Prosecution Insights
Last updated: April 19, 2026
Application No. 17/285,389

INHIBITORS OF HIV-1 NEF FOR THE TREATMENT OF HIV DISEASE

Non-Final OA §103
Filed
Apr 14, 2021
Examiner
ROBINSON, MIKHAIL O'DONNEL
Art Unit
1627
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Fox Chase Chemical Development Center Inc.
OA Round
5 (Non-Final)
57%
Grant Probability
Moderate
5-6
OA Rounds
3y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allow Rate
59 granted / 103 resolved
-2.7% vs TC avg
Strong +48% interview lift
Without
With
+47.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
50 currently pending
Career history
153
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
41.6%
+1.6% vs TC avg
§102
20.9%
-19.1% vs TC avg
§112
20.3%
-19.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 103 resolved cases

Office Action

§103
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 . Response to Arguments Applicant's arguments filed 10/30/2025 have been fully considered but they are not persuasive. Applicant argues the amendment of claim 42 to cancel compounds I-301 and I-308, and addition of claim 73 incorporated into claim 64 render the rejections moot over Smithgall et al. (US 20150291534 A1). It is noted Smithgall teaches at the X4 position hydroxyl (claim 73) and at the X3 position (CH2)nR6 wherein R6 is selected from a group that includes heteroaliphatic. For the reasons above the rejections of claims 42, 64 and 68 is maintained. Applicant has canceled claim 73. Claims 1, 15-31, 33-42, 45-72 and 74-75 is now evaluated on its merits. Claim Rejections - 35 USC § 103 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. Claims 42, 64, 68 and are rejected under 35 U.S.C. 103 as being unpatentable over Smithgall et al. (US 20150291534 A1). Regarding claims 42, 64 and 68, Smithgall teaches compounds and a method of inhibiting and treating a biological function of Nef; HIV replication (para. 0020) by administering a compound of Formula 2 PNG media_image1.png 79 108 media_image1.png Greyscale and a pharmaceutically acceptable excipient (para. 0009) post-exposure prophylactically to a subject having HIV (para. 0031). Of Formula 2, X and Y are nitrogen (para. 0013), R1 is a heteroaryl (para. 0009), R2 is hydroxyl (para. 0010), R3 in particular disclosed embodiment is (CH2)nR6 wherein n is 0-2 and R6 is selected from a list which includes a heteroaliphatic (para. 0011). Smithgall teaches R4 in particular disclosed embodiments as a phenyl substituted with one or more substituents selected from a list which includes trifluoromethyl and a halogen (para. 0012) as shown in compounds PNG media_image2.png 173 206 media_image2.png Greyscale and PNG media_image3.png 219 203 media_image3.png Greyscale (para. 0118). Smithgall additionally teaches R1 typically is selected from hydrogen, phenyl, pyridyl, amide, ester, carboxyl, guanidino (or derivatives thereof), thioamide (or derivatives thereof), imidazoline, or combinations thereof. Thus, a combination of a phenyl and imidazoline is of structure PNG media_image4.png 63 74 media_image4.png Greyscale , (relevant to claim 68) which reads to claimed invention of X1 as benzimidazolyl. R4 as taught by Smithgall may also include a heteroaliphatic (para. 0012), which includes N-heterocycloalkyl by the definitions of aliphatic (para. 0074) and heteroaliphatic (para.0086). Therefore, it would have been obvious to someone of ordinary skill in the art at the time of filing to have constructed compounds that reads to the limitations of claim 64 and compound PNG media_image5.png 190 217 media_image5.png Greyscale . One would have been motived to do so from the teachings of Smithgall of PNG media_image2.png 173 206 media_image2.png Greyscale and PNG media_image3.png 219 203 media_image3.png Greyscale in which R1 is a combination phenyl and imidazoline structure PNG media_image4.png 63 74 media_image4.png Greyscale and R3 is a (CH2)heteroaliphatic structure PNG media_image6.png 79 67 media_image6.png Greyscale to form structure PNG media_image5.png 190 217 media_image5.png Greyscale . There is a reasonable expectation of developing compound PNG media_image5.png 190 217 media_image5.png Greyscale from the teachings of Smithgall. Allowable Subject Matter Claims 1, 15-31, 33-41, 45-63, 70-72 and 74-75 are allowed. Closest prior art is of Smithgall et al. (US 20150291534 A1) which differs from claimed invention claims on the embodiments of X1-X3. Claims 65-67 and 69 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 Any inquiry concerning this communication or earlier communications from the examiner should be directed to MIKHAIL O'DONNEL ROBINSON whose telephone number is (571)270-0777. The examiner can normally be reached Monday-Friday 7:30am-5:30pm. 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, Kortney Klinkel can be reached at 571-270-5239. 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. MIKHAIL O'DONNEL. ROBINSON Examiner Art Unit 1627 /MIKHAIL O'DONNEL ROBINSON/Examiner, Art Unit 1627 /SARAH PIHONAK/Primary Examiner, Art Unit 1627
Read full office action

Prosecution Timeline

Apr 14, 2021
Application Filed
Feb 18, 2024
Non-Final Rejection — §103
Jun 25, 2024
Response Filed
Sep 19, 2024
Non-Final Rejection — §103
Jan 20, 2025
Response Filed
Mar 25, 2025
Final Rejection — §103
Jun 02, 2025
Response after Non-Final Action
Jul 30, 2025
Request for Continued Examination
Jul 31, 2025
Response after Non-Final Action
Aug 06, 2025
Non-Final Rejection — §103
Oct 30, 2025
Response Filed
Jan 07, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600729
NEW-TYPE BENZAZEPINE FUSED RING DERIVATIVE
2y 5m to grant Granted Apr 14, 2026
Patent 12595247
SUBSTITUTED PYRAZOLO PIPERIDINE CARBOXYLIC ACIDS
2y 5m to grant Granted Apr 07, 2026
Patent 12590086
3-((1H-PYRAZOL-4-YL)METHYL)-6'-(PHENYL)-2H-(1,2'-BIPYRIDIN)-2-ONE DERIVATIVES AND RELATED COMPOUNDS AS GPR139 ANTAGONISTS FOR USE IN A METHOD OF TREATMENT OF E.G. DEPRESSION
2y 5m to grant Granted Mar 31, 2026
Patent 12583871
PRMT5 INHIBITORS
2y 5m to grant Granted Mar 24, 2026
Patent 12583825
BENZO[H]QUINAZOLIN-4-AMINE AND THIENO[3,2-H]QUINAZOLIN-4-AMINE DERIVATIVES FOR THE TREATMENT OF CANCER
2y 5m to grant Granted Mar 24, 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

5-6
Expected OA Rounds
57%
Grant Probability
99%
With Interview (+47.7%)
3y 6m
Median Time to Grant
High
PTA Risk
Based on 103 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