Prosecution Insights
Last updated: April 19, 2026
Application No. 18/612,052

SYSTEMS AND METHODS OF FILLING AND DRAINING PLUMBING FIXTURES

Non-Final OA §102§103
Filed
Mar 21, 2024
Examiner
CRANE, LAUREN ASHLEY
Art Unit
3754
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Kohler Co.
OA Round
1 (Non-Final)
57%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
89%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allow Rate
478 granted / 836 resolved
-12.8% vs TC avg
Strong +32% interview lift
Without
With
+31.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
17 currently pending
Career history
853
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
49.0%
+9.0% vs TC avg
§102
24.9%
-15.1% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 836 resolved cases

Office Action

§102 §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 . 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. Claim(s) 1, 2, 7-20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Quintana et al (US Patent 6,877,170 herein after Quintana). Regarding Claim 1, Quintana shows a plumbing assembly comprising: a tank (14); a bowl (11) in fluid communication with the tank; a re-fill assembly (34,36) fluidly coupled to the tank (Fig.2), the re-fill assembly having at least one re-fill assembly valve (34) and being configured to control a flow of water from the tank to the bowl (column 4 lines 1-7); at least one controller (26) operably coupled to the re-fill assembly (Fig.2; column 4 lines 30-40), the at least one controller configured to control the at least one re-fill assembly valve within the re-fill assembly (column 4 lines 30-40); and a first sensor (20) communicably coupled to the at least one controller (column 3 lines 10-15), the first sensor being configured to sense a water level within the bowl (fig.1; column 3 lines 19-22); wherein the at least one controller is configured to stop the flow of water responsive to the water level within the bowl satisfying a first threshold (column 4 lines 63-67- column 5 lines 1-4). Regarding Claim 2, Quintana shows the plumbing assembly of claim 1, further comprising a lid and seat (near 11, Fig.1) assembly coupled to the bowl (column 3 lines 21-23). Regarding Claim 7, Quintana shows the plumbing assembly of claim 1, further comprising a second sensor (16) disposed within the tank, the second sensor communicably coupled to the at least one controller and configured to sense a water level within the tank (column 3 lines 10-15). Regarding Claim 8, Quintana shows the plumbing assembly of claim 7, wherein the at least one controller is configured to determine a leak condition of the tank responsive to the water level within the tank satisfying a second threshold (column 4 lines 63-67-column 5 lines 1-2). Regarding claim 9, Quintana shows the plumbing assembly of claim 7, wherein the at least one controller is configured to determine a leak condition of the tank responsive to a decrease in the water level within the tank over a predetermined period of time (column 4 lines 63-67-column 5 lines 1-2). Regarding Claim 10, Quintana shows the plumbing assembly of claim 1, wherein the at least one controller is configured to control the at least one re-fill assembly valve (column 4 lines 35-40) within the re-fill assembly by adjusting a size of an orifice (either opening or closing the orifice) within the at least one re-fill assembly valve to control the flow of the water from the tank to the bowl. Regarding Claim 11, Quintana shows the plumbing assembly of claim 1, wherein the tank comprises a reservoir (40), the reservoir being structured to receive water (through pipe 43) from a water supply (column 5 lines 25-35). Regarding Claim 12, Quintana shows the plumbing assembly of claim 1, wherein the bowl comprises a ridge (located in the toilet bowl wall or under the rim) formed within a wall surrounding the bowl, and wherein the first sensor is structured to have shape that is complementary to a shape of the ridge (column 3 lines 18-23). Regarding Claim 13, Quintana shows a method for controlling a water level within a plumbing assembly, the method comprising: controlling, by a re-fill assembly (34, 35, 26), a flow of water from a tank to a bowl (column 4 lines 1-7), the re-fill assembly being coupled to the tank and the bowl being in fluid communication with the tank (Fig.2); controlling, by at least one controller (26) operably coupled to the re-fill assembly, at least one valve (34) within the re-fill assembly; sensing, by a first sensor (20) communicably coupled to the at least one controller (column 3 lines 10-14), a water level within the bowl (Fig.2); determining, by the at least one controller, the water level within the bowl satisfies a first threshold; and stopping, by the at least one controller, the flow of water to the bowl (column 4 lines 63-67- column 5 lines 1-4). Regarding Claim 14, Quintana shows the method of claim 13, wherein determining the water level within the bowl satisfies a first threshold comprises determining the water level exceeds the first threshold (column 4 lines 63-67- column 5 lines 1-4). Regarding Claim 15, Quintana shows the method of claim 13, wherein determining the water level within