Prosecution Insights
Last updated: April 19, 2026
Application No. 17/556,196

CLEANING MODULE AND AUTONOMOUS CLEANING DEVICE

Final Rejection §103
Filed
Dec 20, 2021
Examiner
FORDJOUR, SARAH AKYAA
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Shenzhen Fly Rodent Dynamics Intelligent Technology Co. Ltd.
OA Round
6 (Final)
54%
Grant Probability
Moderate
7-8
OA Rounds
2y 12m
To Grant
85%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
71 granted / 132 resolved
-16.2% vs TC avg
Strong +31% interview lift
Without
With
+30.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
53 currently pending
Career history
185
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
53.1%
+13.1% vs TC avg
§102
25.9%
-14.1% vs TC avg
§112
14.7%
-25.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 132 resolved cases

Office Action

§103
DETAILED ACTION CLEANING MODULE AND AUTONOMOUS CLEANING DEVICE 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 amendments filed 08-18-2025 has been entered. Claims 1-10,13-14 are currently pending and have been examined. The previous rejection has been updated due to applicant’s amendments. Response to Arguments Applicant’s arguments see pages 15, filed 11/29/2025, with respect to the rejection(s) of claim(s) 1 and their dependent claims under 35 U.S.C.102 have been fully considered but are moot because the new ground of rejection (as necessitated by amendment) relies on a different combination of prior art references, not applied in the prior rejection of record. 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) 1-2,13-14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hong (US20230146907A1) in view Kim (GB2404139A). Regarding claim 1,Hong teaches a first mounting frame (104, figure 4), provided with a first dust-passing opening (figures 1-4; para 0113-0120); a second mounting frame (112, figure 4), provided with a second dust-passing opening (para 0118, 0125,0138) wherein the second mounting frame is connected to the first mounting frame (figures 4-5); the first mounting frame is configured to be connected to a machine body(para 0100-0103);, and the second mounting frame is connected to a roller brush (para 0106-0108) and an air duct (136, figure 4), a first end of the air duct being in a sealed connection with the first dust- passing opening, and a second end of the air duct being in a detachable and sealed connection with the second dust-passing opening (figures 3 and 6; para 0038-0056) wherein the air duct (136, figure 4) is arranged between the first mounting frame and the second mounting frame (figure 6); and the second mounting frame (112, figure 8) is arranged between the roller brush (123, figures 1-8; para 0106-0112) and the first mounting frame wherein the second mounting frame is provided with a boss (114, figure 6), and the second dust- passing opening (121, figure 6) is arranged on the boss; the cleaning module further comprises a connection frame (116, figure 4-5, and the connection frame is detachably connected to the boss (para 0123); wherein a dust box (127, figures 1-2) is provided inside the machine body, and the first dust-passing opening is configured to be in communication with the dust box. Hong fails to teach the second end of the air duct is provided with an elastic gasket, and the elastic gasket is sealingly arranged between the boss and the connection frame to form a sealed connection between the second end of the air duct and the second dust-passing opening; wherein the second end of the air duct extends in a direction away from a center of the air duct to form the elastic gasket. Kim teaches a dust receptacle for a robotic vacuum cleaner that includes a gasket that provides air-tight seal between dust receptacle and ports (pages 5-7), wherein the gasket is made from a resilient material to create a seal. It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Hong to have second end of the air duct is provided with an elastic gasket, and the elastic gasket is sealingly arranged between the boss and the connection frame to form a sealed connection between the second end of the air duct and the second dust-passing opening; wherein the second end of the air duct extends in a direction away from a center of the air duct to form the elastic gasket based on teachings of Kim. This modification would help create an air-tight seal. (see pages 2-5 of Kim) Regarding claim 2, modified Hong teaches all limitations stated above, but fails to teach wherein the air duct is an elastic air duct. However, Hong does disclose in a different embodiment the air duct can be made from elastic material. (see para 0240-0242) 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 Hong to the air duct be an elastic air duct based on teachings of second embodiment of Hong. This modification would help create a flexible air duct (see para 0240-0242 of Hong). Regarding claim 13, modified Hong teaches wherein one of the boss (114, figure 6) and the connection frame is provided with a protrusion portion (figure 7), the other of the boss and the connection frame is provided with a through hole (figure 7), and the protrusion portion and the through hole cooperate with each other, such that the connection frame and the boss are detachably connected (para 0123; figure 7). Regarding claim 14,Hong teaches a cleaning module (110, figure 5), and the cleaning module being arranged on a machine body (100, figures 1-2), wherein the cleaning module comprises: a first mounting frame (104, figure 4), proving with a first dust-passing opening; a second mounting frame (112, figure 4), proving with a second dust-passing opening (para 0118,0125,0138), wherein the second mounting frame is connected to the first mounting frame; the first mounting frame is configured to be connected to the machine body, and the second mounting frame is connected to a roller brush (para 0106-0108); and an air duct (136, figure 4), a first end of the air duct being in a sealed connection with the first dust- passing opening, and a second end of the air duct being in a detachable and sealed connection with the second dust-passing opening (figures 3 and 6; para 0038-0056); wherein the air duct (136, figure 4) is arranged between the first mounting frame and the second mounting frame (figure 6); and the second mounting frame (112, figure 8) is arranged between the roller brush (123, figures 1-8; para 0106-0112) and the first mounting frame wherein the second mounting frame is provided with a boss (114, figure 6), and the second dust- passing opening (121, figure 6) is arranged on the boss; the cleaning module further comprises a connection frame (116, figure 4-5, and the connection frame is detachably connected to the boss (para 0123); wherein a dust box (127, figures 1-2) is provided inside the machine body, and the first dust-passing opening is configured to be in communication with the dust box. Hong fails to teach the second end of the air duct is provided with an elastic gasket, and the elastic gasket is sealingly arranged between the boss and the connection frame to form a sealed connection between the second end of the air duct and the second dust-passing opening; wherein the second end of the air duct extends in a direction away from a center of the air duct to form the elastic gasket. Kim teaches a dust receptacle for a robotic vacuum cleaner that includes a gasket that provides air-tight seal between dust receptacle and ports (pages 5-7), wherein the gasket is made from a resilient material to create a seal. It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Hong the second end of the air duct is provided with an elastic gasket, and the elastic gasket is sealingly arranged between the boss and the connection frame to form a sealed connection between the second end of the air duct and the second dust-passing opening;wherein the second end of the air duct extends in a direction away from a center of the air duct to form the elastic gasket based on teachings of Kim. This modification would help create an air-tight seal. (see pages 2-5 of Kim). Claim(s) 3-10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hong (US20230146907A1) in view Kim (GB2404139A) further in view of Li (CN205885370U). Regarding claim 3, Hong as modified in claim 2 teaches all the limitations stated above ,but fails to teach wherein the first mounting frame is further provided with: a connection plate, the first dust-passing opening is arranged on the connection plate; and a frame body, provided with an opening for receiving the first end, and the connection plate is detachably connected with the frame body. Li teaches the cleaning module that includes a first mounting frame (131, figure 20) is further provided with: a connection plate (1312, figure 20), the first dust-passing