Prosecution Insights
Last updated: July 17, 2026
Application No. 18/358,699

Transformer, Power Module and Switching Power Supply

Non-Final OA §102§103
Filed
Jul 25, 2023
Priority
Jul 26, 2022 — CN 202210886999.9
Examiner
HINSON, RONALD
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Aplus Power Technology (Hangzhou) Co., Ltd.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
581 granted / 786 resolved
+5.9% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
51 currently pending
Career history
817
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
90.0%
+50.0% vs TC avg
§102
1.5%
-38.5% vs TC avg
§112
3.8%
-36.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 786 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 . Election/Restrictions Applicant’s election without traverse of species 5 (figures 7-8, claims 1, 5-7 and 9-10) in the reply filed on 06/15/26 is acknowledged. 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. 1 Claims 1, 5 and 9-10 are rejected under 35 U.S.C. 102a1 as being anticipated by Chang et al.(US 20130188329). Regarding claim 1, Chang et al.( figures 5-8 and para 0037-0046) discloses a magnetic core (10a), a primary side winding and a secondary side winding (see para 0038 and figure 6), wherein ;the magnetic core comprises a first cover plate (see figure 6), a second cover plate (see figure 6), a winding column (13a) and at least two side columns (12a), and the first cover plate and the second cover plate are respectively connected with top and bottom surfaces the winding column and at least two side columns of the magnetic core (see figures 6/8); at least one of the side columns has a through channel (15a), the primary side winding (20a/22a) is wound around the winding column, and a lead wire (22a or 22b) of the primary side winding passes through the through channel (see figures 6/8), and a lead wire (312a or 312b) of the secondary side winding (30a or 30b) passes through a gap formed by the at least two side columns(see figures 6/8). Regarding claim 5, Chang et al.(figures 5-8 and para 0037-0046) discloses wherein the primary side winding comprises a plurality of first windings, and the lead wire of each first winding passes through the same through channel. Regarding claims 9-10, It has been held that a recitation with respect to the manner in which a claimed apparatus is intended to be employed does not differentiate the claimed apparatus from a prior art apparatus satisfying the claimed structural limitations. Ex parte Masham, 2 USPQ2d 1647 (1987). 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. 2 Claim 1 is rejected under 35 U.S.C. 103 as being unpatentable over Koyama et al.(US 20020017971) in view of Chang et al.(US 20130188329). Regarding claim 1, Koyama et al.( figures 1-2b, 4-7 and para 0029-0050) discloses a magnetic core (10/11), a primary side winding and a secondary side winding (see para 0036), wherein ;the magnetic core comprises a first cover plate (11), a second cover plate (10), a winding column (11a/10a) (see figure 5) and at least two side columns (see figures 1 and 6), and the first cover plate and the second cover plate are respectively connected with top and bottom surfaces the winding column and at least two side columns of the magnetic core (see figures 1/6); at least one of the side columns has a through channel (see opening on left side of the core), the primary side winding (see para 0036) is wound around the winding column; Koyama et al (figure 7) discloses lead wires of a winding passing through the through channel (see figure 7) (see opening on left side of the core), and lead wires of the winding passing through a gap formed by the at least two side columns(see figure 7). Koyama et is silent as to whether a lead wire of the primary side winding passes through the through channel and a lead wire of the secondary side winding passes through a gap formed by the at least two side columns. Chang et al.(figures 5-8 and para 0037-0046) discloses a lead wire (22a or 22b) of the primary side winding passes through the through channel (see figures 6/8), and a lead wire (312a or 312b) of the secondary side winding (30a or 30b) passes through a gap formed by the at least two side columns(see figures 6/8). Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant claimed invention to design wherein a lead wire of the primary side winding passes through the through channel and a lead wire of the secondary side winding passes through a gap formed by the at least two side columns as taught by Chang et al to the inductive device of Koyama et al.so as to give the user the option to dispose the transformer at a greater variety of locations. 3 Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over Chang et al.(US 20130188329) in view of Guan et al.(CN 216648036)(English translation) Regarding claim 6, Chang et al.(figures 5-8 and para 0037-0046) discloses all the limitations as noted above but wherein a chamfer is formed at the through channel of the side column. Guan et al (figures 1-3 and pages 1-2) discloses a teaching of designing core structurers with chamfered corners/edges. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant claimed invention to design a chamfer core structures with chamfered corners/edges as taught by Guan et al to the inductive deuce of Chang et al so as to removes the sharp corners of a magnetic core, which can prevent the leads wires from being damaged and also prevents magnetic saturation at the sharp edges where magnetic flux tends to bunch up, leading to lower core losses and higher energy efficiency. Designing wherein the chamfer is formed at the through channel of the side column would have been an obvious design consideration based on intended application/environment use. Such as to prevent sharp edges from scratching or striping the insulation coating (enamel) on copper wires during the winding process. Chamfered edges will also create a smooth transition, reducing the risk of winding shorts and equipment failure. 4 Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over Chang et al.(US 20130188329) in view of Markowski et al.(US 20120098632). Regarding claim 6, Chang et al.(figures 5-8 and para 0037-0046) discloses all the limitations as noted above but wherein a chamfer is formed at the through channel of the side column. Markowski et al (figures 12,17-18 and para 0058) discloses a teaching of designing core structurers with chamfered corners/edges.(see the core columns have a chamfer structure) Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant claimed invention to design a chamfer core structures with chamfered corners/edges as taught by Markowski et al. to the inductive deuce of Chang et al so as to removes the sharp corners of a magnetic core, which can prevent the leads wires from being damaged and also prevents magnetic saturation at the sharp edges where magnetic flux tends to bunch up, leading to lower core losses and higher energy efficiency. Designing wherein the chamfer is formed at the through channel of the side column would have been an obvious design consideration based on intended application/environment use. Such as to prevent sharp edges from scratching or striping the insulation coating (enamel) on copper wires during the winding process. Chamfered edges will also create a smooth transition, reducing the risk of winding shorts and equipment failure. 5 Claim 7 is rejected under 35 U.S.C. 103 as being unpatentable over Chang et al.(US 20130188329) in view of Lu et al.(US 20190148061). Regarding claim 7, Chang et al.(figures 5-8 and para 0037-0046) discloses a skeleton sleeved on the winding column, and the primary side winding but does not expressly disclose the secondary side winding is wound around the skeleton. Lu et al.(figure 2 and para 0030) discloses a teaching the secondary side winding is wound around the skeleton. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant claimed invention to design wherein the secondary side winding is wound around the skeleton as taught by Lu et al to the inductive device of Chang et al.so as to It provide a rigid, protective housing that shields wires from the abrasive edges of the core and so as to helps manage internal heat buildup by keeping the windings organized and evenly distributed. 6 Claim 7 is rejected under 35 U.S.C. 103 as being unpatentable over Koyama et al.(US 20020017971) in view of Chang et al.(US 20130188329) in further view of Lu et al.(US 20190148061). Regarding claim 7, Koyama et al.(figures 1-2b, 4-7 and para 0029-0050) discloses all the limitations as noted above but does not expressly discloses a skeleton sleeved on the winding column, and the primary side winding and the secondary side winding are wound around the skeleton. Lu et al.(figure 2 and para 0030) discloses a skeleton sleeved on the winding column, and the primary side winding and the secondary side winding are wound around the skeleton. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant claimed invention to design a skeleton sleeved on the winding column, and the primary side winding and the secondary side winding are wound around the skeleton as taught by Lu et al to the inductive device of Koyama et al.so as to It provide a rigid, protective housing that shields wires from the abrasive edges of the core and so as to helps manage internal heat buildup by keeping the windings organized and evenly distributed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RONALD HINSON whose telephone number is (571)270-7915. The examiner can normally be reached M to F; 8 -5. 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, Shawki Ismail can be reached at 571-272-3985. 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. /RONALD HINSON/Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Jul 25, 2023
Application Filed
Jul 01, 2026
Non-Final Rejection mailed — §102, §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

1-2
Expected OA Rounds
74%
Grant Probability
88%
With Interview (+14.3%)
3y 0m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 786 resolved cases by this examiner. Grant probability derived from career allowance rate.

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