Prosecution Insights
Last updated: October 21, 2026
Application No. 18/283,271

SPIRO-CONTAINING DERIVATIVE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Non-Final OA §101§112
Filed
Sep 21, 2023
Priority
Mar 29, 2021 — CN 202110338429.1 +3 more
Examiner
JACKSON, SHAWQUIA
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Jiangsu Nhwa Pharmaceutical Co. Ltd.
OA Round
2 (Non-Final)
78%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
1436 granted / 1840 resolved
+18.0% vs TC avg
Minimal -3% lift
Without
With
+-3.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
47 currently pending
Career history
1889
Total Applications
across all art units

Statute-Specific Performance

§101
2.6%
-37.4% vs TC avg
§103
15.0%
-25.0% vs TC avg
§102
18.0%
-22.0% vs TC avg
§112
50.6%
+10.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1840 resolved cases

Office Action

§101 §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 Claims 1-20 are currently pending in the instant application. Applicants have amended claims 3-12, 14, 18 and 19 in an amendment filed on September 21, 2023. Claims 3, 8, 9, 13, 19 and 20 are rejected and claims 1, 2, 4-7, 10-12 and 14-18 are objected in this Office Action. I. Priority The instant application is a 371 of PCT/CN2022/083485, filed on March 28, 2022 and claims benefit of Foreign Applications CHINA 202111496634.7, filed on December 9, 2021 and CHINA 202111151734.6, filed on September 29, 2021 and CHINA 202110338429.1, filed on March 29, 2021. II. Information Disclosure Statement The information disclosure statement (IDS) submitted on September 21, 2023 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement has been considered by the examiner. III. Rejections Claim Rejections - 35 USC § 112 The following is a quotation of the second paragraph of 35 U.S.C. 112: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 3, 8, 9, 13, 19 and 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding claims 3, 8, 9, 13 and 19, the phrase "preferably", “further preferably” or “more preferably” renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Applicants are suggested to amend the rejected claims by deleting the terms “preferably”, “further preferably” and “more preferably” and the limitations that follow these terms to overcome the rejection. Claim 20 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 20 recites the broad recitation neurodegenerative disease, and the claim also recites Alzheimer’s disease, Parkinson’s disease, Huntington’s disease which is the narrower statement of the range/limitation. . The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Applicants are suggested to amend claim 20 to delete the narrower diseases that fall under neurodegenerative disease to overcome the rejection. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 19-20 are rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The phrase “Use of the compound…” is written in improper format because a “use” can only be properly claimed as a process or method. It is suggested that applicant amend the claims by rewriting the claims as a process or method, i.e. “a method of treating…” Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 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 19-20 are rejected under 35 U.S.C. 112(a) or 112, first paragraph, while being enabling for a method of treating a neuropsychiatric disease does not reasonably provide enablement for a method of preventing a neuropsychiatric disease. The claim(s) contains subject matter which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. In In re Wands, 8 USPQ2d 1400 (1988), factors to be considered in determining whether a disclosure meets the enablement requirement of 35 U.S.C. § 112, first paragraph, have been described. They are: 1. the nature of the invention, 2. the state of the prior art, 3. the predictability or lack thereof in the art, 4. the amount of direction or guidance present, 5. the presence or absence of working examples, 6. the breadth of the claims, 7. the quantity of experimentation needed, and 8. the level of the skill in the art. The nature of the invention Applicants are claiming a method of treating a neuropsychiatric disease. Support for the intended use is found in in vitro data for TAAR1 receptor cAMP agonist; 5-HT1A receptor cAMP agonist; in vivo data for Inhibition of high spontaneous activity induced by MK-801 in mice and Inhibition of high spontaneous activity induced by PCP in mice on pages 92-100 of the specification. The state of the prior art and the predictability or lack thereof in the art The state of the prior art is that the pharmacological art involves screening in vitro and in vivo to determine which compounds exhibit the desired pharmacological activities (i.e. what compounds can treat which specific disease by what mechanism). There is no absolute predictability even in view of the seemingly high level of skill in the art. The existence of these obstacles establishes that the contemporary knowledge in the art would prevent one of ordinary skill in the art from accepting any therapeutic regimen on its face. The instant claimed invention is highly unpredictable as discussed below: It is noted that the pharmaceutical art is unpredictable, requiring each embodiment to be individually assessed for physiological activity. In re Fisher, 427 F. 2d 833, 166 USPQ 18 (CCPA 1970) indicates that the more unpredictable an area is the more specific enablement is necessary in order to satisfy the statute. In the instant case, the instant claimed invention is highly unpredictable since one skilled in the art would recognize that in regards to therapeutic or prophylactic effects of any condition mediated by activating TAAR1 receptors or 5-HT1A receptors, whether or not the condition is affected by the instant compounds' activity would make a difference. For example, Applicants' claim is drawn to a method of preventing Alzheimer’s disease. It is the state of the art that Alzheimer’s disease is a progressive neurologic disorder that causes the brain to atrophy and brain cells to die. Alzheimer’s disease is the most common cause of dementia. Medications may temporarily improve or slow progression of symptoms. These treatments can sometimes help people with Alzheimer’s disease maximize function and maintain independence for a time. There is no treatment that cures Alzheimer’s disease or alters the disease process in the brain. The exact cause of Alzheimer’s aren’t fully