Prosecution Insights
Last updated: October 04, 2026
Application No. 18/569,127

A CLEANING APPARATUS AND CLEANING SYSTEM

Non-Final OA §103§112
Filed
Dec 11, 2023
Priority
Jun 09, 2021 — NE 777044 +2 more
Examiner
SOTO, CHRISTOPHER ASHLEY
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Summit Building Wash Technologies Limited
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
2m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
68 granted / 129 resolved
-17.3% vs TC avg
Strong +27% interview lift
Without
With
+27.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
33 currently pending
Career history
181
Total Applications
across all art units

Statute-Specific Performance

§103
50.6%
+10.6% vs TC avg
§102
23.0%
-17.0% vs TC avg
§112
23.9%
-16.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 129 resolved cases

Office Action

§103 §112
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 . Election/Restrictions The amendment of 02/20/2026 broadens the scope of the claims and the previous restriction/election is no longer necessary. Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the “portable winching member” of claim 12, and the “portable winching member” of claim 14, must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Objections Claims 1 and 12 are objected to because of the following informalities: “suitable for cleaning a surface of a structure” and “relative to the surface of a structure,”. The subsequent “structure” should be “the structure” to avoid an antecedent error, as seen in claims 1 and 12. “a cleaning apparatus as claimed in claim 1and a portable”, and should be “a cleaning apparatus as claimed in claim 1 and a portable”, for clarity. Appropriate correction is required. Claim 31 is objected to because of the following informalities: “each wheel relative to the cleaning element ”, and should be “each wheel relative to the cleaning element.”, for clarity. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 6, 12-14, 28, and 31 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 6, which depends on claim 1, recites: “wherein comprising two pairs of electric ducted fans, with one electric ducted each fan of each pair positioned at each end of the carriage. Claim 1 recites: “at least a pair of electric ducted fans”. As claimed, it is unclear if the “two pairs of electric ducted fans” includes the pair introduced in claim 1. For examination purposes, the two pairs of fans required by claim 6 includes the pair introduced in claim 1. Claim 12 recites: “A cleaning system comprising a cleaning apparatus as claimed in claim 1 and a portable winching member”, and as claimed, it is unclear if claim 12 is meant to depend on claim 1 or an independent claim since “a cleaning apparatus” has already been introduced in claim 1. For examination purposes, claim 12 has been construed as “A cleaning system comprising the cleaning apparatus as claimed in claim 1 and a portable winching member”. Claim 14, which depends on claim 12, recites: “a portable winching member”, Claim 12 introduces “a portable winching member” and it is unclear they’re referring to the same or different structure. For examination purposes, both portable winching members have been construed as different elements. Claim 28 was previously canceled in the claims submitted on 12/11/2023. The claims submitted on 02/20/2026 introduced claim 28 as “new”. It is unclear whether the claim was numbered 28 by accident or the claim was meant to be canceled. Claim 28 will be examined, nonetheless. Claim 31 recites: “31. (New) The apparatus as claimed in claim 31”. It is unclear which claim 31 is supposed to depend on. For examination purposes, claim 31 has been construed to depend on claim 1. 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. Claims 1-6, 8, 10, 12-18, and 32 are rejected under 35 U.S.C. 103 as being unpatentable over Simonette (US 20090044833 A1) and Wang (US 20030106176 A1). Referring to claim 1: Simonette teaches an unmanned cleaning apparatus (2 Fig. 1; Abstract) suitable for cleaning a surface of a structure (4 Fig. 1) comprising: a carriage (carriage of 1000 shown in Figs. 9-11) adapted to be moved in upward and downward directions relative to the surface of a structure, a cleaning element (1010 Figs. 9-11; “The washing panels 1010 may be brushes, flaps, fabric, polymer, natural fiber, sheets or the like.” [0074]) rotatably mounted on the carriage that in use rotates about a substantially horizontal axis (shown in Fig. 9), the cleaning element being configured to contact the surface, at least a pair of support members (1002, 1008 Figs. 9-11) mounted on the carriage to support the apparatus against the surface, at least a pair of electric ducted fans (“one or more thrusters directing a platform against a vertical surface.” [0003]; “As the length of the blades increases, more thrusters would be (symmetrically) spaced along the length of the blades 1026 