Prosecution Insights
Last updated: May 29, 2026
Application No. 18/297,703

BATTERY SYSTEM ENCLOSURE WITH VENTING CHANNEL(S) FOR THERMAL RUNAWAY MITIGATION

Non-Final OA §102§103§112
Filed
Apr 10, 2023
Examiner
WANG, PIN JAN
Art Unit
1717
Tech Center
1700 — Chemical & Materials Engineering
Assignee
GM Global Technology Operations LLC
OA Round
2 (Non-Final)
75%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
9 granted / 12 resolved
+10.0% vs TC avg
Strong +50% interview lift
Without
With
+50.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
31 currently pending
Career history
44
Total Applications
across all art units

Statute-Specific Performance

§103
95.0%
+55.0% vs TC avg
§102
3.8%
-36.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 12 resolved cases

Office Action

§102 §103 §112
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 . The Applicant’s amendment filed on 12/03/2025 was received. Claims 1-3, 5-13, 15-20 were amended. The text of those sections of Title 35, U.S.C code not included in this action can be found in the prior Office action issued on 10/21/2025. Claim Rejections - 35 USC § 112 The claims rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ) on claims 1, 2, 11, 12, 20 are withdrawn because Applicant amended independent claims 1, 11, 20. Claim Rejections - 35 USC § 102 The claims rejected under 35 U.S.C. 102 as being anticipated by Zhu et al. (US 20220223972 A1) on claims 1-6, 9-16, 18-20 are withdrawn because Applicant amended independent claims 1, 11, 20. Claims 1, 3, 4, 6, 9, 10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by You et al. (US 20210249731 A1). Regarding to claim 1: You et al. disclose a battery pack (abstract). The battery pack (equivalent to a battery system) comprising: a plurality of battery units (20) (par. 56, fig. 1) (The bottom-right row of the battery units is equivalent to a first group of battery cells. The bottom-left row of the battery units is equivalent to a neighboring second group of battery cells. See fig. unit below); PNG media_image1.png 745 891 media_image1.png Greyscale a box assembly (1) (equivalent to a battery system enclosure), including a box (11), a plurality of fixed beams (12), and a cover (13) (par. 59, 60, fig. 3), surrounded by an external environment and configured to house the plurality of battery units (20) (par. 59, fig. 3); a plurality of second exhaust passages (8) (The right second exhaust passage (8) on fig. 5 is equivalent to a first vent channel. The left second exhaust passage (8) on fig. 5 is equivalent to a second vent channel.) (par. 61, See fig. vent below) mounted to the fixed beams (12) (equivalent to vent channels mounted to the battery system enclosure) and configured to discharge fluids, such as sparks and hot air (equivalent to high-temperature gases and high-temperature gases are gases emitted by battery cells during a thermal event), ejected from the battery units (20) during thermal event to a second explosion-proof valve (9) (equivalent to a valve) (par. 57, 62, 77, 80, 94, fig. 4) (equivalent to the first and second vent channels configured to expel high-temperature gases to the external environment separately from each battery cell of the respective first and second group of battery cells and divert the high-temperature gases away from other battery cells of the respective first and second group of battery cells and from the other group of battery cells); PNG media_image2.png 695 1153 media_image2.png Greyscale wherein the volume of the second exhaust passage (8) is smaller than that of a first exhaust passage (7), so that the pressure within the second exhaust passage (8) is greater than the pressure within the first exhaust passage (7), which can allow the fluid released by the battery units (20) to smoothly enter the first exhaust passage (7) from the second exhaust passage (8) so as to ensure that the fluid is rapidly guided to the outside of the battery pack according to a predetermined discharge path, thereby lowering the risk of thermal runway in other battery modules (2), and further improving the operational safety of the battery pack (par. 62, fig. 4, 5) (equivalent to the first and second vent channels minimize transfer of the high-temperature gases between the battery cells of the respective first and second groups of battery cells and between the first group of battery cells and the second group of battery cells and mitigate propagation of a thermal runaway event in the battery system); wherein the box assembly (1) includes the second explosion-proof valve (9) connected to the right and left second exhaust passages (8) (par. 90, 94, fig. 3) and configured to discharge the fluid out of the battery pack (par. 94, fig. 4) (equivalent to the battery system enclosure includes a valve connected to each of the first and second vent channels and configured to control expelling of the high-temperature gases from the first and second vent channels to the external environment). Regarding to claim 3: You et