Prosecution Insights
Last updated: April 19, 2026
Application No. 18/455,767

PYRAZOLYLSULFONAMIDE COMPOUNDS AND THEIR USE IN THERAPY

Non-Final OA §112
Filed
Aug 25, 2023
Examiner
PIHONAK, SARAH
Art Unit
1627
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Hotspot Therapeutics Inc.
OA Round
1 (Non-Final)
61%
Grant Probability
Moderate
1-2
OA Rounds
2y 11m
To Grant
99%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
900 granted / 1477 resolved
+0.9% vs TC avg
Strong +44% interview lift
Without
With
+43.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
47 currently pending
Career history
1524
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
39.9%
-0.1% vs TC avg
§102
11.0%
-29.0% vs TC avg
§112
20.5%
-19.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1477 resolved cases

Office Action

§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 . Priority This application, filed 08/25/2023 Claims Priority from Provisional Application 63401490, filed 08/26/2022. Status of Claims Claims 1-2, 7-9, 12, 19-23, 25, 28-29, 35-37, 44-48, 66-68, 72-78, and 80-93 are pending as of the response filed on 2/23/26. Claims 3-6, 10-11, 13-18, 24, 26-27, 30-34, 38-43, 49-65, 69-71, and 79 have been canceled. Applicant’s election without traverse of the species, compound I-469 in the reply filed on 2/23/26 is acknowledged: PNG media_image1.png 200 400 media_image1.png Greyscale . The elected species has been found to be free of the prior art. Therefore, search and examination have been extended to the full scope of species of formula I. Claims 1-2, 7-9, 12, 19-23, 25, 28-29, 35-37, 44-48, 66-68, 72-78, and 80-93 were examined. Claims 2, 66, and 74-76 are rejected. Claims 1, 7-9, 12, 19-23, 25, 28-29, 35-37, 44-48, 67-68, 72-73, 77-78, and 80-93 are allowed. Claim Rejections-35 USC § 112 The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claim 2 is rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 2 depends from claim 1 and recites the compound as a compound of Formula I, however, this limitation is already required by claim 1. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. 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 66 and 74-76 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 66 refers to a compound in Table 1 or 2, however, the chemical structures or names of compounds in these tables are not present in the claim. The claim is indefinite, as the metes and bounds aren’t clear, since it is uncertain what compounds are encompassed by the claim. See MPEP 2173.05(s): Where possible, claims are to be complete in themselves. Incorporation by reference to a specific figure or table "is permitted only in exceptional circumstances where there is no practical way to define the invention in words and where it is more concise to incorporate by reference than duplicating a drawing or table into the claim. Incorporation by reference is a necessity doctrine, not for applicant’s convenience." Ex parte Fressola, 27 USPQ2d 1608, 1609 (Bd. Pat. App. & Inter. 1993) (citations omitted). Claims 74-76 depend on claim 68 and recite “wherein the cancer…”. However, claim 68 doesn’t explicitly recite cancer as the condition to be treated. There is insufficient antecedent basis for this limitation in the claims. Reasons for Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: the compounds of Formula I are novel and non-obvious over the prior art. PubChem, CID 126771985, publ. 4/25/2017; and Ukrorgsyntez Ltd., RN 1953269-78-7, publ. in CAS 7/17/2016 represent the most relevant prior art. PubChem discloses the following compound: PNG media_image2.png 200 400 media_image2.png Greyscale . This compound is structurally very similar to compounds of Formula I, having A1=morpholine; A2=pyrazolylene; R2=hydrogen; A3= PNG media_image3.png 200 400 media_image3.png Greyscale . The only difference between the disclosed compound and compounds of Formula I is that the position corresponding to R5 for the above shown compound is n-propyl, which is prohibited for R5 of Formula I. Moreover, PubChem doesn’t disclose any biological activity or potential medicinal utility for the above shown compound, thus there is no reasoning for modifying the above shown compound to arrive at a compound of Formula I. Ukrorgsyntez Ltd. discloses the following compound: PNG media_image4.png 200 400 media_image4.png Greyscale . This compound is structurally very similar to compounds of Formula I, having A1=tetrahydrofuran; A2=pyrazolylene; R2=hydrogen; and A3= PNG media_image5.png 200 400 media_image5.png Greyscale . The only difference between the disclosed compound and compounds of Formula I is that the position corresponding to R5 for the above shown compound is isopropyl, which is prohibited for R5 of Formula I. Moreover, Ukrorgsyntez Ltd doesn’t disclose any biological activity or potential medicinal utility for the above shown compound thus there is no reasoning for modifying the above shown compound to arrive at a compound of Formula I. Information Disclosure Statements The IDS filed on 11/8/24 has been considered. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to SARAH PIHONAK whose telephone number is (571)270-7710. The examiner can normally be reached Monday-Friday 9:00-5:30 EST. 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. SARAH . PIHONAK Primary Examiner Art Unit 1627 /SARAH PIHONAK/Primary Examiner, Art Unit 1627
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Prosecution Timeline

Aug 25, 2023
Application Filed
Mar 11, 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

1-2
Expected OA Rounds
61%
Grant Probability
99%
With Interview (+43.7%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 1477 resolved cases by this examiner. Grant probability derived from career allow rate.

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