Prosecution Insights
Last updated: April 19, 2026
Application No. 18/331,598

WINDING NEEDLE SLEEVE, BATTERY UNIT, BATTERY, POWER CONSUMING DEVICE, AND WINDING DEVICE

Non-Final OA §102§103
Filed
Jun 08, 2023
Examiner
AKHTAR, KIRAN QURAISHI
Art Unit
1751
Tech Center
1700 — Chemical & Materials Engineering
Assignee
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
OA Round
1 (Non-Final)
65%
Grant Probability
Moderate
1-2
OA Rounds
3y 4m
To Grant
59%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allow Rate
221 granted / 341 resolved
At TC average
Minimal -6% lift
Without
With
+-5.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
21 currently pending
Career history
362
Total Applications
across all art units

Statute-Specific Performance

§103
59.8%
+19.8% vs TC avg
§102
23.5%
-16.5% vs TC avg
§112
14.5%
-25.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 341 resolved cases

Office Action

§102 §103
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 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 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) 1-3, 7-12 are is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Xiang et al. CN201038263 With respect to claim 1, Xiang et al. discloses a winding needle sleeve 3, a wall of the winding needle sleeve being provided with a through slot 30 extending through the wall, and the through slot 30 extending from one end to the other end of the winding needle sleeve, so as to allow expansion or contraction of the winding needle sleeve in a radial direction. [Figure 4; 0029-0040] PNG media_image1.png 368 512 media_image1.png Greyscale With respect to claim 2, Xiang et al. discloses wherein the through slot 30 extends linearly in an axial direction of the winding needle sleeve 3. [0014; 0030-0035] With respect to claim 3, Xiang et al. discloses wherein the wall of the winding needle sleeve 3 is further provided with a through hole 32 for an electrolyte to pass. [0015-0016] With respect to claim 7, Xiang et al. discloses a battery unit, comprising: an electrode assembly; and a winding needle sleeve according to claim 1, wherein the winding needle sleeve is placed in a central hole of the electrode assembly. [0030-0036; Figures 1-6; Abstract] With respect to claim 8, Xiang et al. discloses a battery, comprising a battery unit according to claim 7. [0030-0036; Figures 1-6; Abstract] With respect to claim 9, Xiang et al. discloses a power consuming device, comprising a battery according to claim 8, the battery being used for supplying power. [Abstract; 0001-0018] With respect to claim 10, Xiang et al. discloses a winding device [Figure 5], comprising: a driving mechanism 22; a winding needle 2; and a winding needle sleeve 3 according to claim 1, wherein the driving mechanism is used for driving the winding needle 2 to rotate, the winding needle sleeve 3 is sleeved on the winding needle 2, and the winding needle sleeve 3 is used for winding an electrode plate and a separator stacked to each other to form an electrode assembly [0026-0036; Figures 1-6]. With respect to claim 11, Xiang et al. discloses wherein the winding needle 2 comprises a second transmission portion 1/21, the second transmission portion is used for cooperating with the winding needle sleeve 3, such that the winding needle 2 drives the winding needle sleeve 3 to synchronously rotate. [0028-0035; Figures 1-6] With respect to claim 12, Xiang et al. discloses further comprising a compounding mechanism 1 for compounding the separator to the winding needle sleeve 3. [0026-0036; Figures 1-6]. 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. 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. Claim(s) 4-6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Xiang et al. CN201038263 as applied to claim 1 above in further view of Wang et al. CN101984515. With respect to claim 4, Xiang et al. does not disclose wherein the winding needle sleeve comprises a first transmission portion, the first transmission portion being used for cooperating with a winding needle such that the winding needle can drive the winding needle sleeve to synchronously rotate. Wang et al. discloses a winding needle sleeve 2, wherein the winding needle sleeve 2 comprises a first transmission portion, the first transmission portion being used for cooperating with a winding needle 1 such that the winding needle 1 can drive the winding needle sleeve 2 to synchronously rotate. [Abstract; Figure 1; 0008-0040] Therefore it would have been obvious to one of ordinary skill in the art as of the effective filing date of the invention to have modified the winding needle sleeve of Xiang et al., to include a first transmission portion, as disclosed in Wang et al., in order to reduce the internal resistance of the battery and to improve the high-current discharge performance of the battery With respect to claim 5, Xiang et al. does not disclose wherein the first transmission portion comprises at least one recess, the recess extending from an end face of the winding needle sleeve in an axial direction of the winding needle sleeve. Wang et al. discloses wherein the first transmission portion comprises at least one recess, the recess extending from an end face of the winding needle sleeve 2 in an axial direction of the winding needle sleeve 2. [Abstract; Figure 1; 0008-0040] Therefore it would have been obvious to one of ordinary skill in the art as of the effective filing date of the invention to have modified the winding needle sleeve of Xiang et al., to include a first transmission portion, as disclosed in Wang et al., in order to reduce the internal resistance of the battery and to improve the high-current discharge performance of the battery With respect to claim 6, Xiang et al. does not disclose wherein a plurality of recesses are provided, and the plurality of recesses are distributed at intervals about the central axis of the winding needle sleeve. Wang et al. discloses wherein a plurality of recesses are provided, and the plurality of recesses are distributed at intervals about the central axis of the winding needle sleeve 2. [Abstract; Figure 1; 0008-0040] Therefore it would have been obvious to one of ordinary skill in the art as of the effective filing date of the invention to have modified the winding needle sleeve of Xiang et al., to include a plurality of recesses, as disclosed in Wang et al., in order to reduce the internal resistance of the battery and to improve the high-current discharge performance of the battery Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIRAN QURAISHI AKHTAR whose telephone number is (571)270-7589. The examiner can normally be reached Monday-Thursday 9AM-7PM. 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, Jonathan Leong can be reached at 571-270-1292. 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. /KIRAN QURAISHI AKHTAR/Primary Examiner, Art Unit 1751
Read full office action

Prosecution Timeline

Jun 08, 2023
Application Filed
Jan 16, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Mar 17, 2026
Patent 12562424
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BATTERY STORAGE DEVICE AND OILING METHOD
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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
65%
Grant Probability
59%
With Interview (-5.5%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 341 resolved cases by this examiner. Grant probability derived from career allow rate.

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