Prosecution Insights
Last updated: October 02, 2026
Application No. 17/539,696

INSULATING FILM, BATTERY CELL, BATTERY AND POWER CONSUMPTION DEVICE

Non-Final OA §103
Filed
Dec 01, 2021
Priority
Jan 28, 2021 — continuation of PCTCN2021074158
Examiner
MELFI, OLIVIA MASON
Art Unit
1729
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Contemporary Amperex Technology Co., Limited
OA Round
5 (Non-Final)
57%
Grant Probability
Moderate
5-6
OA Rounds
0m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allowance Rate
27 granted / 47 resolved
-7.6% vs TC avg
Strong +27% interview lift
Without
With
+27.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
39 currently pending
Career history
82
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
67.4%
+27.4% vs TC avg
§102
11.8%
-28.2% vs TC avg
§112
18.8%
-21.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 47 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 . Examiner’s Note Applicant’s arguments filed on July 6th, 2026 have been fully considered and are persuasive. Accordingly, the 35 U.S.C. 103 rejection of Ochi in view of Nobuyuki, as set forth in the previous Office Action, has been withdrawn. New grounds of rejection over the prior art cited below are set forth. Response to Amendment In response to the amendment received on July 6th, 2026: Claims 1-5 and 8-17 are pending in the current application. Claims 1, 12, and 15-16 have been amended. Claims 6-7 have been cancelled. Claim 17 is newly added. The previous rejection under 35 USC 112 is overcome in light of the amendment. Claim Interpretation All “wherein” clauses are given patentable weight unless otherwise noted. Please see MPEP 2111.04 regarding optional claim language. Prior Art Previously cited Ochi US PG Publication 2013/0034764 (“Ochi”) Hair, Jared “How to Make Your Own Shipping Boxes” (“Hair”) Previously cited Unno US PG Publication 2017/0250388 (“Unno”) Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office Action. Claims 1-5 and 8-17 are rejected under 35 U.S.C. 103 as being unpatentable over Ochi US PG Publication 2013/0034764 in view of Hair, Jared “How to Make Your Own Shipping Boxes” and Unno US PG Publication 2017/0250388. Regarding Claims 1 and 15, Ochi discloses a method for producing a battery cell 1 ([0013]), comprising: providing the battery cell 1 ([0013]), providing an electrically insulating film 2, being configured to wrap a battery assembly (i.e. plurality of battery cells 1) ([0013]), wherein the insulating film 2 comprises a bottom coverage area (i.e. bottom surface covering portion 22), N side coverage areas (i.e. bottom and side surface covering portions 21, 23), and N pairs of bonding areas (i.e. connection areas 24 within the boundaries of 23x and 23y as defined by W6 and W7), N is 4 (which falls within and therefore anticipates the claimed range of an integer greater than 2) (Modified Fig. 21, [0013]-[0015]); the bottom coverage area 22 having N sides, and the N side coverage areas 21, 23 being respectively connected to the bottom coverage area 22 at the N sides, and can bend toward the bottom coverage area 22 along the N sides respectively (Figs. 22-24, [0013]); each pair of the N pairs of bonding areas 24 being located between two adjacent side coverage areas of the N side coverage areas 21, 23, and being connected to the two adjacent side coverage areas 21, 23 respectively; each pair of bonding areas 24 is configured to make the bottom coverage area 22 and the N side coverage areas 21, 23 form a space wrapping the battery assembly 1 by bonding surfaces on the same side of each pair of bonding areas when the N side coverage areas 21, 23 bend toward the bottom coverage area 24 (Modified Fig. 21, Figs. 22-24, [0013]), and using the insulating film 2 to wrap the battery cell 1 ([0013]). PNG media_image1.png 856 1415 media_image1.png Greyscale Modified Figure 21 of Ochi While Ochi discloses that the protruding widths of the side coverage areas can be narrower than the width of the side coverage area1, Ochi fails to explicitly disclose the width of the first bonding area. However, Hair discloses a method of cutting cardboard to cover a material (Intro). Hair teaches modifying the dimensions of the bonding area and corresponding side coverage areas to fit the desired material (Measure – Sketch). Additionally, Ochi discloses that wherein two side surface covering portions are bent toward one another during bonding, a wide side surface covering portion can cover, overlap, and bond with a narrow side surface covering portion along an exterior narrow side surface of the battery in order to create a seal that is able to be welded and made watertight around the battery and the wide side surface covering portion is capable of substantially covering the whole surface of the narrow side surface of the exterior battery container (Figs. 17-20, [0110]-[0113]). Therefore, it would have been obvious to a person having ordinary skill in the art prior to the effective filing date of the instant application to modify the insulating film of Ochi such that the widths of the bonding areas are optimized to fit the claimed battery assembly, including the instance wherein a width of