Prosecution Insights
Last updated: October 04, 2026
Application No. 18/096,864

SURFACE CLEANING ATTACHMENT SYSTEM

Final Rejection §103
Filed
Jan 13, 2023
Examiner
FORDJOUR, SARAH AKYAA
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Carpet Cleaner America LLC
OA Round
4 (Final)
52%
Grant Probability
Moderate
5-6
OA Rounds
0m
Est. Remaining
78%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
74 granted / 142 resolved
-17.9% vs TC avg
Strong +26% interview lift
Without
With
+25.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
38 currently pending
Career history
195
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
58.0%
+18.0% vs TC avg
§102
23.9%
-16.1% vs TC avg
§112
13.4%
-26.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 142 resolved cases

Office Action

§103
DETAILED ACTION Surface Cleaning Attachment System 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 . Response to Amendment The amendment filed 05-29-2026 has been entered. Claims 1-22 are currently pending and have been examined. The previous rejection has been updated due to applicant’s amendments. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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) 1,3,7-10,12,14,18-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Sundheim (US4095309A) in view of Parise (US4075733A), Hopkins (US10413147B2). Regarding claim 1, Sundheim teaches a spraying module (col 8 lines 1-11) comprising a sprayer housing (89, figure 18) and a sprayer assembly (13”, figure 18) disposed within the sprayer housing, the sprayer housing comprising a back plate (see annotated figure 18) couplable to the industrial surface agitator (figure 1, see col 8 lines 15-col 9 lines 60, col 11 lines 30-35) and a front plate (see annotated figure 18), wherein the front plate of the sprayer housing defines one or more elongated slots (see annotated figure 18), and wherein the; and a vacuum module (col 11 lines 20-50) coupled to the front plate such that the. PNG media_image1.png 898 662 media_image1.png Greyscale Sundheim fails to teach one or more elongated slots are vertically elongated such that a longest dimension of the one or more elongated slots is in a vertical direction. Parise teaches a cleaning head (10, figure 1-3) that has a vacuum module (22, figure 1), a spray module (20, figure 1) with a front plate (44, figures 1-3) defines one or more elongated slots (32, figure 3) wherein the one or more elongated slots are vertically elongated (figure 3) such that a longest dimension of the one or more elongated slots is in a vertical direction (figure 3). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Sundheim so that the one or more elongated slots are vertically elongated such that a longest dimension of the one or more elongated slots is in a vertical direction based on the teachings of Parise. This modification would allow the distance and area the spray module impacts to be varied (see Parise abstract). Sundheim in view of Parise fails to teach wherein the sprayer assembly is coupled to the front plate via one or more brackets; and adjustably vacuum module is vertically movable relative to the spraying module. Hopkins teaches wherein the sprayer assembly (106+ 108, figure 1e and 5) is coupled to the front plate via one or more brackets (see annotated figure below; and adjustably vacuum module (104, figure 1e) is vertically movable relative to the spraying module. (“where sections of the cleaning machine can be movable in any angle relative to other sections of the cleaning machine (col 2 lines 36-55, col 6 lines 34-49)) PNG media_image2.png 802 614 media_image2.png Greyscale Thus, it would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to include wherein the sprayer assembly is coupled to the front plate via one or more brackets, and a mechanism that allows the vacuum module to be vertically movable relative to the spraying module based on teachings of Hopkins . This modification would ensure the spraying module is properly secured, and allow the machine’s vacuum module to be tailored for different uses (see Hopkins col 6 lines 35-40). Sundheim in view of Parise and Hopklins fails to teach a back plate is removably couplable to the industrial agitator. Per MPEP 2144.04 (V-C), it would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to have a back plate is removably couplable to the industrial agitator, since it has been held that constructing a formerly integral structure in various elements involves only routine skill in the art. Regarding claim 3, modified Sundheim teaches wherein the vacuum module includes a vacuum head. (see Sundheim 16”, figure 