Prosecution Insights
Last updated: April 19, 2026
Application No. 18/538,210

HUMIDIFIER

Non-Final OA §102
Filed
Dec 13, 2023
Examiner
BUSHEY, CHARLES S
Art Unit
1776
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Electronics Inc.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
97%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
751 granted / 993 resolved
+10.6% vs TC avg
Strong +22% interview lift
Without
With
+21.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
25 currently pending
Career history
1018
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
38.3%
-1.7% vs TC avg
§102
29.2%
-10.8% vs TC avg
§112
26.8%
-13.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 993 resolved cases

Office Action

§102
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 . Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1, 2, 7, 13, 16, and 17 are rejected under 35 U.S.C. 102(a)(1) as being clearly anticipated by KR 0143844 B1. KR 0143844 B1 (Fig. 1; the entire English machine translation) discloses a humidifier including a water storage tank (110), a heater (121) within an outer wall (the walls to the outside of the water tank that contains the heater), with a floating valve (170, 171) that is located within an inner wall (the wall adjacent to the right of the floating valve), the center of the inner wall area that is spaced apart from the center of the outer wall area (claim 2), the floating valve controlling water flow from the overlying water supply tank (110) (claim 7) into the inner wall area of the water heating tank (claims 1, 13, and 16). The opening below the inner wall provides a connector to supply water to the heating area within the outer wall area of the tank, with an air flow pipe (sloped top of the heating tank that connects to discharge pipe 150) to discharge humidified air generated within the water heating tank wall (claim 17). Allowable Subject Matter Claims 3-6, 8-12, 14, 15, and 18-20 are 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 prior art of record fails to disclose or suggest the structural aspects of the invention as recited by instant claims 3, 5, 8, 14, and 18. Claims 4, 6, 9-12, 15, 19, and 20 would be allowable based upon their dependency on the noted allowable claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHARLES S BUSHEY whose telephone number is (571)272-1153. The examiner can normally be reached M-Th 6:30-5:00. 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, Jennifer Dieterle can be reached at 571-270-7872. 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. /C.S.B/1-10-26 /CHARLES S BUSHEY/ Primary Examiner, Art Unit 1776
Read full office action

Prosecution Timeline

Dec 13, 2023
Application Filed
Jan 10, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589368
GAS SUPPLY SYSTEM, MECHANICAL FOAMING SYSTEM, AND GAS SUPPLY METHOD
2y 5m to grant Granted Mar 31, 2026
Patent 12582939
Porous Liquid, Self-Replenishing Porous Liquid And Methods Of Making And Using The Same
2y 5m to grant Granted Mar 24, 2026
Patent 12582955
METHOD AND DESIGN OF HEAT EFFECTIVE ROTATED PACKED BED
2y 5m to grant Granted Mar 24, 2026
Patent 12575548
AIR-LIFTING VENTURI APPARATUS
2y 5m to grant Granted Mar 17, 2026
Patent 12558649
ATMOSPHERIC WATER GENERATION SYSTEMS AND METHODS UTILIZING MEMBRANE-BASED WATER EXTRACTION
2y 5m to grant Granted Feb 24, 2026
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
76%
Grant Probability
97%
With Interview (+21.6%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 993 resolved cases by this examiner. Grant probability derived from career allow rate.

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