Prosecution Insights
Last updated: April 19, 2026
Application No. 17/928,061

AEROSOL GENERATING DEVICE AND CONTROL METHOD FOR SAME

Non-Final OA §102§103
Filed
Mar 02, 2023
Examiner
SZEWCZYK, CYNTHIA
Art Unit
1741
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kt&G Corporation
OA Round
3 (Non-Final)
74%
Grant Probability
Favorable
3-4
OA Rounds
3y 0m
To Grant
84%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
692 granted / 939 resolved
+8.7% vs TC avg
Moderate +10% lift
Without
With
+9.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
40 currently pending
Career history
979
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
48.3%
+8.3% vs TC avg
§102
25.3%
-14.7% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 939 resolved cases

Office Action

§102 §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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 February 24, 2026 has been entered. Claim Rejections - 35 USC § 102 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim(s) 1, 9, 11, 15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by REEVELL (US 2017/0238610). Reevell teaches an aerosol generating device (100) comprising a heater (119) configured to heat an aerosol generating material (115); and a controller (109, para. 0114) configured to control supply of electric power to the heater, according to a predetermined temperature profile, wherein the controller is further configured to detect puffs of a user (para. 0018, 0049), determine whether a time interval between the detected puffs is less than a threshold value (T2, para. 0129), in response to determining that the time interval is less than the threshold, change the predetermined temperature profile to a first temperature profile that minimizes a decrease in temperature of the heater (para. 0129, 0132), and in response to determining that the time interval is greater than or equal to the threshold, change the predetermined temperature profile to a second temperature profile that accelerates the decrease in temperature of the heater (para. 0129-0130). Regarding claim 9, Reevell teaches a memory configured to store puff pattern data corresponding to the time interval between the puffs that are detected, wherein the controller is further configured to load the puff pattern data stored in the memory, and change the predetermined temperature profile based on the puff pattern data (para. 0114). Regarding claim 11, Reevell teaches a method performed by an aerosol generating device for controlling the aerosol generating device comprising controlling supply of electric power to a heater of the aerosol generating device according to a predetermined temperature profile (para. 0114); detecting puffs of a user (para. 0018, 0049); determining whether a time interval between the detected puffs is less than, or greater than or equal to, a threshold value(T2, para. 0129); in response to determining that the time interval is less than the threshold, changing the predetermined temperature profile to a first temperature profile that minimizes a decrease in temperature of the heater (para. 0129, 0132); and in response to determining that the time interval is greater than or equal to the threshold, change the predetermined temperature profile to a second temperature profile that accelerates the decrease in temperature of the heater(para. 0129-0130). Regarding claim 15, see the discussion of claim 9 above. Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim(s) 1-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over ALARCON et al. (US 2016/0057811) in view of REEVELL (US 2017/0238610). Alarcon teaches an aerosol generating device comprising a heater (146) configured to heat an aerosol generating material; and a controller (170) configured to control supply of electric power to the heater, according to a predetermined temperature profile, wherein the controller is further configured to detect puffs of a user, and change the predetermined temperature profile based on the detected puffs (para. 0048, 0075). Alarcon is silent to determining a time interval between the detected puffs. Reevell teaches an aerosol generating device (100) comprising a heater (119) configured to heat an aerosol generating material (115); and a controller (109, para. 0114) configured to control supply of electric power to the heater, according to a predetermined temperature profile, wherein the controller is further configured to detect puffs of a user (para. 0018, 0049), determine whether a time interval between the detected puffs is less than a threshold value (T2, para. 0129), in response to determining that the time interval is less than the threshold, change the predetermined temperature profile to a first temperature profile that minimizes a decrease in temperature of the heater (para. 0129, 0132), and in response to determining that the time interval is greater than or equal to the threshold, change the predetermined temperature profile to a second temperature profile that accelerates the decrease in temperature of the heater (para. 0129-0130). It would have been obvious to one of ordinary skill in the art to modify the controller of Alarcon to control the operation of the aerosol generating device based on a time interval between the detected puffs as taught by Reevell because Alarcon teaches that the controller can be modified to track multiple types of information length of puffs, amount of air flow over the coil, changes in air flow throughout the length of a puff, and other information as would be known to one of skill in the art (para. 0075). Regarding claim 2, Alarcon teaches the controller is further configured to, based on the time interval between the puffs being less than a threshold value, control the supply of electric power by following a target temperature of the predetermined temperature profile at a second feedback control speed greater than a predetermined first feedback control speed (para. 0073-0074). Regarding claim 3, Alarcon teaches the controller is further configured to, based on the time interval between the puffs being