Prosecution Insights
Last updated: April 19, 2026
Application No. 17/917,170

AEROSOL GENERATING DEVICE

Non-Final OA §103
Filed
Oct 05, 2022
Examiner
LE, TOBEY CHOU
Art Unit
1747
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kt&G Corporation
OA Round
3 (Non-Final)
29%
Grant Probability
At Risk
3-4
OA Rounds
3y 10m
To Grant
84%
With Interview

Examiner Intelligence

Grants only 29% of cases
29%
Career Allow Rate
7 granted / 24 resolved
-35.8% vs TC avg
Strong +55% interview lift
Without
With
+55.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
42 currently pending
Career history
66
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
52.2%
+12.2% vs TC avg
§102
21.2%
-18.8% vs TC avg
§112
18.7%
-21.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 24 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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 2025 September 29 has been entered. Claims 1-15 are pending. Drawings Figures 1A and 1B should be designated by a legend such as --Prior Art--, because the figures are described as “known” [applicant 14-15], and only that which is old is illustrated. See MPEP § 608.02(g). Corrected drawings in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. The replacement sheet(s) should be labeled “Replacement Sheet” in the page header (as per 37 CFR 1.84(c)) so as not to obstruct any portion of the drawing figures. If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 1-4, 8, 11-13, and 15 are rejected under 35 U.S.C. 103 as being unpatentable over Manca (US 20170280775 A1 cited on an IDS) in view of Illidge (WO 2021053214 A1) and Century (US 20110223116 A1). Claims 1 and 15: Manca teaches an aerosol generating device (fig. 1 and [65], #10) comprising: a housing (12) comprising mouthpiece (30) at an end (leftmost end of 12) thereof, the mouthpiece (30) being configured to come into contact with a mouth of a user [66]; a canister (18) disposed inside the housing (12) and storing a medium including nicotine [36] and a propellant [33], the canister (18) including an outlet ([35], opening between canister #18 and tubing section #20) through which the medium flows out [35]; a transfer tube (20) having a first end portion (rightmost end of 20) connected to the outlet (opening between canister #18 and transfer tube #20) and a second end portion (leftmost end of 20) connected to the mouthpiece (30), and configured to receive the medium from the canister (18) at the first end portion [67]; a first valve ([33], pump #22 can instead be a controllable one-way valve) arranged at the second end portion (leftmost end of 20) and configured to control discharge of the medium remaining in the transfer tube to the outside [33]; and a nozzle (24) configured to atomize the medium and eject an aerosol [66] when the first valve is open (aerosol can only be ejected when the first valve is open). Manca does not explicitly teach that the outlet is on a second side of the canister opposite to a first side of the canister that faces the mouthpiece, or that a direction in which the medium flows through the outlet is opposite to a direction in which the medium flows through the mouthpiece. Illidge teaches using an aerosol-generating device in an upright position (p. 23, lines 9-11), such that excess precursor medium can contained from leaking through a chamber outlet (p. 23, lines 11-13). Manca’s device can be used in any orientation [Manca 19] to yield expectation to succeed. One of ordinary skill would be motivated to use Manca’s device in an upright position. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the instant invention to use Manca’s device in an upright position, because doing so would help to contain excess precursor medium from leaking through the mouthpiece. Century teaches an aerosol generating device (title) comprising an outlet on a bottom side of a reservoir opposite to a top side of the reservoir [59], such that the fluid moves without trapping bubbles that would interfere with aerosolization [59]. Specifying that Manca’s outlet is on a bottom side of a reservoir would position Manca’s outlet on a second side of the canister that faces away from the mouthpiece. PNG media_image1.png 633 859 media_image1.png Greyscale It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the instant invention to move Manca’s outlet from facing towards the mouthpiece to facing away from the mouthpiece as motivated by Century, such that a direction in which the medium flows through the outlet is opposite to a direction in which the medium flows through the mouthpiece, because doing so would enable fluid to move through the outlet without trapping bubbles that would interfere with aerosolization. Claim 2: modified Manca teaches the aerosol generating