Prosecution Insights
Last updated: July 17, 2026
Application No. 18/748,068

MOTOR ROTOR, MOTOR, POWER ASSEMBLY, AND ELECTRIC APPARATUS

Non-Final OA §103
Filed
Jun 19, 2024
Priority
Apr 17, 2023 — CN 202310410773.6 +1 more
Examiner
MATES, ROBERT E
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Contemporary Amperex Technology Co., Limited
OA Round
1 (Non-Final)
56%
Grant Probability
Moderate
1-2
OA Rounds
1y 0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
259 granted / 459 resolved
-11.6% vs TC avg
Strong +36% interview lift
Without
With
+35.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
30 currently pending
Career history
492
Total Applications
across all art units

Statute-Specific Performance

§103
92.6%
+52.6% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
2.1%
-37.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 459 resolved cases

Office Action

§103
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. Election/Restrictions Claims 8-12 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected embodiments, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 4/13/2026. Specification The title of the invention is not descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. The following title is suggested: MOTOR ROTOR WITH MAGNET IN FRAME, MOTOR, POWER ASSEMBLY, AND ELECTRIC APPARATUS. 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. 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. Claim(s) 1-7, 13, 15-17, 20 are rejected under 35 U.S.C. 103 as being unpatentable over Li (CN 111884456 A) in view of Gong et al. (US 2017/0279321 A1, hereinafter Gong). As to claim 1, Li shows (FIG. 1, 5, 8) A motor rotor, comprising: a mounting frame 1; and a magnet 4,5 mounted to the mounting frame 1, wherein the mounting frame 1 is provided with a limiting wall 8 for resisting a centrifugal movement of the magnet 4,5 in a radial direction (para [0040]; motor para [0051]). Li does not show the magnet is magnet steel. Gong shows the magnet is magnet steel (para [0012]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the magnet of Li to have the magnet is magnet steel as taught by Gong, for the advantageous benefits of the magnet steel having a high remanent magnetism and a high coercive force as taught by Gong (para [0012]). As to claim 2/1, Li in view of Gong was discussed above with respect to claim 1 and Li further shows (as modified) wherein the mounting frame 1 is provided with a plurality of mounting regions 10,11 distributed in the radial direction, the magnet steel 4,5 being mounted in the plurality of mounting regions 10,11, at least one of the plurality of mounting regions 10,11 being provided with the limiting wall 8. As to claim 3/2/1, Li in view of Gong was discussed above with respect to claim 2 and Li further shows (as modified) wherein a separator 7 is provided between two mounting regions 10,11 adjacent to each other in the radial direction, a wall surface of the separator 7 facing towards a central axis 2 of the mounting frame 1 being the limiting wall. As to claim 4/3/2/1, Li in view of Gong was discussed above with respect to claim 3 and Li further shows (as modified) wherein each of the plurality of mounting regions 10,11 adjacent to each other in the radial direction is provided with a magnet steel groove, the magnet steel groove having the limiting wall 8; wherein the separator 7 is provided between two adjacent magnet steel grooves, the wall surface of the separator 7 facing towards the central axis 2 of the mounting frame 1 being the limiting wall of the magnet steel groove located at an inner side of the separator 7 in the radial direction. As to claim 5/2/1, Li in view of Gong was discussed above with respect to claim 2 and Li further shows (as modified) wherein each of the plurality of mounting regions 10,11 is provided with the limiting wall 8, the limiting walls 7,8 of the plurality of mounting regions 10,11 being distributed at intervals in the radial direction. As to claim 6/2/1, Li in view of Gong was discussed above with respect to claim 2 and Li further shows (as modified) wherein at least one of the plurality of mounting regions 10,11 are provided with a magnet steel groove, the magnet steel groove having the limiting wall 7,8. As to claim 7/6/2/1, Li in view of Gong was discussed above with respect to claim 6 and Li further shows (FIG. 5 as modified) wherein the magnet steel 4,5 has a profile matched with the limiting wall 7,8 of the magnet steel groove. As to claim 13/1, Li in view of Gong was discussed above with respect to claim 1 and Li further shows (as modified) wherein the magnet steel 4,5 is provided on a surface of the mounting frame 1 in the axial direction, and wherein the mounting frame 1 is provided with the limiting wall 7,8 located at an outer side of the magnet steel 4,5 in the radial direction. As to claim 15/1, Li in view of Gong was discussed above with respect to claim 1 and Li further shows (as modified) wherein a plurality of magnet steels 4,5 are provided and distributed in sequence along a circumferential direction on the mounting frame 1; and wherein the mounting frame 1 further comprises a plurality of limiting structures 9 distributed in sequence along the