to stabilize the length of the washing blades” [0072]), the electric ducted fans being battery powered (“Battery operated electrical systems may be used” [0076]) and operable independently (“the battery would be a back-up system in case of power outages or disconnection of the cable.” [0076]) of any power source external to the cleaning apparatus, and together the pair of fans provide thrust to the carriage in a direction toward (“one or more thrusters directing a platform against a vertical surface.” [0003]) the surface being cleaned to stabilize the apparatus against the surface being cleaned when in use; a motor (“The at least one first motor may both drive washing elements and provide winch action to raise and lower and horizontally shift the washing platform along the vertical surface.” [0020]) that in use is operable remotely to rotate the cleaning element (1010; “The washing panels 1010 may be brushes, flaps, fabric, polymer, natural fiber, sheets or the like.” [0074]) about its horizontal axis across the surface being cleaned; and a spray device (“wherein the liquid applicator is selected from the group consisting of brushes, rollers and sprays.” Claim 3) that is mounted on (“a housing having a liquid application cleaning system therein” [0046]) the carriage that in use spray water towards ([0040]) the cleaning element and the surface of the structure being cleaned. But is silent on the spray delivering device specifically being a boom and specifically providing a plurality of spaced apart nozzles; and the electric ducted fan of each pair positioned at each end of the carriage. Wang in an analogous apparatus teaches the spray delivering device specifically being a boom (23 Fig. 3) and specifically providing a plurality of spaced apart nozzles (“A water tube 23 is provided at the upper side of the front side wall of the washing device 20. A plurality of small apertures can be evenly provided on the tube wall of the water tube 23 for spraying water toward the front side of the roller 21” [0024]); and the similar configuration electric ducted fan (220 Fig. 3; “electric propeller fans 220” [0024]) of each pair positioned at each end of the similar configuration carriage (carriage of 20). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the spraying boom as taught by Wang for the purpose of having a spraying device capable of spraying in a wide area. It also would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the fan positions as taught by Wang for the purpose of, as it is well known in the art, providing stability and balancing of forces. Referring to claim 2: Simonette as modified teaches the apparatus as claimed in claim 1, further including at least one suspension member (“The system also includes a vertical motion motivator. The vertical motion motivator may be a series of winches, pulleys, cables, caterpillar drives, and other systems that can elevate and lower the platform as needed.” [0039]) positioned proximate the top side of the carriage (shown in Figs. 5b, 5c, 5d), which suspension member in use is connected to a winch line (524 Figs. 5b, 5c, 5d), which line, in use connects the apparatus to a winch (“cable connector 530 attached to cable 524 which is connected to a winch (not shown) or secured point on the roof (not shown).” [0064]) that moves the carriage in an upward or downward direction (“to raise and lower and horizontally shift the washing platform along the vertical surface.” [0020]) as required. Referring to claim 3: Simonette as modified teaches the apparatus as claimed in claim 1, wherein each pair of support members (1002, 1008 Figs. 9-11) comprises a pair of wheels (shown in Figs. 9-11) mounted on the carriage (carriage of 1000 shown in Figs. 9-11). Referring to claim 4: Simonette as modified teaches the apparatus as claimed in claim 3, comprising two pairs of wheels (1002, 1008 Figs. 9-11) mounted on the carriage (carriage of 1000 shown in Figs. 9-11). Referring to claim 5: Simonette as modified teaches the apparatus as claimed in claim 4 wherein the wheels (1002, 1008 Figs. 9-11) are mounted proximate each corner (shown in Fig. 9) of the carriage (carriage of 1000 shown in Figs. 9-11). Referring to claim 6: Simonette as modified teaches the apparatus as claimed in claim 1, comprising the plurality of electric ducted fans (220 Fig. 3 of Wang), with one electric ducted fan of each pair positioned at each end of the carriage (carriage of 20 of Wang). But is silent on specifically being two pairs of electric ducted fans. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the two pairs of electric ducted fans for the purpose of having sufficient thrust according to the width/ size of the carriage, and since it has been held that mere duplication of the essential working parts of a device involves only routine skill in the art. MPEP 2144.04(VI)(B) Referring to claim 8: Simonette as modified teaches the apparatus as claimed in claim 1 but is silent on wherein the pair of electric ducted fans provide a combined thrust of at least 5% the weight of the cleaning apparatus. Per MPEP 2143-E, choosing from a finite number of identified predictable solutions, with a reasonable expectation of success supports a conclusion of obviousness. In the instant case, the finite number of identified predictable solutions are: sufficient thrust or insufficient thrust; further, the prior art teaches sufficient thrust. Therefore, modifying the apparatus of Simonette as modified to provide a combined thrust of at least 5% the weight of the cleaning apparatus, can easily be made without any change in the operation of the apparatus of Simonette as modified with reasonable expectations of success. Therefore, it would have been obvious to have modified the apparatus of Simonette as modified to provide a combined thrust of at least 5% the weight of the cleaning apparatus for the purpose of applying sufficient thrust capable of fixing the apparatus as intended while minimizing the energy required in doing so. Referring to claim 10: Simonette as modified teaches the apparatus as claimed in claim 1, wherein the cleaning element (1010 Figs. 9-11; “The washing panels 1010 may be brushes, flaps, fabric, polymer, natural fiber, sheets or the like.” [0074]) is a rotatable brush. Referring to claim 12: Simonette as modified teaches a cleaning system (2 and 6 Fig. 1; Abstract) comprising a cleaning apparatus (2 Fig. 1; Abstract) as claimed in claim l and a portable winching member (6 Fig. 1; “winch” [0051]) that in use is configured to winch the cleaning apparatus (2 Fig. 1; Abstract) up and down a surface being cleaned, the winch member (6 Fig. 1; [0051]) in use being positioned on a surface above the surface being cleaned by the cleaning apparatus (2 Fig. 1; Abstract). Referring to claim 13: Simonette as modified teaches the cleaning system as claimed in claim 12, wherein the portable winching member (6 Fig. 1; “winch” [0051]) is connected to roof rigging or a roof mounted lifting device above the surface being cleaned by the cleaning apparatus. Referring to claim 14: Simonette as modified teaches the cleaning system as claimed in claim 12, wherein the cleaning apparatus (2 Fig. 1; Abstract) further includes a portable winching member (“An at least one first motor is provided on a moving carriage that contains the washing instrumentality. The at least one first motor may both drive washing elements and provide winch action to raise and lower and horizontally shift the washing platform along the vertical surface” [0020]) that in use is configured to winch the cleaning apparatus up and down a surface being cleaned, the winch member in use being positioned on a surface above the surface being cleaned by the cleaning apparatus (2 Fig. 1; Abstract). Referring to claim 15: Simonette as modified teaches the apparatus of claim 1 further comprising: at least a pair of lateral members (1004 “pivoting arms” [0072]) configured and adapted to support the movement of the carriage (carriage of 1000 shown in Figs. 9-11) across the structure surface when in use. Referring to claim 16: Simonette as modified teaches the apparatus of claim 15, wherein each lateral member (1004 “pivoting arms” [0072]) comprises a pivoting arm (1004 “pivoting arms” [0072]) that extends outwardly from the carriage (carriage of 1000 shown in Figs. 9-11). Referring to claim 17: Simonette as modified teaches the apparatus of claim 16, wherein each arm (1004 “pivoting arms” [0072]) at its distal end includes an auxiliary movement member (1002 Figs. 9-11). Referring to claim 15: Simonette as modified teaches the apparatus of claim 1 further comprising: at least a pair of lateral members (P1 and P2 Fig. 1-A inserted below on each side of 1000) configured and adapted to support the movement of the carriage (carriage of 1000 shown in Figs. 9-11) across the structure surface when in use. PNG media_image1.png 574 418 media_image1.png Greyscale Referring to claim 18: Simonette as modified teaches the apparatus of claim 15 above, wherein the apparatus comprises at least two pairs of lateral members (P1 and P2 Fig. 1-A inserted above on each side of 1000). Referring to claim 32: Simonette as modified teaches the apparatus as claimed in claim 6, wherein each fan (220 Fig. 3 of Wang) at each end of the carriage (carriage of 20 of Wang) is in a spaced apart arrangement from an adjacent fan (shown in Fig. 3 of Wang) at the same end, about the horizonal axis (shown in Figs. 3 and 4 of Wang) of the cleaning element. Claim 28 is rejected under 35 U.S.C. 103 as being unpatentable over Simonette (US 20090044833 A1) and Wang (US 20030106176 A1), as applied above in claim 1, and in further view of Jorgensen (US 4962734 A). Referring to claim 28: Simonette as modified teaches the apparatus as claimed in claim 1, wherein each electric ducted fan (220 Fig. 3; “electric propeller fans 220” [0024] of Wang) is driven by a motor (“Fan blades 1026 and a motor 1028 to drive the blades are shown” [0071] of Simonette). Simonette teaches the use of a battery (“Battery operated electrical systems may be used” [0076]) which are commonly used with direct current, and does not disclose the use of an inverter. Nevertheless, Simonette as modified is silent on the fan motor specifically of being direct current (DC). Jorgensen teaches a similar configuration fan motor specifically of being direct current (DC) (“The fan is the rotor of an electrically driven, brushless DC motor.” Col. 2, lines 18-19). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the DC motors as taught by Jorgensen for the purpose of, as it is well known in the art, having the adequate electrical system configured to operate the apparatus accordingly. Claim 29 is rejected under 35 U.S.C. 103 as being unpatentable over Simonette (US 20090044833 A1) and Wang (US 20030106176 A1), as applied above in claim 1, and in further view of Lange (US 20140109932 A1). Referring to claim 29: Simonette as modified teaches the apparatus as claimed in claim 1, further comprising a shroud that covers the carriage (“The platform may be open, covered, of enclosed, with only those externally necessary elements (cleaning functions and thruster functions and motion functions) external to an enclosing component for the system.” [0038]) and is configured to prevent the spraying of residual water away from the cleaning apparatus. But is silent on specifically being on a rear side. Lange in an analogous apparatus teaches a similar configuration cover (108 Fig. 8) specifically on a rear side (shown in Figs. 23, 26, and 27). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the rear side covering shroud as taught by Lange for the purpose of minimizing the outward splash from the neighboring objects/ pedestrians during the cleaning process. Claims 30 and 31 are rejected under 35 U.S.C. 103 as being unpatentable over Simonette (US 20090044833 A1) and Wang (US 20030106176 A1), as applied above in claim 1, and in further view of MASUZAKI (JP H10117980 A). Referring to claim 30: Simonette as modified teaches the apparatus as claimed in claim 1, wherein the position of the support members (1002 Figs. 9-11) is adjustable relative (via 1004 “pivoting arms” [0072]) to the cleaning element and surface being cleaned. But is silent on specifically each support member is adjustable in specifically a forward and aft position relative to the cleaning element. MASUZAKI in an analogous apparatus teaches each of the similar configuration support member (10 Fig. 4) is adjustable in specifically a forward and aft position (“toward the respective outer wall surface 6 on, it is configured so as to be retractable” [0013]) relative to the similar configuration cleaning element (2 Fig. 4). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the adjustable member configuration as taught by MASUZAKI for the purpose of furthering the ability to adjust the spacing between the carriage and the surface to be cleaned. Referring to claim 31: Simonette as modified teaches the apparatus as claimed in claim 31, but is silent on wherein each support member is mounted on an adjustable depth track that is configured to allow the forward and aft movement of each wheel relative to the cleaning element. MASUZAKI in an analogous apparatus teaches each wherein each support member (10 Fig. 4) is mounted on an adjustable depth track (11 Fig. 4) that is configured to allow the forward and aft movement (“toward the respective outer wall surface 6 on, it is configured so as to be retractable” [0013]) of each wheel relative to the cleaning element. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the apparatus of Simonette with the adjustable depth track configuration as taught by MASUZAKI for the purpose of furthering the ability to adjust the spacing between the carriage and the surface to be cleaned. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTOPHER SOTO whose telephone number is (571)272-8172. The examiner can normally be reached Monday-Friday, 8a.m. - 5 p.m.. 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, Monica Carter can be reached at 571-272-4475. 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. CHRISTOPHER SOTO Examiner Art Unit 3723 /CHRISTOPHER SOTO/Examiner, Art Unit 3723 /MONICA S CARTER/Supervisory Patent Examiner, Art Unit 3723
Read full office action

Prosecution Timeline

Dec 11, 2023
Application Filed
Sep 16, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

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Prosecution Projections

1-2
Expected OA Rounds
53%
Grant Probability
80%
With Interview (+27.2%)
2y 12m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 129 resolved cases by this examiner. Grant probability derived from career allowance rate.

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