device of claim 1, wherein the first valve ([33], controllable one-way valve) operates based on puff of the user ([56-57], a puff sensor can activate liquid delivery, which would require the first valve to open in order to deliver liquid). Claim 3: modified Manca teaches the aerosol generating device of claim 2, further comprising a puff detection sensor ([56-57], puff sensor) configured to detect the puff of the user, wherein the first valve ([33], controllable one-way valve) operates based on a result detected by the puff detection sensor ([56-57], the puff sensor can activate liquid delivery, which would require the first valve to open in order to deliver liquid). Claim 4: modified Manca teaches the aerosol generating device of claim 1, further comprising a second valve ([35], tube #20 can further comprise, i.e. the valves of [33 and 35] are different, a one-way valve to control liquid through the tube) configured to control transfer of the medium stored in the canister to the transfer tube (20) by adjusting opening and closing (the one-way valve controls fluid flow) of the outlet (outlet positioned at one-way valve which interfaces #18 and #20). Claim 8: modified Manca teaches the aerosol generating device of claim 1, wherein the transfer tube (fig. 1, #20) has a predetermined diameter and a predetermined length corresponding to an amount of aerosol generated per puff ([30], #20 conveys a liquid aerosol-forming substrate and therefore is dimensioned corresponding to an amount of aerosol generated per puff). Claim 11: modified Manca teaches the aerosol generating device of claim 1, wherein the nozzle (fig. 2 and [67], #24) includes an air-atomizing nozzle including an outdoor air passage (36) through which external air is introduced (air flows through 28 and 36). Claim 12: modified Manca teaches the aerosol generating device of claim 1, wherein the nozzle (fig. 2, #24) includes a passage (38) through which the medium passes, and the passage (38) has a curved portion (38 comprises curves). Claim 13: modified Manca teaches the aerosol generating device of claim 1, wherein the mouthpiece (fig. 2, #30) has a discharge hole (leftmost opening of 30) for discharging the aerosol to the outside, and the discharge hole (leftmost opening of 30) is arranged in a direction (dashed line) parallel to another direction (dashed line) in which the nozzle (24) ejects the medium. Claims 5-7 are rejected under 35 U.S.C. 103 as being unpatentable over Manca (US 20170280775 A1 cited on an IDS) in view of Illidge (WO 2021053214 A1) and Century (US 20110223116 A1) as applied to claim 4 in further view of Dunne (US 20120090603 A1). Claims 5-6: modified Manca teaches the aerosol generating device of claim 4. Modified Manca does not explicitly teach that the second valve is operated by the user, that the medium stored in the canister is transferred to the transfer tube in response to an operation of the user for the second valve to open the outlet, or that the second valve is movable between a first position in which the outlet is closed and a second position in which the outlet is opened. Dunne teaches an aerosol generating device (fig. 3 and [84], #110) comprising a first valve (170) and a second valve (106), wherein the second valve (106) is operated by the user ([75], the valve #106 is toggled by [87], a suction stroke), and a medium stored in a canister (105) is transferred to a transfer tube (168) in response to an operation of the user for the second valve to open an outlet (positioned at 106), wherein the second valve (106) is movable between a first position in which the outlet is closed and a second position in which the outlet (positioned at 106) is opened ([75], #106 opens and closes), such that the second valve can be normally closed in order to minimize liquid leakage [11]. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use, as Manca’s generic second valve, Dunne’s specific second valve operated by the user and movable between a first position in which the outlet is closed and a second position in which the outlet is opened, wherein the medium stored in the canister transferred to the transfer tube in response to an operation of the user for the second valve to open the outlet, because doing so would enable the second valve to be normally closed in order to minimize liquid leakage. Claim 7: modified Manca teaches the aerosol generating device of claim 5, further comprising a button ([56-57], on-off button) configured to control liquid delivery [57], wherein an amount of the medium transferred to the transfer tube is determined based on at least one of an operation time and an operation strength of the button ([57], a duration of activation during which liquid is delivered corresponds to an action