Prosecution Insights
Last updated: October 01, 2026
Application No. 18/717,144

COMPOUNDS AND COMPOSITIONS THAT INHIBIT PIKFYVE

Non-Final OA §102§112
Filed
Jun 06, 2024
Priority
Dec 08, 2021 — provisional 63/287,177 +1 more
Examiner
WILLIS, DOUGLAS M
Art Unit
Tech Center
Assignee
Kineta Inc.
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
1494 granted / 1814 resolved
+22.4% vs TC avg
Strong +20% interview lift
Without
With
+19.7%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 10m
Avg Prosecution
67 currently pending
Career history
1843
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
8.8%
-31.2% vs TC avg
§102
17.6%
-22.4% vs TC avg
§112
52.7%
+12.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1814 resolved cases

Office Action

§102 §112
DETAILED ACTION Notice of Pre-AIA or AIA Status The inventor or joint inventor should note that the instant invention, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Status of the Claims Claims 1-4, 6, 32, 50, 75, 79, 85, 89, 93, 98-101, 103, 104, 106 and 110 are pending in the instant invention. According to the Amendments to the Claims, filed July 16, 2026, claims 5, 7-31, 33-49, 51-74, 76-78, 80-84, 86-88, 90-92, 94-97, 102, 105 and 107-109 were cancelled. Status of Priority This invention is a 35 U.S.C. § 371 National Stage Filing of International Application No. PCT/US2022/052130, filed December 7, 2022, which claims priority under 35 U.S.C. § 119(e) to US Provisional Application No. 63/287,177, filed December 8, 2021. Restrictions / Election of Species PNG media_image1.png 228 490 media_image1.png Greyscale PNG media_image2.png 221 206 media_image2.png Greyscale The inventor’s or joint inventor’s provisional election of the following, with traverse, in the reply filed on July 16, 2026, is acknowledged: a) Group II - claims 4, 6, 32 and 50; and b) substituted pyrazolo[1,5-a]pyrimidine of Formula II - p. 50, Compound 2, shown to the right, and hereafter referred to as 4-(5-(3-methylphenethoxy)-2-(pyridin-4-yl)pyrazolo[1,5-a]pyrimidin-7-yl)morpholine, where R1 = -pyridin-4-yl; and R2 = -O(CH2)2-(3-methylphenyl). Claims 4, 32 and 50 read on the elected species. Affirmation of this election must be made by the inventor or joint inventor in replying to this Office action. Similarly, the inventor or joint inventor should further note that since supposed errors in the restriction requirement were not distinctly and specifically pointed out, the election has been treated as an election, without traverse. See MPEP § 818.03(a). Likewise, the inventor or joint inventor should further note that the requirement is still deemed proper and is therefore made FINAL. Next, the inventor or joint inventor should further note that the elected species, shown to the right above, was found to be free of the prior art. Thus, the examiner has expanded the forthcoming prosecution to include all claims relevant to the genus of Group II, for a first Office action and prosecution on the merits. Moreover, the inventor or joint inventor should further note that claims 1-3, 75, 79, 85, 89, 93, 98-101, 103, 104, 106 and 110 were withdrawn from further consideration, pursuant to 37 CFR 1.142(b), as being drawn to a nonelected or cancelled invention, there being no allowable generic or linking claim. Thus, a first Office action and prosecution on the merits of claims 4, 6, 32 and 50 is contained within. Specification Objection - Disclosure The inventor or joint inventor is advised to format the specification according to 37 CFR 1.77(c). Revisions should particularly address bold-type, underline, and/or upper case formatting. Appropriate correction may be required. Specification Objection - Title The inventor or joint inventor is reminded of the proper content of the title of the invention. The title of the invention should be brief, but technically accurate and descriptive and should contain fewer than 500 characters. See 37 CFR 1.72(a) and MPEP § 606. The title of the invention is not technically accurate and descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. In the revised title, the examiner suggests additionally identifying the substituted pyrazolo[1,5-a]pyrimidines of the Formula II. The following title is suggested: SUBSTITUTED PYRAZOLO[1,5-a]PYRIMIDINES AS INHIBITORS OF PIKFYVE. Appropriate correction is required. Specification Objection - Abstract The inventor or joint inventor is reminded of the proper content of an abstract of the disclosure. With regard particularly to chemical patents, for compounds or compositions, the general nature of the compound or composition should be given as well as the use thereof, e.g., The compounds are of the class of alkyl benzene sulfonyl ureas, useful as oral anti-diabetics. Exemplification of a species could be illustrative of members of the class. For processes, the reactions, reagents and process conditions should be stated, generally illustrated by a single example, unless variations are necessary. See MPEP § 608.01(b), Section B. The abstract of the disclosure is objected to because it fails to exemplify any members or formulae illustrative of its class. Correction is required. See MPEP § 608.01(b). The examiner suggests incorporating the structure of Formula II into the abstract, to overcome this objection. Claim Objections Claim 4 is objected to because of the following informalities: for clarity, precision and to avoid issues under 35 U.S.C. § 112(a) and/or 35 U.S.C. § 112(b), the existing recitation should be replaced with the following recitation: A compound of Formula II: PNG media_image3.png 222 238 media_image3.png Greyscale Formula II or a pharmaceutically acceptable salt or stereoisomer thereof, wherein: R1 is pyridin-4-yl; wherein the pyridin-4-yl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein each cycloalkyl and heterocyclyl substituent is optionally and independently substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, =NH, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein each aryl and heteroaryl substituent is optionally and independently substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; (i) R2 is F, CN, C1-C6 alkyl, C1-C6 alkylene-C6-C10 aryl, C1-C6 heteroalkyl, C1-C6 heteroalkylene-C6-C10 aryl, C2-C6 alkenyl, C2-C6 alkenylene-C6-C10 aryl, C(O)NH2, C(O)NHNHR1A, N(alkyl)2, C2-C9 heterocyclyl, pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl; wherein the C1-C6 alkyl, C1-C6 alkylene of C1-C6 alkylene-C6-C10 aryl, C1-C6 heteroalkyl, C1-C6 heteroalkylene of C1-C6 heteroalkylene-C6-C10 aryl, C2-C6 alkenyl, C2-C6 alkenylene of C2-C6 alkenylene-C6-C10 aryl, or N(alkyl)2 is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein the C2-C9 heterocyclyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein the C6-C10 aryl of C1-C6 alkylene-C6-C10 aryl, C6-C10 aryl of C1-C6 heteroalkylene-C6-C10 aryl, C6-C10 aryl of C2-C6 alkenylene-C6-C10 aryl, pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; or (ii) R2 is: PNG media_image4.png 105 154 media_image4.png Greyscale or PNG media_image5.png 82 151 media_image5.png Greyscale ; R1A is H or C2-C10 acyl, wherein the C2-C10 acyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; R2A is C1-C6 alkyl, C3-C6 cycloalkyl, C6-C10 aryl, or C2-C5 heteroaryl; wherein the C1-C6 alkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein the C3-C6 cycloalkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein the C6-C10 aryl or C2-C5 heteroaryl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and R2B is C1-C6 hydroxyalkyl, heteropropyl, heteroisopropyl, cyclopropyl, cyclopropenyl, azetidin-3-yl, piperidinyl, fluorophenyl, methoxyphenyl, pyridin-2-yl, pyridin-3-yl, pyridazin-4-yl, or pyrimidin-5-yl; wherein the C1-C6 hydroxyalkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, NH2, NH(alkyl), N(alkyl)2, =NH, N3, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein the heteropropyl or heteroisopropyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein the piperidinyl is optionally substituted with one or more independently