18; col 9 lines 53-60) Regarding claim 7, modified Sundheim teaches herein the sprayer assembly includes an inlet line (see Sundheim 10, figure 18), a manifold (see Sundheim 12, figure 5; col 11 lines 30-35), and a plurality of nozzles (see Sundheim 13, figure 5) extending vertically from the manifold. Regarding claim 8, modified Sundheim teaches wherein the sprayer housing (see Sundheim 89, figure 18) defines an interior (see figure 18), and wherein the sprayer housing further includes the one or more brackets (see Hopkins annotated figure above) extending within the interior, the one or more brackets (see Hopkins annotated figure above) coupled to the front plate, the one or more brackets including a hook portion that defines an opening. Regarding claim 9, modified Sundheim teaches wherein the manifold of the sprayer assembly rests on the hook portion of the one or more brackets within the interior of the sprayer housing (see Hopkins annotated figure above). Regarding claim 10, Sundheim teaches industrial surface agitator having an agitator housing; and a surface cleaning attachment system to the industrial surface agitator, the surface cleaning attachment system (col 7 lines 45-65) comprising: a spraying module (col 8 lines 1-11) comprising a sprayer housing (89, figure 18) and a sprayer assembly (13”, figure 18) disposed within the sprayer housing, the sprayer housing comprising a back plate (see annotated figure 18 above) to the industrial surface agitator (figure 1, see col 8 lines 15-col 9 lines 60, col 11 lines 30-35) and a front plate (see annotated figure 18 above), wherein the front plate of the sprayer housing defines one or more elongated slots (see annotated figure 18), and a vacuum module (col 11 lines 20-50) coupled to the front plate such that the vacuum module is vertically movable relative to the spraying module. Sundheim fails to teach one or more elongated slots are vertically elongated such that a longest dimension of the one or more elongated slots is in a vertical direction. Parise teaches a cleaning head (10, figure 1-3) that has a vacuum module (22, figure 1), a spray module (20, figure 1) with a front plate (44, figures 1-3) defines one or more elongated slots (32, figure 3) wherein the one or more elongated slots are vertically elongated (figure 3) such that a longest dimension of the one or more elongated slots is in a vertical direction (figure 3). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Sundheim so that the one or more elongated slots are vertically elongated such that a longest dimension of the one or more elongated slots is in a vertical direction based on the teachings of Parise. This modification would allow the distance and area the spray module impacts to be varied (see Parise abstract). Sundheim in view of Parise fails to teach wherein the sprayer assembly is coupled to the front plate via one or more brackets; and adjustably vacuum module is vertically movable relative to the spraying module. Hopkins teaches wherein the sprayer assembly (106+ 108, figure 1e and 5) is coupled to the front plate via one or more brackets (see annotated figure below; and adjustably vacuum module (104, figure 1e) is vertically movable relative to the spraying module. (“where sections of the cleaning machine can be movable in any angle relative to other sections of the cleaning machine (col 2 lines 36-55, col 6 lines 34-49)) PNG media_image2.png 802 614 media_image2.png Greyscale Thus, it would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to include wherein the sprayer assembly is coupled to the front plate via one or more brackets, and a mechanism that allows the vacuum module to be vertically movable relative to the spraying module based on teachings of Hopkins . This modification would ensure the spraying module is properly secured, and allow the machine’s vacuum module to be tailored for different uses (see Hopkins col 6 lines 35-40). Sundheim in view of Parise and Hopklins fails to teach a surface cleaning attachment system and a back plate that are removably couplable to the industrial agitator. Per MPEP 2144.04 (V-C), it would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to have a surface cleaning attachment system and a back plate that are removably couplable to the industrial agitator, since it has been held that constructing a formerly integral structure in various elements involves only routine skill in the art. Regarding claim 12, modified Sundheim teaches wherein the industrial surface agitator further comprises a back wall (see Sundheim figures 1 and figure 18) and a front wall (see Sundheim figures 1 and figure 