Prosecution Insights
Last updated: September 17, 2026
Application No. 18/288,793

COMPOUNDS AND THEIR USES AS CD38 INHIBITORS

Non-Final OA §112
Filed
Oct 27, 2023
Priority
Apr 30, 2021 — CN PCT/CN2021/091613 +2 more
Examiner
LEE, ANDREW P
Art Unit
1691
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nanjing Immunophage Biotech Co. Ltd.
OA Round
1 (Non-Final)
48%
Grant Probability
Moderate
1-2
OA Rounds
5m
Est. Remaining
71%
With Interview

Examiner Intelligence

Grants 48% of resolved cases
48%
Career Allowance Rate
287 granted / 593 resolved
-11.6% vs TC avg
Strong +23% interview lift
Without
With
+22.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
33 currently pending
Career history
645
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
57.1%
+17.1% vs TC avg
§102
7.7%
-32.3% vs TC avg
§112
21.1%
-18.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 593 resolved cases

Office Action

§112
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 . Status of the Application Claims 17-18 and 23-41 are pending Claims 17-18 and 23-41 are under consideration in the instant office action. Information Disclosure Statement The information disclosure statements (IDS) submitted on 07/31/2024 and 07/14/2025 comply with the provisions of 37 CFR 1.97, 1.98 and MPEP § 609. Accordingly, it has been placed in the application file and the information therein has been considered as to the merits. See attached copy of the PTO-1449. Priority This application claims benefit of PCT Application No. PCT/CN2022/089735 filed on 04/28/2022, PCT Application No. PCT/CN2021/115754 filed on 08/31/2021, and PCT Application No. PCT/CN2021/091613 filed on 04/30/2021. Election/Restrictions Applicant’s election without traverse of Compound 188 and Alzheimer’s Disease in the reply filed on 05/11/2026 is acknowledged. Since compounds of formula I appear free of the prior art, the species elections are withdrawn. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 17-18 and 23-41 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for the inhibition of CD38 by administering Compounds 1-195, does not reasonably provide enablement for the treatment of any disease mediated by CD38 comprising administering any compound of formula I. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to use the invention commensurate in scope with these claims. The factors to be considered in determining whether a disclosure meets the enablement requirements of 35 U.S.C. 112, first paragraph, have been described in In re Wands, 858 F.2d 731, 8 USPQ2d 1400 (Fed. Cir., 1988). The court in Wands states, "Enablement is not precluded by the necessity for some experimentation, such as routine screening. However, experimentation needed to practice the invention must not be undue experimentation. The key word is 'undue', not 'experimentation'" (Wands, 8 USPQ2sd 1404). Clearly, enablement of a claimed invention cannot be predicated on the basis of quantity of experimentation required to make or use the invention. "Whether undue experimentation is needed is not a single, simple factual determination, but rather is a conclusion reached by weighing many factual considerations" (Wands, 8 USPQ2d 1404). Among these factors are: (i) the nature of the invention; (2) the breadth of the claims; (3) the state of the prior art; (4) the predictability or unpredictability of the art; (5) the relative skill of those in the art; (6) the amount of direction or guidance presented; (7) the presence or absence of working examples; and (8) the quantity of experimentation necessary. While all of these factors are considered, a sufficient amount for a prima facie case is discussed below. (1) The nature of the invention and (2) the breadth of the claims: The claims are drawn to a method of treating any disease or disorder using a compound of formula I. The breadth of the claims thus covers that the compounds are capable of therapy of potentially any and every known condition or disease associated with CD38. For example, the breadth of the claims covers a variety of cancers, including glioblastoma and lung cancer. Such a wide range of conditions and diseases have completely different etiologies. (3) The state of the prior art and (4) the predictability or unpredictability of the art: The state of the art as shown by Danziger et al that many aspects and modalities are involved in the pharmaceutical art, which as a result makes that art highly unpredictable. Pharmacological activity in general is a very unpredictable area. Note that in cases, involving physiological activity such as the instant case, "the scope of enablement obviously varies inversely with the degree of unpredictability of the factors involved". Se In re Fisher, 427 F.2d 833,166 USPQ 18, 24 (CCPA 1970). The article while directed to automated drug design, specifically addresses the issue of steric hindrance which essentially means that the shape, design, including the kinds and amount of substituents greatly affect the ability and efficacy of a drug to bind to the desired receptor and function appropriately. Thus, the use of the three recited compounds, which contain different amino groups as substituents, would be unpredictable in treating any and every known condition or disease. Within the scope of cancers, which does not cover the full breadth of the claimed invention, Simone (Introduction: Oncology) teaches that for all cancers, "each specific type has unique biologic and clinical features that must be appreciated for proper diagnosis, treatment and study” (pg. 1004). Furthermore, different types of cancers affect different organs and have different methods of growth and harm to the body. Thus, it is beyond the skill of oncologists today to get an agent to be effective against a wide range of cancers. (5) The relative skill of those in the art: Those of relative skill in the art are those with a level of skill of the authors of the references cites to support the examiner’s position (MD’s or those with advanced degrees and the requisite experience in medicine). (6) The amount of direction or guidance presented and (7) the presence of absence of working examples: The specification provides working examples only for the inhibition of CD38 for Compounds 1-195. Thus, the specification has only provided working examples for in vitro activity for Compounds 1-195, but not for the treatment of any disease or disorder associated with CD38, particularly other cancers by administering any compound of formula I. (8) The quantity of experimentation necessary: Considering the state of the art as discussed by Danziger and Simone above, and the high unpredictability in the art as evidenced therein, and the lack of guidance provided by the specification, one of ordinary skill in the art would be burdened with undue experimentation to practice the invention commensurate in the scope of the claims. Conclusion Claims 17-18 and 23-41 are rejected. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDREW P LEE whose telephone number is (571)270-1016. The examiner can normally be reached Monday-Friday 9am-5pm. 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, Renee Claytor can be reached at (571)272-8394. 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. /ANDREW P LEE/Examiner, Art Unit 1691 /RENEE CLAYTOR/Supervisory Patent Examiner, Art Unit 1691
Read full office action

Prosecution Timeline

Oct 27, 2023
Application Filed
Sep 08, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12721857
BORATE COMPLEXES OF CHLOROGENIC ACID AND USES THEREOF
2y 4m to grant Granted Sep 01, 2026
Patent 12692231
TRYPTAMINE DERIVATIVES
1y 9m to grant Granted Jul 28, 2026
Patent 12685731
ORGANIC COMPOUNDS
5y 10m to grant Granted Jul 21, 2026
Patent 12655142
4-(IMIDAZO[1,2-A]PYRIDIN-3-YL)-PYRIMIDINE DERIVATIVES
4y 4m to grant Granted Jun 16, 2026
Patent 12642856
DEGRADERS OF HEPATITIS C VIRUS NS3/4A PROTEIN
5y 2m to grant Granted Jun 02, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
48%
Grant Probability
71%
With Interview (+22.9%)
3y 3m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 593 resolved cases by this examiner. Grant probability derived from career allowance 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