Prosecution Insights
Last updated: August 18, 2026
Application No. 18/328,521

COIL DEVICE

Non-Final OA §102§103§112
Filed
Jun 02, 2023
Priority
Jun 13, 2022 — JP 2022-095150
Examiner
NGUYEN, TUYEN T
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
TDK 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
+13.5% 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 §112
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 with traverse of Species 1, Figures 1-5 in the reply filed on 5/8/2026 is acknowledged. The traversal is on the ground(s) that Claims 1-3, 5-7, 9-10 and 12-17 read on Figures 1-5 with claims 1-2, 10, 12-17 generic and searching all Species together without serious burden on Examiner. This is not found persuasive because searching these Species together require additional search and/or consideration in other areas, class/subclass. The requirement is still deemed proper and is therefore made FINAL. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-3, 5-7, 9-10 and 12-17 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding claim 1, applicant should clarify the structure and/or arrangement of the exposed portion intended by “the exposed portion includes a bent portion” relative to the electrode and/or the core. Claims 2-3, 5-7, 9-10 and 12-17 inherit the defect of the parent claim. 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) 1-3, 5-7, 9-10 and 12-16, as best understood in view of the rejection under 35 USC 112 second paragraph, is/are rejected under 35 U.S.C. 103 as being unpatentable over Claim(s) 1, 10 and 13, as best understood in view of the rejection under 35 USC 112 second paragraph, is/are rejected under 35 U.S.C. 102(a) (2) as anticipated by or, in the alternative, under 35 U.S.C. 103 as obvious over Naoya et al. [WO 2020/179298]. Regarding claim 1, Naoya et al. discloses coil device [figure 3] comprising: - a core body [2]; - a coil including: a winding portion [3a] disposed inside the core and including a lead portion [3] leading from the winding portion; and - an electrode [5] formed on an electrode formation surface [4] of the core, wherein the lead portion includes a terminal portion extending to the electrode formation surface [figure 3], the terminal portion includes: an embedded portion embedded inside the core [figure 3]; and an exposed portion exposed from the electrode formation surface and connected to the electrode [figure 3], wherein the electrode is made of a conductive paste [specification]. Naoya et al. further discloses the lead portion includes bent portions [7, 13 of figure 3], wherein the bent portions [7, 13] could be “exposed” to connect to external terminals [5], wherein the bent portion has a substantially U shape [figure 3]. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to “expose” end portions [7, 13] to external side of the core body for the purpose of providing external connection to external terminals. Regarding claims 2-3 and 14, Naoya et al. discloses the exposed portion includes a first extension portion [7, 13] and a second extension portion [7, 13] extending along the electrode formation surface and continuing via the bent portion, wherein the first extension portion and the second extension portion are arranged substantially in parallel [figure 3], wherein the electrode has a maximum thickness in a region between the first extension portion and the second extension portion [figure 3]. Regarding claim 5, Naoya et al. further discloses the electrode includes a first electrode and a second electrode [5], the first electrode and the second electrode are arranged separately along a first direction, and the first extension portion and the second extension portion extend along a second direction [figure 3]. Regarding claims 6-7, the specific arrangement and/or location of the bent “exposed” portion and extension portion would have been an obvious design consideration for the purpose of facilitating and/or improving surface mounting and/or connecting. Regarding claim 9, Naoya et al. further discloses the lead portion includes a connection portion connecting the winding portion and the terminal portion [figure 3], the first extension portion [13] is connected to the connection portion [figure 3], and the second extension portion [7] is disposed closer to a center of the core than the first extension portion [figure 3]. Regarding claim 12, Naoya et al. discloses the lead portion includes a first lead portion and a second lead portion [3, 7, 13], the terminal portion includes: a first terminal portion [5] provided on the first lead portion; and a second terminal portion [5] provided on the second lead portion, the exposed portion includes: a first exposed portion provided on the first terminal portion; and a second exposed portion provided on the second terminal portion, and the first exposed portion and the second exposed portion have substantially the same shape [figure 3]. Regarding claim 15, Naoya et al. discloses the coil comprises a wire covered with an insulating film, and a surface of the embedded portion is covered with the insulating film [specification]. Regarding claim 16, Naoya et al. discloses the coil comprises a wire covered with an insulating film, and an end of the exposed portion in its width direction orthogonal to its extension direction is covered with the insulating film [figure 3]. Allowable Subject Matter Claim 17 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: The prior art of record do not teach or disclose, in the claimed combination thereof, the coil further comprises a wire covered with an insulating film, an end of the exposed portion in its width direction orthogonal to its extension direction is covered with the insulating film, and the insulating film has a larger thickness on the side where the first extension portion and the second extension portion are opposed to each other than on the side where the first extension portion and the second extension portion are not opposed to each other. 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

Jun 02, 2023
Application Filed
Jul 29, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12700536
A TRANSFORMER ARRANGEMENT
1y 11m to grant Granted Aug 04, 2026
Patent 12695021
SYMMETRIC SPLIT TRANSFORMER FOR EMI REDUCTION
5y 8m to grant Granted Jul 28, 2026
Patent 12695020
INDUCTOR AND ELECTRONIC DEVICE
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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