Prosecution Insights
Last updated: April 19, 2026
Application No. 18/674,928

CIRCUIT APPARATUS AND POWER CONVERSION CIRCUIT

Non-Final OA §103
Filed
May 27, 2024
Examiner
MEHARI, YEMANE
Art Unit
2838
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Fuji Electric Co. Ltd.
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 4m
To Grant
96%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
813 granted / 909 resolved
+21.4% vs TC avg
Moderate +6% lift
Without
With
+6.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
20 currently pending
Career history
929
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
54.1%
+14.1% vs TC avg
§102
36.4%
-3.6% vs TC avg
§112
4.3%
-35.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 909 resolved cases

Office Action

§103
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 . 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 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 office action is in response to the application filed on 05/27/2024. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Drawing The drawings filed on 05/27/2024 are acceptable. Information Disclosure Statement The information disclosure statement (IDS) submitted on 05/30/2024 is in compliance with the provisions of 37 C.F.R. § 1.97. Accordingly, the IDS has been considered by the examiner. Claims 1-22 are pending and have been examined. 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. Claims 1, 4, 5, 16, 19 and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Joukou et al. (US 2006/0193091 A1), hereinafter Joukou’ in view of Hu (US 2005/0168511 A1). In re to claim 1, Joukou disclose a circuit apparatus comprising a power conversion circuit (i.e. fig. 1, see par. [0039]), and a control circuit (i.e. 1 and 10, see pars. [0039, 0043, 0086]), which controls the power conversion circuit (i.e. see par. [0039, 0043, 0086], wherein the power conversion circuit includes: a control terminal to which a control signal from the control circuit is input (i.e. the control input from the controllers 1 and 10 to the power converter circuit 20, see par. [0043]); an output terminal from which an output signal is output to the control circuit (i.e. the detections signal from 32 to and the feedback signal from the sensor 23 to the controller circuit 10, see pars. [0040 and 0044-0045]). Except, Joukou fail to explicitly disclose that a data identification unit which identifies an input data signal input to the output terminal. Whereas Hu teaches that a data identification unit (i.e. 202, 204, 206, 208 and 210. fig. 2B, see pars. [0007]) which identifies an input data signal input to the output terminal (i.e. the signal transmission line 112, fig. 2B, see the Abstract and par. [0043]). 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 the circuit apparatus of Joukou by incorporating the data identification unit of Hu to help identify the different types of signals transmitted on the same transmission circuit between the controller and the power conversion circuits. In re to claim 4, Joukou disclose the circuit apparatus circuit (i.e. fig. 1, see par. [0039]) according to claim 1, wherein the output signal includes an alarm signal (i.e. a protection alarm signal FO (Fault Out), see par. [0044] indicating whether the power conversion circuit is put into a preset state (i.e. see pars. [0044-0046]). In re to claim 5, Joukou disclose the circuit apparatus circuit (i.e. fig. 1, see par. [0039]) according to claim 1, wherein the output signal includes an output data signal output by the power conversion circuit (i.e. power source circuit 11 extracts electric energy from the driving control signal CS transmitted from the interface circuit 2, and supplies a power source voltage to respective circuits provided within the IPM 3. In addition, the driving control signal CS transmitted from the interface circuit 2 is outputted to a driver circuit 22 via the AND gate 12, the photocoupler 31, and an AND gate 21, see fig. 1 and par. [0044]). In re to claim 16, Joukou disclose a power conversion circuit (i.e. fig. 1, see par. [0039]) which is controlled by a control circuit (i.e. 1 and 10, the power conversion circuit comprising: a control circuit (i.e. 1 and 10, see pars. [0039, 0043, 0086]), which controls the power conversion circuit (i.e. see par. [0039, 0043, 0086], wherein the power conversion circuit includes: a control terminal to which a control signal from the control circuit is input (i.e. the control input from the controllers 1 and 10 to the power converter circuit 20, see par. [0043]); an output terminal from which an output signal is output to the control circuit (i.e. the detections signal from 32 to and the feedback signal from the sensor 23 to the controller circuit 10, see pars. [0040 and 0044-0045]). Except, Joukou fail to explicitly disclose that a data identification unit which identifies an input data signal input to the output terminal. Whereas Hu teaches that a data identification unit (i.e. 202, 204, 206, 208 and 210. fig. 2B, see pars. [0007]) which identifies an input data signal input to the output terminal (i.e. the signal transmission line 112, fig. 2B, see the Abstract and par. [0043]). 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 the circuit apparatus of Joukou by incorporating the data identification unit of Hu to help identify the different types of signals transmitted on the same transmission circuit between the controller and the power conversion circuits. In re to claim 19, Joukou disclose the power conversion circuit (i.e. fig. 1, see par. [0039]) according to claim 16, wherein the output signal includes an alarm signal (i.e. a protection alarm signal FO (Fault Out), see par. [0044] indicating whether the power conversion circuit is put into a preset state (i.e. see pars. [0044-0046]). In re to claim 20, Joukou disclose the power conversion circuit (i.e. fig. 1, see par. [0039]) circuit according to claim 16, wherein the output signal includes an output data signal output by the power conversion circuit (i.e. power source circuit 11 extracts electric energy from the driving control signal CS transmitted from the interface circuit 2, and supplies a power source voltage to respective circuits provided within the IPM 3. In addition, the driving control signal CS transmitted from the interface circuit 2 is outputted to a driver circuit 22 via the AND gate 12, the photocoupler 31, and an AND gate 21, see fig. 1 and par. [0044]). Claims 9 and 21 are rejected under 35 U.S.C. 103 as being unpatentable over Joukou et al. (US 2006/0193091 A1), hereinafter Joukou’ in view of Hu (US 2005/0168511 A1) and in view of Matsumoto et al. (US 6,420,962 B1), hereinafter Matsumoto’. In re to claim 9, Joukou disclose the circuit apparatus circuit (i.e. fig. 1, see par. [0039]) according to claim 1. Except, Joukou and Hu fail to explicitly disclose that wherein the power conversion circuit further includes a clock identification unit which separates a clock signal input to the control terminal from the control signal. Whereas Matsumoto teach that wherein the power conversion circuit further includes a clock identification unit which separates a clock signal input to the control terminal from the control signal (i.e. fig. 1, see col. 6, lines 30-43). 