Prosecution Insights
Last updated: July 26, 2026
Application No. 18/587,449

ROTATING ELECTRIC MACHINE AND INSULATING MEMBER

Final Rejection §103
Filed
Feb 26, 2024
Priority
Mar 06, 2023 — JP 2023-033325
Examiner
VO, ETHAN NGUYEN
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Honda Motor Co., Ltd.
OA Round
2 (Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
39 granted / 52 resolved
+7.0% vs TC avg
Moderate +11% lift
Without
With
+10.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
16 currently pending
Career history
75
Total Applications
across all art units

Statute-Specific Performance

§103
94.7%
+54.7% vs TC avg
§102
2.0%
-38.0% vs TC avg
§112
3.3%
-36.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 52 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 . Response to Arguments Applicant's arguments filed 3/17/26 have been fully considered but they are not persuasive. Regarding independent claim 6, applicant asserts that: “In light of the above, the Applicant submits that claim 1 as amended is novel in view of the cited art. Claims 6 and 13 are novel for similar reasons. The dependent claims are allowable at least based on their dependency.” The examiner, however, disagrees. Claim 6 does not include the limitation, “the filler forms a second channel through which the cooling medium guided from the introduction opening flows in the axial direction, the second channel communicating with the gap provided in the first region”, as disclosed in independent claims 1 and 13. Therefore, applicant’s arguments are moot. 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. Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over rejected Down (US 2007/0138878) and in view of Ito (US 2024/0204584). As to claim 6, Down discloses a rotating electric machine (Para 0016) comprising a rotor and a stator, the stator has a stator coil extending in an axial direction (Fig. 4), an insulating member enclosing the stator coil (Fig. 4), and an annular stator core in which a plurality of slots into which the stator coil enclosed by the insulating member is inserted are formed (Fig. 4; Para 0003), in the stator core, a first channel for introducing a cooling medium into each of the plurality of slots is formed (Fig. 4), and in the insulating member (Fig. 4), an introduction opening for guiding the cooling medium introduced into a slot (Fig. 4), among the plurality of slots, to a space enclosed by the insulating member is provided, wherein the insulating member has, along the axial direction (Fig. 4), a first region where the introduction opening is provided and a pair of second regions provided on both sides of the first region in the axial direction where the introduction opening is not provided (Fig. 4), in the first region, a gap is provided between the insulating member and the stator coil (Fig. 4). PNG media_image1.png 339 315 media_image1.png Greyscale PNG media_image2.png 353 391 media_image2.png Greyscale Down fails to disclose a filler to be applied into the gap is provided. Ueda, however, discloses a filler to be applied into the gap is provided (Para 0052). 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 machine of Down, with a filler to be applied into the gap is provided, as disclosed by Ueda, to prevent the movement of the conductors due to vibration. Allowable Subject Matter Claims 1-4, and 7-13 allowed. The following is an examiner’s statement of reasons for allowance: As to claim 1, Down discloses a rotating electric machine comprises a rotor and a stator (Para 0016), wherein the stator has a stator coil extending in an axial direction (Fig. 4), an insulating member enclosing the stator coil (Fig. 4), and an annular stator core in which a plurality of slots into which the stator coil enclosed by the insulating member are inserted are formed (Fig. 4; Para 0003), in the stator core, a channel for introducing a cooling medium into each of the plurality of slots are formed (Fig. 4), and in the insulating member (Fig. 4), an introduction opening for guiding the cooling medium introduced into a slot (Fig. 4), among the plurality of slots, to a space enclosed by the insulating member is provided (Fig. 4), wherein the insulating member has, along the axial direction, a first region where the introduction opening is provided and a second region where the introduction opening is not provided (Fig. 4), in the first region, a gap is provided between the insulating member and the stator coil (Fig. 4). PNG media_image1.png 339 315 media_image1.png Greyscale PNG media_image2.png 353 391 media_image2.png Greyscale Ueda discloses a filler to be applied into the gap is provided. Down fails to disclose the filler forms a second channel through which the cooling medium guided from the introduction opening flows in the axial direction, the second channel communicating with the gap provided in the first region. Claims 2-4, and 7-13 are allowed for similar reasons. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” 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 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

Feb 26, 2024
Application Filed
Dec 29, 2025
Non-Final Rejection mailed — §103
Mar 17, 2026
Response Filed
May 07, 2026
Final Rejection mailed — §103
Jul 20, 2026
Examiner Interview Summary
Jul 20, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683465
ROTARY ELECTRIC MACHINE
3y 3m to grant Granted Jul 14, 2026
Patent 12676536
STATOR AND STATOR SEALING METHOD
3y 3m to grant Granted Jul 07, 2026
Patent 12658742
ELECTRIC MACHINE
2y 3m to grant Granted Jun 16, 2026
Patent 12627194
COOLING CHANNEL STRUCTURE OF A MOTOR
2y 10m to grant Granted May 12, 2026
Patent 12627187
ROTOR OF AN ELECTRIC ASYNCHRONOUS MACHINE AND METHOD FOR ITS PRODUCTION
2y 7m to grant Granted May 12, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
75%
Grant Probability
86%
With Interview (+10.8%)
2y 6m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 52 resolved cases by this examiner. Grant probability derived from career allowance rate.

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