selected C1-C6 alkyl substituents; wherein the azetidin-3-yl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein the cyclopropyl, cyclopropenyl, pyridin-2-yl, pyridin-3-yl, or pyrimidin-5-yl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl. Appropriate correction is required. See MPEP § 2173.02. Claim 6 is objected to because of the following informalities: for clarity, precision and to avoid issues under 35 U.S.C. § 112(b) and/or 35 U.S.C. § 112(d), the existing recitation should be replaced with the following recitation: The compound of claim 4, or a pharmaceutically acceptable salt or stereoisomer thereof, wherein R2 is N(alkyl)2, azetidin-1-yl, azetidin-3-yl, pyrrolidin-2-yl, piperidin-1-yl, 6-oxo-1,5-dihydropyridazinyl, piperazin-1-yl, morpholin-4-yl, N-tetrahydroindazolyl, N-tetrahydropyranopyrazolyl, pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl; wherein the 6-oxo-1,5-dihydropyridazinyl is optionally substituted with one, two, or three substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein the N(alkyl)2 is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; wherein the azetidin-1-yl, azetidin-3-yl, pyrrolidin-2-yl, piperidin-1-yl, piperazin-1-yl, morpholin-4-yl, N-tetrahydroindazolyl, or N-tetrahydropyranopyrazolyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, =NH, N3, OH, =O, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl; and wherein the pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, CN, NO2, alkyl, heteroalkyl, aralkyl, alkenyl, alkynyl, NH2, NH(alkyl), N(alkyl)2, N3, OH, O(phenyl), O(fluorophenyl), SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl. Appropriate correction is required. See MPEP § 2173.02. Claim 32 is objected to because of the following informalities: for clarity, precision and to avoid issues under 35 U.S.C. § 112(b) and/or 35 U.S.C. § 112(d), the existing recitation should be replaced with the following recitation: The compound of claim 4, or a pharmaceutically acceptable salt or stereoisomer thereof, wherein R2 is: (i) C1-C6 alkyl, C1-C6 alkylene-C6-C10 aryl, C1-C6 heteroalkyl, C1-C6 heteroalkylene-C6-C10 aryl, C2-C6 alkenyl, C2-C6 alkenylene-C6-C10 aryl, N(alkyl)2, C2-C9 heterocyclyl, pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl; wherein the C1-C6 alkyl, C1-C6 alkylene of C1-C6 alkylene-C6-C10 aryl, C1-C6 heteroalkyl, C1-C6 heteroalkylene of C1-C6 heteroalkylene-C6-C10 aryl, C2-C6 alkenyl, C2-C6 alkenylene of C2-C6 alkenylene-C6-C10 aryl, or N(alkyl)2 is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; wherein the C2-C9 heterocyclyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; wherein the C6-C10 aryl of C1-C6 alkylene-C6-C10 aryl, C6-C10 aryl of C1-C6 heteroalkylene-C6-C10 aryl, C6-C10 aryl of C2-C6 alkenylene-C6-C10 aryl, pyrazol-3-yl, pyrazol-5-yl, imidazolyl, oxazolyl, pyridin-2-yl, pyridin-3-yl, pyrimidin-4-yl, pyrazinyl, oxadiazolyl, or thiadiazolyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, OH, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; or (ii) R2 is: PNG media_image4.png 105 154 media_image4.png Greyscale or PNG media_image5.png 82 151 media_image5.png Greyscale ; R2A is C1-C6 alkyl, C3-C6 cycloalkyl, C6-C10 aryl, or C2-C5 heteroaryl; wherein the C1-C6 alkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; wherein the C3-C6 cycloalkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; and wherein the C6-C10 aryl or C2-C5 heteroaryl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, OH, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; and R2B is C1-C6 hydroxyalkyl, heteropropyl, heteroisopropyl, cyclopropyl, cyclopropenyl, azetidin-3-yl, piperidinyl, fluorophenyl, methoxyphenyl, pyridin-2-yl, pyridin-3-yl, pyridazin-4-yl, or pyrimidin-5-yl; wherein the C1-C6 hydroxyalkyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, NH2, NH(alkyl), N(alkyl)2, =NH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; wherein the heteropropyl or heteroisopropyl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; wherein the