Prosecution Insights
Last updated: October 04, 2026
Application No. 16/913,615

PALATABILITY ENHANCERS FOR PET FOOD, METHOD OF PREPARATION AND USES THEREOF

Final Rejection §103
Filed
Jun 26, 2020
Priority
Dec 18, 2013 — EU 13306761.1 +2 more
Examiner
GLIMM, CARRIE LYNN STOFFEL
Art Unit
1793
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Specialites Pet Food
OA Round
8 (Final)
26%
Grant Probability
At Risk
9-10
OA Rounds
0m
Est. Remaining
40%
With Interview

Examiner Intelligence

Grants only 26% of cases
26%
Career Allowance Rate
20 granted / 78 resolved
-39.4% vs TC avg
Moderate +14% lift
Without
With
+14.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
27 currently pending
Career history
114
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
51.3%
+11.3% vs TC avg
§102
8.4%
-31.6% vs TC avg
§112
31.9%
-8.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 78 resolved cases

Office Action

§103
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 . Status of Application Claims 11, 12, 17 and 18 are pending. Claims 1-10, 13-16 and 19 have been cancelled. The previous 103 rejections have been modified in view of applicant’s amendments to the claims. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 11-12 and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Sunvold (US 2010/0303978 A1). Regarding claims 11-12 and 17, Sunvold discloses a process of making a pet food comprising extruding a mixture to form a core pellet, providing a coating, wherein the coating comprises a vitamin; and applying the coating to the core pellet to form a coated kibble (Abstract). Sunvold discloses the pet may be a dog [0020]. Sunvold discloses the coating is applied to increase animal preference of the food (a palatable dog food/obtaining a palatable dog food) [0039]. Sunvold discloses the kibble can be coated with a vitamin coating [0104] and the vitamin can be ascorbic acid (PECa) [0051]. Sunvold discloses the vitamin coating can include a palatant component [0104]. Sunvold does not require ascorbyl palmitate in the composition, therefore the process of Sunvold meets the claim limitation of ascorbyl palmitate is excluded as a derivative of ascorbic acid. Sunvold discloses the coating can comprise several coating components including 1-10 wt% a palatant component and the palatant can be liquid digest derived from chicken livers (a palatability enhancer in liquid form) [0058]. Sunvold discloses brewers dried yeast as an optional ingredient [0037] and yeast is therefore not a required ingredient. Sunvold does not disclose a specific embodiment with a coating comprising ascorbic acid and the palatant component of liquid digest derived from chicken livers, however, since Sunvold discloses the coating can comprise several components [0040] and the kibble can have more than one coating and each of these coatings can be comprised of any of the coating components described in the document [0041], it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to make a coating of ascorbic acid and the palatant component because Sunvold discloses making multiple coatings comprised of mixtures of the coating components disclosed. Sunvold’s disclosure of 1-10 wt% of the palatant component in the coating results in greater than 90-99 wt% of the coating comprising the ascorbic acid, which falls within the claimed range of 0.01-99.99 wt % of the PECa (ascorbic acid) in the PECb. Sunvold discloses the kibble can have more than one coating and each of these coatings can be comprised of any of the coating components described in the document [0041]. Sunvold discloses the coating can be a binder and the binder can be lipids and lipid derivatives such as plant and animal fats [0048]. Sunvold discloses the finished coated kibble comprises less than 0.2 wt% of the vitamin component [0110], which overlaps with the claimed range of 0.0016-0.3 wt%. In the case where the claimed ranges "overlap or lie inside ranges disclosed by the prior art" a prima facie case of obviousness exists. In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976); In re Woodruff, 919 F.2d 1575, 16 USPQ2d 1934 (Fed. Cir. 1990). Additionally, Sunvold discloses the coating from 10-20 wt% of the finished coated kibble and the coating can comprise 1-10 wt% palatant (animal digest) [0058], which results in a finished coated kibble comprising 0.1-2 wt% palatant (animal digest). When combined with the disclosure that the finished coated kibble comprises less than 0.2 wt% of the vitamin component, the finished coated kibble of Sunvold comprises 0.1-2.2 wt% of palatant and vitamin component combined (PECb), which falls within the claimed range of 0.001-5 wt%. Regarding the claim language “palatable dog food” this language is deemed to be an intended use of the composition prepared by the claimed method. In method claims, a claimed intended use must result in a manipulative difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. MPEP 2111.02. Given that the pet food of Sunvold is identical to that of the presently claimed in terms of process, it meets the intended use of the claimed method. Additionally, Sunvold discloses the coating is applied to increase animal preference of the food which is considered to provide a palatable dog food [0039]. Regarding the order of steps, Sunvold does not disclose the order of coating with the fat, palatant and vitamin component. However, selection of any order of performing process steps is prima facie obvious in the absence of new or unexpected results. MPEP 2144.04 IV. C. Claim 18 is rejected under 35 U.S.C. 103 as being unpatentable over Sunvold (US 2010/0303978 A1) as applied to claim 11 above, and further in view of Yamka (US 2012/0289598 A1). Regarding claim 18, Sunvold discloses the dog food of claim 11, including the coating comprising animal digest and ascorbic acid. Sunvold does not disclose the ascorbic acid salts. Yamka, in the field of enhancing palatability of edible food