Prosecution Insights
Last updated: August 17, 2026
Application No. 18/007,332

BATTERY PACK AND INSTRUMENT HAVING FUNCTION OF DISCHARGING GAS FROM BATTERY PACK

Non-Final OA §103
Filed
Jan 30, 2023
Priority
Sep 25, 2020 — JP 2020-160760 +1 more
Examiner
FRANCIS, ADAM JOSEPH
Art Unit
1728
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Panasonic Holdings Corporation
OA Round
3 (Non-Final)
74%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
165 granted / 223 resolved
+9.0% vs TC avg
Strong +24% interview lift
Without
With
+24.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
36 currently pending
Career history
265
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
61.9%
+21.9% vs TC avg
§102
17.7%
-22.3% vs TC avg
§112
16.9%
-23.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 223 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 05/06/2026 has been entered. Claim Status Claim 1 has been amended; support for claim 1 is found in Figure 3. Claims 3 and 6 have been cancelled. Claims 1-2, 4-5, and 7 are currently pending and have been examined on the merits in this office action. 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. Claim 1 is rejected under 35 U.S.C. 103 as being unpatentable over Nasu (JPS 60246573 A-as cited in the IDS) in view of Tabeta (JPH 0664360 U-as cited in the IDS). Regarding claim 1, Nasu discloses an assembly of a battery pack and a charger for charging the battery pack, the battery pack comprising (Figures 1-6; rechargeable electric apparatus with rechargeable batteries 4): a battery (Figures 1-6; rechargeable electric apparatus with rechargeable batteries 4); and A case accommodating the battery (Figures 1-6; casing 6), The case including: An exhaust hole penetrating the case (Figures 1-6; vent valve formed in the casing 6 when the piston 18 and protrusion portion 19 is moved); A partition wall being in a closed bottomed tubular shape, the partition wall surrounding the exhaust hole within the case (Figure 2; dividing wall 17/22 is read as the partition wall); A sealing member disposed within a tube defined by the partition wall, the sealing member closing the exhaust hole (Figure 2, piston 18 that seals the battery at the exhaust hole); and A biasing member disposed within a tube defined by the partition wall and biasing the sealing member towards the exhaust hole (Spring 22 Figure 1-6), wherein: The partition wall includes a vent hole defining a gas exhaust path together with the exhaust hole (Figures 1-6; case having a hole 16 to define an vent path); The sealing member is configured to move inward when pressed from outside of the case to open the exhaust hole (Figure 5, piston moves when pressed from outside to open the exhaust hole); and The charger comprises (Figure 1 and 3; charger is shown): A pedestal on which the battery pack is to be placed (Figures 1-6; battery is placed on the top surface of the charger); A gas inlet hole disposed in the pedestal at a location overlapping the exhaust hole of the battery pack (Figure 3; window 23); an exhaust duct being a vent path disposed in the pedestal and communicating with the gas inlet hole, for guiding the gas exhaust from the battery pack to outside of the charger (Figures 1-6; gas is released from the storage battery 1 to the charger device and then outside to prevent a buildup of gases and thus this pathway is read as the discharge pathway of the pedestal of the charger), A pressing part protruding from the gas inlet hole, the pressing part configured to press the sealing member of the battery pack (Figure 3-6; Hook 9 presses the protruding part 19 of the piston 18), wherein, An opening in communication with the exhaust duct is formed on a side surface of the charger (Figure 3, window 23’ formed in the side surface of the charger), and When the battery pack is placed on the charger, a surface of the case, on which the exhaust hole is formed contacts a surface of the charger, on which the gas inlet hole is formed without a gap formed therebetween, such that the exhaust hole communicates with the gas inlet hole (Figure 2 and 4; connecting portion case 6 and retaining piece 14 are provided on the surface of the charger). Examiner notes that this limitation is a conditional limitation dependent upon the battery pack being placed on the charger with the phrase “when” thus this limitation is considered an optional limitation. Nevertheless, the primary reference Nasu discloses the limitation of the battery pack being placed on the charger that contacts the charger on which the gas inlet is formed without a gap formed therebetween. Nasu is silent with respect to a plurality of battery cells being used in the device, however, a skilled artisan would have found it obvious to duplicate the number of battery cells such that multiple battery cells are provided in the device as a simple duplication of the battery cell. Thus all the claim limitations of claim 1 are taught or rendered obvious in view of the disclosure of Nasu. The mere duplication of parts, without any new or unexpected