Prosecution Insights
Last updated: April 19, 2026
Application No. 18/420,818

DRIVING APPARATUS OF AN ELECTRICALLY ASSISTED BICYCLE

Non-Final OA §103
Filed
Jan 24, 2024
Examiner
JIN, GEORGE C.
Art Unit
3747
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Enerstro Tech Corp.
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
97%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allow Rate
387 granted / 459 resolved
+14.3% vs TC avg
Moderate +13% lift
Without
With
+12.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
29 currently pending
Career history
488
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
45.1%
+5.1% vs TC avg
§102
38.5%
-1.5% vs TC avg
§112
12.3%
-27.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 459 resolved cases

Office Action

§103
1DETAILED 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 is/are rejected under 35 U.S.C. 103 as being unpatentable over CN1 (CN110040209) in view of CN2 (CN108128400). Regarding claim 1, CN1 teaches A driving apparatus for an electrically assisted bicycle comprising: a motor (2 figure 1) located in a bottom bracket of the electrically assisted bicycle, wherein the motor comprising a tubular mandrel (211 figure 4) formed with a reduced section; an epicyclic gearing (3 figure 1 planetary gearset) comprising a reduced sun gear (31 figure 2) supported on the reduced section of the tubular mandrel; an annular supporting element (41 figure 2) connected to at least one chain ring (4 figure 1) of the electrically assisted bicycle; a left shaft (figure 4 right side where sprocket sits) extending throughout the tubular mandrel and comprising a left end connected to a crank of the electrically assisted bicycle, a right end (31 figure 4), and a reduced section extending throughout the reduced section of the tubular mandrel, wherein the right end (31 figure 4) is slenderer than the left end; a right shaft (1 figure 2 and left side figure 4 where motor sits) comprising a right end connected to another crank of the electrically assisted bicycle and a left end (211 figure 4 where connects with 31) connected to the right end of the left shaft so that the left and right shafts are rotatable together with each other; (see figure 2 planetary gearset 32) CN1 does not explicitly teach however CN2 teaches a first clutch arranged between the epicyclic gearing and the annular supporting element; and (5 figure 1) a second clutch arranged between the right shaft and the epicyclic gearing. (7 figure 1) It would have been obvious to one of ordinary skill in the art at the time of filing to modify CN1 based on the teachings of CN2 to teach a first clutch arranged between the epicyclic gearing and the annular supporting element; and a second clutch arranged between the right shaft and the epicyclic gearing. The motivation would be to avoid motor coil resistance around mutual inductance generated user and wasting physical strength (CN2 page 1 paragraph 2) Claim(s) 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over CN1 (CN110040209) in and CN2 (CN108128400) in view of Wagner (GB2146932) Regarding claim 2, CN1 and CN2 do not explicitly teach however Wagner teaches wherein the right end of the left shaft is a square, wherein the right shaft comprises a left end formed with a square bore for receiving the right end of the left shaft (page 2 column 2 line 72-85 square bore 27). It would have been obvious to one of ordinary skill in the art at the time of filing to modify CN1 and CN2 based on the teachings of Wagner to teach wherein the right end of the left shaft is a square, wherein the right shaft comprises a left end formed with a square bore for receiving the right end of the left shaft. The motivation would be to assist in easy assembly Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to GEORGE C. JIN whose telephone number is (571)272-9898. The examiner can normally be reached 9AM-6PM. 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, Lindsay Low can be reached at (571) 272-1196. 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. /GEORGE C JIN/Primary Examiner, Art Unit 3747
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Prosecution Timeline

Jan 24, 2024
Application Filed
Feb 11, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600429
UNIVERSAL ROTATION FRONT STEERING FOR A RIDING DEVICE
2y 5m to grant Granted Apr 14, 2026
Patent 12600368
ZONAL ARCHITECTURE FOR VEHICLE
2y 5m to grant Granted Apr 14, 2026
Patent 12600327
DRIVING ASSISTANCE APPARATUS, DRIVING ASSISTANCE METHOD, AND NON-TRANSITORY STORAGE MEDIUM
2y 5m to grant Granted Apr 14, 2026
Patent 12594939
VEHICLE CONTROL APPARATUS AND METHOD, AND STORAGE MEDIUM
2y 5m to grant Granted Apr 07, 2026
Patent 12589719
REMOTE CONTROL OF A BRAKE CONTROLLER FOR A TOWED VEHICLE
2y 5m to grant Granted Mar 31, 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
84%
Grant Probability
97%
With Interview (+12.8%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 459 resolved cases by this examiner. Grant probability derived from career allow rate.

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