circumferential direction, each of the plurality of magnet steels 4,5 being located between two limiting structures 9 of the plurality of limiting structures 9 that are adjacent to each other in the circumferential direction (para [0040]). As to claim 16/1, Li in view of Gong was discussed above with respect to claim 1 and Li further shows (as modified) wherein the magnet steel 4,5 is fixedly connected to the mounting frame 1 (by glue para [0065],[0069]). As to claim 17/16/1, Li in view of Gong was discussed above with respect to claim 16 and Li further shows (as modified) wherein the magnet steel 4,5 is in an interference fit with the mounting frame; and/or the magnet steel is in an injection-molded connection with the mounting frame; and/or the magnet steel is adhesively fixed to the mounting frame 1 (glue para [0065],[0069]). As to claim 20/1, Li in view of Gong was discussed above with respect to claim 1 and Li further shows (as modified) A motor, comprising the motor rotor according to claim 1 (motor para [0051]). Claim(s) 14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Li (CN 111884456 A) in view of Gong et al. (US 2017/0279321 A1, hereinafter Gong) and Moore et al. (US 2018/0138767 A1, hereinafter Moore). As to claim 14/1, Li in view of Gong was discussed above with respect to claim 1 except for the mounting frame is a permeability magnetic material component or a non-permeability magnetic material component. Moore shows the rotor disk 364 is formed of a laminated magnetic metal to (para [0063]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the mounting frame 1 of Li in view of Gong to have the mounting frame 1 is a permeability magnetic material component or a non-permeability magnetic material component as taught by Moore, for the advantageous benefit of optimizing the magnetic reluctance path as taught by Moore (para [0063]). Claim(s) 18 is/are rejected under 35 U.S.C. 103 as being unpatentable over Li (CN 111884456 A) in view of Gong et al. (US 2017/0279321 A1, hereinafter Gong) and Koeda (US 20210167676 A1). As to claim 18/1, Li in view of Gong was discussed above with respect to claim 1 except for a protective component, the magnet steel being exposed to one side or both sides of the mounting frame in an axial direction, the protective component being arranged on a side of the mounting frame to which the magnet steel is exposed. Koeda shows (FIG. 2, 3) a protective component 91, the magnet 6 being exposed to one side or both sides of the mounting frame 3 in an axial direction, the protective component 91 being arranged on a side of the mounting frame 3 to which the magnet 6 is exposed (para [0020],[0038],[0039]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the mounting frame 1 of Li in view of Gong to have a protective component 91, the magnet steel 4,5 being exposed to one side or both sides of the mounting frame 1 in an axial direction, the protective component 91 being arranged on a side of the mounting frame 1 to which the magnet steel 4,5 is exposed as taught by Koeda, for the advantageous benefits of suppression of bending and torsional deformation as taught by Koeda (para [0040]). Claim(s) 21 is rejected under 35 U.S.C. 103 as being unpatentable over Li (CN 111884456 A) in view of Gong et al. (US 2017/0279321 A1, hereinafter Gong) and Takezaki et al. (US 2017/0054336 A1, hereinafter Takezaki). As to claim 21/20/1, Li in view of Gong was discussed above with respect to claim 20 except for a power assembly, comprising the motor according to claim 20. Takezaki shows a power assembly, comprising a motor (electric vehicle para [0002]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the motor of Li in view of Gong to have a power assembly, comprising the motor according to claim 20 as taught by Takezaki, for the advantageous benefits of using the motor in a vehicle to provide commuter travel as taught by Takezaki (para [0002]). Allowable Subject Matter Claim 19 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: the prior art does not show or suggest the protective component with the positioning groove for a magnet. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT E MATES whose telephone number is (571)270-5293. The examiner can normally be reached M to F 12:00pm to 8pm. 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. /ROBERT E MATES/Examiner, Art Unit 2834 /TULSIDAS C PATEL/Supervisory Patent Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Jun 19, 2024
Application Filed
Jul 01, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683441
AIRGAP COOLING SYSTEM FOR AN ELECTRIC MACHINE
3y 6m to grant Granted Jul 14, 2026
Patent 12665471
ELECTRIC DRIVE ASSEMBLY WITH COOLING
2y 5m to grant Granted Jun 23, 2026
Patent 12665472
MOTOR UNIT HAVING FLOW GENERATING UNIT TO DELIVER AIR INTO A ROTOR GAP TO REDUCE FRICTION
2y 8m to grant Granted Jun 23, 2026
Patent 12658754
STATOR AND MOTOR
4y 2m to grant Granted Jun 16, 2026
Patent 12658745
STATOR ASSEMBLY, MOTOR AND VEHICLE
2y 8m to grant Granted Jun 16, 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
56%
Grant Probability
92%
With Interview (+35.8%)
3y 1m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 459 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