Prosecution Insights
Last updated: August 06, 2026
Application No. 18/571,730

INITIAL DRIVING DEVICE AND METHOD OF SOLID-STATE TRANSFORMER

Non-Final OA §102§103
Filed
Dec 19, 2023
Priority
Jul 01, 2022 — RE 10-2022-0081364 +1 more
Examiner
TSO, EDWARD H
Art Unit
Tech Center
Assignee
Hyosung Corporation
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
1127 granted / 1290 resolved
+27.4% vs TC avg
Moderate +7% lift
Without
With
+6.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
42 currently pending
Career history
1305
Total Applications
across all art units

Statute-Specific Performance

§101
6.4%
-33.6% vs TC avg
§103
31.0%
-9.0% vs TC avg
§102
27.6%
-12.4% vs TC avg
§112
16.6%
-23.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1290 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The IDSes filed 12/19/23 and 6/24/26 have both been considered and placed of record. The initialed copies are attached herewith. 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. Claims 1-7 and 9-11 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by IEEE paper entitled “Startup Strategy with Constant Peak Transformer Current for Solid-State Transformer in Distribution Network” (referred to as “the paper” hereinafter). Re claim 1, the paper discloses an initial driving device of a solid-state transformer (figs 2 and 9; solid state transformer or SST) having, inter alia, an ac/dc converter (fig 9; ac/dc module) configured to convert system power to direct current; a high voltage converter (fig 9; HV part/dc-ac converter) configured to convert an output of the AC/DC converter to a high voltage; a medium frequency transformer (MFT) (fig 9; transformer) configured to convert an output of the high voltage converter to a low voltage; a low voltage converter (fig 9; LV part/ac-dc converter) configured to convert an output of the MFT to a charging voltage of an electric vehicle or battery; and a controller (fig 9; LV controller) configured to control operations of the AC/DC converter, the high voltage converter, the MFT, and the low voltage converter. See figure 9. Re claim 2, the paper further discloses a first power supply configured to supply power to the AC/DC converter (figs 9 and 10: associated with HVac port and supplies ac/dc converter); a second power supply configured to supply power to the high voltage converter (figs 9 and 10: supplied the HV converter on the primary side of transformer); and a third power supply configured to supply power to the low voltage converter and the controller (figs 9 and 10: supplied the circuit on the secondary side of the transformer including the LV converter and LV controller). See figures 9 and 10. Re claim 3, the paper further discloses the first power supply and the second power supply operate with a voltage of a capacitor charged in the high voltage converter. Re claim 4, the paper further discloses the third power supply operates with a voltage of a capacitor charged in the low voltage converter configured to charge the battery (description of figs 4a and 4b where C2 is a capacitor on LV side and is charged by C11 and C12 and is providing voltage for the third power supply LVac and LVdc within converter LV). Re claim 5, the paper further discloses the third power supply operates with a voltage charged in the battery during an initial operation (paragraph labeled as “B. LV to HV on page 4). Re claim 6, the paper further discloses the controller charges capacitors in the high voltage converter and the low voltage converter using the low voltage converter connected to the battery on the basis of the voltage charged in the battery during an initial operation, and charges the capacitors in the high voltage converter and the low voltage converter from system power during a normal operation (paragraph starts with “normally, a startup process…” on page 2 right column). Re claim 7, the paper further discloses the controller charges a voltage of a high voltage converter capacitor and a voltage of a low voltage converter capacitor to an initial operating voltage in an initial charging section (paragraph labeled as “A. HV to LV” on page 3 and paragraph labeled as “B. LV to HV on page 4). Re claims 9 and 10, the paper further discloses the controller performs a normal operation in a normal state control section to charge a voltage of a high voltage converter capacitor and a voltage of a low voltage converter capacitor; and maintains a normal operation in a normal state reaching section (paragraph starts with “no matter which port… on page 7, left column). Re claim 11, method steps performing from apparatus of claim 1. Same reasoning applied to claim 1 is applicable here. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. 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 8 is rejected under 35 U.S.C. 103 as being unpatentable over IEEE paper entitled “Startup Strategy with Constant Peak Transformer Current for Solid-State Transformer in Distribution Network” (referred to as “the paper” hereinafter). The paper is silent on having the controller waits before charging and discharging of the high voltage converter capacitor. Official notice is taken of the fact that delaying the charging/discharging until a stable initial operating condition would allow for a more efficient charging/discharging. Therefore, It would have been well within the skill of one versed in the art, before the effective filing date of the claimed invention, to have delayed the charging of the capacitors until the controller recognized the stable initial operating condition to ensure the charging performed efficiently. Conclusion Any inquiry concerning this communication should be directed to the Examiner at the below-listed number. The Examiner can normally be reached on Mon-Thu from 7:00am-5:00pm. The Examiner’s SPE is Drew Dunn and he can be reached at 571.272.2312. The fax number for the organization where this application is assigned is 571.273.8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866.217.9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800.786.9199 (IN USA OR CANADA) or 571.272.1000. /EDWARD TSO/Primary Examiner, Art Unit 2859 571.272.2087
Read full office action

Prosecution Timeline

Dec 19, 2023
Application Filed
Jul 16, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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3y 4m to grant Granted Aug 04, 2026
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ON-BOARD CHARGER FOR VEHICLE BATTERY AND METHOD OF CHARGING AND USING VEHICLE BATTERY
3y 5m to grant Granted Aug 04, 2026
Patent 12700738
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3y 2m to grant Granted Aug 04, 2026
Patent 12695316
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3y 4m to grant Granted Jul 28, 2026
Patent 12695332
WIRELESS POWER TRANSMITTING MODULE
3y 3m to grant Granted Jul 28, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
87%
Grant Probability
94%
With Interview (+6.9%)
2y 2m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1290 resolved cases by this examiner. Grant probability derived from career allowance rate.

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