like pressing the on-off button; the only two variables in pressing a button are a time of the press and a strength of the press), wherein the liquid delivery is controlled by operation of the second valve ([35], the one-way valve controls liquid flow towards the mouthpiece). Claims 9-10 and 14 are rejected under 35 U.S.C. 103 as being unpatentable over Manca (US 20170280775 A1 cited on an IDS) in view of Illidge (WO 2021053214 A1) and Century (US 20110223116 A1) as applied to claim 1 in further view of Baran (US 20040084050 A1). Claims 9-10 and 14: modified Manca teaches the aerosol generating device of claim 1. Modified Manca does not explicitly teach that the transfer tube is spirally wound on an outer peripheral surface of the canister, that at least a part of the transfer tube is in contact with an outer peripheral surface of the canister, or that the outer peripheral surface is between the first side of the canister and the second side of the canister. Baran teaches an aerosol generating device (title) comprising a transfer tube (fig. 50 and [185], #824) spirally wound on an outer peripheral surface of a cylinder (808), wherein at least a part of the transfer tube (824) is in contact with an outer peripheral surface of the cylinder (808), wherein the outer peripheral surface is between a first side of the cylinder (leftmost end of 808) and a second side of the cylinder (rightmost end of 808), such that the transfer tube can store a suitable dose of medication due to its length [185]. Manca’s canister (Manca fig. 1, #18) conveys pressurized [33] fluid and Baran’s canister (Baran fig. 50, #808) conveys pressurized fluid [185] to yield expectation to succeed. Moreover, changing the shape of the transfer tube from cylindrical to spiral would be an obvious matter of design choice absent persuasive evidence that the particular configuration is significant. See MPEP 2144.04(IV)(B): In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966). The courts have held that the configuration of the claimed disposable plastic nursing container was an obvious matter of choice absent persuasive evidence that the particular configuration of the claimed container was significant. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to reshape Manca’s transfer tube into being spirally wound on and in contact with an outer peripheral surface of the canister, wherein the outer peripheral surface is between the first side of the canister and the second side of the canister, because doing so would enable the transfer tube to store a suitable dose of liquid due to its length and would otherwise be a patentably indistinct change in shape. Response to Arguments Applicant’s arguments of 2025 September 29 have been carefully considered. Upon further search and consideration necessitated by applicant’s amendments, a new ground of rejection is made for claim 1 over Manca in view of Illidge and Century. Applicant argues (p. 8, [2-3]) that Manca’s pump #22 does not read on new limitations of the first side. However, Manca in view of Illidge and Century renders obvious an outlet on a second side of the canister, opposite to a first side of the canister, for the benefit of containing excess precursor from leakage and minimizing bubbles in the precursor. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Tobey C. Le whose telephone number is (703)756-5516. The examiner can normally be reached Mon-Thu 8:30-18:30 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, Michael H. Wilson can be reached on 571-270-3882. 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. /TOBEY C LE/Examiner, Art Unit 1747 /Michael H. Wilson/Supervisory Patent Examiner, Art Unit 1747
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Prosecution Timeline

Oct 05, 2022
Application Filed
Mar 18, 2025
Non-Final Rejection — §103
Jun 18, 2025
Response Filed
Jun 30, 2025
Final Rejection — §103
Sep 11, 2025
Examiner Interview Summary
Sep 11, 2025
Applicant Interview (Telephonic)
Sep 29, 2025
Request for Continued Examination
Oct 02, 2025
Response after Non-Final Action
Jan 27, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12588700
E-liquid Composition Comprising 1,3-Propanediol Below 50% by Weight of the Composition
2y 5m to grant Granted Mar 31, 2026
Patent 12303640
ADMINISTERING APPARATUS WITH DISPENSING DEVICE SYSTEM FOR DELIVERY OF COMBUSTIBLE MEDICAMENTS
2y 5m to grant Granted May 20, 2025
Study what changed to get past this examiner. Based on 2 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
29%
Grant Probability
84%
With Interview (+55.0%)
3y 10m
Median Time to Grant
High
PTA Risk
Based on 24 resolved cases by this examiner. Grant probability derived from career allow rate.

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