the bowl satisfies a first threshold comprises determining the water level is increasing over a predetermined period of time (column 4 lines 63-67- column 5 lines 1-4). Regarding Claim 16, Quintana shows the method of claim 13, wherein controlling the at least one valve within the re-fill assembly comprises adjusting a size of an orifice (either opening or closing the orifice) within the at least one valve (column 4 lines 34-40). Regarding Claim 17, Quintana shows the method of claim 13, wherein controlling the at least one valve (34) within the re-fill assembly comprises sending a signal to a solenoid (35), the solenoid being operably coupled to the at least one valve, to cause a change in operating status of the at least one valve (column 4 lines 33-40). Regarding Claim 18, Quintana shows the method of claim 13, further comprising filling, by a filling assembly (29; Fig.2) in fluid communication with each of the tank, the bowl, and the re-fill assembly, the tank with water from a water supply (28). Regarding Claim 19, Quintana shows the method of claim 18, further comprising sensing, by a second sensor (16) in communication with the at least one controller, a water level within the tank (column 3 lines 9-12). Regarding claim 20, Quintana shows the method of claim 19, further comprising determining, by the at least one controller, a leak condition of the tank responsive to a determination that the water level within the tank satisfies a second threshold (column 4 lines 63-67 – column 5 lines 1-2). 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) 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Quintana et al (US Patent 6,877,170) in view of Kim (US Patent 20210207352). Regarding Claim 3, Quintana shows the plumbing assembly of claim 2, but fails to show wherein the lid and seat assembly includes the at least one controller. Kim teaches a toilet the lid (120) and seat (110) assembly includes the at least one controller (150) (paragraph 21). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to include the lid and seat assembly includes the at least one controller in order to save space. Claim(s) 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Quintana et al (US Patent 6,877,170) in view of Yaoka et al (US Patent Publication 20190368180 herein after Yaoka). Quintana shows the plumbing assembly of claim 2, but fails to show wherein the lid (300) and seat (200) assembly comprises a bidet. Yaoka teaches a toilet wherein the lid and seat assembly comprises a bidet (473). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to include a bidet to provide extra cleaning for the user. Claim(s) 5 and 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Quintana et al (US Patent 6,877,170) in view of Sanderson (US Patent 5,036,553). Quintana shows the plumbing assembly of claim 1, but fails to show wherein the re-fill assembly is configured to operate according to a first mode and a second mode, the first mode corresponding to a first volume of water and the second mode corresponding to a second volume of water. Sanderson teaches a toilet wherein the re-fill assembly (62) is configured to operate according to a first mode (full flush) and a second mode (1/2 flush), the first mode corresponding to a first volume of water and the second mode corresponding to a second volume of water (column 3 lines 65-67 – column 4 lines 1-10). The second volume of water (1/2 flush) is less than the first volume of water (full flush) (column 4 lines 1-15). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to include a first mode and second mode in order to conserve water. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Hayashi et al (US Patent Publication 20210270025) is directed to the state of the art as a teaching of an electronic flush valve (12). Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAUREN ASHLEY CRANE whose telephone number is (571)270-5198. The examiner can normally be reached Mondays & Tuesdays 8 am - 4pm. 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, David Angwin can be reached at 571-270-3735. 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. /LAUREN A CRANE/ Primary Examiner, Art Unit 3754
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Prosecution Timeline

Mar 21, 2024
Application Filed
Feb 03, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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TILEABLE RECEPTOR
2y 5m to grant Granted Apr 14, 2026
Patent 12595649
FLUIDICS DEVICES FOR PLUMBING FIXTURES
2y 5m to grant Granted Apr 07, 2026
Patent 12596390
TEMPERATURE ADJUSTMENT METHOD FOR AN INTELLIGENT TOILET, AN ELECTRONIC DEVICE, A STORAGE MEDIUM, AND AN INTELLIGENT TOILET
2y 5m to grant Granted Apr 07, 2026
Patent 12590448
CONTROL SYSTEM AND A CONTROL METHOD OF INTELLIGENT TOILETS
2y 5m to grant Granted Mar 31, 2026
Patent 12584301
LAVATORY CARRIER ASSEMBLY WITH WASTE LINE ACCESS PORT
2y 5m to grant Granted Mar 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
57%
Grant Probability
89%
With Interview (+31.7%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 836 resolved cases by this examiner. Grant probability derived from career allow rate.

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