Prosecution Insights
Last updated: May 29, 2026
Application No. 18/404,913

WATER TREATMENT SYSTEM

Final Rejection §103
Filed
Jan 05, 2024
Priority
Jun 02, 2020 — JP 2020-096057 +2 more
Examiner
GURTOWSKI, RICHARD C
Art Unit
1773
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Wota Corp.
OA Round
3 (Final)
72%
Grant Probability
Favorable
4-5
OA Rounds
4m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
547 granted / 761 resolved
+6.9% vs TC avg
Strong +39% interview lift
Without
With
+38.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
30 currently pending
Career history
795
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
76.7%
+36.7% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
10.4%
-29.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 761 resolved cases

Office Action

§103
DETAILED ACTION For this Office action, Claims 1-21 are pending. 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 01 May 2026 has been entered. Response to Arguments Applicant’s arguments, see Page 2 of the Applicant Arguments/Remarks Made in an Amendment, filed 01 May 2026, with respect to the grounds of rejection of Claims 1-21 under 35 U.S.C. 112(b) have been fully considered and are persuasive. The grounds of rejection have been withdrawn. Applicant has amended the claims in a manner that addresses the issues of indefiniteness that required the grounds of rejection under 35 U.S.C. 112(b); therefore, upon further consideration, said grounds of rejection have been withdrawn. Please consult the Applicant Arguments/Remarks Made in an Amendment filed 01 May 2026 for more detail on why the grounds of rejection have been withdrawn. Applicant’s arguments with respect to claims 1, 2, 13, 17, 18 and 20 under 35 U.S.C. 103 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. Applicant has amended the claims in a manner that clarifies and narrows the scope of the claimed invention, in particular by requiring each of the first and third units to be configured as a building, a room, a box-like mount regardless of shape, or a case, having a connection port at a wall of the unit configured for external connection of at least one of drainage water, the dirty water, tap water, electricity, and communications from the connection port of the wall”. Applicant argues that the cited prior art does not disclose this limitation. The examiner respectfully agrees, and the grounds of rejection are therefore withdrawn. Further search and consideration yields new grounds of rejection addressing the new limitations, wherein the new grounds of rejection are detailed below. Since the applicant does not address these new grounds of rejection, said arguments are considered moot with respect to this argument and will not be addressed further at this time. Applicant's arguments filed 01 May 2026 have been fully considered but they are not persuasive. Applicant has amended independent Claim 1 to further include the limitation “the control device in the third unit switches channels and selects at least one of the filter devices to treat the dirty water” and further argues that the cited prior art of the previous Office action does not disclose said amended limitation. Upon further consideration, the examiner respectfully disagrees. Heiss discloses a control device that can select at least one of the filter devices to treat the dirty water by selectively choosing which bank of UF modules to use (Paragraph [0033]) and recirculating water through at least the reverse osmosis membranes (Paragraph [0041]). For these reasons, Heiss reads on the amended limitation. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1, 2, 13, 17, 18 and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Heiss, US Pat Pub. 2005/0139530, in view of Piascik et al. (herein referred to as “Piascik”, US Pat Pub. 2019/0169054) and Gupta et al. (herein referred to as “Gupta”, US Pat Pub. 2012/0021062). Regarding instant Claim 1, Heiss discloses a water treatment system (Abstract; Figure 1; water purifier) comprising: a first unit having a generation source of dirty water containing overall domestic drainage water and toilet sewage water (Abstract; Figure 1; Paragraph [0027]; at least water source 1, stationary pump 5 and portable submersible pump 3); a third unit having a dirty-water inlet fluidly connected to the first unit and further having a pump, filter devices, and a control device, and at least a disinfectant device (Figure 1; Paragraph [0032]; Paragraph [0033]; third unit in storage tank 14 with chlorine injection 15 [disinfectant device], pumps 17/20; filter devices in UF modules 18/19 [filter devices]; ACS/automatic control system is control device for entire system; inlet of storage tank 14 fluidly connected with water source 1/first unit); wherein the third unit is configured as a box-like mountain regardless of shape, having a connection port at a wall of the unit configured for external connection of at least the dirty water (Figure 2; Figure 3; Paragraph [0043]; at least an external connection for inputting dirty water to be treated), each of the first and third units includes a sensor and a valve, and is transportable independent of other units by closing the valve (Figure 1; Figure 2; Figure 3; Paragraph [0037]; Paragraph [0031]; Paragraph [0033]; Paragraph [0034]; Paragraph [0037]; analyzers 12, 13, 21-23, various valves and sensors through system; see that individual units such as vessel, UF modules could be removed if valves are closed based on the construction of the system), the control device performs centralized control of at least any of the valve, the pump, the disinfection device based on the sensor data from the sensor of each of the first to third to units (Abstract; Paragraph [0027]; Paragraph [0033]; various other paragraphs; ACS controls all such operations), the control device in the third unit switches channels and selects at least one of the filter devices to treat the dirty water (Figure 1; Paragraph [0033]; Paragraph [0041]; control device can select at least one of the filter devices to treat the dirty water by selectively choosing which bank of UF modules to use and recirculating water through at least the reverse osmosis membranes), the first and third units include a recycling means to treat and recycle the dirty water in a circulation (Figure 1; Paragraph [0033]; see flow path used for backwashing and flushing/cleaning regarding UF modules 17/18; sensors and quality parameters would allow for further recycling of water through UF modules as necessary), and the recycling means is configured to fluidly connect from the first unit to the filter devices in the third unit, and to fluidly connect from the third unit back to the first unit (Figure 1; Paragraph [0033]; see recycling loop that returns water from downstream of UF modules upstream of UF modules; first unit is fluid source, so returning water upstream is returning it to fluid source). However, Heiss is silent on the recycling means being further configured to fluidly connect back to the first unit including the generation source of the dirty water, to supply the recycled treated water for at least one of the toilet, washing or domestic water. Heiss is also silent on each of the first and third units being configured as a building, a room, a box-like mount regardless of shape, or a case, having a connection port at a wall of the unit configured for external connection of at least one of drainage water, the dirty water, tap water, electricity, and communications from the connection port of the wall. Piascik discloses a liquid waste treatment system in the same field of endeavor as the instant application, as it solves the mutual problem of treating liquid waste water (Abstract). Piascik further discloses the return of recycled treated water for a toilet in order to recycle and conserve water used for toilet services (Figure 10; Paragraph [0094]; see return line system 1022 to toilet 1010). It would have been obvious to one of ordinary skill in the art at the time of the effective filing date of the invention to modify the recycling means and first unit of Heiss to recycle the water to the generation source of the dirty water, to supply the recycled treated water for a toilet as taught by Piascik because Piascik discloses such recycling conserves water used for toilet services (Piacik, Paragraph [0094]). However, the combined references are silent on the first being configured as a building, a room, a box-like mount regardless of shape, or a case, having a connection port at a wall of the unit configured for external connection of at least one of drainage water, the dirty water, tap water, electricity, and communications from the connection port of the wall. Gupta discloses methods for the on-site production of chloramine and uses thereof in the same field of endeavor as the instant application, as it solves the mutual problem of treatment of water from domestic water systems (Abstract; Paragraph [0074]). Gupta further discloses a first unit in the form of a building that generates dirty water containing overall domestic drainage water and toilet sewage water having a connection port at a wall of the unit configured for external connection for at least dirty water in order to collect, discharge and treat domestic water (Paragraph [0074]; domestic water system treatment would imply domestic buildings such as houses). It would have been obvious to one of ordinary skill in the art at the time of the effective filing date of the invention to modify the first unit of Heiss to further being configured as a building having a connection port at a wall of the unit configured for external connection of dirty water as taught by Gupta because Gupta discloses such treatment could be used for domestic water and domestic water systems (Gupta, Paragraph [0074]). Regarding instant Claim 2, Claim 1, upon which Claim 2 is dependent, has been rejected above. Heiss further discloses wherein the recycling means is configured to fluidly connect from the first unit to the filter devices in the third unit, and to fluidly connect from the filter devices through a water tank in the third unit back to the first unit (Figure 1; Paragraph [0033]; see tank 24). Regarding instant Claim 13, Claim 1, upon which Claim 13 is dependent, has been rejected above. Heiss further discloses wherein the sensor data is the data required for water treatment, including at least water quality and volume of water (Heiss, Paragraph [0037]; Paragraph [0031]; Paragraph [0033]; Paragraph [0034]; Paragraph [0037]; sensors for flow plus various analyzers for water quality such as TOC and chlorine concentration). Regarding instant Claim 17, Claim 1, upon which Claim 17 is dependent, has been rejected above. Heiss further discloses comprising a fifth unit that includes a decomposition treatment device for further decomposing and treating concentrated dirty water and impurities generated in the third unit (Figure 1; Paragraph [0042]; ozone injection 41 downstream of UF modules). Regarding instant Claim 18, Claim 1, upon which Claim 18 is dependent, has been rejected above. Heiss further discloses wherein the dirty water is treated and recycled when a water supply and drainage infrastructure fails to function (Figure 1; Paragraphs [0032]-[0033]; Paragraph [0042]; water quality is monitored and recirculation occurs to meet certain water quality parameters/standards). Regarding instant Claim 20, Claim 1, upon which Claim 20 is dependent, has been rejected above. Heiss further discloses wherein the third unit is connected to the first unit to set a water quality condition and prepare an equipment, both required for water supply and drainage when drainage water is not flown into an infrastructure sewage system (Figure 1; Paragraphs [0018], [0033], [0042]; water quality parameters are monitored throughout the system, including parameter thresholds). Allowable Subject Matter Claims 3-12, 14-16, 19 and 21 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. Each of these claims is considered allowable, yet they are ultimately dependent on rejected Claim 1. A more detailed reasons for allowance will be provided upon allowance of the entire claim set. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RICHARD C GURTOWSKI whose telephone number is (571)272-3189. The examiner can normally be reached 9:00 am-5:30pm MT. 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, Benjamin Lebron can be reached at (571) 272-0475. 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. /RICHARD C GURTOWSKI/Primary Examiner, Art Unit 1773 05/13/2026
Read full office action

