Prosecution Insights
Last updated: April 19, 2026
Application No. 17/928,790

AEROSOL-GENERATING ARTICLE WITH IMPROVED COOLING PERFORMANCE AND FLAVOR PERSISTENCE AND METHOD OF PRODUCING THE SAME

Non-Final OA §103
Filed
Nov 30, 2022
Examiner
NGUYEN, PHU HOANG
Art Unit
1747
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kt&G Corporation
OA Round
3 (Non-Final)
65%
Grant Probability
Favorable
3-4
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 12/22/2025 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) 1-2, 5-12 is/are rejected under 35 U.S.C. 103 as being unpatentable over Jung et al. (KR 20200043165 with English translation) in view of Zuber et al. (U.S Pub. No. 20140305448), Jung et al. (CN112367864) and England et al. (U.S Pub. No. 20190116875). Regarding claim 1, Jung discloses an aerosol-generating article comprising: an aerosol-forming substrate part (210, fig. 2A); and a cooling part (220, fig. 2A) disposed downstream of the aerosol-forming substrate part and configured to cool an aerosol formed in the aerosol-forming substrate part, wherein a sheet-type material is disposed in a rolled or folded form in the cooling part (page 9), and includes a polysaccharide material (tobacco). Jung does not expressly disclose the cooling part comprises flavoring. Zuber discloses flavoring can be located in the aerosol-cooling element [0139]. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to add a flavoring to the cooling part of Jung as taught by Zuber. Jung (‘864) discloses wherein a plurality of holes are formed in the sheet-type material (perforated). Therefore it would be obvious to one of ordinary skill in the art at the time the invention was made to make the cooling section with plurality of holes. England discloses an aerosol-generating article with ventilation region for the cooling segment wherein the ventilation holes preferably have diameter between 0.1mm to 0.5mm overlapping with the claimed range. In case of overlapping ranges, it would have been obvious to one of ordinary skill in the art at the time the invention was made to pick the claimed range. 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 the claimed plurality of holes are the same as or obvious from the ventilation holes disclosed by England and Jung even though England and Jung do not explicitly disclose the punching process of these holes. Regarding claim 2, Jung discloses wherein the sheet-type material is pleated or folded in a longitudinal direction (page 9). Regarding claim 5, Zuber discloses wherein resistance to draw of the cooling part offers a low resistance and does not substantially affect the resistance to draw of the aerosol generating article [0114]. Therefore it would have been obvious to one of ordinary skill in the art at the time the invention was made to perform routine experimentation to arrive to the claimed range. Regarding claim 6, Jung discloses a first filter part (230, fig. 2) which is disposed downstream of the cooling part and has a hollow formed therein; and a second filter part (240, fig. 2) which is disposed downstream of the first filter part and in which a hollow is not formed. Regarding claim 7, Jung discloses a first filter part (230, fig. 2) which is disposed downstream of the cooling part and has a hollow formed therein; Jung discloses a second filter part (240, fig. 2) which is disposed downstream of the first filter part and in which a hollow is not formed instead of between the cooling part and the first filter part. Jung also discloses rearrangement of these filter parts in a different order (see fig. 4). Therefore, rearrangement of parts was held to be an obvious matter of design choice (see In re Japikse, 181 F.2d 1019, 86 USPQ 70 (CCPA 1960)). Regarding claim 8, Jung discloses a first filter part (420, fig. 4) which is disposed upstream of the cooling part and has a hollow formed therein; and a second filter part (440, fig. 4) which is disposed upstream of the cooling part and in which a hollow is not formed (see pages 10 and 13). Regarding claim 9, since the combination of Jung and Zuber taken together as a whole teaches the sheet-type material includes a polysaccharide and a flavoring (such as menthol). It would have been obvious to one of ordinary skill in the art at the time the invention was made to perform routine experimentation to arrive to a desired amount of flavoring in the material. Regarding claim 10, Zuber discloses the sheet-type material further includes plasticizer [0070]. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to perform routine experimentation to arrive to the claimed range. Regarding claim 11, Jung discloses a thickness of the sheet-type material is within 200 micrometer (page 9) overlapping with the claimed range of 150 micro m or less. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to pick the claimed range. Regarding claim 12, Zuber discloses menthol [0141] as a flavoring corresponding to the claimed a melting point of the flavoring is 80 °C or lower. Response to Arguments Applicant’s arguments filed 12/22/2025 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

Nov 30, 2022
Application Filed
Nov 30, 2022
Response after Non-Final Action
Mar 17, 2025
Non-Final Rejection — §103
Jun 20, 2025
Response Filed
Oct 18, 2025
Final Rejection — §103
Dec 22, 2025
Request for Continued Examination
Dec 27, 2025
Response after Non-Final Action
Dec 31, 2025
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

3-4
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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