Prosecution Insights
Last updated: April 19, 2026
Application No. 18/508,458

BIDIRECTIONAL HYBRID POWER CONVERSION SYSTEM

Non-Final OA §102
Filed
Nov 14, 2023
Examiner
MEHARI, YEMANE
Art Unit
2838
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Chip-Gan Power Semiconductor Corporation
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

§102
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 11/14/2023. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Drawing The drawings filed on 11/14/2023 are acceptable. Information Disclosure Statement The information disclosure statements (IDSs) submitted on 11/14/2023 and 03/18/2024 are in compliance with the provisions of 37 C.F.R. § 1.97. Accordingly, the IDS has/have been considered by the examiner. Claims 1-16 are pending and have been examined. Claim Rejections - 35 USC § 102 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1 are rejected under 35 U.S.C. 102(a)(1) or 102(a)(2) as being anticipated by Giuliano et al. (US 2021/0013798 A1), hereinafter ‘Giuliano. In re to claim 1, Giuliano disclose a bidirectional hybrid power conversion system comprising a symmetric hybrid unit (i.e. fig. 19 and fig. 22, see p. [0174]), selecting to maintain or change a conversion ratio of voltage (i.e. see ps. [0108-0109]), receiving an input voltage (i.e. VIN, fig. 19), converting the input voltage into an output voltage (i.e. VO) at the conversion ratio (i.e. see ps. [0108-0109]); a feedback unit (i.e. 301, fig. 13, see p. 0134]), connected with the symmetric hybrid unit to receive the output voltage (i.e. output of 302, fig. 13), comparing the output voltage (i.e. Vo) with a reference voltage (i.e. VREF) to generate a feedback signal (i.e. output of 32, fig. 13, fig. 13 and see ps. [0134-0138]); and a conversion control unit (i.e. 20A, see figs. 13 and 19), disposed between and connected with the symmetric hybrid unit (i.e. fig. 19 and fig. 22, see p. [0174]), and the feedback unit (i.e. 302, fig. 13, see ps. [0130-0132]), receiving the feedback signal (i.e. the input to comparator 32, fig. 13), the input voltage (i.e. VIN), and the output voltage (i.e. VO), and comparing the feedback signal, the input voltage, and the output voltage to generate a control signal (i.e. controller 20A receives inputs VIN, VO ,VX1 and VXN to generate the control signals Delt N, see fig. 19 and ps. [0165-0166]), wherein the conversion control unit controls the symmetric hybrid unit to select whether to maintain or change the conversion ratio according to the control signal (i.e. see ps. [0108-0109]). Allowable Subject Matter Claims 2-16 are objected to as being dependent upon a rejected base claim, 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 “the intermediate circuit, and the second conversion regulation circuit, is expressed by an equation VOUT/VIN = CR2-X boost = 2/1-D a maximum buck conversion ratio, which may be achieved by the first conversion regulation circuit, the intermediate circuit, and the second conversion regulation circuit, is expressed by an equation: VOUT/VIN = CR2-X buck = D/2 wherein VOUT is the output voltage; VIN is the input voltage; 2-X boost is the maximum boost conversion ratio; CR2-X buck is the maximum buck conversion ratio; D is a duty cycle of the first conversion regulation circuit and the second conversion regulation circuit; according to the control signal, the conversion control unit controls the conversion ratio of the symmetric hybrid unit to range between the maximum boost conversion ratio and the maximum buck conversion ratio”. 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 3-16, claims 3-16 depend on claim 2 and 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

Nov 14, 2023
Application Filed
Oct 17, 2025
Non-Final Rejection — §102 (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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