Prosecution Insights
Last updated: April 19, 2026
Application No. 18/290,111

AEROSOL-GENERATING DEVICE AND OPERATING METHOD THEREOF

Non-Final OA §103
Filed
Nov 09, 2023
Examiner
MCKANE, ELIZABETH L
Art Unit
3991
Tech Center
3900
Assignee
Kt&G Corporation
OA Round
1 (Non-Final)
61%
Grant Probability
Moderate
1-2
OA Rounds
3y 5m
To Grant
87%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
135 granted / 221 resolved
+1.1% vs TC avg
Strong +26% interview lift
Without
With
+25.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
27 currently pending
Career history
248
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
43.0%
+3.0% vs TC avg
§102
18.7%
-21.3% vs TC avg
§112
22.9%
-17.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 221 resolved cases

Office Action

§103
Non-Final Office 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. 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 and 4-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over US 11,363,682 to Mironov et al. (hereinafter Mironov ) in view of JP 02 - 042318 to Nagasaka et al. (hereinafter Nagasaka ) and WO 2020/213916 to Cho et al. (hereinafter Cho ). -180975 343535 With respect to claims 1 , 2, 4, and 8-15 , Mironov teaches an aerosol generating device 100 including a housing 101 comprising an airflow passage (illustrated by arrows in Figure 1) ; a sensor unit 121 for detecting a puff of a user. See col.22, line 62 to col.23, line 3. Mironov further discloses that puffs may be measured by a change in inductance, determined by a control system. See col.29, lines 5-17. Mironov is silent to the sensor unit deforming in shape based on an airflow through the airflow passage or that a puff is detected based on the measured inductance value being maintain ed above a first predetermined threshold for a first predetermined time interval. 952500 689610 Nagasaka discloses a n air flow rate sensor 4 configured to deform in shape based on an airflow through airflow passage. The inductance of planar coils 6,7 changes depending on the displacement of the sensor. The sensor 4 is a panel that is configured to deform (deflect/displace) based on the airflow through the passage. Nagasaka further teaches a base 12,13 on which the panel and the inductor are disposed. As shown in Figure 1 above, the base comprises/includes a cantilever 10 protruding from an inner surface of the airflow passage. The base further includes a plurality of holes 1,2 and covering/enclosing a portion of the airflow passage. Cylindrical sensor chamber 3 , branches from the airflow passage so that the airflow enters and exits the sensor chamber from the airflow passage. A detection circuit determines the flow rate depending on the measured inductance, which is detected as a voltage difference. It would have been obvious to use the flow rate sensor of Nagasaka as the inductance sensor of Mironov, because Nagasaka teaches that operating resistance is small, measurement results are highly accurate, and the sensor is inexpensive. Cho teaches a method for counting pu ff s in an aerosol generator wherein a puff is detected based on a measured value being maintained above a first predetermined threshold for a first predetermined time interval and a second puff is detected based on the measured value being maintained above a second predetermined threshold for a second predetermined time interval . See Figure 12; paras [73-100]. Cho teaches that the puff detecting sensor may detect a flow change (para [73]) and the disclosed algorithm is applicable “regardless of the type of sensor mounted on the aerosol generating device 5.” See para [150]. Thus, it would have been obvious to a POSITA to apply the puff detecting algorithm of Cho to the combination of Mironov and Nagasaka as being a known and effective method of accurately detecting puffs in an aerosol generating device. Applying a known technique to a known device ready for improvement yields predictable results to a POSITA. See MPEP 2143 I. D. As to claim 5 , Mironov discloses the aerosol generating device may include a visual or auditory indicator. See col.18, lines 55-67. With respect to claim s 6 and 7 , Mironov teaches that on “detection of the start of a puff, the control system may be configured to supply power to the aerosol-generator” (heater). See col.7, lines 31-32 and col.15, lines 41-61. Thus, when the heater is activated, a puff is necessarily occurring. Allowable Subject Matter Claim 3 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: Cho describes measuring the predetermined value over various time intervals but does not teach or suggest that the second predetermined threshold is less than the first predetermined threshold, nor is there any teaching or suggestion to do so . Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to FILLIN "Examiner name" \* MERGEFORMAT ELIZABETH L MCKANE whose telephone number is FILLIN "Phone number" \* MERGEFORMAT (571)272-1275 . The examiner can normally be reached FILLIN "Work Schedule?" \* MERGEFORMAT Mon-Thu 6:30a-4:30p EST . 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, Patricia Engle can be reached at 571-272-6660 . 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. /ELIZABETH L MCKANE/ Specialist, Art Unit 3991
Read full office action

Prosecution Timeline

Nov 09, 2023
Application Filed
Feb 27, 2026
Non-Final Rejection — §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

1-2
Expected OA Rounds
61%
Grant Probability
87%
With Interview (+25.6%)
3y 5m
Median Time to Grant
Low
PTA Risk
Based on 221 resolved cases by this examiner. Grant probability derived from career allow rate.

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