Prosecution Insights
Last updated: April 19, 2026
Application No. 18/228,372

END COVER ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

Non-Final OA §102§Other
Filed
Jul 31, 2023
Examiner
ALEJANDRO, RAYMOND
Art Unit
1752
Tech Center
1700 — Chemical & Materials Engineering
Assignee
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
3y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
913 granted / 1153 resolved
+14.2% vs TC avg
Strong +22% interview lift
Without
With
+22.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
55 currently pending
Career history
1208
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
36.6%
-3.4% vs TC avg
§102
27.8%
-12.2% vs TC avg
§112
24.1%
-15.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1153 resolved cases

Office Action

§102 §Other
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Information Disclosure Statement The information disclosure statement (IDS) submitted on 07/31/23 and 12/11/24 was considered by the examiner. The third party submission dated 12/16/24 has been considered. Drawings The drawings were received on 07/31/23. 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. Claim(s) 1-5 are rejected under 35 U.S.C. 102a1 as being anticipated by the publication CN 209880668 (heretofore CN’668) (for citation purposes, its English language counterpart Huang et al 2022/0123417 is being used). As to claims 1, 5: Huang et al (CN’668) discloses that it is known in the art to make a top cover assembly 1 comprising a top cover sheet (applicant’s end cover assembly) 11 for a battery cell wherein a top cover sheet 11 (taken to represent applicant’s structurally undefined pressure relief member) includes an explosion-proof hole 111, a protrusion 112, an explosion-proof sheet 12, a fixing member 13, first/second grooves 131, 132 (applicant’s indentation) and a protective sheet 14 (0070-0078; see Figures 2, 7 & 9-10). In Huang et al (CN’668) the top cover sheet (applicant’s end cover assembly) is capable of rupturing/breaking when gas pressure inside the battery cell exceeds a threshold value (0070-0078). Huang et al (CN’668) teaches the fixing member 13 is of a split structure (see Figure 7) so that when the internal temperature of the secondary battery reaches a certain value, the fixing member 13 can be melted, so that the explosion proof sheet 12 falls off; and when the internal pressure of the secondary battery reaches a certain value, the explosion proof sheet 12 can be broken (0086). As to claims 2-5: PNG media_image1.png 360 432 media_image1.png Greyscale PNG media_image2.png 354 374 media_image2.png Greyscale PNG media_image3.png 298 478 media_image3.png Greyscale PNG media_image4.png 294 436 media_image4.png Greyscale As to claims 2-5: Huang et al (CN’668) teaches the explosion proof sheet 12 may be made of aluminum (0086). Huang et al (CN’668) discloses the use of steel to make the top cover sheet (0070; 0066). Examiner’s note: since Huang et al (CN’668) teach the use of aluminum and steel to make the foregoing components/elements, respectively, it is deemed that the specific melting point and melting point relation between the explosion proof sheet 12 (i.e., applicant’s pressure relief member) and a top cover assembly 1 (applicant’s end cover) is satisfied as such the specific melting point are inherent properties of the materials disclosed by Huang et al (CN’668). Thus, the present claims are anticipated. Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: a detailed search for the prior art failed to reveal or fairly suggest what is instantly claimed, in particular: the cover assembly for battery comprising all of the claimed components/elements satisfying the specific structural and functional interrelationship as recited in dependent claim 6. Claim 6 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. Note that clams 7-20 are also allowable by virtue of their dependency upon clam 6. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RAYMOND ALEJANDRO whose telephone number is (571)272-1282. The examiner can normally be reached Monday-Thursday (8:00 am-6:30 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, Nicholas A. Smith can be reached at (571) 272-8760. 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. /RAYMOND ALEJANDRO/ Primary Examiner Art Unit 1752
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Prosecution Timeline

Jul 31, 2023
Application Filed
Feb 09, 2026
Non-Final Rejection — §102, §Other (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12597665
BATTERY PACK
2y 5m to grant Granted Apr 07, 2026
Patent 12592420
BATTERY MANAGEMENT SYSTEM WITH SYNCHRONIZED WAKE-UP SIGNAL RECEPTION PERIOD AND COMMUNICATION METHOD THEREOF
2y 5m to grant Granted Mar 31, 2026
Patent 12592430
Battery Pack and Vehicle Comprising the Same
2y 5m to grant Granted Mar 31, 2026
Patent 12586839
BATTERY MODULE WITH IMPROVED COOLING PERFORMANCE, BATTERY DEVICE INCLUDING SAID BATTERY MODULE, AND METHOD FOR MANUFACTURING SAID BATTERY MODULE
2y 5m to grant Granted Mar 24, 2026
Patent 12580201
ELECTRODE HAVING HIGH OXYGEN PERMEABILITY FOR FUEL CELL AND MEMBRANE-ELECTRODE ASSEMBLY COMPRISING SAME
2y 5m to grant Granted Mar 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
79%
Grant Probability
99%
With Interview (+22.5%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 1153 resolved cases by this examiner. Grant probability derived from career allow rate.

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