piperidinyl is optionally substituted with one or more independently selected C1-C6 alkyl substituents; wherein the azetidin-3-yl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, =NH, OH, =O, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl; and wherein the cyclopropyl, cyclopropenyl, pyridin-2-yl, pyridin-3-yl, or pyrimidin-5-yl is optionally substituted with one, two, three, or four substituents independently selected from the group consisting of halo, NO2, C1-C6 alkyl, C1-C6 heteroalkyl, benzyl, NH2, NH(alkyl), N(alkyl)2, OH, O(phenyl), O(fluorophenyl), C2-C9 heterocyclyl, phenyl, and pyridin-3-yl. Appropriate correction is required. See MPEP § 2173.02. Claim 50 is objected to because of the following informalities: for clarity, precision and to avoid issues under 35 U.S.C. § 112(b) and/or 35 U.S.C. § 112(d), the existing recitation should be replaced with the following recitation: The compound of claim 4, or a pharmaceutically acceptable salt or stereoisomer thereof, wherein R2 is: PNG media_image6.png 35 101 media_image6.png Greyscale , PNG media_image7.png 68 147 media_image7.png Greyscale , PNG media_image8.png 36 99 media_image8.png Greyscale , PNG media_image9.png 79 159 media_image9.png Greyscale , PNG media_image10.png 41 118 media_image10.png Greyscale , PNG media_image11.png 98 188 media_image11.png Greyscale , PNG media_image12.png 78 112 media_image12.png Greyscale , PNG media_image13.png 101 191 media_image13.png Greyscale , PNG media_image14.png 160 186 media_image14.png Greyscale , PNG media_image15.png 39 69 media_image15.png Greyscale , PNG media_image16.png 121 127 media_image16.png Greyscale , PNG media_image17.png 68 76 media_image17.png Greyscale , PNG media_image18.png 144 146 media_image18.png Greyscale , PNG media_image19.png 67 69 media_image19.png Greyscale , PNG media_image20.png 111 147 media_image20.png Greyscale , PNG media_image21.png 63 95 media_image21.png Greyscale , PNG media_image22.png 110 147 media_image22.png Greyscale , PNG media_image23.png 70 166 media_image23.png Greyscale , PNG media_image24.png 88 167 media_image24.png Greyscale , PNG media_image25.png 167 120 media_image25.png Greyscale , PNG media_image26.png 130 152 media_image26.png Greyscale , PNG media_image27.png 150 122 media_image27.png Greyscale , PNG media_image28.png 95 165 media_image28.png Greyscale , PNG media_image29.png 151 121 media_image29.png Greyscale , PNG media_image30.png 147 135 media_image30.png Greyscale , PNG media_image31.png 168 92 media_image31.png Greyscale , PNG media_image32.png 185 88 media_image32.png Greyscale , PNG media_image33.png 168 121 media_image33.png Greyscale , PNG media_image34.png 106 164 media_image34.png Greyscale , PNG media_image35.png 141 164 media_image35.png Greyscale , PNG media_image36.png 188 95 media_image36.png Greyscale , PNG media_image37.png 106 126 media_image37.png Greyscale , PNG media_image38.png 107 137 media_image38.png Greyscale , PNG media_image39.png 155 169 media_image39.png Greyscale , PNG media_image40.png 153 125 media_image40.png Greyscale , PNG media_image41.png 148 135 media_image41.png Greyscale , PNG media_image42.png 147 135 media_image42.png Greyscale , PNG media_image43.png 107 162 media_image43.png Greyscale , PNG media_image44.png 109 163 media_image44.png Greyscale , PNG media_image45.png 109 161 media_image45.png Greyscale , PNG media_image46.png 108 167 media_image46.png Greyscale , PNG media_image47.png 165 119 media_image47.png Greyscale , PNG media_image48.png 148 136 media_image48.png Greyscale , PNG media_image49.png 191 97 media_image49.png Greyscale , PNG media_image50.png 95 123 media_image50.png Greyscale , PNG media_image51.png 95 128 media_image51.png Greyscale , PNG media_image52.png 112 127 media_image52.png Greyscale , PNG media_image53.png 65 132 media_image53.png Greyscale , PNG media_image54.png 67 129 media_image54.png Greyscale , PNG media_image55.png 112 109 media_image55.png Greyscale , PNG media_image56.png 69 172 media_image56.png Greyscale , PNG media_image57.png 77 163 media_image57.png Greyscale , PNG media_image58.png 67 172 media_image58.png Greyscale , PNG media_image59.png 78 171 media_image59.png Greyscale , PNG media_image60.png 68 168 media_image60.png Greyscale , PNG media_image61.png 75 165 media_image61.png Greyscale , PNG media_image62.png 73 167 media_image62.png Greyscale , PNG media_image63.png 74 174 media_image63.png Greyscale , PNG media_image64.png 92 163 media_image64.png Greyscale , PNG media_image65.png 72 184 media_image65.png Greyscale , PNG media_image66.png 71 193 media_image66.png Greyscale , PNG media_image67.png 157 126 media_image67.png Greyscale , PNG media_image68.png 92 160 media_image68.png Greyscale ,, PNG media_image69.png 114 165 media_image69.png Greyscale , PNG media_image70.png 69 164 media_image70.png Greyscale , PNG media_image71.png 94 170 media_image71.png Greyscale , PNG media_image72.png 68 172 media_image72.png Greyscale , PNG media_image73.png 71 162 media_image73.png Greyscale , PNG media_image74.png 91 136 media_image74.png Greyscale , PNG media_image75.png 88 172 media_image75.png Greyscale , PNG media_image76.png 123 197 media_image76.png Greyscale , PNG media_image77.png 135 165 media_image77.png Greyscale , PNG media_image78.png 110 174 media_image78.png Greyscale , PNG media_image79.png 118 178 media_image79.png Greyscale , PNG media_image80.png 94 205 media_image80.png Greyscale , PNG media_image81.png 93 180 media_image81.png Greyscale , PNG media_image82.png 90 165 media_image82.png Greyscale , PNG media_image83.png 98 158 media_image83.png Greyscale , PNG media_image84.png 107 167 media_image84.png Greyscale , PNG media_image85.png 115 162 media_image85.png Greyscale , PNG media_image86.png 116 162 media_image86.png Greyscale , PNG media_image87.png 127 116 media_image87.png Greyscale , PNG media_image88.png 133 123 media_image88.png Greyscale , PNG media_image89.png 160 118 media_image89.png Greyscale , PNG media_image90.png 160 131 media_image90.png Greyscale , PNG media_image91.png 73 168 media_image91.png Greyscale , PNG media_image92.png 73 88 media_image92.png Greyscale , PNG media_image93.png 168 110 media_image93.png Greyscale , PNG media_image94.png 166 108 media_image94.png Greyscale , PNG media_image95.png 167 98 media_image95.png Greyscale , PNG media_image96.png 149 142 media_image96.png Greyscale , PNG media_image97.png 148 139 media_image97.png Greyscale , PNG media_image98.png 150 165 media_image98.png Greyscale , PNG media_image99.png 158 169 media_image99.png Greyscale , PNG media_image100.png 168 143 media_image100.png Greyscale , PNG media_image101.png 164 143 media_image101.png Greyscale , PNG media_image102.png 164 97 media_image102.png Greyscale , , PNG media_image103.png 165 97 media_image103.png Greyscale , PNG media_image104.png 146 120 media_image104.png Greyscale , PNG media_image105.png 72 160 media_image105.png Greyscale , PNG media_image106.png 150 123 media_image106.png Greyscale , PNG media_image107.png 151 123 media_image107.png Greyscale , PNG media_image108.png 74 160 media_image108.png Greyscale , or PNG media_image109.png 150 121 media_image109.png Greyscale . Appropriate correction is required. See MPEP § 2173.02. Claim Rejections - 35 U.S.C. § 112(b) The following is a quotation of the second paragraph of 35 U.S.C. § 112: (b) CONCLUSION. The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or joint inventor regards as the invention. Claims 4, 6, 32 and 50 are rejected under 35 U.S.C. § 112(b) as being indefinite for failing to set forth the subject matter which the inventor or joint inventor regards as the invention. The inventor or joint inventor should note that the phrase, optionally substituted, in claim 4, with regard to R1, R1A, R2, R2A, and/or R2B, respectively, is a relative phrase which renders the claims indefinite. The phrase, optionally substituted, is not defined by the claim, the specification does not provide an adequate standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the