Prosecution Insights
Last updated: May 29, 2026
Application No. 18/620,440

ROTATING ELECTRIC MACHINE SYSTEM

Non-Final OA §103§112
Filed
Mar 28, 2024
Priority
Mar 30, 2023 — JP 2023-054554
Examiner
TRUONG, THOMAS
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Honda Motor Co. Ltd.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
931 granted / 1272 resolved
+5.2% vs TC avg
Strong +16% interview lift
Without
With
+16.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
28 currently pending
Career history
1307
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
87.5%
+47.5% vs TC avg
§102
4.1%
-35.9% vs TC avg
§112
7.0%
-33.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1272 resolved cases

Office Action

§103 §112
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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. 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 1-7 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. Claim 1 recites the limitation "the stator flow" in line 6. There is insufficient antecedent basis for this limitation in the claim. For examination purpose, limitation “the stator flow” being interpreted as “the stator Claim 4 recites the limitation "the rotating electric machine flows" in lines 3, 4. There is insufficient antecedent basis for this limitation in the claim. Claims 2-7 are rejected for their dependency on claim 1. Claims 5-7 are also rejected for their dependency on claim 4. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3 are rejected under 35 U.S.C. 103 as being unpatentable over Bradfield (US 2020/0389070 A1) in view of Takenaka et al. (US 2010/0045125 A1). RE claim 1, Bradfield teaches a rotating electric machine system equipped with a rotating electric machine 10 (Figs.1, 2) including a rotor 12 and a stator 14, and a housing 15 in which the rotating electric machine 10 is accommodated (Fig.2), wherein the housing 15 includes a stator chamber in which the stator 14 is accommodated and through which a liquid coolant configured to cool the stator flows 14 (see ¶ 20), and the stator 14 comprises: a stator core 16; a coil unit 20 including a plurality of electromagnetic coils 20 formed by a plurality of conductive wires 20 that are wound around the stator core 16, and a coil end portion (24, 28) (Fig.1) serving as end parts 24, 28 of the plurality of electromagnetic coils 20; and a neutral point terminal 134 (Fig.1 and ¶ 26) provided for a neutral point (¶ 26) that is formed by terminal ends of the plurality of conductive wires 20 that are pulled out from the coil unit (see ¶ 26 and Fig.8 for neutral bar 134 connect with selected one of windings 20), and wherein the rotating electric machine system includes a partition member (44, 46), the partition member 46 includes a first wall surface 151 that forms one portion of an inner surface of the stator chamber, and faces toward an end part of the coil end portion (24, 28) in the axial direction (Fig.1), and a concave portion that is formed in the first wall surface 151 and is recessed in a direction to separate away from the coil end portion, and a bottom surface (of wall 151) of which is formed by one portion of the first wall surface, and a liquid coolant flow path 157 (Fig.1) through which the liquid coolant flows is formed between the neutral point terminal 134 and the bottom surface of the concave portion (of wall 151) (¶ 27, 28). Bradfield does not teach the rotor includes a rotating shaft, the rotating shaft extending in an axial direction and wherein the partition member accommodated in the housing and being a separate body from the housing. Takenaka teaches the rotor (R) includes a rotating shaft (A) (¶ 42), the rotating shaft (A) extending in an axial direction and wherein the partition member 40 accommodated in the housing (MC1, MC2) and being a separate body from the housing (MC1, MC2) (see Figs.1, 2), doing so provided an insulating space/distance between the coil end and housing, such structure also eliminate the need to provide new space for disposing the oil jacket. As a result, an increase in the size of the rotary electric machine M can be prevented (¶ 55). The shaft allows the rotor to be rotatable relative to the stator/housing (¶ 42). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify Bradfield by having the rotor includes a rotating shaft, the rotating shaft extending in an axial direction and wherein the partition member accommodated in the housing and being a separate body from the housing, as taught by Takenaka, for the same reasons as discussed above. RE claim 2/1, Bradfield in view of Takenaka has been discussed above. Bradfield further teaches the bottom surface of the concave portion (of partition member 46) has a shape (round shape) corresponding to a shape of the neutral point terminal 134 (Figs.8, 9). RE claim 3/2, Bradfield in view of Takenaka has been discussed above. Bradfield further the neutral point terminal 134 includes a first curved surface (Fig.8), and the bottom surface of the concave portion (of partition wall 46) includes a second curved surface (Fig.9) that is curved corresponding to a shape of the first curved surface of the neutral point terminal 134. Allowable Subject Matter Claims 4-7 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. RE claim 4/1, the prior-art does not teach, inter alia, the housing includes a gaseous coolant flow path through which a gaseous coolant configured to cool the rotating electric machine flows, and the partition member includes a second wall surface which is a rear surface of the first wall surface, and the second wall surface forms one portion of an inner surface of the gaseous coolant flow path. Claims 5-7 are allowable for their dependency on claim 4. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to THOMAS TRUONG whose telephone number is (571)270-5532. The examiner can normally be reached Monday-Friday 9AM-6PM EST. 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, Seye Iwarere can be reached at (571) 270-5112. 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. /THOMAS TRUONG/Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Mar 28, 2024
Application Filed
Feb 27, 2026
Non-Final Rejection mailed — §103, §112
Apr 29, 2026
Interview Requested
May 05, 2026
Applicant Interview (Telephonic)
May 05, 2026
Examiner Interview Summary
May 07, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12640629
METHOD FOR MANUFACTURING ROTOR, ROTOR, DRIVE APPARATUS, AND END PLATE
2y 7m to grant Granted May 26, 2026
Patent 12640603
MAGNETIC FLUX REDUCING CIRCUITS FOR MITIGATING MAIN BEARING CURRENT IN ELECTRIC MOTORS AND GEARBOXES
2y 6m to grant Granted May 26, 2026
Patent 12640604
ROTOR AND ROTATING ELECTRIC MACHINE
2y 5m to grant Granted May 26, 2026
Patent 12640605
ROTOR FOR A ROTARY ELECTRIC MACHINE
2y 9m to grant Granted May 26, 2026
Patent 12633788
ROTOR AND MOTOR
2y 3m to grant Granted May 19, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
73%
Grant Probability
89%
With Interview (+16.1%)
2y 8m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1272 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month