a first bonding area in each pair of bonding areas is greater than a width of a second bonding area and less than one-half of the width of the side coverage area adjacent to the second bonding area, and after bonding, each pair of bonding areas can bend toward the side coverage area adjacent to the second bonding area along the narrow side surface of the battery, where the part that is not bonded with second bonding area in the first bonding area is configured to bond to the side coverage area adjacent to the second bonding area along the narrow in order to create a watertight seal around the battery, as taught by Ochi, and in order to fit the battery, as taught by Hair. While Ochi discloses that it is beneficial to cover surfaces of the rectangular battery cell with the insulating film 2 to effectively prevent short circuit between exterior containers of the rectangular battery cell adjacent to each other and leakage of current ([0012]), Ochi in view of Hair fails to explicitly disclose wherein a height of the side coverage area is higher than a height of the battery cell, the side coverage area extends beyond the battery cell in a height direction, and an extended area bends towards a cover plate of the battery cell and bonds with a surface of the cover plate. However, Unno discloses an insulating film for covering a battery container that provides insulating properties and watertightness to the outer surface of the battery and in which ends of the insulating film are overlapped with each other ([0007]-[0008]). Unno teaches extending the insulating film to cover at least a portion of the lid of the battery such that the insulating film can provide protection from dew condensation water to prevent a short circuit whether the batteries are in series or parallel (Fig. 11, [0094]-[0096]). Therefore, it would have been obvious to a person having ordinary skill in the art prior to the effective filing date of the instant application to modify the insulating film of Ochi in view of Hair to extend the height of at least a portion of the insulating film such that a height of the side coverage area is higher than a height of the battery cell, the side coverage area extends beyond the battery cell in a height direction, and an extended area bends towards a cover plate of the battery cell and bonds with a surface of the cover plate in order to provide protection from dew condensation water to prevent a short circuit whether the batteries are in series or parallel, as taught by Unno. 1 A change in proportion or relative dimension is obvious in the absence of unexpected results. In Gardner v. TEC Systems, Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 USPQ 232 (1984), the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. Regarding Claim 2, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 1, and Ochi discloses wherein each pair of the bonding areas 24 can respectively bend along the connecting side with the side coverage area 21, 23 to bond the surfaces on the same side of each pair of bonding areas 24 (Modified Fig. 21, [0013]). Regarding Claim 3, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 1, and Ochi discloses wherein N is 4 (Modified Fig. 21), and the insulating film is configured to wrap a cuboid shaped battery assembly (Figs. 22-24). Regarding Claim 4, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 3, and Ochi discloses wherein the expanded state of the insulating film 2 is a cross shape (Modified Fig. 21, [0020]). Ochi discloses wherein the bottom coverage area 22 and four side coverage areas 21,23 are both simple shape ([0020]) such as a rectangle ([0109]). The skilled artisan would recognize that a square is a rectangle, and therefore, it would have been obvious try making each of the bottom coverage area 22 and four side coverage areas 21,23 square. Regarding Claim 5, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 4, and Ochi discloses wherein the expanded state of the insulating film 2, each pair of bonded areas 24 presents as an L shape (formed from right angles) ([0094]). Regarding Claim 8, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 1, and Ochi discloses wherein a material of the insulating film 2 is a waterproof (watertight) material ([0014]). Regarding Claim 9, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 1, and Ochi discloses wherein the battery assembly 1 is a battery cell ([0013]). Regarding Claim 10, Ochi in view of Hair and Unno teaches the instantly claimed insulating film according to Claim 1, and Ochi discloses wherein the battery assembly 1 is a battery cell group (plurality of battery cells), and the battery cell group comprises a plurality of adjacent battery cells ([0013], [0078]). Regarding Claim 11, Ochi discloses a battery cell 1 wherein the battery cell 1 is wrapped with an insulating film 2 according to the insulating film of Ochi in view of Hair and Unno as described in the rejection of Claim 1 ([0013]). Regarding Claim 12, Ochi in view of Hair and Unno teaches the instantly claimed battery cell according to Claim 11, and Ochi discloses wherein N is 4 (Modified Fig. 21), and the battery cell 1 is a cuboid with a bottom wall, two wide side