Prosecution Insights
Last updated: August 17, 2026
Application No. 18/571,409

WIRELESS POWER TRANSFER DEVICE COMPRISING COIL STRUCTURE AND POWER TRANSFER CIRCUIT FOR WIRELESS POWER TRANSFER, AND WIRELESS POWER RECEPTION DEVICE

Non-Final OA §102§103
Filed
Dec 18, 2023
Priority
Jun 18, 2021 — RE 10-2021-0079386 +2 more
Examiner
NGUYEN, TUYEN T
Art Unit
Tech Center
Assignee
Kia Corporation
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
1019 granted / 1251 resolved
+21.5% vs TC avg
Minimal +1% lift
Without
With
+1.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
56 currently pending
Career history
1308
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
56.5%
+16.5% vs TC avg
§102
19.7%
-20.3% vs TC avg
§112
18.5%
-21.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1251 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 . 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)(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. Claim(s) 1-9 and 14-20 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Schmidt et al. [WO 2007/137683 A1]. Regarding claims 1-2, Schmidt et al. discloses a power transmission pad/device configured to wirelessly transmit power to a reception pad comprising a secondary coil, the power transmission pad/device [figures 1a-1b] comprising: - a primary coil [20] arranged to surround a central space; - a ferrite member [11-15] configured to form a magnetic coupling with the primary coil; and - a housing [30] configured to support the primary coil and the ferrite member, wherein the primary coil comprises a flat wire wound at least once [figures 1a-1b], wherein corners of the primary coil are rounded at least partially [figure 1a]. Regarding claim 3, Schmidt et al. discloses corners of a cross section of the flat wire of the primary coil are rounded at least partially [figure 1a]. Regarding claims 4-5, Schmidt et al. discloses the primary coil has a planar structure where a major axis of a cross section of the flat wire is perpendicular to a central axis of the primary coil [figures 1a-1b], wherein the primary coil has a vertical type structure where a major axis of a cross section of the flat wire is parallel with a central axis of the primary coil [figure 1b]. Regarding claims 6-7, Schmidt et al. discloses the primary coil has a shape that each of a plurality of flat wire elements is wound to surround the central space [figures 1a-1b], wherein the plurality of flat wire elements are arranged in a concentric shape sharing a central axis of the primary coil [figures 1a-1b]. Regarding claims 8-9, Schmidt et al. discloses the ferrite member is disposed such that a first area into which the primary coil is projected on a horizontal plane perpendicular to a central axis of the primary coil is included in a second area into which the ferrite member is projected on the horizontal plane, wherein the ferrite member is formed to include a void or space correspondingly to at least a portion of the central space of the primary coil [figures 1a-1b]. Regarding claim 14, Schmidt et al. discloses a wireless [contactless] power transfer system configured to wirelessly transmit power from a transmission pad to a reception pad, the wireless power transfer system comprising: the transmission pad comprising a primary coil [figures 1a-1c]; and the reception pad comprising a secondary coil, wherein the transmission pad comprises: the primary coil [20] arranged to surround a central space; a ferrite member [11-15] configured to form a magnetic coupling with the primary coil; and a housing [30] configured to support the primary coil and the ferrite member, wherein the primary coil comprises a flat wire wound at least once [figures 1a-1b]. Regarding claims 15-16, Schmidt et al. discloses corners of a cross section of the flat wire of the primary coil are rounded at least partially [figure 1a], wherein corners of a cross section of the flat wire of the primary coil are rounded at least partially [figures 1a-1b]. Regarding claims 17-18, Schmidt et al. discloses the primary coil has a planar structure where a major axis of a cross section of the flat wire is perpendicular to a central axis of the primary coil [figures 1a-1b], wherein the primary coil has a vertical type structure where a major axis of a cross section of the flat wire is parallel with a central axis of the primary coil [figure 1b]. Regarding claims 19-20, Schmidt et al. discloses the primary coil has a shape that each of a plurality of flat wire elements is wound to surround the central space [figures 1a-1b], wherein the plurality of flat wire elements are arranged in a concentric shape sharing a central axis of the primary coil [figures 1a-1b] and wherein the ferrite member is disposed such that a first area into which the primary coil is projected on a horizontal plane perpendicular to a central axis of the primary coil is included in a second area into which the ferrite member is projected on the horizontal plane [figures 1a-1b]. 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. Claim(s) 10-13 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kentaro et al. [EP 3432328 A1] in view of Schmidt et al. Regarding claim 1, Kentaro et al. discloses power reception pad/device [figures 2-3] configured to wirelessly receive power from a transmission pad comprising a primary coil, the power reception pad comprising: - a secondary coil [21] arranged to surround a central space and wound at least once; - a ferrite member [42-45] configured to form a magnetic coupling with the secondary coil; and - a housing [10, 46, 50] configured to support the secondary coil and the ferrite member. Kentaro et al. disclose the instant claimed invention except for the secondary coil comprises a flat wire. Schmidt et al. discloses a flat wire for coil of the wireless device [see above]. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to use flat wire for the secondary coil of Kentaro et al., as suggested by Schmidt et al., for the purpose of facilitating manufacturing and/or assembling and low cost. Regarding claim 11, both Kentaro et al. and Schmidt et al. disclose corners of the coil are rounded at least partially. Regarding claim 12, Schmidt et al. discloses corners of a cross section of the flat wire of the coil are rounded at least partially. Regarding claim 13, Schmidt et al. the ferrite member is disposed such that a first area into which the secondary coil is projected on a horizontal plane perpendicular to a central axis of the secondary coil is included in a second area into which the ferrite member is projected on the horizontal plane [figures 1a-1b]. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to incorporate the ferrite members arrangement into Kentaro et al. device for the purpose of improving magnetic flux/field. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TUYEN T NGUYEN whose telephone number is (571)272-1996. The examiner can normally be reached Mon - Fri 8:30-5:30. 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. /TUYEN T NGUYEN/ Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Dec 18, 2023
Application Filed
Aug 05, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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A TRANSFORMER ARRANGEMENT
1y 11m to grant Granted Aug 04, 2026
Patent 12695021
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Patent 12695020
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3y 10m to grant Granted Jul 28, 2026
Patent 12695019
ELECTRIC DEVICE WITH FORCED DIRECT COOLING
3y 6m to grant Granted Jul 28, 2026
Patent 12688967
INDUCTOR DEVICE
4y 7m to grant Granted Jul 21, 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
82%
Grant Probability
83%
With Interview (+1.1%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1251 resolved cases by this examiner. Grant probability derived from career allowance rate.

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