results, is within the ambit of one of ordinary skill in the art. See In re Harza, 124 USPQ 378 (CCPA 1960) (see MPEP § 2144.04). Additionally, Nasu is silent with respect to wherein the exhaust hole communicates with the gas inlet hole without any gap space present as Nasu discloses a space 13 that applicant argues is a gap. Tabeta discloses a secondary battery pack that contains a discharge mechanism for discharging oxygen gas generated by charging and is analogous with the instant invention as being with the same field of end3eavor of battery packs. Tabeta further discloses wherein vent and the pressing member are connected and aligned with each other and when pressing occurs gas is vented out (see Figures 9-11). Therefore, it would have been obvious in view of a skilled artisan to modify the configuration of Nasu such that the vent valve and exhaust hole can align to vent gases out of the battery without forming a gap as is shown by Tabeta Figure 9 in order to effectively vent gases from a battery pack. The resulting modification would render obvious all the claim limitations of claim 1 as the vent valve and the exhaust hole can align such that no gap is formed in order to directly exhaust gases from the battery cell. Claims 2, 5 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Nasu (JPS 60246573 A-as cited in the IDS) in view of Tabeta (JPH 0664360 U-as cited in the IDS) as applied to claim 1, and further in view of Chen et al. (US 2015/0079426 A1). Regarding claim 2, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a mesh structure for the vent. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract). Therefore, it would have been obvious in view of a skilled artisan to modify the vent of Nasu to be a mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Regarding claim 5, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a mesh structure for the vent within the exhaust duct. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract). Therefore, it would have been obvious in view of a skilled artisan to modify the vent/exhaust duct vent of Nasu to be a mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Thus the modification would render obvious all the claim limitations of claim 5 as the mesh style vent would prevent fire or ignition from occurring. Regarding claim 7, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a metal mesh structure for the vent within the opening. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract) and wherein the mesh can be a metal mesh provided in the vent hole ([0011]). Therefore, it would have been obvious in view of a skilled artisan to modify the vent/exhaust duct vent of Nasu to be a metal mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Thus the modification would render obvious all the claim limitations of claim 7 as the metal mesh style vent would prevent fire or ignition from occurring and would be provided in the opening. Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Nasu (JPS 60246573 A-as cited in the IDS) in view of Tabeta (JPH 0664360 U-as cited in the IDS) as applied to claim 1, and further in view of Kountz et al. (US 2016/0365553 A1). Regarding claim 4, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein the charger releases gases from the battery to the outside of the battery/charger, however, is silent with respect to the exhaust duct having a flam-antichloristic agent. Kountz discloses a lithium ion battery having improved safety against combustion and is analogous with the instant invention as being within the same field of endeavor of battery cells. Kountz discloses combustion abatement agents such as sodium, potassium, calcium and magnesium carbonate, bicarbonate, sulfate, bisulfate and bisulfite ([0076-0077], abstract; examiner notes that sodium bisulfite and potassium bisulfite are antichloristic agents) that can be used to stop combustion within a battery to improve the safety of the battery. Therefore, it would have been obvious in view of a skilled artisan to incorporate the sodium bisulfite or potassium bisulfite material within the exhaust duct of Nasu to prevent the exhausted gases of the battery of Nasu from igniting within the exhaust region of the charger of Nasu to improve the safety of the battery and prevent from an ignition or fire from occurring when charging the battery. Examiner notes that the sodium bisulfite or potassium bisulfite materials are both flame-antichloristic materials and thus would read on the claimed invention in view of the combination. Claim 1 is rejected under 35 U.S.C. 103 as being unpatentable over Nasu (JPS 60246573 A-as cited in the IDS) in view of Nakajima et al. (US 2015/0246650 A1). Regarding claim 1, Nasu discloses an assembly of a battery pack and a charger for charging the battery pack, the battery pack comprising (Figures 1-6; rechargeable electric apparatus with rechargeable batteries 4): a battery (Figures 1-6; rechargeable electric apparatus with rechargeable batteries 4); and A case accommodating the battery (Figures 1-6; casing 6), The case