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 integrated the clock identification circuit to the circuit apparatus of Joukou and Hu to help on identifying different types of signal inputs to the controller circuit. In re to claim 21, Joukou disclose the power conversion circuit (i.e. fig. 1, see par. [0039]) according to claim 16. Except, Joukou and Hu fail to explicitly disclose that further comprising: a clock identification unit which separates a clock signal input to the control terminal from the control signal. Whereas Matsumoto teach that a clock identification unit which separates a clock signal input to the control terminal from the control signal (i.e. fig. 1, see col. 6, lines 30-43). 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 integrated the clock identification circuit of Matsumoto to the circuit apparatus of Joukou and Hu to help on identifying different types of signal inputs to the controller circuit. Allowable Subject Matter Claims 2, 3, 6-8, 10-15, 17, 18, 22 are objected to as being dependent upon a rejected base claims but would be allowable if rewritten in independent form including all the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: In re to claim 2, None of the cited prior art alone or in combination disclose or teach the claimed inventions in which “wherein a first superimposed signal in which the output signal and the input data signal are superimposed on each other is input to the data identification unit, and the data identification unit identifies the input data signal based on the first superimposed signal and the output signal”. In re to claim 10, None of the cited prior art alone or in combination disclose or teach the claimed inventions in which “wherein a second superimposed signal in which the control signal and the clock signal with an amplitude different from the control signal are superimposed on each other is input to the control terminal, and the clock identification unit separates the control signal from the clock signal based on an amplitude of each pulse included in the second superimposed signal. In re to claim 17, None of the cited prior art alone or in combination disclose or teach the claimed inventions in which “wherein a first superimposed signal in which the output signal and the input data signal are superimposed on each other is input to the data identification unit, and the data identification unit identifies the input data signal based on the first superimposed signal and the output signal”. In re to claim 22, None of the cited prior art alone or in combination disclose or teach the claimed inventions in which “wherein a second superimposed signal in which the control signal and the clock signal with an amplitude different from the control signal are superimposed on each other is input to the control terminal, and the clock identification unit separates the control signal from the clock signal based on an amplitude of each pulse included in the second superimposed signal”. The art of record does not disclose the above limitations, nor would it be obvious to modify the art of record to include either of the above limitations. In re to claims 3 and 6-8, claims 3 and 6-8 depend on claim 2, thus are also objected for the same reasons provided above. In re to claims 11-15, claims 11-15 depend on claim 10, thus are also objected for the same reasons provided above. In re to claim 18, claim 18 depend on claim 17, thus are also objected for the same reasons provided above. Remarks The examiner has cited columns, line numbers, paragraph numbers, references, or figures in the references applied to the claims below for the convenience of the applicant. Although the specified citations are representative of the teachings of the art and are applied to specific limitations within the individual claim, other passages and figures may apply as well. It is respectfully requested from the applicant in preparing responses to fully consider the reference in entirety, as potentially teaching all or part of the claimed invention. See MPEP § 2141.02 and § 2123. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to YEMANE MEHARI whose telephone number is (571)270-7603. The examiner can normally be reached M-F 9AM TO 6 PM. 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, Thienvu V. Tran can be reached at 5712701276. 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. /YEMANE MEHARI/Primary Examiner, Art Unit 2838
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Prosecution Timeline

May 27, 2024
Application Filed
Feb 19, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603580
POWER CONVERSION APPARATUS AND POWER CONVERSION SYSTEM
2y 5m to grant Granted Apr 14, 2026
Patent 12597851
DISTRIBUTED CONTROL DEVICE AND DISTRIBUTED CONTROL SYSTEM
2y 5m to grant Granted Apr 07, 2026
Patent 12587089
FREQUENCY TUNED RESISTOR-INDUCTOR-CAPACITOR SNUBBER FOR SWITCHING POWER SUPPLY
2y 5m to grant Granted Mar 24, 2026
Patent 12573951
ELECTRONIC DEVICE COMPRISING BOOST CIRCUIT, AND METHOD FOR CONTROLLING SAME ELECTRONIC DEVICE
2y 5m to grant Granted Mar 10, 2026
Patent 12562639
POWER ELECTRONICS CONVERTER THERMAL MANAGEMENT
2y 5m to grant Granted Feb 24, 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
89%
Grant Probability
96%
With Interview (+6.2%)
2y 4m
Median Time to Grant
Low
PTA Risk
Based on 909 resolved cases by this examiner. Grant probability derived from career allow rate.

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