metes and bounds of the invention. The specification, on page 17, uses open language, such as include and for example, to define the term, substituent, using a boiler plate list of functional groups, such as ayyl, carbocyclyl, etc., and further discloses that the substituents themselves may be further substituted; however, neither the specification, nor the claim, explicitly limits the invention to any specifically disclosed or recited embodiments. Consequently, the substituted pyrazolo[1,5-a]pyrimidines of the Formula II have been rendered indefinite by the use of the phrase, optionally substituted, with regard to R1, R1A, R2, R2A, and/or R2B, respectively. Moreover, the inventor or joint inventor should further note that [C]laims which depend from indefinite claims are also indefinite. {See Ex parte Cordova, 10 USPQ 2d 1949, 1952 (PTO Bd. App. 1989)}. The examiner suggests amending the claims, particularly as stated in the section above entitled Claim Objections, to overcome this rejection. Claims 4 and 32 are further rejected under 35 U.S.C. § 112(b) as being indefinite for failing to set forth the subject matter which the inventor or joint inventor regards as the invention. The inventor or joint inventor should note that claim 4 recites the limitations, C1-C6 alkenyl and C6-C10 aryl-C1-C6 alkenyl, respectively, with regard to R2, where the limitations are implausible, resulting in an incomplete valence. Claims are unduly speculative where they define only a portion of a substituted pyrazolo[1,5-a]pyrimidine of the Formula I. Consequently, since incomplete valences are not permitted in the structure of the substituted pyrazolo[1,5-a]-pyrimidines of the Formula I, an essential portion of the substituted pyrazolo[1,5-a]pyrimidines of the Formula I is indefinite and one of ordinary skill in the art would not be reasonably apprised of the metes and bounds of the substituted pyrazolo[1,5-a]pyrimidines of the Formula I. {See Ex parte Pedlow and Miner, 90 USPQ 395 (Bd. Pat. App. & Int. 1951)}. The examiner suggests amending the claims, particularly as stated in the section above entitled Claim Objections, to overcome this section of the rejection. Similarly, the inventor or joint inventor should further note that a broad limitation together with a narrow limitation that falls within the broad limitation (in the same claim) is considered indefinite, since the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c), MPEP § 2173.05(h), and/or Eli Lilly & Co. v. Teva Parenteral Meds., 845 F.3d 1357, 1371, 121 USPQ2d 1277, 1287 (Fed. Cir. 2017). Likewise, the inventor or joint inventor should further note that claim 4 recites the broad limitation, C2-C9 heterocyclyl, with regard to R2, and the claim also recites N-tetrahydropyrano-pyrazolyl, N-tetrahydroindazolyl, and 6-oxo-1,5-dihydropyridazin-1-yl, respectively, with regard to R2, which are the narrower statements of the limitation. Next, the inventor or joint inventor should further note the explanation given by the Board of Patent Appeals and Interferences in Ex parte Wu, 10 USPQ2d 2031, 2033 (Bd. Pat. App. & Inter. 1989), pertaining to where broad language is followed by such as and then narrow language. The Board stated that this can render a claim indefinite by raising a question or doubt as to whether the feature introduced by such language is (a) merely exemplary of the remainder of the claim, and consequently, not required, or (b) a required feature of the claim. Then, the inventor or joint inventor should further note the explanation given by the Board of Patent Appeals and Interferences in the decisions of Ex parte Steigewald, 131 USPQ 74 (Bd. App. 1961); Ex parte Hall, 83 USPQ 38 (Bd. App. 1948); and Ex parte Hasche, 86 USPQ 481 (Bd. App. 1949). Moreover, the inventor or joint inventor should further note that [C]laims which depend from indefinite claims are also indefinite. {See Ex parte Cordova, 10 USPQ 2d 1949, 1952 (PTO Bd. App. 1989)}. The examiner suggests amending the claims, particularly as