al. disclose the box assembly (1) (equivalent to a battery system enclosure), including a box (11), a plurality of fixed beams (12), and a cover (13) (equivalent to an enclosure cover) (par. 59, 60, fig. 3). The second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is fixed to the fixed beams (12), and the fixed beams (12) are fixed inside the box assembly (1) (par. 58, fig. 2) (equivalent to the second exhaust passages (8) fixed to the cover (13)). Regarding to claim 4: You et al. disclose the second explosion-proof valve (9) provided on the cover (13) (fig. 3). Regarding to claim 6: You et al. disclose the box assembly (1) (equivalent to a battery system enclosure), including a box (11) (equivalent to an enclosure tray), a plurality of fixed beams (12), and a cover (13) (par. 59, 60, fig. 3); wherein the box (11) connects with the cover (13) via a first flanging (111) and a second flanging (131) (par. 91, fig. 3). The second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is mounted to the fixed beams (12), and the fixed beams (12) are fixed to the box (11) (par. 60, fig. 2) (equivalent to the second exhaust passages (8) mounted to the box (11)). Regarding to claim 9: You et al. disclose the second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is provided with a plurality of communication holes (33) (equivalent to vent holes) (par. 55, fig. 1, 4). Each of the communication holes (33) aligns to one battery unit (20) of the corresponding group of battery units (20) (fig. 4). Regarding to claim 10: You et al. disclose the second exhaust passages (8) extend across each of the battery units (20) of the corresponding first or second group of battery units (20) (fig. 2), and wherein, in a cross-sectional view, the second exhaust passages (8) has a rectangular shape (fig. 5). Claims 1, 7 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Chu et al. (US 20210328281 A1). Regarding to claim 1: Chu et al. disclose a battery pack (abstract). The battery pack (equivalent to a battery system) comprising: a plurality of battery cells (3) (par. 61, fig. 1, 2) (The front row of the battery units on fig. 1 is equivalent to a first group of battery cells. The back row of the battery units on fig. 1 is equivalent to a neighboring second group of battery cells. See fig. unit2 below.); PNG media_image3.png 611 816 media_image3.png Greyscale a box (1) (equivalent to a battery system enclosure), including an upper box (12) and a lower box (13) (par. 61, fig. 1), surrounded by an external environment and configured to house the plurality of battery cells (3) (fig. 1); a plurality of gas channels (21) (The front gas channel (21) on fig. 3 is equivalent to a first vent channel. The back gas channel (21) on fig. 3 is equivalent to a second vent channel. See fig. vent2 below.) (par. 64, fig. 1-3) mounted to the box (1) (par. 62) and configured to discharge a high-temperature gas generated by thermal runaway of the battery cell (3) to the external environment separately (par. 62, 64, 65, 71), wherein the gas discharged cannot flow back into the gas channel (21) due to first one-way valves (4) (par. 73, fig. 3) (equivalent to the first and second vent channels configured to expel high-temperature gases to the external environment separately from each battery cell of the respective first and second group of battery cells and divert the high-temperature gases away from other battery cells of the respective first and second group of battery cells and from the other group of battery cells); PNG media_image4.png 641 987 media_image4.png Greyscale wherein the gas in the gas channel (21) can be smoothly discharged along the first one-way valve (4), because an opening value of the first one-way valve (4) is smaller than a pressure value generated in the gas channel (21) when thermal runaway occurs in the battery cell (3) (par. 74). The above-mentioned opening condition can also be applied to the battery pack (par. 74) (equivalent to the first and second vent channels minimize transfer of the high-temperature gases between the battery cells of the respective first and second groups of battery cells and between the first group of battery cells and the second group of battery cells and mitigate propagation of a thermal runaway event in the battery system); and wherein the box (1) includes a sealing member (6) (equivalent to a valve) (par. 71, fig. 1), which may be a one-way valve (par. 72), connected to each of the gas channels (21) (fig. 3) and configured to control expelling of the high-temperature gases from the gas channels (21) to the external environment (par. 71). Regarding to claim 7: Chu et al. disclose flow guides (7) (the front and back flow guides (7) on fig. 1 are equivalent to a first and second gaskets, respectively) arranged between the respective gas channels (21) and the first and second groups of battery cells (3) (fig. 1), wherein the gas ejected from the battery cells can all flow into the corresponding gas channel (21) under the guiding action of the flow guide (7) (par. 65). Claim Rejections - 35 USC § 103 The claims rejected under 35 U.S.C. 103 as being unpatentable over Zhu et al. (US 20220223972 A1) in view of Lee et al. (US 20250183472 A1) and Sekine (US 20150333304 A1) on claims 7-8 are withdrawn because Applicant amended independent claim 1. The claim rejected under 35 U.S.C. 103 as being unpatentable over Zhu et al. (US 20220223972 A1) in view of Lee et al. (US 20250183472 A1) and Sekine (US 20150333304 A1) on claim 17 is withdrawn because Applicant amended independent claim 11. Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over You et al. (US 20210249731 A1) as applied in claim 1 above, and further in view of Zhu et al. (US 20220223972 A1). Regarding to claim 2: You et al. disclose a battery pack (abstract) as described in paragraph 4 above. You et al. fail to explicitly disclose the valve is configured as a one-way fluid exhaust device. However, Zhu et al. disclose a battery assembly of an electrified vehicle (abstract). The battery assembly (24) comprises outlets (92, 94) which may be provided by one-way valves (par. 53, fig. 6). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use one-way valve of Zhu et al. as the second explosion-proof valve (9) of You et al. because Zhu et al. teach that one-way valve permitting egress but not ingress of fluids (par. 53). Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over You et al. (US 20210249731 A1) as applied in claim 3 above, and further in view of Zhu et al. (US 20220223972 A1). Regarding to claim 5: You et al. disclose the second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is fixed to the fixed beams (12), and the fixed beams (12) are fixed inside the box assembly (1) (par. 58, fig. 2) (equivalent to each of the first and second vent channels second is fixed to the enclosure cover as the box assembly (1) of You includes the cover (13)). You et al. fail to explicitly disclose each of the first and second vent channels is welded to the enclosure cover. However, Zhu et al. disclose a battery assembly of an electrified vehicle, and in particular to a battery pack with a vent gas passageway (abstract). The battery assembly (24) (equivalent to a battery system) comprises a vent gas passageway (82) (equivalent to a vent channel) (par. 47, fig. 5). The vent gas passageway (82) is defined by projections (96A-96G) extending between the first and second plates (84, 86) (par. 54, fig. 4, 6). The projections (96A-96G) can be attached to the first plates (84) by welding or brazing (par. 54). As the first plate (84) is attached to a top wall (72) of an enclosure assembly (60) (par. 37, 38, 47, fig. 1), it is equivalent to that the vent gas passageway (82) is welded to the top wall (72). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use the welding method of Zhu et al. as the method to fix the second exhaust passages (8) inside the box assembly (1) of You et al. because Zhu et al. teach that the welding method can be used to attach the structure of the vent gas passageway (82) to the plate (84) (par. 54). Claim 8 is rejected under 35 U.S.C. 103 as being unpatentable over Chu et al. (US 20210328281 A1) in view of Sekine (US 20150333304 A1). Regarding to claim 8: Chu et al. disclose the flow guides (7) is made of flame-retardant material (par. 65) and configured to maintain contact with the corresponding the gas channel (21) and the respective group of battery cells (3) (par. 65, fig. 1). Chu et al. fail to explicitly disclose the gasket is constructed from silicon. However, Sekine discloses that an assembled battery including a battery holder capable of holding single battery cells while automatically aligning the cells during assembly (abstract). The assembled battery comprises gaskets (170) which are held in a state of being compressed by a predetermined amount between battery lids (102B) (equivalent to the respective group of battery cells) and a gas rail (175) (equivalent to the vent channel) (par. 44, fig. 2). The gaskets (170) are affixed along groove portions (144c) of the battery holders (143 and 144) (par. 43, fig. 3-4). The material of the gaskets (170) can be silicon rubber (par. 43). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use the silicon rubber of Sekine as the material for the flow guides (7) of Chu et al. because Sekine teaches silicon rubber have electrical insulating property and also adequate flexibility and adhesion (par. 43). Claims 11, 13-16, 19, 20 are rejected under 35 U.S.C. 103 as being unpatentable over You et al. (US 20210249731 A1) in view of Zhu et al. (US 20220223972 A1). Regarding to claim 11: You et al. disclose a battery pack and a transportation vehicle (abstract). The transportation vehicle comprising: a battery pack configured to supply electrical energy (par. 54) for operation of a device; and the battery pack including: a plurality of battery units (20) (par. 56, fig. 1) (The bottom-right row of the battery units is equivalent to a first group of battery