Prosecution Insights
Last updated: April 19, 2026
Application No. 18/272,063

TREATMENT OF PATHOLOGICAL FATIGUE WITH OXALOACETATE

Final Rejection §102§DP
Filed
Jul 12, 2023
Examiner
HAVLIN, ROBERT H
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Alan B Cash
OA Round
2 (Final)
53%
Grant Probability
Moderate
3-4
OA Rounds
2y 11m
To Grant
80%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allow Rate
534 granted / 1016 resolved
-7.4% vs TC avg
Strong +27% interview lift
Without
With
+27.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
99 currently pending
Career history
1115
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
30.8%
-9.2% vs TC avg
§102
24.8%
-15.2% vs TC avg
§112
28.2%
-11.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1016 resolved cases

Office Action

§102 §DP
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 is a 371 of PCT/US2022/012327 (01/13/2022) PCT/US2022/012327 has PRO 63/137,524 (01/14/2021). Status Rejections not reiterated in this action are withdrawn. Claims 1-17 are pending. New Claim Rejections - 35 USC § 102 Claims 1-17 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Bohne et al. (WO2018097733). Bohne teaches “treatment of chronic fatigue syndrome (CFS)/ myalgia encephalomyelitis (ME)” by administering a therapeutic amount of a “composition comprising oxalate or oxalic acid, or a salt prodrug, derivative or metabolite thereof” (claim 1) where the oxalate is “oxaloacetic acid” (claim 3) administered as a tablet (p. 55-56). Thus, claim 1 is anticipated. Regarding claims 2-3 specifying anhydrous enol-oxaloacetate, as evidenced by Cash (US20130143930, [0037]: “the solid form of oxaloacetic acid is primarily in the enol form”) the solid form taught by Bohne inherently teaches anhydrous enol-oxaloacetate. Regarding claim 4 specifying the fatigue is associated with cancer in a subject, Bohne teaches CFS patients have cancer (p. 41). Regarding claims 5-8, Bohne teaches administration of 610 mg oxalate (p. 52) administered as a tablet (p. 55-56). Regarding claim 9 to a “method of treating fatigue associated with a disease in a subject, the method comprising administering a therapeutic amount of a compound to reverse metabolic dysfunction in the subject”, as with claim 1 administration of the oxaloacetic acid would also inherently result in reversing metabolic dysfunction in the subject. Regarding claims 10-17, as with claims 2-8, Bohne anticipates. Double Patenting Claims 1-17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-17 of U.S. Patent No. 10016385. Although the claims at issue are not identical, they are not patentably distinct from each other because the patent claims are to a scope that includes methods of treating disease including cancer (claims 9-10) by administering oxaloacetate which would inherently treat associated fatigue and anticipates and renders obvious the instant claims. Claims 1-3, 5-17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-9 of U.S. Patent No. 11173139. Although the claims at issue are not identical, they are not patentably distinct from each other because the patent claims are to a scope that includes methods of treating Alzheimer’s disease by administering oxaloacetate which would inherently treat associated fatigue which anticipates and renders obvious the instant claims. Conclusion No claims allowed. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT H HAVLIN whose telephone number is (571)272-9066. The examiner can normally be reached 9am - 6pm. 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) 270-5293. 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. /ROBERT H HAVLIN/Primary Patent Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Jul 12, 2023
Application Filed
Nov 12, 2025
Non-Final Rejection — §102, §DP
Feb 17, 2026
Response Filed
Mar 27, 2026
Final Rejection — §102, §DP (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

3-4
Expected OA Rounds
53%
Grant Probability
80%
With Interview (+27.2%)
2y 11m
Median Time to Grant
Moderate
PTA Risk
Based on 1016 resolved cases by this examiner. Grant probability derived from career allow rate.

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