Prosecution Insights
Last updated: April 19, 2026
Application No. 18/001,317

4-ETHYNYLPYRIDINE DERIVATIVES USEFUL AS GCN2 INHIBITORS

Non-Final OA §112
Filed
Dec 09, 2022
Examiner
LEE, ANDREW P
Art Unit
1691
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Ip2Ipo Innovations Limited
OA Round
3 (Non-Final)
48%
Grant Probability
Moderate
3-4
OA Rounds
3y 5m
To Grant
72%
With Interview

Examiner Intelligence

Grants 48% of resolved cases
48%
Career Allow Rate
282 granted / 581 resolved
-11.5% vs TC avg
Strong +24% interview lift
Without
With
+23.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
50 currently pending
Career history
631
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
55.6%
+15.6% vs TC avg
§102
9.0%
-31.0% vs TC avg
§112
19.0%
-21.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 581 resolved cases

Office Action

§112
Ours 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 12/01/2025 has been entered. Status of the Application Claims 1-19, 21-22, and 26-41 are pending. Receipt and consideration of Applicants' amended claim set and remarks/arguments filed on 12/01/2025 are acknowledged. Claims 1-5, 16, and 21 are amended, and claims 39-41 have been added. Claims under consideration in the instant office action are claims 1-19, 21-22, and 26-41. Applicants' arguments, filed 12/01/2025, have been fully considered and they are deemed to be persuasive regarding the rejection of claims 1-11, 13, 15-19, 21-22, 26-31, and 33-38 under 35 U.S.C. 103. Rejections and/or objections not reiterated from previous office actions are hereby withdrawn. The following rejections and/or objections are either reiterated or newly applied. They constitute the complete set presently being applied to the instant application. 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 21-22, 26-34, and 40-41 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 GCN2 comprising administering Examples 1 and 3, does not reasonably provide enablement for the treatment or prophylaxis of any disease or disorder comprising administering a 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 treatment or prophylaxis of any disease or disorder comprising administering a compound of formula (I). The breadth of the claims thus covers that any compound of formula (I) is capable of therapy of any and every condition or disease associated with GCN2 inhibition. For example, the breadth of the claims covers a number of cancers, which 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 GCN2 by Examples 1 and 3 in vitro. Thus, the specification has only provided working examples with two embodied compounds, but not for the treatment of any disease or disorder associated with GCN2 inhibition, particularly cancers. (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 21-22, 26-34, and 40-41 are rejected. Claims 1-19 and 35-39 are allowed. 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 /SAVITHA M RAO/Primary Examiner, Art Unit 1691
Read full office action

Prosecution Timeline

Dec 09, 2022
Application Filed
Jan 08, 2025
Non-Final Rejection — §112
Apr 15, 2025
Response Filed
Aug 31, 2025
Final Rejection — §112
Nov 04, 2025
Response after Non-Final Action
Dec 01, 2025
Request for Continued Examination
Dec 04, 2025
Response after Non-Final Action
Jan 09, 2026
Non-Final Rejection — §112 (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
48%
Grant Probability
72%
With Interview (+23.9%)
3y 5m
Median Time to Grant
High
PTA Risk
Based on 581 resolved cases by this examiner. Grant probability derived from career allow rate.

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