cells. The bottom-left row of the battery units is equivalent to a neighboring second group of battery cells. See fig. unit above); a box assembly (1) (equivalent to a battery system enclosure), including a box (11), a plurality of fixed beams (12), and a cover (13) (par. 59, 60, fig. 3), surrounded by an external environment and configured to house the plurality of battery units (20) (par. 59, fig. 3); a plurality of second exhaust passages (8) (The right second exhaust passage (8) on fig. 5 is equivalent to a first vent channel. The left second exhaust passage (8) on fig. 5 is equivalent to a second vent channel.) (par. 61, See fig. vent above) mounted to the fixed beams (12) (equivalent to vent channels mounted to the battery system enclosure) and configured to discharge fluids, such as sparks and hot air (equivalent to high-temperature gases and high-temperature gases are gases emitted by battery cells during a thermal event), ejected from the battery units (20) during thermal event to a second explosion-proof valve (9) (equivalent to a valve) (par. 57, 62, 77, 80, 94, fig. 4) (equivalent to the first and second vent channels configured to expel high-temperature gases to the external environment separately from each battery cell of the respective first and second group of battery cells and divert the high-temperature gases away from other battery cells of the respective first and second group of battery cells and from the other group of battery cells); wherein the volume of the second exhaust passage (8) is smaller than that of a first exhaust passage (7), so that the pressure within the second exhaust passage (8) is greater than the pressure within the first exhaust passage (7), which can allow the fluid released by the battery units (20) to smoothly enter the first exhaust passage (7) from the second exhaust passage (8) so as to ensure that the fluid is rapidly guided to the outside of the battery pack according to a predetermined discharge path, thereby lowering the risk of thermal runway in other battery modules (2), and further improving the operational safety of the battery pack (par. 62, fig. 4, 5) (equivalent to the first and second vent channels minimize transfer of the high-temperature gases between the battery cells of the respective first and second groups of battery cells and between the first group of battery cells and the second group of battery cells and mitigate propagation of a thermal runaway event in the battery pack); wherein the box assembly (1) includes second explosion-proof valve (9) (equivalent to a valve) (par. 90, fig. 3) connected to the right and left second exhaust passages (8) (par. 94, fig. 3) and configured to discharge the fluid out of the battery pack (par. 94, fig. 4) (equivalent to the valve configured to control expelling of the high-temperature gases from the first and second vent channels to the external environment). You et al. fail to explicitly disclose a power-source configured to generate power-source torque. However, Zhu et al. disclose a battery assembly of an electrified vehicle, and in particular to a battery pack with a vent gas passageway (abstract). The electrified vehicle (12) comprising: a motor (22) (equivalent to a power-source) can output torque (equivalent to power-source torque) to a shaft (52) which is connected to the second power transfer unit (44) (par. 36, fig. 1); and a battery assembly (24) (equivalent to a battery pack) is capable of outputting electrical power to operate the motor (22) (par. 37, fig. 1). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to include the motor (22) of Zhu et al. in the transportation vehicle of You et al. because Zhu et al. teach that the motor (22) can drive the vehicle drive wheels (28) (par. 36). Regarding to claim 12: You et al. a battery pack and a transportation vehicle (abstract) as described above. You et al. fail to explicitly disclose the valve is configured as a one-way fluid exhaust device. However, Zhu et al. disclose a battery assembly of an electrified vehicle (abstract). The battery assembly (24) comprises outlets (92, 94) which may be provided by one-way valves (par. 53, fig. 6). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use one-way valve of Zhu et al. as the second explosion-proof valve (9) of You et al. because Zhu et al. teach that one-way valve permitting egress but not ingress of fluids (par. 53). Regarding to claim 13: You et al. disclose the box assembly (1) (equivalent to a battery system enclosure), including a box (11), a plurality of fixed beams (12), and a cover (13) (equivalent to an enclosure cover) (par. 59, 60, fig. 3). The second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is fixed to the fixed beams (12), and the fixed beams (12) are fixed inside the box assembly (1) (par. 58, fig. 2) (equivalent to the second exhaust passages (8) fixed to the cover (13)). Regarding to claim 14: You et al. disclose the second explosion-proof valve (9) provided on the cover (13) (fig. 3). Regarding