walls, two narrow side walls and a cover plate (Figs. 22-24); wherein the bottom coverage area 22 of the insulating film 2 covers the bottom wall, the four side coverage areas 21, 23 of the insulating film 2 comprise two wide side coverage areas 21 and two narrow side coverage areas 23, the two wide side coverage areas 21 cover the two wide side walls respectively, and the two narrow side coverage areas 23 cover the two narrow side walls respectively (Modified Fig. 21, Figs. 22-24), and each pair of bonding areas 24 bends to the adjacent narrow side coverage area 23 after bonding on a surface towards one side of the battery cell 1 (Modified Fig. 21, Figs. 22-24, [0017]); the part that is not bonded with the second bonding area in the first bonding area bonds are to the adjacent narrow side coverage area ([0015]-[0017], [0117]). And (as previously described in the rejection of Claim 1) Ochi in view of Hair and Unno discloses wherein in each of the four pairs of bonding areas of the insulating film, the width of the first bonding area can be optimized to be greater than the width of the second bonding area in order to fit the claimed battery, and each pair of bonding area bends to the adjacent narrow side coverage area after bonding on a surface towards one side (the narrow side) of the battery cell; the part that is not bonded with the second bonding area in the first bonding area bonds to the adjacent narrow side coverage area (see Ochi Figs., 17-20 and [0110]-[0113] and Hair Intro -Sketch). Regarding Claim 13, Ochi disclose a battery assembly 9, comprising the battery cell 1 according to the battery cell of Ochi in view of Hair and Unno as described in the rejection of Claim 11 ([0078]). Regarding Claim 14, Ochi discloses a power consumption (supply) device, comprising, the battery 9 of Ochi in view of Hair and Unno as described in the rejection of Claim 13, and the battery 9 being configured to provide electric energy ([0131]). Regarding Claim 16, Ochi discloses a device for producing (constructing) a battery cell 1 ([0076]), comprising: a provision (cutting) module, being configured to provide the battery cell 1 ([0013], [0020]); providing the insulating film 2, wherein the insulating film 2 comprises a bottom coverage area (i.e. bottom surface covering portion 22), N side coverage areas (i.e. bottom and side surface covering portions 21, 23), and N pairs of bonding areas (i.e. connection areas 24 within the boundaries of 23x and 23y as defined by W6 and W7), N is 4 (which falls within and therefore anticipates the claimed range of an integer greater than 2) (Modified Fig. 21, [0013]-[0015]); the bottom coverage area 22 having N sides, and the N side coverage areas 21, 23 being respectively connected to the bottom coverage area 22 at the N sides, and can bend toward the bottom coverage area 22 along the N sides respectively (Figs. 22-24, [0013]); each pair of the N pairs of bonding areas 24 being located between two adjacent side coverage areas of the N side coverage areas 21, 23, and being connected to the two adjacent side coverage areas 21, 23 respectively; each pair of bonding areas 24 is configured to make the bottom coverage area 22 and the N side coverage areas 21, 23 form a space wrapping the battery assembly 1 by bonding surfaces on the same side of each pair of bonding areas when the N side coverage areas 21, 23 bend toward the bottom coverage area 24 (Modified Fig. 21, Figs. 22-24, [0013]); a wrapping module (welding plates), being configured to wrap the battery cell 1 with the insulating film 2 ([0013], [0121]). The Courts have held that if the prior art structure is capable of performing the intended use, then it meets the claim. See In re Casey, 152 USPQ 235 (CCPA 1967); and In re Otto, 136 USPQ 458, 459 (CCPA 1963). The Courts have held that it is well settled that the recitation of a new intended use, for an old product, does not make a claim to that old product patentable. See In re Schreiber, 128 F.3d 1473, 1477, 44 USPQ2d 1429, 1431 (Fed. Cir. 1997) (see MPEP § 2114). While Ochi discloses that the protruding widths of the side coverage areas can be narrower than the width of the side coverage area1, Ochi fails to explicitly disclose the width of the first bonding area. However, Hair discloses a method of cutting cardboard to cover a material (Intro). Hair teaches modifying the dimensions of the bonding area and corresponding side coverage areas to fit the desired material (Measure – Sketch). Additionally, Ochi discloses that wherein two side surface covering portions are bent toward one another during bonding, a wide side surface covering portion can cover, overlap, and bond with a narrow side surface covering portion along an exterior narrow side surface of the battery in order to create a seal that is able to be welded and made watertight around the battery and the wide side surface covering portion is capable of substantially covering the whole surface of the narrow side surface of the exterior battery container (Figs. 17-20, [0110]-[0113]). Therefore, it would have been obvious to a person having ordinary skill in the art prior to the effective filing date of the instant application