Prosecution Insights
Last updated: July 17, 2026
Application No. 18/519,873

CLEANING DEVICE

Non-Final OA §102
Filed
Nov 27, 2023
Priority
Dec 13, 2022 — JP 2022-198355
Examiner
HTAY, AYE SU MON
Art Unit
3745
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Canon Inc.
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
239 granted / 357 resolved
-3.1% vs TC avg
Strong +28% interview lift
Without
With
+28.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
15 currently pending
Career history
387
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
73.9%
+33.9% vs TC avg
§102
16.7%
-23.3% vs TC avg
§112
9.2%
-30.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 357 resolved cases

Office Action

§102
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 Applicant’s election without traverse of Species 1, as represented by Figures 1, in the reply filed on 06/17/2026 is acknowledged. Claims 6-9, 11, 13-15 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 06/17/2026. 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. Claims 1-5, 10, 12 and 16 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yoshida (JP 2005224415). In reference to Claim 1 Yoshida discloses: A cleaning device capturing dust on a cleaning target surface (“surface to be cleaned” shown in Figure 2) by static electricity, the cleaning device comprising: a frame body (3); a rotating brush (1, 2) rotatably supported on the frame body and provided with a brush part (2); a driver (“The rotary brush 1 is rotatably supported by the suction tool housing 3 and is driven to rotate by an electric motor (not shown),” Page 4 of the English Translation of Yoshida) that rotates the rotating brush; an opening (opening of suction port 4, Fig. 1, 4, 5) that exposes a portion of the brush part to outside of the frame body; and a rubbing member (charging plate 6) that gives a negative charge to the brush part by rubbing the brush part as the rotating brush rotates, wherein a material that forms the rubbing member is on a further toward positive end of a triboelectric series than a material that forms the brush part.(Page 1-6 of the English Translation of Yoshida; Fig. 1-6). [Page 3 of the English Translation of Yoshida] According to a second aspect of the present invention, the dust pick-up portion of the rotating brush is made of nylon or a material having a positive charge column made of nylon, and the charging portion for charging the dust pick-up portion of the rotating brush is made of polyethylene or polyethylene. It is made of a negative material, and when the rotating brush dust pick-up part comes into contact with the charging part due to the rotation of the rotating brush, the rotating brush dust pick-up part is strongly charged on the positive side, and dust on the surface to be cleaned It is stronger and can be adsorbed and collected in the dust scraping section. According to a third aspect of the present invention, the dust sweeping portion of the rotating brush is formed of polyethylene or a material having a negatively charged column from polyethylene, and the charging unit for charging the dust brushing portion of the rotating brush is charged from nylon or nylon. It is made of a positive material, and when the rotating brush rotates, when the rotating brush dust pick-up part comes into contact with the charging part, the rotating brush dust pick-up part is strongly charged to the negative electrode side, and dust on the surface to be cleaned is collected. It is stronger and can be adsorbed and collected in the dust scraping section. PNG media_image1.png 692 820 media_image1.png Greyscale Figure 1: Figures 1-4 of Yoshida for reference. In reference to Claim 2 Yoshida discloses: The cleaning device according to claim 1, wherein the material that forms the rubbing member has a smaller work function than the material that forms the brush part. .(Page 1-2 of the English Translation of Yoshida; Fig. 1-5). In reference to Claim 3 Yoshida discloses: The cleaning device according to claim 1, wherein, in a rotating direction (rotating direction as shown in Fig. 4-5) of the rotating brush (1, 2), the rubbing member is positioned upstream of the opening (opening of suction port 4, Fig. 1, 4, 5) and is positioned downstream of another member (7 ground plate) in contact with the rotating brush. (Page 1-6 of the English Translation of Yoshida; Fig. 1-6). In reference to Claim 4 Yoshida discloses: The cleaning device according to claim 1, wherein the portion of the brush part (bush 2) exposed through the opening (opening of suction port 4, Fig. 1, 4, 5) is configured to rub the cleaning target surface as the cleaning device moves on the cleaning target surface (Fig. 2). In reference to Claim 5 Yoshida discloses: The cleaning device according to claim 1, wherein the rotating brush includes a shaft part (see shaft as shown by reference 1 in Fig. 1, 5) rotatably supported on the frame body, and the brush part (2) is attached to the shaft part and is configured to rotate integrally with the shaft part.(Fig. 1-5). In reference to Claim 10 Yoshida discloses: The cleaning device according to claim 1, wherein the driver is a motor (“The rotary brush 1 is rotatably supported by the suction tool housing 3 and is driven to rotate by an electric motor (not shown),” Page 4 of the English Translation of Yoshida). In reference to Claim 12 Yoshida discloses: The cleaning device according to claim 1, further comprising: a removal member (7) that makes contact with the brush part downstream of the opening and upstream of the rubbing member in a rotating direction of the rotating brush and scrapes off dust adhered to the brush part; and a container that holds dust scraped from the brush part by the removal member. (“Dust separated from the brush portion 2 of the rotating brush 1 is transferred to the branch passage 5 by the intake air flow, and further transferred to a dust collecting portion (not shown) of the main body of the vacuum cleaner and collected there,” Page 4 of the English Translation of Yoshida). (Page 1-6 of the English Translation of Yoshida; Fig. 1-5). In reference to Claim 16 Yoshida discloses: The cleaning device according to claim 1, wherein the cleaning device is a head part of a vacuum cleaner.(Page 1 of the English Translation of Yoshida; Fig. 1). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Fujita et al. (US 20120297570) discloses a vacuum cleaner comprising brushing components that are relevant to the Applicant’s invention. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AYE SU MON HTAY whose telephone number is (571)270-5958. The examiner can normally be reached Monday-Friday, 9:00am-3:00pm PST. 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, Nathan Wiehe can be reached at 571-272-8648. 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. /AYE S HTAY/Examiner, Art Unit 3745 /NATHANIEL E WIEHE/Supervisory Patent Examiner, Art Unit 3745
Read full office action

Prosecution Timeline

Nov 27, 2023
Application Filed
Jul 02, 2026
Non-Final Rejection mailed — §102 (current)

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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
67%
Grant Probability
95%
With Interview (+28.5%)
3y 3m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 357 resolved cases by this examiner. Grant probability derived from career allowance rate.

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