stated in the section above entitled Claim Objections, to overcome this section of the rejection. Claim 6 is further rejected under 35 U.S.C. § 112(b) as being indefinite for failing to set forth the subject matter which the inventor or joint inventor regards as the invention. The inventor or joint inventor should note that claim 6 recites the limitation, The compound of claim 4, wherein R2 is… optionally substituted imidazolyl, in lines 1-10 of the claim. There is insufficient antecedent basis, in claim 4, for this limitation, with respect to the substituted pyrazolo-[1,5-a]pyrimidines of the Formula I. According to claim 4, R2 is not recited as optionally substituted imidazolyl, with respect to the substituted pyrazolo[1,5-a]pyrimidines of the Formula I. The examiner suggests amending the claim, particularly as stated in the section above entitled Claim Objections, to overcome this rejection. Claim 32 is further rejected under 35 U.S.C. § 112(b) as being indefinite for failing to set forth the subject matter which the inventor or joint inventor regards as the invention. The inventor or joint inventor should note that a broad limitation together with a narrow limitation that falls within the broad limitation (in the same claim) is considered indefinite, since the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c), MPEP § 2173.05(h), and/or Eli Lilly & Co. v. Teva Parenteral Meds., 845 F.3d 1357, 1371, 121 USPQ2d 1277, 1287 (Fed. Cir. 2017). Similarly, the inventor or joint inventor should further note that claim 32 recites the broad limitations, (1) optionally substituted phenoxy; (2) optionally substituted C1-C6 alkyl; (3) halo; (4) optionally substituted C1-C6 heteroalkyl; and (5) optionally substituted C2-C9 heterocyclyl, respectively, with regard to R2, and the claim also recites (1) 3-fluorophenoxy and 4-fluoro-phenoxy; (2) methyl; (3) bromo; (4) methoxy; and (5) optionally substituted piperidin-3-yl and optionally substituted 1,2,3,6-tetrahydropyridin-3-yl, respectively, with regard to R2, which is the narrower statement of the limitation. Likewise, the inventor or joint inventor should further note the explanation given by the Board of Patent Appeals and Interferences in Ex parte Wu, 10 USPQ2d 2031, 2033 (Bd. Pat. App. & Inter. 1989), pertaining to where broad language is followed by such as and then narrow language. The Board stated that this can render a claim indefinite by raising a question or doubt as to whether the feature introduced by such language is (a) merely exemplary of the remainder of the claim, and consequently, not required, or (b) a required feature of the claim. Moreover, the inventor or joint inventor should further note the explanation given by the Board of Patent Appeals and Interferences in the decisions of Ex parte Steigewald, 131 USPQ 74 (Bd. App. 1961); Ex parte Hall, 83 USPQ 38 (Bd. App. 1948); and Ex parte Hasche, 86 USPQ 481 (Bd. App. 1949). The examiner suggests amending the claim, particularly as stated in the section above entitled Claim Objections, to overcome this rejection. Claim 50 is further rejected under 35 U.S.C. § 112(b) as being indefinite for failing to set forth the subject matter which the inventor or joint inventor regards as the invention. The inventor or joint inventor should note that claim 6 recites the limitation, The compound of claim 4, wherein R2 is… 3-(5,5-difluoropiperidin-3-yl)pyraxzol-1-yl, etc.. There is insufficient antecedent basis, in claim 4, for this limitation, with respect to the substituted pyrazolo[1,5-a]-pyrimidines of the Formula I. According to claim 4, R2 is not recited as at least 3-(5,5-difluoro-piperidin-3-yl)pyraxzol-1-yl, with respect to the substituted pyrazolo[1,5-a]pyrimidines of the Formula I. The examiner suggests amending the claim, particularly as stated in the section above entitled Claim Objections, to overcome this rejection. Claim Rejections - 35 U.S.C. § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. § 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 