opening is arranged on the connection plate; and a frame body (1313, figure 20), provided with an opening for receiving the first end, and the connection plate is detachably (see connections of 1313a and 1312; Li discloses “1312 is provided with two mounting holes 1312A on the left and right direction, and the floating bracket 1313 is provided with two mounting shafts 1313A on the left and right direction, with the corresponding mounting hole 1312A between the limiting and rotating through each mounting shaft 1313A”) connected with the frame body. It would have been obvious to one of ordinary skill in the art before effective filing date of the claimed invention to have modified Hong to have wherein the first mounting frame is further provided with: a connection plate, the first dust-passing opening is arranged on the connection plate; and a frame body, provided with an opening for receiving the first end, and the connection plate is detachably connected with the frame body based on teachings of Li. This modification would help improve efficiency of replacing the cleaning module and maintenance of cleaning module (Li abstract) Regarding claim 4, Hong as modified by Li teaches all limitations stated above wherein the first end of the air duct is connected to the connection plate (see Li 1312 )at the first dust-passing opening to form a sealed connection between the first end and the first dust-passing opening (see Kim pages 2-5). However, the recitation “the first end of the air duct is hot-melted to the connection plate at the first dust-passing opening” this is considered a product by process limitation; the claimed limitation does not define a structure that is distinguished from the end product of the invention disclosed modified Hong Therefore, the claim is anticipated by the teachings of modified Hong. Regarding claim 5, modified Hong teaches one of the connection plate (see Li 1312, figure 20) and the frame body (see Li 1313, figure 20) is provided with a first connection portion (see Li 1312a, figure 20), and another one of the connection plate and the frame body is provided with a second connection portion (see Li 1313a, figure 20) and the first connection portion and the second connection portion cooperate with each other, such that the connection plate is detachably connected to the frame body (see Li connections of 1313a and 1312; Li discloses “1312 is provided with two mounting holes 1312A on the left and right direction, and the floating bracket 1313 is provided with two mounting shafts 1313A on the left and right direction, with the corresponding mounting hole 1312A between the limiting and rotating through each mounting shaft 1313A”) Regarding claim 6, modified Hong teaches the first connection portion (see Li 1312a, figure 20) is configured to be a protrusion, the second connection (see Li 1313a, figure 20) portion is configured to be a groove adapted to the protrusion, and the protrusion is inserted into the groove to form a detachable connection between the connection plate and the frame body. (see Li connections of 1313a and 1312; Li discloses “1312 is provided with two mounting holes 1312A on the left and right direction, and the floating bracket 1313 is provided with two mounting shafts 1313A on the left and right direction, with the corresponding mounting hole 1312A between the limiting and rotating through each mounting shaft 1313A”) Regarding claim 7, modified Hong teaches the opening (see Li figure 20) is configured to be a stepped opening, the connection plate is fitted with the opening, and an opening direction of the groove is the same as an opening direction of the opening, such that the connection plate is able to slide along the opening direction of the opening until the groove is inserted into the protrusion. (see Li connections of 1313a and 1312; Li discloses “1312 is provided with two mounting holes 1312A on the left and right direction, and the floating bracket 1313 is provided with two mounting shafts 1313A on the left and right direction, with the corresponding mounting hole 1312A between the limiting and rotating through each mounting shaft 1313A”) Regarding claim 8, modified Hong teaches at least one side of the opening is provided with the first connection portion (see Li 1312a, figure 20; ), and at least one side of the connection plate corresponding to the opening is provided with the second connection portion (see Li 1313a, figure 20). Regarding claim 9, Hong as modified teaches all limitations stated above ,but fails to teach wherein an opening length of the second end of the air duct is smaller than an opening length of the first end of the air duct, such that an airflow path with a gradual opening length is formed. Hong does disclose the air duct is flexible (see para 0240-0242 of Hong). Li teaches cleaning module where the air duct shape can be formed in various different shapes. (Yu discloses “a primary air duct 4 close to the brush 11 of entrance end 41 having a larger sectional area, away from brush 11 of the outlet end 42 has a smaller cross-sectional area. wherein, based on the entrance end 41 of the "incremental" feature, section of the entrance end 41 can be a trapezoid, and second narrow edge 412 is the upper bottom of the trapezoid, the first edge 411 is the lower bottom of the trapezoid, of course, only if it accords with the "increase" profile, an entrance end 41 section also can be other shapes, such as corresponding to the two waists of the trapezoid can be arc”) Because Li discloses it is known to make adjustments to the air duct including their shape, it would have been an obvious matter of design choice to a person ordinary skill in the art to make the air duct of Hong based on the teachings of Li to have opening length of the second end of the air duct is smaller than an opening length of the first end of the air duct, such that an airflow path with a gradual opening length is formed, would have been a mere design consideration based on the characteristics the air duct needed for the airflow path. Such a modification would have involved only routine skill in the art to accommodate the air duct requirements based on intended use. It has been held that discovering an optimum value of a result-effective involves only routine skill in the art. Regarding claim 10, modified Hong teaches all limitations stated above, but fails to explicitly disclose a second dust- passing opening is in a strip shape, and the second dust-passing opening extends from one end to an other end of the second mounting frame in a length direction of the second mounting frame, and the second end of the air duct is adapted to the second dust-passing opening. wherein the second dust- passing opening is in a strip shape, and the second dust-passing opening extends from one end to an other end of the second mounting frame in a length direction of the second mounting frame, and the second end of the air duct is adapted to the second dust-passing opening. Hong does disclose the air duct is flexible (see para 0240-0242 of Hong). Li teaches a cleaning module that includes where the air duct shape which correspond to first and second dust passing opening can be formed in various different shapes. (Yu discloses “a primary air duct 4 close to the brush 11 of entrance end 41 having a larger sectional area, away from brush 11 of the outlet end 42 has a smaller cross-sectional area. wherein, based on the entrance end 41 of the "incremental" feature, section of the entrance end 41 can be a trapezoid, and second narrow edge 412 is the upper bottom of the trapezoid, the first edge 411 is the lower bottom of the trapezoid, of course, only if it accords with the "increase" profile, an entrance end 41 section also can be other shapes, such as corresponding to the two waists of the trapezoid can be arc”) Because Li discloses it is known to make adjustments to the air duct including their shape, it would have been an obvious matter of design choice to a person ordinary skill in the art to make the second dust- passing opening of Hong in a strip shape, and the second dust-passing opening extends from one end to an other end of the second mounting frame in a length direction of the second mounting frame, and the second end of the air duct is adapted to the second dust-passing opening based on the teachings, it would have been a mere design consideration based on the characteristics the air duct needed for the airflow path. Such a modification would have involved only routine skill in the art to accommodate the air duct requirements based on intended use. It has been held that discovering an optimum value of a result-effective involves only routine skill in the art. Conclusion THIS ACTION IS MADE FINAL. 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

