Prosecution Insights
Last updated: October 25, 2026
Application No. 19/079,384

MOTOR DEVICE AND MANUFACTURING METHOD OF ROTOR

Non-Final OA §103
Filed
Mar 13, 2025
Priority
Mar 28, 2024 — JP 2024-053802
Examiner
VO, ETHAN NGUYEN
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
MITSUBA Corporation
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
11m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
52 granted / 66 resolved
+10.8% vs TC avg
Moderate +10% lift
Without
With
+10.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
18 currently pending
Career history
87
Total Applications
across all art units

Statute-Specific Performance

§103
65.2%
+25.2% vs TC avg
§102
27.5%
-12.5% vs TC avg
§112
7.4%
-32.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 66 resolved cases

Office Action

§103
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 . 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. Claims 1-2 are rejected under 35 U.S.C. 103 as being unpatentable over Zheng (US 20220393559) and in view of Maeyama (JP 2001231198). As to claim 1, Zheng discloses a motor device (Para 0002) comprising: a stator (Para 0014); and a rotor rotatably provided on a radially inner side of the stator (Para 0014), wherein the rotor (Para 0014) comprises: a rotation shaft (Para 0014); a rotor core mounted to the rotation shaft (Para 0014); a ring magnet mounted to an outer circumferential part of the rotor core (Para 0084). Zheng fails to disclose an opposing member mounted to the rotation shaft and opposed to the ring magnet in an axial direction of the rotation shaft, wherein one of the ring magnet or the opposing member is provided with a taper part inclined with respect to the axial direction of the rotation shaft, and the other of the ring magnet or the opposing member is provided with an abutting part abutted against the taper part in the axial direction of the rotation shaft. Maeyama discloses an opposing member mounted to the rotation shaft and opposed to the ring magnet in an axial direction of the rotation shaft (Fig. 1A), wherein the opposing member is provided with a taper part inclined with respect to the axial direction of the rotation shaft (Fig. 1A), and the ring magnet is provided with an abutting part abutted against the taper part in the axial direction of the rotation shaft (Fig. 1A). PNG media_image1.png 653 740 media_image1.png Greyscale Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the motor of Zheng with an opposing member mounted to the rotation shaft and opposed to the ring magnet in an axial direction of the rotation shaft, wherein one of the ring magnet or the opposing member is provided with a taper part inclined with respect to the axial direction of the rotation shaft, and the other of the ring magnet or the opposing member is provided with an abutting part abutted against the taper part in the axial direction of the rotation shaft, as disclosed by Maeyama, to properly secure the rotor core to the shaft and support structural stability. As to claim 2, the combination of Zheng and Maeyama discloses the motor device as claimed in claim 1, wherein the opposing member is provided on both sides of the ring magnet in the axial direction of the rotation shaft (Fig. 1A Maeyama). PNG media_image1.png 653 740 media_image1.png Greyscale Claim 3 is rejected under 35 U.S.C. 103 as being unpatentable over Zheng and in view of Maeyama, Liang (TW I596872), and Uchidate (JP 2019161921). As to claim 3, the combination of Zheng and Maeyama discloses the motor device as claimed in claim 2, wherein one of the opposing members that is disposed on the output part side of the rotation shaft is abutted against the rotor core in the axial direction of the rotation shaft (Fig. 1A). PNG media_image1.png 653 740 media_image1.png Greyscale Zheng fails to disclose one axial side of the rotation shaft is provided with an output part driving a driving target, and the other of the opposing members that is disposed on a side opposite to the output part side of the rotation shaft is separated from the rotor core in the axial direction of the rotation shaft. Liang discloses one axial side of the rotation shaft is provided with an output part driving a driving target (30; Fig. 1). PNG media_image2.png 464 403 media_image2.png Greyscale Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the motor of Zheng with one axial side of the rotation shaft is provided with an output part driving a driving target, as disclosed by Liang, to optimize torque output while remaining compact. Uchidate discloses an opposing member that is disposed on a side opposite to the output part side of the rotation shaft is separated from the rotor core in the axial direction of the rotation shaft (42; Fig. 2). PNG media_image3.png 582 625 media_image3.png Greyscale Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the motor of Zheng with an opposing member that is disposed on a side opposite to the output part side of the rotation shaft is separated from the rotor core in the axial direction of the rotation shaft, as disclosed by Uchidate, to allow for thermal expansion and assembly tolerances. Claims 4-5 are rejected under 35 U.S.C. 103 as being unpatentable over Uchidate, and in view of Liang and Maeyama. As to claim 4, Uchidate discloses a manufacturing method of a rotor (Para 0011), which is a manufacturing method of a rotor rotatably provided on a radially inner side of a stator (para 0011), the manufacturing method of a rotor comprising: a first process of press-fitting a rotor core to a rotation shaft and positioning the rotor core at a specified position of the rotation shaft (Para 0011); a second process of press-fitting an opposing member (Para 0021); a third process of applying an adhesive to an outer circumferential part of the rotor core (Para 0038); and a fourth process of mounting a ring magnet from a side opposite to the output part side in the axial direction of the rotation shaft (Para 0027-0029, 0038). Uchidate fails to disclose an output part side driving a driving target in an axial direction of the rotation shaft; abutting the opposing member against the rotor core; and abutting a taper part provided at the opposing member against an abutting part provided at the ring magnet. Liang discloses an output part side driving a driving target in an axial direction of the rotation shaft (30; Fig. 1). PNG media_image2.png 464 403 media_image2.png Greyscale Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the motor of Zheng with an output part side driving a driving target in an axial direction of the rotation shaft, as disclosed by Liang, to optimize torque output while remaining compact. Maeyama discloses abutting the opposing member against the rotor core (Fig. 1A); and abutting a taper part provided at the opposing member against an abutting part provided at the ring magnet (Fig. 1A). PNG media_image1.png 653 740 media_image1.png Greyscale Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to provide the motor of Zheng with abutting the opposing member against the rotor core; and abutting a taper part provided at the opposing member against an abutting part provided at the ring magnet, as disclosed by Maeyama, to properly secure the rotor core to the shaft and support structural stability. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ETHAN N VO whose telephone number is (571)270-7593. The examiner can normally be reached Mon-Fri 8:30am - 5pm. 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, Christopher M Koehler can be reached on 571 272 3560. 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. /ETHAN NGUYEN VO/ Examiner, Art Unit 2834 /CHRISTOPHER M KOEHLER/Supervisory Patent Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Mar 13, 2025
Application Filed
Sep 29, 2026
Non-Final Rejection mailed — §103 (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
79%
Grant Probability
89%
With Interview (+10.2%)
2y 7m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 66 resolved cases by this examiner. Grant probability derived from career allowance rate.

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