including: An exhaust hole penetrating the case (Figures 1-6; vent valve formed in the casing 6 when the piston 18 and protrusion portion 19 is moved); A partition wall being in a closed bottomed tubular shape, the partition wall surrounding the exhaust hole within the case (Figure 2; dividing wall 17/22 is read as the partition wall); A sealing member disposed within a tube defined by the partition wall, the sealing member closing the exhaust hole (Figure 2, piston 18 that seals the battery at the exhaust hole); and A biasing member disposed within a tube defined by the partition wall and biasing the sealing member towards the exhaust hole (Spring 22 Figure 1-6), wherein: The partition wall includes a vent hole defining a gas exhaust path together with the exhaust hole (Figures 1-6; case having a hole 16 to define an vent path); The sealing member is configured to move inward when pressed from outside of the case to open the exhaust hole (Figure 5, piston moves when pressed from outside to open the exhaust hole); and The charger comprises (Figure 1 and 3; charger is shown): A pedestal on which the battery pack is to be placed (Figures 1-6; battery is placed on the top surface of the charger); A gas inlet hole disposed in the pedestal at a location overlapping the exhaust hole of the battery pack (Figure 3; window 23); an exhaust duct being a vent path disposed in the pedestal and communicating with the gas inlet hole, for guiding the gas exhaust from the battery pack to outside of the charger (Figures 1-6; gas is released from the storage battery 1 to the charger device and then outside to prevent a buildup of gases and thus this pathway is read as the discharge pathway of the pedestal of the charger), A pressing part protruding from the gas inlet hole, the pressing part configured to press the sealing member of the battery pack (Figure 3-6; Hook 9 presses the protruding part 19 of the piston 18), wherein, An opening in communication with the exhaust duct is formed on a side surface of the charger (Figure 3, window 23’ formed in the side surface of the charger), and When the battery pack is placed on the charger, a surface of the case, on which the exhaust hole is formed contacts a surface of the charger, on which the gas inlet hole is formed without a gap formed therebetween, such that the exhaust hole communicates with the gas inlet hole (Figure 2 and 4; connecting portion case 6 and retaining piece 14 are provided on the surface of the charger). Examiner notes that this limitation is a conditional limitation dependent upon the battery pack being placed on the charger with the phrase “when” thus this limitation is considered an optional limitation. Nevertheless, the primary reference Nasu discloses the limitation of the battery pack being placed on the charger that contacts the charger on which the gas inlet is formed without a gap formed therebetween. Nasu is silent with respect to a plurality of battery cells being used in the device, however, a skilled artisan would have found it obvious to duplicate the number of battery cells such that multiple battery cells are provided in the device as a simple duplication of the battery cell. Thus all the claim limitations of claim 1 are taught or rendered obvious in view of the disclosure of Nasu. The mere duplication of parts, without any new or unexpected results, is within the ambit of one of ordinary skill in the art. See In re Harza, 124 USPQ 378 (CCPA 1960) (see MPEP § 2144.04). Additionally, Nasu is silent with respect to wherein the exhaust hole communicates with the gas inlet hole without any gap space present as Nasu discloses a space 13 that applicant argues is a gap. Nakajima discloses an in-vehicle electrical equipment and spare battery unit and is analogous with the instant invention as being within the same field of endeavor of battery cells for devices. Nakajima further discloses wherein gas can be exhausted via a gas duct containing spring mechanism that can release gas when the pressure exceeds a threshold pressure ([0007,0069]; Figure 6). Therefore, it would have been obvious in view of a skilled artisan to modify the configuration of Nasu such that an exhaust duct is provided that extends from the vent valve to the exhaust hole to vent gases from the battery without a gap forming as taught by Nakajima in order to effectively vent gases and prevent buildup of gasses from the battery and charger apparatus of Nasu. The resulting modification would render obvious all the claim limitations of claim 1 as the vent valve and the exhaust hole can be aligned with the exhaust duct such that no gap is formed that would allow for a buildup of gasses in order to directly exhaust gases from the battery cell. Claims 2, 5 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Nasu (JPS 60246573 A-as cited in the IDS) in view of Nakajima et al. (US 2015/0246650 A1) as applied to claim 1 and further in view of Chen et al. (US 2015/0079426 A1). Regarding claim 2, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a mesh structure for the vent. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract). Therefore, it would have been obvious in view of a skilled artisan to modify the vent of Nasu to be a mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Regarding claim 5, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a mesh structure for the vent within the exhaust duct. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract). Therefore, it would have been obvious in view of a skilled artisan to modify the vent/exhaust duct vent of Nasu to be a mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Thus the modification would render obvious all the claim limitations of claim 5 as the mesh style vent would prevent fire or ignition from occurring. Regarding claim 7, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein a vent is formed, however, is silent with respect to a metal mesh structure for the vent within the opening. Chen discloses a lithium ion battery having a gas release structure. Chen discloses wherein the battery cover has a pressure relief valve comprising a mesh structure such that only gases and vapor can pass through the mesh structure and thus ignition of the flammable gases and solid particles passing through the vent can be avoided and thus improving the safety of the battery (abstract) and wherein the mesh can be a metal mesh provided in the vent hole ([0011]). Therefore, it would have been obvious in view of a skilled artisan to modify the vent/exhaust duct vent of Nasu to be a metal mesh cover vent that allows for gases to pass through the vent while restricting solid particles and preventing the ignition of flammable gases as taught by Chen to improve the safety of the battery pack device. Thus the modification would render obvious all the claim limitations of claim 7 as the metal mesh style vent would prevent fire or ignition from occurring and would be provided in the opening. Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable Nasu (JPS 60246573 A-as cited in the IDS) in view of Nakajima et al. (US 2015/0246650 A1) as applied to claim 1 and further in view of Kountz et al. (US 2016/0365553 A1). Regarding claim 4, modified Nasu discloses all the claim limitations of claim 1. Nasu discloses wherein the charger releases gases from the battery to the outside of the battery/charger, however, is silent with respect to the exhaust duct having a flam-antichloristic agent. Kountz discloses a lithium ion battery having improved safety against combustion and is analogous with the instant invention as being within the same field of endeavor of battery cells. Kountz discloses combustion abatement agents such as sodium, potassium, calcium and magnesium carbonate, bicarbonate, sulfate, bisulfate and bisulfite ([0076-0077], abstract; examiner notes that sodium bisulfite and potassium bisulfite are antichloristic agents) that can be used to stop combustion within a battery to improve the safety of the battery. Therefore, it would have been obvious in view of a skilled artisan to incorporate the sodium bisulfite or potassium bisulfite material within the exhaust duct of Nasu to prevent the exhausted gases of the battery of Nasu from igniting within the exhaust region of the charger of Nasu to improve the safety of the battery and prevent from an ignition or fire from occurring when charging the battery. Examiner notes that the sodium bisulfite or potassium bisulfite materials are both flame-antichloristic materials and thus would read on the claimed invention in view of the combination. Response to Arguments Applicant's arguments filed 03/09/2026 have been fully considered but they are not persuasive. Applicant argues that the amended claims overcome the rejection of record and that the exhaust of Nasu would contain a gap in which exhausted gas would be build up and thus could result in a possibility of ignition. This argument in view of the amendment is noted and thus the rejection of record has been updated to take into account the remarks and amendments to the claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Adam J Francis whose telephone number is (571)272-1021. The examiner can normally be reached M-Th: 7 am-4 pm 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, Matthew Martin can be reached at (571)270-7871. 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. /ADAM J FRANCIS/Primary Examiner, Art Unit 1728
Read full office action

Prosecution Timeline

Jan 30, 2023
Application Filed
Nov 13, 2025
Non-Final Rejection mailed — §103
Dec 24, 2025
Response Filed
Feb 13, 2026
Final Rejection mailed — §103
Mar 09, 2026
Response after Non-Final Action
May 06, 2026
Request for Continued Examination
May 07, 2026
Response after Non-Final Action
Aug 06, 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

3-4
Expected OA Rounds
74%
Grant Probability
98%
With Interview (+24.4%)
2y 12m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 223 resolved cases by this examiner. Grant probability derived from career allowance rate.

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