Prosecution Insights
Last updated: April 17, 2026
Application No. 17/921,575

BATTERY CHARGING SYSTEM

Non-Final OA §102
Filed
Oct 26, 2022
Examiner
GRANT, ROBERT J
Art Unit
2859
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
unknown
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
94%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
587 granted / 771 resolved
+8.1% vs TC avg
Strong +17% interview lift
Without
With
+17.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
30 currently pending
Career history
801
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
60.6%
+20.6% vs TC avg
§102
31.5%
-8.5% vs TC avg
§112
5.6%
-34.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 771 resolved cases

Office Action

§102
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 § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-7 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zhang et. al (USPUB 2018/0034282). As to Claim 1, Zhang discloses a battery charging system comprising: a battery module including a plurality of rechargeable batteries (Figure 7, Element 228); and a charger connected to the battery module for charging (Element 212), wherein when the battery module and the charger are connected, the plurality of rechargeable batteries are disconnected from each other to receive external power separately from the charger (Element 216). As to Claim 2, Zhang discloses the system of claim 1, wherein battery module comprising: a supply line connected to a plurality of rechargeable batteries in series; a charging port connected to the charger; and a plurality of charging lines extended to the plurality of rechargeable batteries from the charging port (Element 204). As to Claim 3, Zhang discloses the system of claim 2, wherein the supply line provided with a plurality of disconnection switches for disconnecting the plurality of rechargeable batteries from each other, and in each of the plurality of charging lines, a connection switch is provided, which allows current to flow to the rechargeable battery (Elements 220). As to Claim 4, Zhang discloses the system of claim 2, wherein the battery module further comprising a bypass line maintaining an electric connection of a power drive device with the battery module when the battery module is connected to the charger, wherein the bypass line is provided with a bypass rechargeable battery (Element 220, bypasses charge port). As to Claim 5, Zhang discloses the system of claim 2, wherein the charging port is provided with a plurality of charging terminals connected to any one end of the plurality of charging lines, and the charger includes a charging plug engaged to the charging port, wherein the charging plug is provided with a plurality of charging tips connected to any one of the plurality of charging terminals (Element 216). As to Claim 6, Zhang discloses the system of claim 5, wherein the charging port is formed in a cup shape, and the charging plug is formed in a column shape (Element 216). As to Claim 7, Zhang discloses the system of claim 6, wherein the charger further comprising a lifting device that allows the plurality of charging tips to protrude toward the plurality of charging terminals while the charging plug is inserted into the charging port (Element 216). Allowable Subject Matter Claim 8 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT J GRANT whose telephone number is (571)270-5820. The examiner can normally be reached Monday - Friday 9am - 5:30pm. 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, Drew Dunn can be reached at (571)272-2312. 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 GRANT/Primary Examiner, Art Unit 2859
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Prosecution Timeline

Oct 26, 2022
Application Filed
Sep 29, 2025
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603512
WEARABLE CHARGER ASSEMBLY
2y 5m to grant Granted Apr 14, 2026
Patent 12596154
BATTERY SYSTEM AND METHOD FOR CONTROLLING A BATTERY SYSTEM
2y 5m to grant Granted Apr 07, 2026
Patent 12592573
HYBRID GENERATOR WITH DETACHABLE POWER UNIT AND PANEL INTEGRATION
2y 5m to grant Granted Mar 31, 2026
Patent 12573863
MULTI-LEVEL MITIGATION SYSTEM AND METHOD FOR MANAGING AN EMERGENCY BATTERY CONDITION BASED ON SEVERITY
2y 5m to grant Granted Mar 10, 2026
Patent 12556017
ADVANCED BATTERY CHARGING ON MODULAR LEVELS OF ENERGY STORAGE SYSTEMS
2y 5m to grant Granted Feb 17, 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
76%
Grant Probability
94%
With Interview (+17.4%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 771 resolved cases by this examiner. Grant probability derived from career allow rate.

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