4, 32 and 50 in 63/093705 are rejected under 35 U.S.C. § 102(a)(2) as being anticipated by V. Patel in US 2024/0018151. PNG media_image110.png 83 152 media_image110.png Greyscale PNG media_image2.png 221 206 media_image2.png Greyscale The inventor or joint inventor should note that the instant invention recites a substituted pyrazolo[1,5-a]pyrimidine of the Formula II, shown to the left, where R1 = -optionally substituted pyridin-4-yl; and R2 is shown to the right above, wherein R2B = -fluorophenyl, respectively, and/or a pharmaceutical composition thereof, as a FYVE-type zinc finger containing phosphoinositide kinase (PIKfyve) inhibitor. PNG media_image111.png 239 364 media_image111.png Greyscale Similarly, the inventor or joint inventor should further note that Patel (US 2024/0018151, PNG media_image110.png 83 152 media_image110.png Greyscale teaches a substituted pyrazolo[1,5-a]pyrimidine of the Formula II, shown to the right, where R1 = -pyridin-4-yl; and R2 is shown to the left above, wherein R2B = -2-fluorophenyl, respectively, as a synergistic therapeutic agent [p. 7, column 1, row 3; and p. 11 in 63/093705]. Likewise, the inventor or joint inventor should further note that, although not explicitly discussed herein, this reference contains additional species that may anticipate the instantly recited substituted pyrazolo[1,5-a]pyrimidines of the Formula II. Consequently, any amendments to the claims and/or arguments formulated to overcome rejections rendered under 35 U.S.C. § 102 should address this reference as a whole and should not be limited to the species discussed or disclosed explicitly herein. Moreover, the inventor or joint inventor should further note that in the event the determination of the status of the invention as subject to AIA 35 U.S.C. § 102 (or as subject to pre-AIA 35 U.S.C. § 102) is incorrect, any correction of the statutory basis for the instant 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. Allowable Subject Matter No claims are allowed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DOUGLAS M. WILLIS, whose telephone number is 571-270-5757. The examiner may normally be reached on Monday thru Thursday from 8:00-6:00 EST. The examiner is also available on alternate Fridays. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Mr. Jeffrey Murray, may be reached on 571-272-9023. The fax phone number for the organization where this invention or proceeding is assigned is 571-273-8300. Information regarding the status of an invention may be obtained from Patent Center. For more information about Patent Center, see https://www.uspto.gov/patents/apply/patent-center. Should you have questions on access to Patent Center, contact the Patent Electronic Business Center (PEBC) at 866-217-9197 (toll-free) or ebc@uspto.gov. /DOUGLAS M WILLIS/ Primary Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Jun 06, 2024
Application Filed
Aug 26, 2026
Non-Final Rejection mailed — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12747240
QUINOXALINE DERIVATIVES
4y 2m to grant Granted Sep 29, 2026
Patent 12741969
Process for the preparation of 4-(3,5-difluorophenyl)-N-[3-(6-methylpyrimidin-4-yl)-3-azabicyclo[3.2.1]octan-8-yl]-6,7-dihydro-5H-[1,2,4]triazolo[1,5-a]pyrimidin-2-amine
3y 3m to grant Granted Sep 22, 2026
Patent 12735423
DEGRADATION OF BRUTON'S TYROSINE KINASE (BTK) BY CONJUGATION OF BTK INHIBITORS WITH E3 LIGASE LIGAND AND METHODS OF USE
3y 11m to grant Granted Sep 15, 2026
Patent 12734157
METHOD FOR PREVENTING AND/OR TREATING LIVER FIBROSIS BY USING 6-METHOXYBENZOXAZOLINONE AND COIX LACHRYMA-JOBI L. EXTRACT COMPRISING 6-METHOXYBENZOXAZOLINONE
3y 2m to grant Granted Sep 15, 2026
Patent 12703704
PROCESS FOR PREPARING ENANTIOMERICALLY ENRICHED PYRROLO[2,3-D]PYRIMIDINE COMPOUNDS
2y 4m to grant Granted Aug 11, 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
82%
Grant Probability
99%
With Interview (+19.7%)
1y 10m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1814 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