Prosecution Insights
Last updated: May 29, 2026
Application No. 18/370,576

ELECTRIC PARKING BRAKE DEVICE

Non-Final OA §103
Filed
Sep 20, 2023
Priority
Mar 30, 2018 — JP 2018-068037 +2 more
Examiner
WILLIAMS, THOMAS J
Art Unit
3616
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Hitachi Astemo, Ltd.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
1096 granted / 1395 resolved
+26.6% vs TC avg
Moderate +14% lift
Without
With
+14.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
40 currently pending
Career history
1449
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
65.8%
+25.8% vs TC avg
§102
14.8%
-25.2% vs TC avg
§112
15.7%
-24.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1395 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 . 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. Claim(s) 1 and 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over JP 2017-083010 A to Iwata et al. in view of US 3,065,007 to Colmer, Jr. Re-claim 1, Iwata et al. teach a electric parking brake device comprising: a screw shaft 142a is connected to a brake cable 82; an actuator case 111 supports the screw shaft movably in an axial direction thereof; an electric motor 121 is supported by the actuator case rotatably forward and backward; a motion conversion mechanism (at least 131 with 132 and 141) includes a nut 141 screwed (or threaded) onto the screw shaft 142a (see figure 9), this connection enables conversion from a rotational motion generated in the electric motor to a linear motion of the screw shaft, the structure is accommodated in the actuator case; a rotation restricting device (connection between 152B and groove 113c, figure 9) restricts a rotational motion of the screw shaft, switching between pulling the brake cable and loosening the brake cable is performed by a change in a rotational direction of the electric motor. Iwata et al. is silent regarding the formation of the brake cable, such as by twisting a plurality of wires, the direction of twisting is rotational direction of the nut when the brake cable is pulled. Colmer, Jr. teach a cable pull device in which a winding direction, or twisting direction of the cable strands are the same as a rotational direction of a buckle (interpreted as a rotating nut, such as 9, which is equivalent to the rotating yet stationary nut of Iwata et al.). The nut 15 in Colmer, Jr. is functionally equivalent to the screw shaft of Iwata et al., as each is kept from rotation, but translated when pulling the cable. This leaves the buckle of Colmer, Jr. as being functionally equivalent to the nut in Iwata et al. The purpose of the twisting direction matching the nut rotation direction is to insure that a tension in the cable will appear as the buckle (or nut of Iwata) is rotated (see column 2 lines 24-27). As such it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have formed the cable of Iwata et al. with a plurality of wires twisted in a same rotating direction as the nut when the cable is pulled as taught by Colmer, Jr., thus insuring a tension is generated in the cable when pulled by the rotating nut. Re-claim 2, the rotation restricting device 152B/113c includes a plurality of rotation restricting projection portions (as on opposing sides of 152B, see the presence of at least two grooves 113c, figure 9) that are provided in an end portion of the screw shaft opposite to the brake cable and radially project from the screw shaft, and a plurality of rotation restricting grooves that is formed in the actuator case 111 entered by the rotation restricting projection portions. See page 6 paragraph 6 “the support member 152B partially protrudes in the radial direction at a plurality of locations in the circumferential direction, and the protruding portion is formed in a groove”. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Kikuta, Bach and JP ‘242 each teach an electric brake with a motor aligned along the screw and nut arrangement. Winkler teaches an electric brake. Any inquiries concerning this communication or earlier communications from the examiner should be directed to Thomas Williams whose telephone number is 571-272-7128. The examiner can normally be reached on Tuesday-Friday from 6:00 AM to 4:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Robert Siconolfi, can be reached at 571-272-7124. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Any inquiry of a general nature or relating to the status of this application or proceeding should be directed to the receptionist whose telephone number is 571-272-6584. TJW December 19, 2025 /THOMAS J WILLIAMS/Primary Examiner, Art Unit 3616
Read full office action

Prosecution Timeline

Sep 20, 2023
Application Filed
Dec 19, 2025
Non-Final Rejection (signed) — §103
Feb 10, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12637051
HYDRAULIC CONTROL UNIT AND HYDRAULIC MOTOR VEHICLE BRAKING SYSTEM
3y 6m to grant Granted May 26, 2026
Patent 12637046
BRAKE CONTROL SYSTEM AND BRAKE CONTROL METHOD
3y 1m to grant Granted May 26, 2026
Patent 12612023
HYDRAULIC CONTROL UNIT, BRAKING SYSTEM, AND CONTROL METHOD
3y 5m to grant Granted Apr 28, 2026
Patent 12601388
TORQUE TRANSMISSION DEVICE
2y 11m to grant Granted Apr 14, 2026
Patent 12595833
SHOCK ABSORBER
4y 2m to grant Granted Apr 07, 2026
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
93%
With Interview (+14.1%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1395 resolved cases by this examiner. Grant probability derived from career allowance rate.

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