18), wherein the surface cleaning attachment (see connections 91, and 24, figure 18) system is removably couplable (see above per MPEP 2144.04 V-C) to the front wall of the industrial surface agitator. Regarding claim 14, modified Sundheim teaches wherein the vacuum module includes a vacuum head. (see Sundheim 16”, figure 18; col 9 lines 53-60) Regarding claim 18, modified Sundheim teaches wherein the sprayer assembly includes an inlet line (see Sundheim 10, figure 18) , a manifold (see Sundheim 12, figure 5; col 11 lines 30-35), and a plurality of nozzles (see Sundheim 13, figure 5) extending from the manifold. Regarding claim 19, modified Sundheim teaches wherein the sprayer housing (see Sundheim 89, figure 18) defines an interior (see figure 18), and wherein the sprayer housing further includes the one or more brackets (see Hopkins annotated figure above) extending within the interior, the one or more brackets (see Hopkins annotated figure above) coupled to the front plate, the one or more brackets including a hook portion that defines an opening. Regarding claim 20, modified Sundheim teaches wherein the manifold of the sprayer assembly rests on the hook portion of the one or more brackets within the interior of the sprayer housing. (see Hopkins annotated figure above). Claim(s) 4 and 15 are rejected under 35 U.S.C. 103 as being unpatentable over Sundheim (US4095309A) in view of Parise (US4075733A), Hopkins (US10413147B2) as applied to claims 1 and 14 further in view of Cyphert (US4019218). Regarding claims 4 and 15, modified Sundheim teaches all the limitations stated above, but fails to teach wherein a fastener (see col 8 lines 15-30, “mounted”, col 11 lines 25- 35) extends through the vacuum head (16”, figure 18), one of the one or more elongated slots (see annotated figure above), but fails nut to couple the vacuum module to the spraying module. Cyphert teaches a carpet cleaning extractor (abstract) that uses bolt and nut as attachment device to secure components to the base of the cleaning extractor (col 4 lines 65-col 5 lines 5). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim for fastener to be a nut and bolt fastener for purpose of using any known alternative fastener capable of attaching and securing components together such as a bolt and nut. The substitution would have resulted in the predicable result of coupling components together. Claim(s) 5-6 and 16-17 are rejected under 35 U.S.C. 103 as being unpatentable Sundheim (US4095309A) in view of Parise (US4075733A), Hopkins (US10413147B2) as applied to claims 1 and 10 further in view of Cox (WO 2021045998 A1). Regarding claims 5-6 and 16 and 17, modified Sundheim teaches all limitations stated above ,but fails to teach the vacuum module further comprises a glide assembly coupled to the vacuum head and wherein the glide assembly includes a glide plate and one or more wheels rotatably coupled to the glide plate. Cox teaches a cleaning machine that has a vacuum head (17, figure 1; para 0027) , wheel assembly (212, figure 5b) that includes a glide assembly (202 figure 5b and 5c) that has a glide plate (208, figure 5b and 5c)coupled to the wheel assembly (212, 5c and 5b). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Armstrong to include glide assembly coupled to wheel assembly based on the teachings of Cox. This modification would help improve cleaning efficiency of the cleaning machine (para 0075 of Cox). Claim(s) 11 is rejected under 35 U.S.C. 103 as being unpatentable over Sundheim (US4095309A) in view of Parise (US4075733A), Hopkins (US10413147B2) as applied to claim 10 further in view of Wulff (US5611106A). Regarding claim 11, modified Sundheim teaches all limitations stated above ,but fails to teach the industrial surface agitator further comprises counter rotating brushes disposed within the housing. Wulff teaches an industrial carpet cleaning machine (abstract) that comprises counter rotating brushes disposed within the housing (abstract). