Prosecution Insights
Last updated: July 17, 2026
Application No. 18/384,605

ENERGY STORAGE APPARATUS

Non-Final OA §103
Filed
Oct 27, 2023
Priority
May 09, 2022 — CN 202221088144.3 +1 more
Examiner
HESS, DANIEL A
Art Unit
Tech Center
Assignee
Contemporary Amperex Technology Co., Limited
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
1004 granted / 1252 resolved
+20.2% vs TC avg
Moderate +7% lift
Without
With
+7.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
38 currently pending
Career history
1266
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
73.4%
+33.4% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
5.7%
-34.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1252 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 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 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 1-17 are rejected under 35 U.S.C. 103 as being unpatentable over Liu et al. (CN 108 336 783 A) in view of Shang et al. (CN 112 865 262 A) and Zhao et al. (CN 111 431 231 A). The examiner notes that these references were cited in the European search report of corresponding PCT/CN2022108957. The examiner has reviewed that search report and finds the rejection of the claims to be appropriate and useable hereinbelow. That search report is therefore heavily excerpted below. Re claim 1: Liu et al. discloses: An energy storage apparatus (Fig. 1), wherein the energy storage apparatus comprises a control circuit (Fig. 1, item "control unit"), multiple battery clusters (Fig. 1, items "battery cluster") connected in parallel (Fig. 1), and switch circuits (Fig. 1, items KM1, precharge resistor and KM3) corresponding to the battery clusters (Fig. 1, items "battery cluster"), wherein the switch circuit (Fig. 1, items KM1, precharge resistor and KM3) comprises a first switch (Fig. 1, item KM1) and a protection circuit (Fig. 1, items precharge resistor and KM3) connected in parallel; the control circuit (Fig. 1, item "control unit") is connected (paragraph [0027]) to each first switch (Fig. 1, items KM1) and each protection circuit (Fig. 1, items precharge resistor and KM3); each battery cluster (Fig. 1, items "battery cluster") is connected (paragraph [0026]) to the corresponding first switch (Fig. 1, items KM1) and protection circuit (Fig. 1, items precharge resistor and KM3); and the control circuit (Fig. 1, item "control unit") is configured to control (Fig. 2 and paragraph [0034] - paragraph [0047]), according to a high voltage on signal (Fig. 2, steps Z06 and Z07), the protection circuit (Fig. 1, items precharge resistor and KM3) to be closed and the first switch (Fig. 1, item KM1) to be opened (paragraph [0050]). Re claims 2 and 13: See Liu et al., Fig. 1, items precharge resistor and KM3. Re claim 3: See Liu et al., Fig. 1, items KM2. Re claims 4 and 5: The use of a regulator which could be bypassed has already been employed for the same purpose in a similar energy storage apparatus (see Shang et al., Fig. 2). It would be obvious to the person skilled in the art, namely when the same result is to be achieved, to apply these features with corresponding effect (i.e. preventing the battery stack to be damaged due to a voltage difference between battery clusters (see document SHANG ET AL., paragraph [0035]) to an energy storage apparatus according to document LIU ET AL. Re claims 6 and 7: The additional features defined in claims 6 and 7 would be regarded by the skilled person as two of several straightforward possibilities which the skilled person would select, depending on the circumstances, without exercising inventive skill, in order to supply power to the control unit of a regulator. Re claim 8: See SHANG ET AL., Fig. 2. 4.6 Re claim 9: The use of an H-bridge would be regarded by the skilled person as one of of several straightforward possibilities which the skilled person would select, depending on the circumstances, without exercising inventive skill, in order to implement a DC/DC converter. Re claim 10: See ET AL., Fig. 1, items "control unit" and BMSs. Re claim 11: See LIU ET AL., Fig. 1, items V2, V3 and I. Re claims 12-15: See discussions above. Re claim 16: See discussion re claim 2 above. Re claim 17: See discussion re claim 3 above. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL A HESS whose telephone number is (571)272-2392. The examiner can normally be reached Monday through Friday, from 9 AM to 5 PM. 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, Michael G. Lee can be reached at (571)272-2398. 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. /DANIEL A HESS/Primary Examiner, Art Unit 2876
Read full office action

Prosecution Timeline

Oct 27, 2023
Application Filed
Jun 25, 2026
Non-Final Rejection mailed — §103 (current)

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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
80%
Grant Probability
88%
With Interview (+7.4%)
2y 3m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1252 resolved cases by this examiner. Grant probability derived from career allowance rate.

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