Prosecution Insights
Last updated: October 02, 2026
Application No. 19/174,611

KETONE BEVERAGE CONTAINING CAFFEINE AND (R)-1,3-BUTANEDIOL AND/OR (R)-BETA-HYDROXYBUTYRIC ACID AND SALTS

Non-Final OA §103§112
Filed
Apr 09, 2025
Priority
Nov 19, 2021 — divisional of 17/455,826 +1 more
Examiner
ZILBERING, ASSAF
Art Unit
1792
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Ketoneaid Inc.
OA Round
2 (Non-Final)
35%
Grant Probability
At Risk
2-3
OA Rounds
2y 8m
Est. Remaining
63%
With Interview

Examiner Intelligence

Grants only 35% of cases
35%
Career Allowance Rate
232 granted / 659 resolved
-29.8% vs TC avg
Strong +28% interview lift
Without
With
+27.8%
Interview Lift
resolved cases with interview
Typical timeline
4y 2m
Avg Prosecution
49 currently pending
Career history
717
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
63.5%
+23.5% vs TC avg
§102
7.9%
-32.1% vs TC avg
§112
22.3%
-17.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 659 resolved cases

Office Action

§103 §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 Claims 1-18 are pending in the current application. Claims 7-18 are withdrawn from consideration. Claims 1-6 are examined in the current application. Claim Rejections - 35 USC § 112 Claims 4 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for the use and dosage of (R)-3-hydroxybutyl (R)-3-hydroxybutanoate to attain the benefits of the ketone body, does not reasonably provide enablement for the dosage needed to attain the physiological benefits contemplated. Accordingly, The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to practice the invention commensurate in scope with this claim. To be enabling, the specification of the patent must teach those skilled in the art how to make and use the full scope of the claimed invention without undue experimentation. In re Wright, 999 F.2d 1557, 1561 (Fed. Cir. 1993). Explaining what is meant by "undue experimentation," the Federal Circuit has stated: The test is not merely quantitative, since a considerable amount of experimentation is permissible, if it is merely routine, or if the specification in question provides a reasonable amount of guidance with respect to the direction in which the experimentation should proceed to enable the determination of how to practice a desired embodiment of the claimed invention. PPG v. Guardian, 75 F.3d 1558, 1564 (Fed. Cir. 1996). The factors that may be considered in determining whether a disclosure would require undue experimentation are set forth by In re Wands, 8 USPQ2d 1400 (CAFC 1988) at 1404 where the court set forth the eight factors to consider when assessing if a disclosure would have required undue experimentation. Citing Ex parte Forman, 230 USPQ 546 (BdApls 1986) at 547 the court recited eight factors: the quantity of experimentation necessary, the amount of direction or guidance provided, the presence or absence of working examples, the nature of the invention, the state of the prior art, the relative skill of those in the art, the predictability of the art, and the breadth of the claims. These factors are always applied against the background understanding that scope of enablement varies inversely with the degree of unpredictability involved. In re Fisher, 57 CCPA 1099, 1108,427 F.2d 833,839, 166 USPQ 18, 24 (1970). Keeping that in mind, the Wands factors are relevant to the instant fact situation for the following reasons: The nature of the invention, state and predictability of the art, and relative skill level The invention relates to a ketogenic beverage composition comprising R-1,3-butanediol which provides ketone bodies and their benefits to the consumer. The breadth of the claims Since the instant specification provides only a mass amounts of R-1,3-butanediol in the beverage composition, without disclosing the total amount of the beverage composition, the specification provides no limiting relative amount of R-1,3-butanediol to be used to attain the benefits contemplated, the relative content of R-1,3-butanediol will be interpreted expansively. The claim is thus very broad insofar as it suggests that relative content of R-1,3-butanediol will provide the contemplated effect. The amount of direction or guidance provided and the presence or absence of working examples The specification provides no direction or guidance for practicing the claimed invention in its "full scope". No reasonably specific guidance is provided concerning the relative content of R-1,3-butanediol, and the recited mass content of R-1,3-butanediol, encompasses any possible dilution of R-1,3-butanediol, including dilutions the contemplated effect will not be attained. The quantity of experimentation necessary Because of the infinite breath of possible dilutions, and the absence of experimental evidence, no one skilled in the art would accept the assertion that any relative content (i.e., dilution) of the instantly claimed R-1,3-butanediol in the composition could provide the benefits contemplated. Accordingly, the instant claim does not comply with the enablement requirement of §112, since to practice the claimed invention in its "full scope" a person of ordinary skill in the art would have to engage in undue experimentation, with no reasonable expectation of success. Claim Rejections - 35 USC § 103 The text of those sections of Title 35 of the U.S. Code not included in this action can be found in a prior Office action. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-6 are rejected under 35 U.S.C. 103 as being unpatentable over Steinberg (USPatPub. 2020/0077690 A1) in view of Millet (USPatPub. 2021/0169831 A1). Regarding claims 1-4: Steinberg discloses a composition that increases energy, improves insulin sensitivity and enhances physical endurance during increased physical activity comprising caffeine and beta-hydroxybutyrate bonded to R-1,3-butanediol, wherein the caffeine is extracted from green tea leaves (see Steinberg abstract; paragraphs [0004], [0009], [0043] and [0053]), but fails to disclose R-1,3-butanediol; However, Millet discloses that R-1,3-butanediol provides a spike in plasma ketone bodies quicker than beta-hydroxybutyrate (see Millet paragraph [0019] and Figure 1A). Therefore, it would have been obvious to a skilled artisan who desires to attain a product that will quickly increase the plasma content of ketone bodies, and thus arrive at the claimed limitations. Regarding claim 5: Steinberg discloses the composition comprises glucose and/or fructose (see Steinberg abstract; paragraphs [0009] and [0041]), which reads on “sweeteners”. Regarding claim 6: Steinberg discloses the composition is blended with water or another drinkable liquid for consumption (see Steinberg paragraph [0042]), which reads on “beverage, drink”. Response to Arguments Applicant’s arguments, see “Remarks”, filed on July 7th 2026, with respect to the rejection of claims 1-6 under 35 USC §103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new grounds of rejection is made in view of Steinberg (USPatPub. 2020/0077690 A1) in view of Millet (USPatPub. 2021/0169831 A1) (see discussion above). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ASSAF ZILBERING whose telephone number is (571)270-3029. The examiner can normally be reached M-F 8:30-5:00. 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, Erik Kashnikow can be reached on (571) 270-3475. 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. /ASSAF ZILBERING/Examiner, Art Unit 1792
Read full office action

Prosecution Timeline

Apr 09, 2025
Application Filed
May 27, 2026
Non-Final Rejection mailed — §103, §112
Jul 07, 2026
Response Filed
Sep 23, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12745786
Compositions with novel cannabinoid and terpene profiles
5y 3m to grant Granted Sep 29, 2026
Patent 12745782
OIL/FAT COMPOSITION
3y 0m to grant Granted Sep 29, 2026
Patent 12740575
Method Of Efficiently Separating Solid Fat From Polyunsaturated Fatty Acid Grease
3y 3m to grant Granted Sep 22, 2026
Patent 12696909
A VEGETABLE FAT COMPOSITION COMPRISING C14 FATTY ACIDS AND OTHER SATURATED FATTY ACIDS
3y 5m to grant Granted Aug 04, 2026
Patent 12672658
OIL-AND-FAT COMPOSITION
5y 5m to grant Granted Jul 07, 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

2-3
Expected OA Rounds
35%
Grant Probability
63%
With Interview (+27.8%)
4y 2m (~2y 8m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 659 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