understood. Researchers trying to understand the cause of Alzheimer’s are focused on the role of two proteins: Beta-amyloid and Tau proteins. Alzheimer’s disease is not a preventable condition. Evidence suggests that changes in diet, exercise and habits may lower the risk of developing Alzheimer’s disease (see URL https://www.mayoclinic.org/diseases-conditions/alzheimers-disease/symptoms-causes/syc) Only a total of five drugs developed to improve the symptoms of Alzheimer’s disease have been approved by the FDA. The five drugs function by two different mechanisms> One is cholinesterase inhibition, which delays Alzheimer’s disease by blocking hydrolysis of the critical neurotransmitter acetylcholine. This category of drugs include donepezil (Aricept), rivastigmine (Exelon) and galantamine (Razadyne). The other one is memantine, a non-competitive N-methyl-D-aspartate (NMDA) channel blocker that reduces the activity of the neurotransmitter glutamate, which plays an important role in learning and memory by binding to the NMDA receptor. Namzaric is a combination of donepezil and memantine which reduces the levels of both acetylcholine and glutamate (see Chen, et al. Acta Pharmacologica Sinica 2017:1205-1235). There is no absolute predictability even in view of the seemingly high level of skill in the art. The existence of these obstacles establishes that the contemporary knowledge in the art would prevent one of ordinary skill in the art from accepting any therapeutic regimen on its face. The amount of direction or guidance present and the presence or absence of working examples The only direction or guidance present in the instant specification is minimal. There are no working examples present for preventing any neuropsychiatric disease. Test assays and procedure are provided in the specification such as in vitro data for TAAR1 receptor cAMP agonist; 5-HT1A receptor cAMP agonist; in vivo data for Inhibition of high spontaneous activity induced by MK-801 in mice and Inhibition of high spontaneous activity induced by PCP in mice on pages 92-100. Receptor activity is generally unpredictable and the data provided is insufficient for one of ordinary skill in the art in order to extrapolate to the other compounds of the claims. It is inconceivable as to how the claimed compounds can treat the extremely difficult diseases embraced by the instant claims. Applicants have not provided any competent evidence or disclosed tests that are highly predictive for the pharmaceutical use of the instant compounds. 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.” See In re Fisher, 427 F.2d 833, 839, 166 USPQ 18, 24 (CCPA 1970). The breadth of the claims The breadth of the claims is a method of preventing and/or treating a neuropsychiatric disease. The quantity of experimentation needed and the level of the skill in the art The quantity of experimentation needed is undue experimentation. One of skill in the art would need to determine what diseases would be benefited by the effects of activating TAAR1 receptors and/or 5-HT1A receptors and would furthermore then have to determine which of the claimed compounds in the instant invention would provide treatment or prevention of the diseases. The level of skill in the art is high. However, due to the unpredictability in the pharmaceutical art, it is noted that each embodiment of the invention is required to be individually assessed for physiological activity by in vitro or in vivo screening to determine which compounds exhibit the desired pharmacological activity and which diseases would benefit from this activity. Genentech Inc. v. Novo Nordisk A/S (CA FC) 42 USPQ2d 1001, states that “a patent is not a hunting license. It is not a reward for search, but compensation for its successful conclusion” and “patent protection is granted in return for an enabling disclosure of an invention, not for vague intimations of general ideas that may or may not be workable”. Therefore, in view of the Wands factors and In re Fisher (CCPA 1970) discussed above, to practice the claimed invention herein, a person of skill in the art would have to engage in undue experimentation to test which diseases can be treated by the compound encompassed in the instant claims, with no assurance of success. This rejection can be overcome, for example, by deleting the phrase “prevention and/or” in claim 19. IV. Objections Claim Objections Claims 1-17 are objected to because of the following informalities: Claim 1 contains the phrase “represented by general formula (I)” which should read “represented by formula (I)”. Claims 2-17 contains the phrase “the compound represented by (the) general formula” which should read “the compound represented by formula”. The term “general” should be deleted from all instances that have “general formula”. Appropriate correction is required. Claim 4 is objected to because of the following informalities: Claim 4 contains the limitation “wherein it does not comprise the following compounds” which should read “wherein the compound represented by formula (I) does not include the following compounds”. Appropriate correction is required. ***closest prior art is WO 2021/027304 which teaches compounds such as PNG media_image1.png 158 181 media_image1.png Greyscale but does not teach compounds where the groups substituted on the amine nitrogen can only be selected from hydrogen, deuterium, halogen, hydroxyl, cyano, C16 alkyl, C1-6 deuterated alkyl or C1-6 halolalkyl as seen in the instant compounds. V. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Shawquia Jackson whose telephone number is 571-272-9043. The examiner can normally be reached on 7:00 AM-3:30PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Adam Milligan can be reached on 571-270-7674. 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). /SHAWQUIA JACKSON/ Primary Examiner, Art Unit 1626
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Prosecution Timeline

Sep 21, 2023
Application Filed
Mar 06, 2026
Non-Final Rejection (signed) — §101, §112
May 13, 2026
Non-Final Rejection mailed — §101, §112
Jul 31, 2026
Response Filed
Oct 20, 2026
Non-Final Rejection mailed — §101, §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

2-3
Expected OA Rounds
78%
Grant Probability
75%
With Interview (-3.4%)
2y 3m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1840 resolved cases by this examiner. Grant probability derived from career allowance rate.

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