Prosecution Insights
Last updated: April 18, 2026
Application No. 17/480,030

METHOD FOR PREPARING FLAVORFUL COMPOUNDS ISOLATED FROM BLACK LIQUOR AND PRODUCTS INCORPORATING THE FLAVORFUL COMPOUNDS

Non-Final OA §103
Filed
Sep 20, 2021
Examiner
NGUYEN, PHU HOANG
Art Unit
1747
Tech Center
1700 — Chemical & Materials Engineering
Assignee
R J Reynolds Tobacco Company
OA Round
5 (Non-Final)
65%
Grant Probability
Favorable
5-6
OA Rounds
3y 10m
To Grant
84%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allow Rate
450 granted / 691 resolved
At TC average
Strong +19% interview lift
Without
With
+18.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
56 currently pending
Career history
747
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
51.3%
+11.3% vs TC avg
§102
14.1%
-25.9% vs TC avg
§112
18.1%
-21.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 691 resolved cases

Office Action

§103
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 3/27/2026 has been entered. 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. Claim(s) 23, 26 and 28 is/are rejected under 35 U.S.C. 103 as being unpatentable over Fujisawa et al. (CA2940680) in view of Shannon et al. (U.S Pub. No. 20110081528). Regarding claims 23, 26 and 28, Even though product-by-process claims are limited by and defined by the process, determination of patentability is based on the product itself. The patentability of a product does not depend on its method of production. If the product in the product-by-process claim is the same as or obvious from a product of the prior art, the claim is unpatentable even though the prior product was made by a different process." In re Thorpe, 777 F.2d 695,698, 227 USPQ 964, 966 (Fed. Cir. 1985), (MPEP 2113). In this case, Fujisawa discloses a tobacco product comprising an acetic acid that is derived from tobacco [0042] [0082]. Fujisawa does not expressly disclose 4-vinyl-2methylphenol as flavorant compound. Shannon discloses well known flavorants such as acetic acid [0033] and 2-methyl-4-vinylphenol [0034]. Therefore, it would have been obvious to one of ordinary skill in the art the time the invention was made to use these flavorants in combination or as alternatives. Claim(s) 24-25 is/are rejected under 35 U.S.C. 103 as being unpatentable over Fujisawa et al. (CA2940680) in view of Shannon et al. (U.S Pub. No. 20110081528) as applied to claim 23 above and further in view of Hata (Pub. No. 20150292152). Regarding claim 24, Fujisawa does not expressly disclose the tobacco comprises vanillin. Hata disclose the tobacco product further comprises a second flavor compound such as vanillin (Table 1). Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to add vanillin to the tobacco product as taught by Hata for a desired taste. Regarding claim 25, Hata discloses the tobacco product is a smoking article [0071]. Claim(s) 27 and 29 is/are rejected under 35 U.S.C. 103 as being unpatentable over Fujisawa et al. (CA2940680) in view of Shannon et al. (U.S Pub. No. 20110081528) as applied to claim 23 above and further in view of Champion (U.S 3506446). Regarding claim 27, Fujisawa does not expressly disclose 3,5 dimethylcyclopentane-1,2dione (corresponding to the claimed 3,5 dimethylcyclopentenolone). Champion discloses well known flavorants such as acetic acid and 3,5 dimethylcyclopentane-1,2dione (column 6). Therefore, it would have been obvious to one of ordinary skill in the art the time the invention was made to use these flavorants in combination or as alternatives. Regarding claim 29, the combination of Fujisawa, Shannon and Champion taken together as a whole discloses/suggests the flavoran compound is a combination of 3,5-dimethylcyclopentenolone (column 6 of Champion) and 4-vinyl-2methylphenol ([0033-0034] of Shannon. Response to Arguments Applicant’s arguments filed 3/27/2026 have been considered but are moot in view of the new ground of rejection. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PHU H NGUYEN whose telephone number is (571)272-5931. The examiner can normally be reached M-F 9-5. 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, Michael H Wilson can be reached at 5712703882. 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. /PHU H NGUYEN/Examiner, Art Unit 1747
Read full office action

Prosecution Timeline

Sep 20, 2021
Application Filed
Mar 19, 2023
Non-Final Rejection — §103
Jun 23, 2023
Response Filed
Oct 19, 2023
Final Rejection — §103
Dec 20, 2023
Response after Non-Final Action
Jan 03, 2024
Examiner Interview (Telephonic)
Jan 03, 2024
Response after Non-Final Action
Jan 24, 2024
Request for Continued Examination
Jan 29, 2024
Response after Non-Final Action
Mar 22, 2024
Non-Final Rejection — §103
Jun 27, 2024
Response Filed
Sep 30, 2024
Final Rejection — §103
Jan 15, 2025
Response after Non-Final Action
Jan 15, 2025
Notice of Allowance
Mar 04, 2025
Response after Non-Final Action
Apr 17, 2025
Response after Non-Final Action
Apr 18, 2025
Response after Non-Final Action
Apr 28, 2025
Response after Non-Final Action
Jul 02, 2025
Response after Non-Final Action
Jul 03, 2025
Response after Non-Final Action
Jul 07, 2025
Response after Non-Final Action
Jul 07, 2025
Response after Non-Final Action
Jan 29, 2026
Response after Non-Final Action
Mar 27, 2026
Request for Continued Examination
Mar 30, 2026
Response after Non-Final Action
Apr 01, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12569432
AEROSOL GENERATOR
2y 5m to grant Granted Mar 10, 2026
Patent 12569003
PRE-ROLL FILLING SYSTEM
2y 5m to grant Granted Mar 10, 2026
Patent 12557846
ELECTRONIC VAPOUR PROVISION SYSTEM
2y 5m to grant Granted Feb 24, 2026
Patent 12543775
METHODS FOR REDUCING ONE OR MORE TOBACCO SPECIFIC NITROSAMINES IN TOBACCO MATERIAL
2y 5m to grant Granted Feb 10, 2026
Patent 12532911
SMOKING ARTICLE WITH FRONT-PLUG AND METHOD
2y 5m to grant Granted Jan 27, 2026
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
65%
Grant Probability
84%
With Interview (+18.7%)
3y 10m
Median Time to Grant
High
PTA Risk
Based on 691 resolved cases by this examiner. Grant probability derived from career allow rate.

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