Prosecution Insights
Last updated: April 19, 2026
Application No. 18/710,078

ROTOR OF ROTATING ELECTRIC MACHINE

Non-Final OA §102§103§112
Filed
May 14, 2024
Examiner
ELNAKIB, AHMED
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Hitachi Astemo, Ltd.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
87%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
447 granted / 568 resolved
+10.7% vs TC avg
Moderate +9% lift
Without
With
+8.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
28 currently pending
Career history
596
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
49.2%
+9.2% vs TC avg
§102
23.9%
-16.1% vs TC avg
§112
24.4%
-15.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 568 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION Claims 1-8 of U.S. Application No. 18/710,078 filed on 05/14/2024 are presented for examination. 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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 05/14/2024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Objections Claim 2 is objected to because of the following informalities: The recitation, “…a main surface of the magnet” should read, “…the main surface of the magnet”. Appropriate correction is required. 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 5-8 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. Claims 5-8 recites, “…A rotating electric machine comprising: the rotor of the rotating electric machine…”, it is not clear if the two rotating electrical machines are the same, or a new rotating electrical machine is being introduced. Also, if they are the same or different from the preceding claims. Claim Rejections - 35 USC § 102 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-2, 5-6 are rejected under 35 U.S.C. 102(a)(1) and 102(a)(2) as being anticipated by Kobayashi Yugi et al. (WO 2019087747; Hereinafter, “Kobayashi”). Regarding claim 1: Kobayashi discloses a rotor (250) of a rotating electric machine (200) comprising: a pair of magnets (254a, or 254b) arranged in a V shape (fig. 4); and a rotor core (252) provided with magnet holes (253) into which the magnets (154) are inserted, wherein the rotor core (252) has, on an outside in a radial direction, PNG media_image1.png 777 1213 media_image1.png Greyscale a magnetic gap (257, 258) between the rotor core (252) and an outermost diameter corner (annotated figure 6 above) located on an outermost side in the radial direction among corners of the magnet (254a as in fig. 6), and has a protrusion (260) formed so as to protrude toward the magnet (254a) between a first outermost diameter portion (annotated figure 6 above) closer to a magnetic pole center (annotated figure 6 above) of the rotor than the outermost diameter corner (annotated figure 6 above) in an outer diameter of the magnetic gap (257, 258) and a second outermost diameter portion (annotated figure 6 above) closer to a magnetic pole boundary (annotated figure 6 above) of the rotor than the outermost diameter corner in an outermost diameter of the magnetic gap (257, 258), and the protrusion (260) faces a main surface (262) of the magnet (254a). Regarding claim 2/1: Kobayashi discloses the limitations of claim 1 and further discloses that the protrusion (260) faces a main surface (262) of the magnet (254a) with a predetermined gap (fig. 6) interposed therebetween. Regarding claim 5/1, 6/2/1: Kobayashi discloses the limitations of claims 1, 2 and further discloses a rotating electric machine (200) comprising: the rotor (250) of the rotating electric machine (200) according to the rotor of the rotating electric machine according to claim 1, 2; and a stator (230) facing the rotor (250) with a predetermined air gap (222) interposed therebetween (fig. 3). 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. Claims 3, 7 are rejected under 35 U.S.C. 103 as being unpatentable over Kobayashi in view of Kido Osao et al. (JP 2018011466; Hereinafter, “Kido”). Regarding claim 3/1: Kobayashi discloses the limitations of claim 1 but does not clearly show a distance between an outer peripheral surface of the rotor and the first outermost diameter portion is longer than a distance between an outer peripheral surface of the rotor and the second outermost diameter portion. Kido discloses a distance (A; annotated figure 2 below) between an outer peripheral surface of the rotor and the first outermost diameter portion is longer than a distance (B) between an outer peripheral surface of the rotor and the second outermost diameter portion (annotated figure 2 below). PNG media_image2.png 656 737 media_image2.png Greyscale Therefore, it would have been obvious for a person having ordinary skill in the art before the effective filing date of the claimed invention to have configured the rotor of Kobayashi with the distance between the outer peripheral surface of the rotor and the first outermost diameter portion to be longer than the distance between an outer peripheral surface of the rotor and the second outermost diameter portion as taught by Kido for improved torque and improved resistance to demagnetization (para [0006]). Regarding claim 7/3/1: Kobayashi in view of Kido discloses the limitations of claim 3 and Kobayashi further discloses a rotating electric machine (200) comprising: the rotor (250) of the rotating electric machine (200) according to the rotor of the rotating electric machine according to claim 3; and a stator (230) facing the rotor (250) with a predetermined air gap (222) interposed therebetween (fig. 3). Claims 4, and 8 are rejected under 35 U.S.C. 103 as being unpatentable over Kobayashi in view of Kubota Yoshinaga et al. (JP 2020120444; Hereinafter, “Kubota”). Regarding claim 4/1: Kobayashi discloses the limitations of claim 1 but does not clearly show that among corners of the magnet, a corner closest to the magnetic pole boundary is in contact with the rotor core. Kubota discloses among corners of the magnet, a corner (annotated figure 3 below) closest to the magnetic pole boundary (Lq) is in contact with the rotor core. PNG media_image3.png 517 983 media_image3.png Greyscale Therefore, it would have been obvious for a person having ordinary skill in the art before the effective filing date of the claimed invention to have configured the rotor of Kobayashi with among corners of the magnet, a corner closest to the magnetic pole boundary is in contact with the rotor core as taught by Kubota to provide mechanical support to the magnet improving the robustness of the rotor. Regarding claim 8/4/1: Kobayashi in view of Kubota discloses the limitations of claim 4 and Kobayashi further discloses a rotating electric machine (200) comprising: the rotor (250) of the rotating electric machine (200) according to the rotor of the rotating electric machine according to claim 3; and a stator (230) facing the rotor (250) with a predetermined air gap (222) interposed therebetween (fig. 3). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to AHMED ELNAKIB whose telephone number is (571)270-0638. The examiner can normally be reached 8:00AM-4:00PM. 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, Tulsidas Patel can be reached at 571-272-2098. 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. /AHMED ELNAKIB/ Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

May 14, 2024
Application Filed
Jan 16, 2026
Non-Final Rejection — §102, §103, §112 (current)

Precedent Cases

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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
87%
With Interview (+8.7%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 568 resolved cases by this examiner. Grant probability derived from career allow rate.

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