Prosecution Insights
Last updated: April 19, 2026
Application No. 18/308,288

INHIBITORS OF ENPP1 AND MODULATION OF BONE GROWTH

Non-Final OA §102
Filed
Apr 27, 2023
Examiner
SEAMAN, D MARGARET M
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Petragen Inc.
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
2y 4m
To Grant
84%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
1063 granted / 1387 resolved
+16.6% vs TC avg
Moderate +8% lift
Without
With
+7.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
20 currently pending
Career history
1407
Total Applications
across all art units

Statute-Specific Performance

§101
3.7%
-36.3% vs TC avg
§103
15.1%
-24.9% vs TC avg
§102
24.3%
-15.7% vs TC avg
§112
33.9%
-6.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1387 resolved cases

Office Action

§102
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 . Priority This application was filed 04/27/2023 and claims PRO 63/336630 (04/29/2022). Claims 1-21 are before the Examiner. Claim Rejections - 35 USC § 102 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. 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 1-21 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by WO2019046778 in view of WO2019104316. WO2019046778 teaches ENPP1 inhibitors such as 396 on page 113 which is N-[[4-(7-methoxy-4-uinolinyl)phenyl]methyl]sulfamide as claimed in claims 7 and 8. The pharmaceutical composition is taught on pages 122 and 123 of 778 (claim 15 and 17). Inhibition of ENPP1 is taught on page 123. Page 123 teaches a composition having an effective amount ranging from 0.1µg – 50mg (claims 9-11). WO2019104316 teaches that ENPP1 inhibitors can treat cancer, periodontal disease autoimmune disorders, inflammatory disorders, metabolic disorders and other conditions. The only compound taught by applicant is the compound #396 taught by the WO’778. The nucleoside-based inhibitor (claims 4-6), small molecule (claim 3), structural similarity (claim 7), topological polar surface area (claim 12), molecular weight (claim 13) and hydrogen bond donors (claim 14) are inherent in the compound #396 which is the compound named in claim 8. WO’778 teaches the ENPP1 inhibitor treats cancer (claims 18 and 19). WO316 teaches similar ENPP1 inhibitors and more conditions that such inhibitors can treat including dental diseases, autoimmune disorders and others that cover claims 16 and 20-21. This anticipates the instant claims. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to D MARGARET M SEAMAN whose telephone number is (571)272-0694. The examiner can normally be reached M-F 8am-4pm Eastern. 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 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. /D MARGARET M SEAMAN/Primary Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Apr 27, 2023
Application Filed
Feb 17, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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A COMPOSITION AND METHOD FOR PREPARING N-PHENYLPYRAZOLE-1-CARBOXAMIDES
2y 5m to grant Granted Apr 14, 2026
Patent 12595234
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2y 5m to grant Granted Apr 07, 2026
Patent 12595239
SUBSTITUTED ISOXAZOLINE DERIVATIVES
2y 5m to grant Granted Apr 07, 2026
Patent 12590072
THYROMIMETICS
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Patent 12577207
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2y 5m to grant Granted Mar 17, 2026
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
77%
Grant Probability
84%
With Interview (+7.9%)
2y 4m
Median Time to Grant
Low
PTA Risk
Based on 1387 resolved cases by this examiner. Grant probability derived from career allow rate.

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