Prosecution Insights
Last updated: April 19, 2026
Application No. 17/909,171

SUBSTITUTED PYRIDAZINE COMPOUND

Non-Final OA §112
Filed
Sep 02, 2022
Examiner
KENYON, JOHN S
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nico Therapeutics, Inc.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
98%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
737 granted / 921 resolved
+20.0% vs TC avg
Strong +18% interview lift
Without
With
+17.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
40 currently pending
Career history
961
Total Applications
across all art units

Statute-Specific Performance

§101
2.9%
-37.1% vs TC avg
§103
15.2%
-24.8% vs TC avg
§102
23.6%
-16.4% vs TC avg
§112
38.9%
-1.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 921 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 . In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. Election/Restrictions Applicant’s election without traverse in the reply filed on 10 September 2025, is acknowledged. Applicants’ elected compound: PNG media_image1.png 126 346 media_image1.png Greyscale (seen in Example 63 of Specification and last compound of claim 10), which is a species of genus formula I of instant claim 1, wherein: Ar is PNG media_image2.png 102 138 media_image2.png Greyscale ; R6 is -CF3 (which is a halogenoC1-6alkyl); R1 and R2 are both methyl (-CH3); “L” is cyclohexyl (C6 cycloalkylene); and R3 is -OH. Applicants’ elected species is free of the prior art. Examiner extended the Markush search to the full scope of instant claim 1 but did not find any prior art for the full scope of genus formula I of claim 1. Therefore, the Election of Species Requirement of 11 June 2025, is withdrawn, as all claims are free of the prior art. All claims have been examined on the merits. Current Status of 17/909,171 This Office Action is responsive to the amended claims of 2 September 2022. Claims 1-12 and 17-20 have been examined on the merits. Claims 1-12 are original. Claim 17 is currently amended. Claims 18-20 are new. Priority The effective filing date is 26 March 2021. Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statements (IDS) submitted on 10 September 2025; 24 April 2024; and 2 September 2022, are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claim Objections Claim 12 is objected to since it does not begin with the article -- A -- or -- An -- . Independent claims should begin with “A” or “An”. Please revise accordingly. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: 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 1-12 and 17-20 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. Claim 1 variables R1 and R2 define a plurality of embodiments. However, as drafted, the claim is ambiguous (hence rendering the metes and bounds of claim 1 undefined and hence rendering claim 1 indefinite) as to which embodiments following “heteroaryl” are substituents of the heteroaryl versus substituents of R1 and R2. For example, are the cyano and -OR7 and -N(C1-6alkyl)2 substituents of R1’s heteroaryl or are they co-equal alternative embodiments (to heteroaryl) of R1? The same rationale applies to the alternative embodiments appearing after “heteroaryl” of R2. It would be helpful (and help render moot this rejection) if Applicants could use semicolons to separate alternative embodiments of each of R1 and R2 and use commas to separate the embodiments of substituents of the heteroaryl. Claims 2-12 and 17-20 are similarly rejected as indefinite since these claims refer back to claim 1 but do not remedy the rationale underpinning the basis for rejecting claim 1. Conclusion No claims are presently allowable as written. However, the full scope of instant claim 1 genus formula I is free of the prior art. Furthermore, there is no known prior art reference that either teaches or anticipates any compound of genus formula I. The reference “ACS close art reference” (American Chemical Society. Chemical Abstract Service), discloses two exemplary compounds: Compound 1 (CAS RN 1997321-95-5, Entered into STN: 21 Sep 2016): PNG media_image3.png 176 328 media_image3.png Greyscale (see enclosed ACS reference). However, this is not a prior art compound since the carbonyl-methyl at a position corresponding to L-R3 cannot be interpreted as a C1alkylene since a C1alkylene would be a methylene (-CH2-). The instant claim 1 does not permit a carbonyl instead of a C1alkylene. Compound 2 (RN 80071-97-2, entered into STN: 16 Nov 1984): PNG media_image4.png 144 400 media_image4.png Greyscale (see enclosed ACS reference). However, this is not a prior art compound since the disclaimer at the end of instant claim 1 is violated: here, variable Ar is formula (i) and R5 is H and R4 is a halogenoC1alkyl, BUT R1 and R2 are both hydrogen (H). However, the disclaimer requires one of R1 and R2 to be something other than H. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOHN S KENYON whose telephone number is (571)270-1567. The examiner can normally be reached Monday-Friday 10a-6p. 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, Andrew D Kosar can be reached at (571) 272-0913. 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. /JOHN S KENYON/Primary Patent Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Sep 02, 2022
Application Filed
Oct 09, 2025
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

1-2
Expected OA Rounds
80%
Grant Probability
98%
With Interview (+17.8%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 921 resolved cases by this examiner. Grant probability derived from career allow rate.

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