compositions for companion animals (Abstract), discloses the companion animal may be a dog [0027]. Yamka discloses the food may comprise antioxidants to stabilize the food and increase shelf life [0105] and the antioxidant may be vitamin C, ascorbic acid, or can be administered as ascorbic acid phosphate salts and cholesteryl salt which will function in a vitamin C like activity after ingestion by the pet [0107]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to substituted the ascorbic acid phosphate salts or cholestryl salt of Yamka for the ascorbic acid of Sunvold because Yamka discloses the ascorbic acid salts will function with vitamin C (ascorbic acid) like activity after ingestion by the pet and the substitution of equivalents known for the same purpose (here to provide vitamin C activity) is obvious. MPEP 2144.06 II. Response to Arguments Applicant's arguments filed 01 July 2026 have been fully considered but they are not persuasive. Applicant argues Sunvold is concerned with improving stability of pet food by coating and the examples relate to vitamin A and vitamin E only. Vitamin C is only generically mentioned as a vitamin or antioxidant in a long list of vitamins and no examples in Sunvold relate to vitamin C. Remarks p3. This argument is not persuasive. Patents are relevant as prior art for all they contain. "The use of patents as references is not limited to what the patentees describe as their own inventions or to the problems with which they are concerned. They are part of the literature of the art, relevant for all they contain." In re Heck, 699 F.2d 1331, 1332-33, 216 USPQ 1038, 1039 (Fed. Cir. 1983) (quoting In re Lemelson, 397 F.2d 1006, 1009, 158 USPQ 275, 277 (CCPA 1968)). MPEP 2123 I. Therefore the lack of examples in Sunvold related to the inclusion of vitamin C does not negate Sunvold’s disclose of vitamin C as a vitamin that can be included in the pet food coating. Additionally, disclosed examples and preferred embodiments do not constitute a teaching away from a broader disclosure or nonpreferred embodiments. In re Susi, 440 F.2d 442, 169 USPQ 423 (CCPA 1971). MPEP 2132 II. Applicant argues Sunvold discloses vitamin is better preserved in an extruded pet food as opposed to a coated pet food. Applicant argues Sunvold teaches away from the use of vitamin E and therefore one of ordinary skill in the art would also have no proper reason, rationale, or motivation to apply the concept to other vitamins let alone vitamin C. Applicant argues Sunvold does not contemplate how to determine the quantity of vitamin C in the sample, therefore vitamin C is excluded from measurements. Remarks p4. This argument is not persuasive. Sunvold’s disclosure of the effectiveness of vitamin E in a coated pet food or not measuring the vitamin C value in the pet food does not discourage one of ordinary skill in the art from selecting vitamin C as an ingredient in the coating as disclosed by Sunvold. As discussed above, patents are relevant as prior art for all they contain. "The use of patents as references is not limited to what the patentees describe as their own inventions or to the problems with which they are concerned. They are part of the literature of the art, relevant for all they contain." In re Heck, 699 F.2d 1331, 1332-33, 216 USPQ 1038, 1039 (Fed. Cir. 1983) (quoting In re Lemelson, 397 F.2d 1006, 1009, 158 USPQ 275, 277 (CCPA 1968)). MPEP 2123 I. In the instant case, Sunvold discloses vitamin C as a vitamin that can be included in the pet food coating. Additionally, disclosed examples and preferred embodiments do not constitute a teaching away from a broader disclosure or nonpreferred embodiments. In re Susi, 440 F.2d 442, 169 USPQ 423 (CCPA 1971). MPEP 2132 II. Applicant argues the Examiner has participated in impermissible “obvious to try” analysis. Remarks pp4-5. This argument is not persuasive. As discussed above, patents are relevant as prior art for all they contain. "The use of patents as references is not limited to what the patentees describe as their own inventions or to the problems with which they are concerned. They are part of the literature of the art, relevant for all they contain." In re Heck, 699 F.2d 1331, 1332-33, 216 USPQ 1038, 1039 (Fed. Cir. 1983) (quoting In re Lemelson, 397 F.2d 1006, 1009, 158 USPQ 275, 277 (CCPA 1968)). MPEP 2123 I. In the instant case, Sunvold discloses vitamin C as a vitamin that can be included in the pet food coating. Conclusion 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CARRIE GLIMM whose telephone number is (571)272-2839. The examiner can normally be reached Monday-Thursday 10:30-6:30 ET. 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, Emily Le can be reached at 571-272-0903. 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. /C.L.G./Examiner, Art Unit 1793 /EMILY M LE/Supervisory Patent Examiner, Art Unit 1793
Read full office action

Prosecution Timeline

Show 25 earlier events
Sep 26, 2025
Response Filed
Sep 26, 2025
Response after Non-Final Action
Dec 03, 2025
Final Rejection mailed — §103
Mar 02, 2026
Request for Continued Examination
Mar 06, 2026
Response after Non-Final Action
Apr 01, 2026
Non-Final Rejection mailed — §103
Jul 01, 2026
Response Filed
Aug 07, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12714126
THERMALLY-RESISTANT WAX MATRIX PARTICLES FOR ENZYME ENCAPSULATION
3y 1m to grant Granted Aug 25, 2026
Patent 12696913
FEED COMPOSITIONS
6y 0m to grant Granted Aug 04, 2026
Patent 12653211
FILAMENTS MADE FROM MILK PROTEIN
5y 6m to grant Granted Jun 16, 2026
Patent 12616226
COMPOSITIONS AND METHODS FOR PET FOOD
4y 5m to grant Granted May 05, 2026
Patent 12604919
ALTERNATIVE DAIRY
2y 2m to grant Granted Apr 21, 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

9-10
Expected OA Rounds
26%
Grant Probability
40%
With Interview (+14.1%)
3y 11m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 78 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