Prosecution Insights
Last updated: April 19, 2026
Application No. 18/297,801

CHARGE PORT WITH FAST PHASE CHANGE MATERIAL (PCM) RESOLIDIFICATION

Non-Final OA §102§103
Filed
Apr 10, 2023
Examiner
KOUSAR, SADIA
Art Unit
2859
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
GM Global Technology Operations LLC
OA Round
1 (Non-Final)
63%
Grant Probability
Moderate
1-2
OA Rounds
3y 1m
To Grant
73%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
69 granted / 109 resolved
-4.7% vs TC avg
Moderate +9% lift
Without
With
+9.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
46 currently pending
Career history
155
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
55.9%
+15.9% vs TC avg
§102
30.1%
-9.9% vs TC avg
§112
9.6%
-30.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 109 resolved cases

Office Action

§102 §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 . 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) 1-5, 8-12, 15-19 is/are rejected under 35 U.S.C. 102(a)(1) as being unpatentable by Mathews et al. (US 2021/0021077), herein after Mathews. Regarding claim 1, Mathews discloses a charge port (the assembly 10, serves a charging port of an electrically propelled vehicle, paragraph [0054]) comprising: a plug housing (16, fig. 2); a direct current terminal electrically coupled to the plug housing (hereinafter referred to as the housing 16, that defines a cavity 18 in which the DC terminals 14 are disposed, paragraph [0055]); and a subassembly coupled to the direct current terminal, the subassembly comprising: a cartridge filled with a phase change material (the cavity 18 (having the terminals 14) may be filled with a dielectric phase changing material (PCM), paragraph [0062]); and an enhancer comprising a top portion and a bottom portion wherein the bottom portion is embedded within the phase change material ((cover 500 has the base (bottom portion embedded within the PCM),fig. 2 paragraph [0064]Note: The cover 500 is formed of a thermally conductive material such an aluminum or copper based material, paragraph [0061] which enhanced the thermal conductivity as required)) and the top portion extends beyond the cartridge into ambient (heat is gradually released through the cover 500 as the PCM changes from the liquid state back to the solid state, paragraph [0062] where the top portion of cover 500 is extended beyond the cavity 18 in to ambient, fig. 15). Regarding claim 2, Mathews further discloses a thermoelectric device in contact with the enhancer (202 combined with cover 500, fig. 2, paragraph [0058]). Regarding claim 3, Mathews further discloses a heat sink on a surface of the thermoelectric device (202 is attached with the cover 200, fig. 9 where 200 cover configuration includes active thermal management mechanisms such as one or more thermoelectric cooling plates (used as the heat sink), paragraph [0056]). Regarding claim 4, Mathews further discloses a controller configured to adjust a thermoelectric device current of the thermoelectric device responsive to a temperature of the phase change material (cover 200 includes a thermoelectric device 202 which uses the Peltier effect to actively cool the cavity 18 (filled with phase change material). An electrical voltage is applied to the thermoelectric device 202 such that a side 204 of the thermoelectric device 202 facing inwardly toward the cavity 18 is cooled while another side 206 of the thermoelectric device 202 facing outward is heated by the thermal energy removed from the cooled side 204, paragraph [0058]by controlling the voltage/current the cavity is maintained at the optimum temperature. Note: thermoelectric device uses the Peltier effect, thus, by controlling the current the temperature of the cavity can be controlled). Regarding claim 5, Mathews further discloses wherein the top portion of the enhancer comprises one or more fins and the bottom portion of the enhancer comprises one or more plates (fins 502 is projecting form the cover 500 and the bottom is attached with the plates 200, fig. 2; fig. 15, paragraph [0056]). Regarding claim 8, Mathews discloses A vehicle (paragraph [0028]) comprising: an electric motor configured to drive at least one wheel of the vehicle (the assembly 10, serves a charging port of an electrically propelled vehicle. As used herein, the term “electrically propelled vehicle” may refer to an electric vehicle which is propelled solely by an electric motor or a hybrid electric vehicle which is propelled by an electric motor in some combination with a combustion engine, paragraph [0054]); a battery pack electrically coupled to the electric motor (the battery pack 22 couple to the vehicle (motor) , paragraph [0054]-[0055]); and a charge port configured to deliver power to at least one of the battery pack and the electric motor (connector assembly 10 charge the battery 22 which give power to the vehicle motor, fig. 8, paragraph [0054], [0055]), the charge port comprising: a plug housing(16, fig. 2); one or more direct current terminals electrically coupled to the plug housing(hereinafter referred to as the housing 16, that defines a cavity 18 in which the DC terminals 14 are disposed, paragraph [0055]); and a subassembly coupled to the one or more direct current terminals, the subassembly comprising: one or more cartridges filled with a phase change material(the cavity 18 (having the terminals 14) may be filled with a dielectric phase changing material (PCM), paragraph [0062]); and for each cartridge of the one or more cartridges, an enhancer comprising a top portion and a bottom portion, wherein the bottom portion is embedded within the phase change material (cover 500 has the base (bottom portion embedded within the PCM),fig. 2 paragraph [0064]Note: The cover 500 is formed of a thermally conductive material such an aluminum or copper based material, paragraph [0061] which enhanced the thermal conductivity as required) and the top portion extends beyond the respective cartridge into ambient(heat is gradually released through the cover 500 as the PCM changes from the liquid state back to the solid state, paragraph [0062] where the top portion of cover 500 is extended beyond the cavity 18 in to ambient, fig. 15). Regarding claim 9, Mathews further discloses a thermoelectric device in contact with the enhancer(202 combined with cover 500, fig. 2, paragraph [0058]). Regarding claim 10, Mathews further discloses a heat sink on a surface of the thermoelectric device(202 is attached with the cover 200, fig. 9 where 200 cover configuration includes active thermal management mechanisms such as one or more thermoelectric cooling plates (used as the heat sink), paragraph [0056]). Regarding claim 11, Mathews further discloses a controller configured to adjust a thermoelectric device current of the thermoelectric device responsive to a temperature of the phase change material (cover 200 includes a thermoelectric device 202 which uses the Peltier effect to actively cool the cavity 18 (filled with phase change material). An electrical voltage is applied to the thermoelectric device 202 such that a side 204 of the thermoelectric device 202 facing inwardly toward the cavity 18 is cooled while another side 206 of the thermoelectric device 202 facing outward is heated by the thermal energy removed from the cooled side 204, paragraph [0058]by controlling the voltage/current the cavity is maintained at the optimum temperature. Note: thermoelectric device uses the Peltier effect, thus, by controlling the current the temperature of the cavity can be controlled). Regarding claim 12, Mathews further discloses wherein the top portion of the enhancer comprises one or more fins and the bottom portion of the enhancer comprises one or more plates(fins 502 is projecting form the cover 500 and the bottom is attached with the plates 200, fig. 2; fig. 15, paragraph [0056]). Regarding claim 15, Mathews discloses a method for phase change material resolidification in a charge port (paragraph [0062]), the method comprising: providing a plug housing(16, fig. 2); providing a direct current terminal electrically coupled to the plug housing(hereinafter referred to as the housing 16, that defines a cavity 18 in which the DC terminals 14 are disposed, paragraph [0055]); and providing a subassembly coupled to the direct current terminal, the subassembly comprising: a cartridge filled with a phase change material(the cavity 18 may be filled with a dielectric phase changing material (PCM), paragraph [0062]); and an enhancer comprising a top portion and a bottom portion, wherein the bottom portion is embedded within the phase change material (cover 500 has the base (bottom portion embedded within the PCM),fig. 2 paragraph [0064]Note: The cover 500 is formed of a thermally conductive material such an aluminum or copper based material, paragraph [0061] which enhanced the thermal conductivity as required) and the top portion extends beyond the cartridge into ambient(heat is gradually released through the cover 500 as the PCM changes from the liquid state back to the solid state, paragraph [0062] where the top portion of cover 500 is extended beyond the cavity 18 in to ambient, fig. 15). Regarding claim 16, Mathews further discloses a thermoelectric device in contact with the enhancer(202 combined with cover 500, fig. 2, paragraph [0058]). Regarding claim 17, Mathews further discloses a heat sink on a surface of the thermoelectric device(202 is attached with the cover 200, fig. 9 where 200 cover configuration includes active thermal management mechanisms such as one or more thermoelectric cooling plates (used as the heat sink), paragraph [0056]). Regarding claim 18, Mathews further discloses a controller configured to adjust a thermoelectric device current of the thermoelectric device responsive to a temperature of the phase change material (cover 200 includes a thermoelectric device 202 which uses the Peltier effect to actively cool the cavity 18 (filled with phase change material). An electrical voltage is applied to the thermoelectric device 202 such that a side 204 of the thermoelectric device 202 facing inwardly toward the cavity 18 is cooled while another side 206 of the thermoelectric device 202 facing outward is heated by the thermal energy removed from the cooled side 204, paragraph [0058]by controlling the voltage/current the cavity is maintained at the optimum temperature. Note: thermoelectric device uses the Peltier effect, thus, by controlling the current the temperature of the cavity can be controlled). Regarding claim 19, Mathews further discloses wherein the top portion of the enhancer comprises one or more fins and the bottom portion of the enhancer comprises one or more plates(fins 502 is projecting form the cover 500 and the bottom is attached with the plates 200, fig. 2; fig. 15, paragraph [0056]). 