to claim 15: You et al. disclose the second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is fixed to the fixed beams (12), and the fixed beams (12) are fixed inside the box assembly (1) (par. 58, fig. 2) (equivalent to each of the first and second vent channels second is fixed to the enclosure cover as the box assembly (1) of You includes the cover (13)). You et al. fail to explicitly disclose each of the first and second vent channels is welded to the enclosure cover. However, Zhu et al. disclose a battery assembly of an electrified vehicle, and in particular to a battery pack with a vent gas passageway (abstract). The battery assembly (24) (equivalent to a battery system) comprises a vent gas passageway (82) (equivalent to a vent channel) (par. 47, fig. 5). The vent gas passageway (82) is defined by projections (96A-96G) extending between the first and second plates (84, 86) (par. 54, fig. 4, 6). The projections (96A-96G) can be attached to the first plates (84) by welding or brazing (par. 54). As the first plate (84) is attached to a top wall (72) of an enclosure assembly (60) (par. 37, 38, 47, fig. 1), it is equivalent to that the vent gas passageway (82) is welded to the top wall (72). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use the welding method of Zhu et al. as the method to fix the second exhaust passages (8) inside the box assembly (1) of You et al. because Zhu et al. teach that the welding method can be used to attach the structure of the vent gas passageway (82) to the plate (84) (par. 54). Regarding to claim 16: You et al. disclose the box assembly (1) (equivalent to a battery system enclosure), including a box (11) (equivalent to an enclosure tray), a plurality of fixed beams (12), and a cover (13) (par. 59, 60, fig. 3); wherein the box (11) connects with the cover (13) via a first flanging (111) and a second flanging (131) (par. 91, fig. 3). The second exhaust passages (8) are formed by a restraint assembly (3) (par. 61, fig. 1, 2). The restraint assembly (3) is mounted to the fixed beams (12), and the fixed beams (12) are fixed to the box (11) (par. 60, fig. 2) (equivalent to the second exhaust passages (8) mounted to the box (11)). Regarding to claim 19: You et al. disclose the second exhaust passages (8) extend across each of the battery units (20) of the corresponding first or second group of battery units (20) (fig. 2), and wherein, in a cross-sectional view, the second exhaust passages (8) has a rectangular shape (fig. 5). Regarding to claim 20: You et al. disclose a battery pack and a transportation vehicle (abstract). The transportation vehicle comprising: a battery pack configured to supply electrical energy (par. 54) for operation of a device; and the battery pack including: a plurality of battery units (20) (par. 56, fig. 1) (The bottom-right row of the battery units is equivalent to a first group of battery cells. The bottom-left row of the battery units is equivalent to a neighboring second group of battery cells. See fig. unit above); a box assembly (1) (equivalent to a battery system enclosure), including a box (11), a plurality of fixed beams (12), and a cover (13) (par. 59, 60, fig. 3), surrounded by an external environment and configured to house the plurality of battery units (20) (par. 59, fig. 3); a plurality of second exhaust passages (8) (The right second exhaust passage (8) on fig. 5 is equivalent to a first vent channel. The left second exhaust passage (8) on fig. 5 is equivalent to a second vent channel.) (par. 61, See fig. vent above) mounted to the fixed beams (12) (equivalent to vent channels mounted to the battery system enclosure) and configured to discharge fluids, such as sparks and hot air (equivalent to high-temperature gases and high-temperature gases are gases emitted by battery cells during a thermal event), ejected from the battery units (20) during thermal event to a second explosion-proof valve (9) (equivalent to a fluid exhaust device) (par. 57, 62, 77, 80, 94, fig. 4) (equivalent to the first and second vent channels configured to expel high-temperature gases to the external environment separately from each battery cell of the respective first and second group of battery cells and divert the high-temperature gases away from other battery cells of the respective first and second group of battery cells and from the other group of battery cells); wherein the volume of the second exhaust passage (8) is smaller than that of a first exhaust passage (7), so that the pressure within the second exhaust passage (8) is greater than the pressure within the first exhaust passage (7), which can allow the fluid released by the battery units (20) to smoothly enter the first exhaust passage (7) from the second exhaust passage (8) so as to ensure that the fluid is rapidly guided to the outside of the battery pack according to a predetermined discharge path, thereby lowering the risk of thermal runway in other battery modules (2), and further improving the operational