Prosecution Insights
Last updated: September 17, 2026
Application No. 18/971,340

AUXILIARY-POWER-SUPPLY UNIT, AUXILIARY POWER SUPPLY, AND RELATED SYSTEM AND METHOD

Final Rejection §103
Filed
Dec 06, 2024
Priority
May 19, 2021 — provisional 63/190,390 +1 more
Examiner
LY, XUAN
Art Unit
2836
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Joule Case Inc.
OA Round
2 (Final)
85%
Grant Probability
Favorable
3-4
OA Rounds
9m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
462 granted / 542 resolved
+17.2% vs TC avg
Moderate +6% lift
Without
With
+6.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
17 currently pending
Career history
570
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
69.8%
+29.8% vs TC avg
§102
23.0%
-17.0% vs TC avg
§112
4.8%
-35.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 542 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 . Applicant’s response filed on 05/11/2026 has been entered and considered. Upon entering claims 1-10 were pending; and claims 1, 8, and 10 have been amended. Information Disclosure Statement The information disclosure statement (IDS) submitted on 05/05/2026 the submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Response to Arguments Applicant’s arguments filed on 05/11/2026 have been fully considered but are moot in view of the new ground(s) of rejection as further noted. Claim Rejections - 35 USC § 103 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 set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied 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. Claims 1-10 are rejected under 35 U.S.C. 103 as being unpatentable over Kang et al. (US 2017/0117746) in view of Nakabayashi et al. (US 2020/0384872). Regarding claim 1, Kang teaches An auxiliary-power-supply unit (see figs. 1, 5, 6C), comprising: a plug connector (300, 810; 811) configured to be plugged into, and to be unplugged from, one of multiple outlets (outlets 350, 850, 851) of a microgrid, each outlet configured to provide power from a grid to a load (see figure 6C and par. [0101]); and a controller (see fig. 5@ 870) configured to provide power to the plug connector if and only if the controller determines that the plug connector is plugged into one of the outlets of the microgrid, and the microgrid is uncoupled from the grid (see par. [0064-0070]). However, Kang does not explicitly teach a controller configured to withhold power from the plug connector before the plug connector is plugged into one of the outlets of the microgrid. Nakabayashi teaches a controller configured to withhold power from the plug connector before the plug connector is plugged into one of the outlets of the microgrid (see figures 1 and 4-5; and par. [0028-0030], a controller 15, a connector 13, a plug 22; the controller 15 controls the operation of the charging device 1. The controller 15 has a function of starting the communication between the charging device 1 and the electric vehicle 2 by controlling the first relay 11 on the basis of the output of the current detection circuit 62. The controller 15 detects a connection state between the charging device 1 and the electric vehicle 2 by starting the communication; and After starting the communication, the controller 15 causes charging of the storage battery 21 of the electric vehicle 2 to be started and controls the operation related to charging by the charging device 1. The controller 15 communicates with the controller 23 of the electric vehicle 2 via the communication line 16 and inputs/outputs signals using a signal line other than the communication line 16, thereby managing the operation related to charging by the charging device 1). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Kang with the teachings of Nakabayashi having a controller configured to withhold power from the plug connector before the plug connector is plugged into one of the outlets of the microgrid in order to ensure that the plug is live when connected, this way serious danger of electrical shock can be prevented also ensuring that the plug is used only with approve sockets. Regarding claim 2, the combination teaches in (see fig. 1) wherein the plug connector has at least two prongs (see plugs, shown in fig. 1; Kang). Regarding claim 3, the combination teaches wherein the controller is further configured to provide power to the plug connector if and only if the controller determines that power from the grid is unavailable to power the microgrid (see par. [0064-0070] and [0076]; Kang). Regarding claim 4, further teaches an inverter; and wherein the controller is configured to provide power to the plug connector by causing the inverter to generate an auxiliary power signal from a battery voltage, and by coupling the auxiliary-power signal to the plug connector (see par. [0036, 0046]; Kang). Note that power from the solar panel or battery can be converted into ac and used to power the load coupled to connector (851). Regarding claim 5, the combination teaches wherein the controller is configured to determine that the connector is plugged into the outlet (851) in response to detecting a signal generated by a microgrid interface plugged into another outlet (850) of the microgrid (see par. [0064-0070] and 0076]; Kang). Note that the controller determines the status of the grid and then makes a decision to power load(s) based on availability of the grid. Regarding claim 6, the combination teaches wherein the controller is configured to determine that the connector is plugged into the outlet (851) in response to detecting a signal generated by a microgrid interface disposed in another outlet (850) of the microgrid (see par. [0064-0070] and [0076]; Kang). Note that the controller determines the status of the grid and then makes a decision to power load(s) based on availability of the grid. Regarding claim 7, the combination teaches wherein the controller is configured to determine that the microgrid is uncoupled from the grid in response to detecting that a breaker (fig. 4@835) that couples