Prosecution Insights
Last updated: July 17, 2026
Application No. 17/424,055

Methods of Treating Epilepsy via Phosphodiesterase 4 (PDE4) Inhibition

Final Rejection §112
Filed
Jul 19, 2021
Priority
Jan 23, 2019 — provisional 62/796,002 +2 more
Examiner
ROZOF, TIMOTHY R
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Path Therapeutics Inc.
OA Round
4 (Final)
73%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
697 granted / 960 resolved
+12.6% vs TC avg
Strong +24% interview lift
Without
With
+24.0%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
49 currently pending
Career history
992
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
23.8%
-16.2% vs TC avg
§102
27.9%
-12.1% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 960 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 . DETAILED ACTION This is a response to Applicant’s communication filed on March 10, 2026. Application No. 17/424,055, is a 371 of PCT/US20/14819, filed January 23, 2020, and claims the benefit of U.S. Provisional application No. 62/796,002, filed January 23, 2019. In a preliminary amendment filed March 21, 2022, Applicant cancelled claims 19-21 and 24-26. In an amendment filed January 27, 2025, Applicant cancelled claims 2-7, 9-13, 16-18, and 23. In an amendment filed August 20, 2025, Applicant cancelled claims 14 and 15. In an amendment filed March 10, 2026, Applicant’s added new claims 27-29. Claims 1, 8, and 27-29 are pending. Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on August 20, 2025, has been entered. Rejection Maintained Claim Rejections - 35 USC § 112(a) The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—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 or joint inventor of carrying out the invention. The rejection of claims 1, 8 and new claims 28, and 29 under 35 U.S.C. 112(a) as failing to comply with the enablement requirement, is maintained for reasons made of record. Applicant argues that the specification as filed discloses specific allosteric PDE4 inhibitors selective for PDE4B, such as, the 2-arylpyrimidine derivative compound A-33 (as described in Hagan et al. (2014) Bioorg Med Chem Lett. 24(16):4031-4 and Fox et al. (2014) Cell Signal. 26(3):657-63) - see Fig. 5 of Fox et al., 2014) and the triazine compounds described in Hagan et al. (supra).” (March 10, 2026, Remarks, p. 4, emphasis added.) Applicant’s argument has been fully considered and is not persuasive. The claims are drawn to a method of treating epilepsy by administering a small molecule allosteric phosphodiesterase (PDE4B inhibitor) generally. By applicant’s own admission the specification only discloses a single compound as a selective PDE4B inhibitors, Compound A-33. The only other triazine compound disclosed in Hagan et al., is A-33. There is no correlation between the disclosure of the present invention/the prior art, and selective PDE4B inhibition with any other PDE4B inhibitor other than A-33, and the method of treating epilepsy as presently claimed. Accordingly, it would require undo experimentation for the ordinary artisan to practice the claimed invention. Conclusion Claims 1, 8, 28 and 29 are not allowed. Claim 27 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to TIMOTHY R ROZOF whose telephone number is (571)270-5992. The examiner can normally be reached Monday - Friday, 9:00 a.m. -5:00 p.m.. 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 on (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. /TIMOTHY R ROZOF/ Primary Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Show 1 earlier event
Jul 25, 2024
Non-Final Rejection mailed — §112
Jan 27, 2025
Response Filed
Mar 20, 2025
Final Rejection mailed — §112
Aug 20, 2025
Request for Continued Examination
Aug 21, 2025
Response after Non-Final Action
Sep 10, 2025
Non-Final Rejection mailed — §112
Mar 10, 2026
Response Filed
May 05, 2026
Final Rejection mailed — §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

5-6
Expected OA Rounds
73%
Grant Probability
97%
With Interview (+24.0%)
2y 0m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 960 resolved cases by this examiner. Grant probability derived from career allowance rate.

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