safety of the battery pack (par. 62, fig. 4, 5) (equivalent to the first and second vent channels minimize transfer of the high-temperature gases between the battery cells of the respective first and second groups of battery cells and between the first group of battery cells and the second group of battery cells and mitigate propagation of a thermal runaway event in the battery pack); wherein the box assembly (1) includes second explosion-proof valve (9) (equivalent to a fluid exhaust device) (par. 90, fig. 3) connected to the right and left second exhaust passages (8) (par. 94, fig. 3) and configured to discharge the fluid out of the battery pack (par. 94, fig. 4) (equivalent to the fluid exhaust device configured to control expelling of the high-temperature gases from the first and second vent channels to the external environment). You et al. fail to explicitly disclose a power-source configured to generate power-source torque. However, Zhu et al. disclose a battery assembly of an electrified vehicle, and in particular to a battery pack with a vent gas passageway (abstract). The electrified vehicle (12) comprising: a motor (22) (equivalent to a power-source) can output torque (equivalent to power-source torque) to a shaft (52) which is connected to the second power transfer unit (44) (par. 36, fig. 1); and a battery assembly (24) (equivalent to a battery pack) is capable of outputting electrical power to operate the motor (22) (par. 37, fig. 1). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to include the motor (22) of Zhu et al. in the transportation vehicle of You et al. because Zhu et al. teach that the motor (22) can drive the vehicle drive wheels (28) (par. 36). You et al. fail to explicitly disclose a one-way fluid exhaust device. However, Zhu et al. disclose a battery assembly of an electrified vehicle (abstract). The battery assembly (24) comprises outlets (92, 94) which may be provided by one-way valves (equivalent to a one-way fluid exhaust device) (par. 53, fig. 6). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use the one-way valve of Zhu et al. as the second explosion-proof valve (9) of You et al. because Zhu et al. teach that one-way valve permitting egress but not ingress of fluids (par. 53). Claims 11, 17 are rejected under 35 U.S.C. 103 as being unpatentable over Chu et al. (US 20210328281 A1) in view of Zhu et al. (US 20220223972 A1). Regarding to claim 11: Chu et al. disclose a battery pack (abstract). The battery pack, being a power source of a vehicle (par. 3), comprising: a plurality of battery cells (3) (par. 61, fig. 1, 2) (The front row of the battery units on fig. 1 is equivalent to a first group of battery cells. The back row of the battery units on fig. 1 is equivalent to a neighboring second group of battery cells. See fig. unit2 above.); a box (1) (equivalent to a battery system enclosure) (par. 61, fig. 1) surrounded by an external environment and configured to house the plurality of battery cells (3) (fig. 1); a plurality of gas channels (21) (The front gas channel (21) on fig. 3 is equivalent to a first vent channel. The back gas channel (21) on fig. 3 is equivalent to a second vent channel. See fig. vent2 above.) (par. 64, fig. 1-3) mounted to the box (1) (par. 62) and configured to discharge a high-temperature gas generated by thermal runaway of the battery cell (3) to the external environment separately (par. 62, 64, 65, 71), wherein the gas discharged cannot flow back into the gas channel (21) due to first one-way valves (4) (par. 73, fig. 3) (equivalent to the first and second vent channels configured to expel high-temperature gases to the external environment separately from each battery cell of the respective first and second group of battery cells and divert the high-temperature gases away from other battery cells of the respective first and second group of battery cells and from the other group of battery cells); wherein the gas in the gas channel (21) can be smoothly discharged along the first one-way valve (4), because an opening value of the first one-way valve (4) is smaller than a pressure value generated in the gas channel (21) when thermal runaway occurs in the battery cell (3) (par. 74). The above-mentioned opening condition can also be applied to the battery pack (par. 74) (equivalent to the first and second vent channels minimize transfer of the high-temperature gases between the battery cells of the respective first and second groups of battery cells and between the first group of battery cells and the second group of battery cells and mitigate propagation of a thermal runaway event in the battery pack); and wherein the box (1) includes a sealing member (6) (equivalent to a valve) (par. 71, fig. 1), which may be a one-way valve (par. 72), connected to each of the gas channels (21) (fig. 3) and configured to control expelling of the high-temperature gases from the gas channels (21) to the external environment (par. 71). Chu et al. fail to explicitly disclose a power-source configured to generate power-source torque. However, Zhu et al. disclose a battery assembly of an electrified vehicle, and in particular to a battery pack with a vent gas passageway (abstract). The electrified vehicle (12) comprising: a motor (22) (equivalent to a power-source) can output torque (equivalent to power-source torque) to a shaft (52) which is connected to the second power transfer unit (44) (par. 36, fig. 1); and a battery assembly (24) (equivalent to a battery pack) is capable of outputting electrical power to operate the motor (22) (par. 37, fig. 1). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to include the motor (22) of Zhu et al. in the vehicle of Chu et al. because Zhu et al. teach that the motor (22) can drive the vehicle drive wheels (28) (par. 36). Regarding to claim 17: Chu et al. disclose flow guides (7) (the front and back flow guides (7) on fig. 1 are equivalent to a first and second gaskets, respectively) arranged between the respective gas channels (21) and the first and second groups of battery cells (3) (fig. 1), wherein the gas ejected from the battery cells can all flow into the corresponding gas channel (21) under the guiding action of the flow guide (7) (par. 65). Claim 18 is rejected under 35 U.S.C. 103 as being unpatentable over Chu et al. (US 20210328281 A1) in view of Zhu et al. (US 20220223972 A1) as applied in claim 11 above, and further in view of Sekine (US 20150333304 A1). Regarding to claim 18: Chu et al. disclose the flow guides (7) is made of flame-retardant material (par. 65) and configured to maintain contact with the corresponding the gas channel (21) and the respective group of battery cells (3) (par. 65, fig. 1). Chu et al. fail to explicitly disclose the gasket is constructed from silicon. However, Sekine discloses that an assembled battery including a battery holder capable of holding single battery cells while automatically aligning the cells during assembly (abstract). The assembled battery comprises gaskets (170) which are held in a state of being compressed by a predetermined amount between battery lids (102B) (equivalent to the group of battery cells) and a gas rail (175) (equivalent to the vent channel) (par. 44, fig. 2). The gaskets (170) are affixed along groove portions (144c) of the battery holders (143 and 144) (par. 43, fig. 3-4). The material of the gaskets (170) can be silicon rubber (par. 43). It would have been obvious for one of ordinary skill in the art before the effective filing date of the claimed invention to use the silicon rubber of Sekine as the material for the flow guides (7) of Chu et al. because Sekine teaches silicon rubber have electrical insulating property and also adequate flexibility and adhesion (par. 43). Response to Arguments Applicant’s arguments filed on 12/03/2025 have been fully considered but not persuasive. Applicant primarily argues: Zhu is silent relative to distinct first and second passageways or such distinct passageways being connected to a common one-way valve. Zhu does not suggest an enclosure tray. In response: Applicant’s arguments are moot because the newly cited You and Chu references teach two distinct channels and such two channels being connected to a common valve. Chu teaches the common valve can be one-way valve. Zhu teaches one-way valve which can be incorporated into the second explosion-proof valve (9) of You. A tray is defined as “an open receptacle with a flat bottom and a low rim for holding, carrying, or exhibiting articles” in Merriam-Webster dictionary. The newly cited You reference teaches the box (11) which meets the definition of tray. Therefore, Applicant’s arguments are moot. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PIN JAN WANG whose telephone number is (571)272-7057. The examiner can normally be reached M-F 9am-5pm. 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, Dah-Wei Yuan can be reached at (571) 272-1295. 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. /PIN JAN WANG/Examiner, Art Unit 1717 /ULA C RUDDOCK/Supervisory Patent Examiner, Art Unit 1729
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Prosecution Timeline

Apr 10, 2023
Application Filed
Oct 21, 2025
Non-Final Rejection mailed — §102, §103, §112
Dec 02, 2025
Examiner Interview Summary
Dec 02, 2025
Applicant Interview (Telephonic)
Dec 03, 2025
Response Filed
Feb 24, 2026
Final Rejection mailed — §102, §103, §112
Apr 07, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12537227
LIQUID ELECTROLYTE FOR LITHIUM-SULFUR SECONDARY BATTERY AND LITHIUM-SULFUR SECONDARY BATTERY COMPRISING SAME
3y 1m to grant Granted Jan 27, 2026
Patent 12463226
FUEL CELL COOLING
3y 1m to grant Granted Nov 04, 2025
Study what changed to get past this examiner. Based on 2 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+50.0%)
2y 12m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 12 resolved cases by this examiner. Grant probability derived from career allowance rate.

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