the microgrid to the grid is open (see par. [0074-0076]; Kang). Regarding claim 8, Kang teaches An auxiliary power supply (see figs. 1, 5, 6C), comprising: a plug connector (300, 810; 811) configured to engage and disengage an outlet (outlets 350, 850, 851) of a microgrid; a battery (1000); and a controller (870) configured to energize the plug connector with power from the battery if and only if the controller determines that the plug connector is engaged with an outlet of the microgrid, and the microgrid is uncoupled from a grid (see par. [0064-0070]). However, Kang does not explicitly teach and a controller configured to de-energize the plug connector while the plug connector is disengaged from an outlet of the microgrid. Nakabayashi teaches a controller configured to de-energize the plug connector while the plug connector is disengaged from an outlet of the microgrid (see figures 1 and 4-5; and par. [0028-0030], a controller 15, a connector 13, a plug 22; the controller 15 controls the operation of the charging device 1. The controller 15 has a function of starting the communication between the charging device 1 and the electric vehicle 2 by controlling the first relay 11 on the basis of the output of the current detection circuit 62. The controller 15 detects a connection state between the charging device 1 and the electric vehicle 2 by starting the communication; and After starting the communication, the controller 15 causes charging of the storage battery 21 of the electric vehicle 2 to be started and controls the operation related to charging by the charging device 1. The controller 15 communicates with the controller 23 of the electric vehicle 2 via the communication line 16 and inputs/outputs signals using a signal line other than the communication line 16, thereby managing the operation related to charging by the charging device 1). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Kang with the teachings of Nakabayashi having a controller configured to de-energize the plug connector while the plug connector is disengaged from an outlet of the microgrid in order to ensure that the plug is live when connected, this way serious danger of electrical shock can be prevented also ensuring that the plug is used only with approve sockets. Regarding claim 9, the combination teaches wherein the controller is further configured to charge the battery from the microgrid in response to determining that the grid is powering the microgrid (see par. [0082]; Kang). Regarding claim 10, Kang teaches A subgrid assembly (see figs. 1, 4 and 5), comprising: a microgrid (outlets) having an outlet (350, 851, 850); a breaker (fig. 4@ 835) configured to couple the microgrid to a grid while closed, and to uncouple the microgrid from the grid while open (par. [0074-0076]); and an auxiliary power supply (see figs. 1, 4 and 5) including a plug connector (300, 810; 811) configured for being plugged into, and for being unplugged from, an outlet (outlets 350, 850, 851) of a microgrid, including a battery (1000), and configured to provide auxiliary power from the battery to the microgrid via the plug connector if and only if the auxiliary power supply determines that the plug connector is plugged into the outlet of the microgrid, the breaker is open, and power from the grid to the breaker is interrupted (par. [0064-0070] and [0074-0076]). However, Kang does not explicitly teach configured to disconnect the plug connector from the battery while the plug connector is unplugged from the outlet of the microgrid. Nakabayashi teaches configured to disconnect the plug connector from the battery while the plug connector is unplugged from the outlet of the microgrid (see figures 1 and 4-5; and par. [0028-0030], a controller 15, a connector 13, a plug 22; the controller 15 controls the operation of the charging device 1. The controller 15 has a function of starting the communication between the charging device 1 and the electric vehicle 2 by controlling the first relay 11 on the basis of the output of the current detection circuit 62. The controller 15 detects a connection state between the charging device 1 and the electric vehicle 2 by starting the communication; and After starting the communication, the controller 15 causes charging of the storage battery 21 of the electric vehicle 2 to be started and controls the operation related to charging by the charging device 1. The controller 15 communicates with the controller 23 of the electric vehicle 2 via the communication line 16 and inputs/outputs signals using a signal line other than the communication line 16, thereby managing the operation related to charging by the charging device 1). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Kang with the teachings of Nakabayashi having configured to disconnect the plug connector from the battery while the plug connector is unplugged from the outlet of the microgrid in order to ensure that the plug is live when connected, this way serious danger of electrical shock can be prevented also ensuring that the plug is used only with approve sockets. 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 XUAN LY whose telephone number is (571)272-9885. 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, Rexford Barnie can be reached at 571-272-7492. 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. /XUAN LY/Examiner, Art Unit 2836 /REXFORD N BARNIE/Supervisory Patent Examiner, Art Unit 2836
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Prosecution Timeline

Dec 06, 2024
Application Filed
Nov 05, 2025
Non-Final Rejection mailed — §103
May 05, 2026
Response Filed
May 11, 2026
Applicant Interview (Telephonic)
May 14, 2026
Examiner Interview Summary
Jul 28, 2026
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
85%
Grant Probability
92%
With Interview (+6.4%)
2y 7m (~9m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 542 resolved cases by this examiner. Grant probability derived from career allowance rate.

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