Prosecution Timeline

Jan 05, 2024
Application Filed
Dec 19, 2025
Non-Final Rejection mailed — §103
Feb 20, 2026
Response Filed
Mar 17, 2026
Final Rejection mailed — §103
May 01, 2026
Request for Continued Examination
May 05, 2026
Response after Non-Final Action
May 15, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12629636
WATER PURIFICATION APPARATUS, SYSTEM AND METHOD FOR CONTROLLNG AT LEAST ONE FLUID PROPERTY
3y 8m to grant Granted May 19, 2026
Patent 12612320
WASTEWATER PURIFICATION APPARATUS AND PROCESS FOR PURIFYING WASTEWATER
4y 5m to grant Granted Apr 28, 2026
Patent 12595192
SYSTEM AND METHOD FOR PRODUCING ALKALINE WATER HAVING PH STABILITY AND INCREASED MINERAL CONTENT
2y 0m to grant Granted Apr 07, 2026
Patent 12590021
System and Methods for Wastewater Treatment
3y 8m to grant Granted Mar 31, 2026
Patent 12590983
Fluid Device And Method For Controlling Fluid Device
2y 9m to grant Granted Mar 31, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

4-5
Expected OA Rounds
72%
Grant Probability
99%
With Interview (+38.9%)
2y 9m (~4m remaining)
Median Time to Grant
High
PTA Risk
Based on 761 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month