Dec 20, 2021
Application Filed
Aug 09, 2023
Non-Final Rejection — §103
Oct 18, 2023
Response Filed
Jan 18, 2024
Final Rejection — §103
Mar 22, 2024
Response after Non-Final Action
Apr 24, 2024
Response after Non-Final Action
May 31, 2024
Request for Continued Examination
Jun 04, 2024
Response after Non-Final Action
Jul 12, 2024
Non-Final Rejection — §103
Oct 17, 2024
Response Filed
Feb 06, 2025
Final Rejection — §103
May 12, 2025
Response after Non-Final Action
Jun 16, 2025
Non-Final Rejection — §103
Aug 18, 2025
Response Filed
Nov 24, 2025
Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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SURFACE CLEANING APPARATUS
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CIRCULAR SAW APPARATUS WITH INTEGRATED MULTISTAGE FILTRATION SYSTEM
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Patent 12419475
VACUUM CLEANER
2y 5m to grant Granted Sep 23, 2025
Patent 12419473
HANDHELD EXTRACTION CLEANER
2y 5m to grant Granted Sep 23, 2025
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

7-8
Expected OA Rounds
54%
Grant Probability
85%
With Interview (+30.9%)
2y 12m
Median Time to Grant
High
PTA Risk
Based on 132 resolved cases by this examiner. Grant probability derived from career allow rate.

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