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. Claim(s)6-7, 13-14, 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Mathews (US 2021/0021077), as applied to claims 1, 8, 15 above, and further in view of Cole at al. (US 2021/0347270), herein after Cole. Regarding claim 6, Mathews further discloses wherein an interface between the top portion of the enhancer and the bottom portion of the enhancer comprises a threaded cap (sealing members 638 and 640 to seal the cover to the cavity, fig. 20, paragraph [00467]). However, Mathews is silent about the sealing is a threaded cap. Cole discloses the threaded cap to for coupling (220 rear portion include the threaded cap for coupling, paragraph [0024], fig. 3). It would have been obvious to one of the ordinary skills in the art, before the effective filing date of the claimed invention to modify Mathews charging port to use threaded caps for sealing as taught by Cole, in order to ensure a tight, often airtight, seal that prevents damage, corrosion, and contamination from moisture or debris during transit and storage. Regarding claim 7, Mathews discloses the charge port of claim 1. However, Mathews is silent about wherein the enhancer comprises a fill nipple having a first opening in ambient and a second opening in the cartridge. Cole discloses a charge port where a fill nipple having a first opening in ambient and a second opening in the cartridge (with the cover 310 removed and the connector 430 released, the PCM 300 is injected into the connector assembly 100 in a liquid state, so as to substantially fill the flexible tubes 200 and surround at least a portion of the electrical wires 210, paragraph [0032], fig. 5). It would have been obvious to one of the ordinary skills in the art, before the effective filing date of the claimed invention to modify Mathews charging port to fill the cavity with the phase change material through nipple as taught by Cole, in order to allow precise injection of molten phase change material, minimize spillage and reduce air entrapment. Regarding claim 13, Mathews further discloses wherein an interface between the top portion of the enhancer and the bottom portion of the enhancer comprises a threaded cap (sealing members 638 and 640 to seal the cover to the cavity, fig. 20, paragraph [00467]). However, Mathews is silent about the sealing is a threaded cap. Cole discloses the threaded cap to for coupling (220 rear portion include the threaded cap for coupling, paragraph [0024], fig. 3). It would have been obvious to one of the ordinary skills in the art, before the effective filing date of the claimed invention to modify Mathews charging port to use threaded caps for sealing as taught by Cole, in order to ensure a tight, often airtight, seal that prevents damage, corrosion, and contamination from moisture or debris during transit and storage. Regarding claim 14, Mathews discloses the vehicle of claim 8. However, Mathews is silent about wherein the enhancer comprises a fill nipple having a first opening in ambient and a second opening in the cartridge. Cole discloses a charge port where a fill nipple having a first opening in ambient and a second opening in the cartridge (with the cover 310 removed and the connector 430 released, the PCM 300 is injected into the connector assembly 100 in a liquid state, so as to substantially fill the flexible tubes 200 and surround at least a portion of the electrical wires 210, paragraph [0032], fig. 5). It would have been obvious to one of the ordinary skills in the art, before the effective filing date of the claimed invention to modify Mathews charging port to fill the cavity with the phase change material through nipple as taught by Cole, in order to allow precise injection of molten phase change material, minimize spillage and reduce air entrapment. Regarding claim 20, Mathews further discloses wherein an interface between the top portion of the enhancer and the bottom portion of the enhancer comprises a threaded cap (sealing members 638 and 640 to seal the cover to the cavity, fig. 20, paragraph [00467]). However, Mathews is silent about the sealing is a threaded cap. Cole discloses the threaded cap to for coupling (220 rear portion include the threaded cap for coupling, paragraph [0024], fig. 3). It would have been obvious to one of the ordinary skills in the art, before the effective filing date of the claimed invention to modify Mathews charging port to use threaded caps for sealing as taught by Cole, in order to ensure a tight, often airtight, seal that prevents damage, corrosion, and contamination from moisture or debris during transit and storage. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SADIA KOUSAR whose telephone number is (571)272-3386. The examiner can normally be reached M-Th 7:30am-5:30pm. 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, Julian Huffman can be reached at (571) 272-2147. 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. SADIA . KOUSAR Examiner Art Unit 2859 /JULIAN D HUFFMAN/ Supervisory Patent Examiner, Art Unit 2859
Read full office action

Prosecution Timeline

Apr 10, 2023
Application Filed
Feb 26, 2026
Non-Final Rejection — §102, §103
Mar 24, 2026
Interview Requested
Apr 01, 2026
Examiner Interview Summary
Apr 01, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12580391
SYSTEM FOR CHARGING VEHICLE BATTERY USING MOTOR DRIVING SYSTEM
2y 5m to grant Granted Mar 17, 2026
Patent 12573859
Battery Pack, System, Operation Status Transmission Method And Program
2y 5m to grant Granted Mar 10, 2026
Patent 12556011
CHARGING PILE WITH PERMANENTLY-HORIZONTAL CHARGING BLOCK AND CHARGING DEVICE HAVING THE SAME
2y 5m to grant Granted Feb 17, 2026
Patent 12549025
BATTERY CONFIGURATION FOR GAS ENGINE REPLACEMENT DEVICE
2y 5m to grant Granted Feb 10, 2026
Patent 12515544
LIGHT PIPE APPARATUS AND ASSOCIATED ELECTRONIC DEVICE
2y 5m to grant Granted Jan 06, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
63%
Grant Probability
73%
With Interview (+9.4%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 109 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month