greater than or equal to the threshold value, control the supply of electric power by following the target temperature of the predetermined temperature profile at a third feedback control speed less than the pre- determined first feedback control speed (para. 0073-0074). Regarding claim 4, Alarcon teaches the controller comprises a proportional-integral-derivative (PID) control module configured to follow a target temperature of the predetermined temperature profile (para. 0063), and is further configured to change at least one gain value of the PID control module according to the time interval between the puffs (para. 0067). Regarding claim 5, Alarcon teaches the controller is further configured to, based on the time interval between the puffs being less than a threshold value, control the supply of electric power by following a target temperature corresponding to a time t-1 ahead of a time t in the predetermined temperature profile in which a target temperature according to the time t is set (para. 0073-0074). Regarding claim 6, Alarcon teaches the controller is further configured to, based on the time interval between the puffs being greater than or equal to the threshold value, control the supply of electric power by following a target temperature corresponding to a time t+1 later than the time t (para. 0073-0074). Regarding claim 7, Alarcon teaches the controller is further configured to change the predetermined temperature profile from a time of an (N+1) puff, based on a time interval between consecutive puffs among a first puff to an Nt puff, wherein N is a natural number of 2 or more (para. 0075). Regarding claim 8, Alarcon teaches the controller is further configured to change the predetermined temperature profile from a time of a fourth puff, based on an average time interval of a first-time interval and a second time interval, the first-time interval being between the first puff and a second puff ,and the second time interval being between the second puff and a third puff (para. 0075). Regarding claim 9, Alarcon teaches a memory configured to store puff pattern data corresponding to the time interval between the puffs that are detected, wherein the controller is further configured to load the puff pattern data stored in the memory, and change the predetermined temperature profile based on the puff pattern data (para. 0039). Regarding claim 10, Alarcon teaches the controller is configured to control the supply of electric power to the heater to reach a changed target temperature in the predetermined temperature profile (para. 0075). Regarding claim 11, Alarcon teaches a method performed by an aerosol generating device for controlling the aerosol generating device, the method comprising controlling supply of electric power to a heater of the aerosol generating device according to a predetermined temperature profile (para. 0048, 0076); detecting puffs of a user (para. 0048, 0075); and changing the predetermined temperature profile based on a time interval between the detected puffs (0048, 0075). Alarcon is silent to determining a time interval between the detected puffs. Reevell teaches an aerosol generating device (100) comprising a heater (119) configured to heat an aerosol generating material (115); and a controller (109, para. 0114) configured to control supply of electric power to the heater, according to a predetermined temperature profile, wherein the controller is further configured to detect puffs of a user (para. 0018, 0049), determine whether a time interval between the detected puffs is less than a threshold value (T2, para. 0129), in response to determining that the time interval is less than the threshold, change the predetermined temperature profile to a first temperature profile that minimizes a decrease in temperature of the heater (para. 0129, 0132), and in response to determining that the time interval is greater than or equal to the threshold, change the predetermined temperature profile to a second temperature profile that accelerates the decrease in temperature of the heater (para. 0129-0130). It would have been obvious to one of ordinary skill in the art to modify the controller of Alarcon to control the operation of the aerosol generating device based on a time interval between the detected puffs as taught by Reevell because Alarcon teaches that the controller can be modified to track multiple types of information length of puffs, amount of air flow over the coil, changes in air flow throughout the length of a puff, and other information as would be known to one of skill in the art (para. 0075). Regarding claim 12, see the discussions of claims 2 and 3 above. Regarding claim 13, see the discussion of claim 4 above. Regarding claim 14, see the discussions of claims 5 and 6 above. Regarding claim 15, see the discussion of claim 9 above. Response to Arguments Applicant’s arguments with respect to claim(s) 1-15 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CYNTHIA SZEWCZYK whose telephone number is (571)270-5130. The examiner can normally be reached Mon-Fri 10 am - 6 pm. 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, Alison Hindenlang can be reached at 571-270-7001. 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. /CYNTHIA SZEWCZYK/ Primary Examiner, Art Unit 1741
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Prosecution Timeline

Mar 02, 2023
Application Filed
May 03, 2025
Non-Final Rejection — §102, §103
Aug 07, 2025
Response Filed
Nov 19, 2025
Final Rejection — §102, §103
Feb 04, 2026
Applicant Interview (Telephonic)
Feb 04, 2026
Examiner Interview Summary
Feb 24, 2026
Request for Continued Examination
Mar 03, 2026
Response after Non-Final Action
Mar 07, 2026
Non-Final Rejection — §102, §103 (current)

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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
74%
Grant Probability
84%
With Interview (+9.9%)
3y 0m
Median Time to Grant
High
PTA Risk
Based on 939 resolved cases by this examiner. Grant probability derived from career allow rate.

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