to modify the insulating film of Ochi such that the widths of the bonding areas are optimized to fit the claimed battery assembly, including the instance wherein a width of a first bonding area in each pair of bonding areas is greater than a width of a second bonding area and less than one-half of the width of the side coverage area adjacent to the second bonding area, and after bonding, each pair of bonding areas can bend toward the side coverage area adjacent to the second bonding area along the narrow side surface of the battery, where the part that is not bonded with second bonding area in the first bonding area is configured to bond to the side coverage area adjacent to the second bonding area along the narrow in order to create a watertight seal around the battery, as taught by Ochi, and in order to fit the battery, as taught by Hair. While Ochi discloses that it is beneficial to cover surfaces of the rectangular battery cell with the insulating film 2 to effectively prevent short circuit between exterior containers of the rectangular battery cell adjacent to each other and leakage of current ([0012]), Ochi in view of Hair fails to explicitly disclose wherein a height of the side coverage area is higher than a height of the battery cell, the side coverage area extends beyond the battery cell in a height direction, and an extended area bends towards a cover plate of the battery cell and bonds with a surface of the cover plate. However, Unno discloses an insulating film for covering a battery container that provides insulating properties and watertightness to the outer surface of the battery and in which ends of the insulating film are overlapped with each other ([0007]-[0008]). Unno teaches extending the insulating film to cover at least a portion of the lid of the battery such that the insulating film can provide protection from dew condensation water to prevent a short circuit whether the batteries are in series or parallel (Fig. 11, [0094]-[0096]). Therefore, it would have been obvious to a person having ordinary skill in the art prior to the effective filing date of the instant application to modify the insulating film of Ochi in view of Hair to extend the height of at least a portion of the insulating film such that a height of the side coverage area is higher than a height of the battery cell, the side coverage area extends beyond the battery cell in a height direction, and an extended area bends towards a cover plate of the battery cell and bonds with a surface of the cover plate in order to provide protection from dew condensation water to prevent a short circuit whether the batteries are in series or parallel, as taught by Unno. Regarding Claim 17, Ochi in view of Hair and Unno teaches the instantly claimed battery cell according to Claim 1, and (as previously described in the rejection of Claim 1) Ochi in view of Hair and Unno discloses wherein the part that is not bonded with the second bonding area in the first bonding area is configured to bond to the side coverage area adjacent to the second bonding area (Ochi Figs. 17-20, [0110]-[0113], Hair Intro-Sketch). While Ochi in view of Hair and Unno does not explicitly disclose wherein this bonding prevents the first bonding area and the second bonding area from tilting, the skilled artisan would recognize that this term is interpreted as an intended use for the claimed insulating film which would be inherently possible by the insulating film of Ochi in view of Hair and Unno due to their identical properties. The Courts have held that if the prior art structure is capable of performing the intended use, then it meets the claim. See In re Casey, 152 USPQ 235 (CCPA 1967); and In re Otto, 136 USPQ 458, 459 (CCPA 1963). The Courts have held that it is well settled that the recitation of a new intended use, for an old product, does not make a claim to that old product patentable. See In re Schreiber, 128 F.3d 1473, 1477, 44 USPQ2d 1429, 1431 (Fed. Cir. 1997) (see MPEP § 2114). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to OLIVIA MASON RUGGIERO whose telephone number is (703)756-4652. The examiner can normally be reached Monday-Thursday, 7am-6pm EST. 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, Ula Ruddock can be reached on (571)272-1481. 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. /O.M.R./Examiner, Art Unit 1729 /ULA C RUDDOCK/Supervisory Patent Examiner, Art Unit 1729
Read full office action

Prosecution Timeline

Show 11 earlier events
Dec 17, 2025
Request for Continued Examination
Dec 19, 2025
Response after Non-Final Action
Apr 06, 2026
Non-Final Rejection mailed — §103
Jun 23, 2026
Interview Requested
Jun 30, 2026
Applicant Interview (Telephonic)
Jun 30, 2026
Examiner Interview Summary
Jul 06, 2026
Response Filed
Sep 01, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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Prosecution Projections

5-6
Expected OA Rounds
57%
Grant Probability
85%
With Interview (+27.4%)
3y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 47 resolved cases by this examiner. Grant probability derived from career allowance rate.

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