type claim will be extended. If the examination is extended and a non-elected species found not allowable, the Markush-type claim shall be rejected and claims to the non-elected invention held withdrawn from further consideration. Claims 38 and 45 appear to be free of the art. The examination of the Markush-type claims has been extended to include the scope of claims 38 and 45 as well as the scope of claims 28-37, 39-42 and 46 where the compound is one of the following: PNG media_image1.png 128 376 media_image1.png Greyscale PNG media_image2.png 168 378 media_image2.png Greyscale ; these species of which are anticipated and not allowable under 35 USC § 102. As a non-elected species has been found not allowable, the Markush-type claims have been rejected and the claims to the nonelected invention are held withdrawn from further consideration. Examination has been limited to claims embracing the elected species which are claims 28-42 and 45-46. Claims 28-42 and 45-46 have been examined to the extent that they are readable on the elected embodiment and the above identified nonelected species. Since the nonelected species has not been found allowable, subject matter not embraced by the elected embodiment or the above identified nonelected species is therefore withdrawn from further consideration. Claims 43-44 and 47–53 remain withdrawn from further consideration by the examiner, 37 CFR 1.142(b), as being drawn to a non-elected invention. Claim Rejections - 35 USC § 102 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. (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) 28-32, 34-37, 39-41, and 46 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by WO 2019/234243 A1 by Molette. The prior art discloses the following compound on page 57: PNG media_image1.png 128 376 media_image1.png Greyscale . The prior art compound is embraced by instant formula (I) and reads on claims 28-32, 34-37, 39-41, and 46 where A has formula (IA), W is S, X is N, A1 and A4 are CH, A2 is CR2, R2 is halogen, A3 is N, each of B1-B3 is CH, and Z is PNG media_image3.png 152 208 media_image3.png Greyscale where R1A is OH and R1C is hydrogen. Regarding instant claim 35 which further defines R3, the claim does not require that the compound possess CR3, therefore the prior art compound is anticipatory. Regarding instant claim 46, the prior art discloses a composition comprising the prior art compound and an excipient (page 7). Claims 28-29, 31-37, 39-42, and 46 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by CAS Registry No. 1207531-56-3, which entered Registry on March 1st, 2010. CAS Registry No. 1207531-56-3 is drawn to rel-3-(2-Benzofuranyl)-6-[(2R,5S)-2,5-dimethyl-1-pyrrolidinyl]pyridazine, which has the following structure: PNG media_image2.png 168 378 media_image2.png Greyscale . The compound above is embraced by instant formula (I) and reads on claims 28-29, 31-37, 39-42, and 46 where A has formula (IA), W is O, X is CH, A1-A4 are each CH, B1 and B2 are CH, B3 is N, and Z is PNG media_image4.png 242 210 media_image4.png Greyscale where R1A and R1C are each C1 alkyl. Regarding instant claims 35, 41, and 42 which further define R2 and R3, the claims do not require that the compound possess CR2 or CR3, therefore the prior art compound is anticipatory. Regarding instant claim 46, which is drawn to a pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier, the CAS Registry entry includes predicted properties including mass and molar solubilities at varying pH values. MPEP 2131.02 states: A reference disclosure can anticipate a claim when the reference describes the limitations but "'d[oes] not expressly spell out' the limitations as arranged or combined as in the claim, if a person of skill in the art, reading the reference, would ‘at once envisage’ the claimed arrangement or combination.” Kennametal, Inc. v. Ingersoll Cutting Tool Co., 780 F.3d 1376, 1381, 114 USPQ2d 1250, 1254 (Fed. Cir. 2015) In this situation, a person having ordinary skill in the art in viewing the properties of the Registry entry would envisage a composition with the compound and water, which is a pharmaceutically acceptable carrier. Allowable Subject Matter Claims 38 and 45 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. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 ASHLI A CHICKS whose telephone number is (571)270-0582. The examiner can normally be reached M-Th 7 a.m.- 5 p.m.. 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, James H Alstrum-Acevedo can be reached at (571)272-5548. 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. /A.A.C./Examiner, Art Unit 1626 /KAMAL A SAEED/Primary Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Apr 13, 2022
Application Filed
Mar 01, 2024
Response after Non-Final Action
Aug 21, 2025
Non-Final Rejection — §102
Nov 25, 2025
Response Filed
Jan 21, 2026
Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589107
COMPOSITION CONTAINING NICOTINAMIDE MONONUCLEOTIDE AND MOGROSIDE, AND APPLICATION THEREOF
2y 5m to grant Granted Mar 31, 2026
Patent 12590088
JAK INHIBITOR COMPOUND AND PHARMACEUTICAL COMPOSITION INCLUDING THE SAME
2y 5m to grant Granted Mar 31, 2026
Patent 12564552
ORAL PRODUCT WITH A BASIC AMINE AND AN ION PAIRING AGENT
2y 5m to grant Granted Mar 03, 2026
Patent 12552801
NEW INDAZOLE DERIVATIVES
2y 5m to grant Granted Feb 17, 2026
Patent 12540130
SUBSTITUTED PYRROLIDINE AMIDES IV
2y 5m to grant Granted Feb 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
65%
Grant Probability
99%
With Interview (+43.9%)
3y 3m
Median Time to Grant
Moderate
PTA Risk
Based on 75 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month