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to include counter rotating brushes within an industrial surface agitator based on the teachings of Wulff. This modification would help maintain a carpeted floor surface on a steady basis and reduce the chances of excessive soil, wear and loss appeal. (see Wulff col 1 lines 34 – 60) Claim(s) 21-22 is rejected under 35 U.S.C. 103 as being unpatentable over Sundheim (US4095309A) in view of Parise (US4075733A), Hopkins (US10413147B2) as applied to claim1 further in view of Grave (US4488330A) and Nguyen (US11771286B2) Regarding claims 21-22, Sundheim as modified above teaches all limitations stated above and does disclose changing the design of front plate and back plate (see figures 1-25) , but fails to teach wherein the back plate is vertically longer than the front plate such that the back plate includes a guard portion, wherein the back plate includes tab portions extending vertically from the guard portion such that the tab portion and the guard portion collectively define an opening to an interior defined by the sprayer housing and wherein one or more flanges are coupled to the tab portions of the back plate for removably coupling the spraying module to an agitator housing of the industrial surface agitator. Grave teaches a surface cleaning attachment system removably couplable to a surface agitator (col 2 lines 32-35); the surface cleaning attachment system comprising a spraying module (14, figure 4) figure comprising a sprayer housing (18, figure 4) and a sprayer assembly (31, figure 4) disposed within the sprayer housing, the sprayer housing comprising a back plate (25, figure 4) and a front plate (19, figure 4); and the front plate (19, figure 4) of the sprayer housing defines one or more elongated slots (opening where screw 62 sits, ; col 3 lines 64-lines 68, figure 4); a vacuum module (16, figure 4) coupled to the front plate (19, figure 4), the back plate (see Grave 25, figure 4) is vertically longer than the front plate such that the back plate includes a guard portion (see Grave 23, figure 4). It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim to wherein the back plate is vertically longer than the front plate such that the back plate includes a guard portion. The motivation for doing so would be This modification would help loosen soul within carpeted cleaning surfaces (see Grave col 5 lines 10-20). Regarding claims 21-22, Sundheim as modified above and further in view of Grave teaches all limitations stated above ,but fails to teach wherein the back plate includes tab portions extending vertically from the guard portion such that the tab portion and the guard portion collectively define an opening to an interior defined by the sprayer housing. Nguyen teaches a carpet extractor teaches that has a base housing that holds vacuum cleaner module and sprayer module; wherein the base housing has a wide range attachments to connect the base housing to carpet extractor (see figures 5-15; col 6 lines 35-65) including bosses and ribs. It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have further modified Sundheim have aback plate includes tab portions extending vertically from the guard portion such that the tab portion and the guard portion collectively define an opening to an interior defined by the sprayer housing and wherein one or more flanges are coupled to the tab portions of the back plate for removably coupling the spraying module to an agitator housing of the industrial surface agitator based on the teachings of Nguyen in attempt to ensure there is proper connection between the surface cleaning attachment and industrial surface cleaning apparatus as a person with ordinary skill has good reason to pursue known options within his or her technical grasp. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SARAH AKYAA FORDJOUR whose telephone number is (571)272-0390. The examiner can normally be reached Monday - Thursday 9:30am - 5:30pm and Friday 6:00am-3:00pm. 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. /SARAH AKYAA FORDJOUR/Examiner, Art Unit 3723 /MONICA S CARTER/Supervisory Patent Examiner, Art Unit 3723
Read full office action

Prosecution Timeline

Show 2 earlier events
Jun 23, 2025
Response Filed
Oct 08, 2025
Final Rejection mailed — §103
Dec 08, 2025
Response after Non-Final Action
Jan 08, 2026
Request for Continued Examination
Feb 17, 2026
Response after Non-Final Action
Mar 06, 2026
Non-Final Rejection mailed — §103
May 29, 2026
Response Filed
Aug 26, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12690734
CLEANER HEAD AND CLEANER INCLUDING THE SAME
3y 9m to grant Granted Jul 28, 2026
Patent 12685423
CLEANING MACHINE ERGONOMIC HANDLE
2y 5m to grant Granted Jul 21, 2026
Patent 12667238
SURFACE CLEANING APPARATUS WITH STEAM DELIVERY
3y 3m to grant Granted Jun 30, 2026
Patent 12643158
GRINDING TOOL FOR GRINDING BUTTONS ON A ROCK DRILL BIT
4y 5m to grant Granted Jun 02, 2026
Patent 12520976
SURFACE CLEANING APPARATUS
4y 0m to grant Granted Jan 13, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
52%
Grant Probability
78%
With Interview (+25.8%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 142 resolved cases by this examiner. Grant probability derived from career allowance rate.

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