Prosecution Insights
Last updated: October 01, 2026
Application No. 18/018,152

WINDING ARRANGEMENT, TRANSFORMER AND METHOD FOR PRODUCING A WINDING ARRANGEMENT

Final Rejection §102
Filed
Jan 26, 2023
Priority
Aug 11, 2020 — EU 20190466.1 +1 more
Examiner
NGUYEN, TUYEN T
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Hitachi Ltd.
OA Round
2 (Final)
82%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
1031 granted / 1263 resolved
+13.6% vs TC avg
Minimal +1% lift
Without
With
+1.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
49 currently pending
Career history
1310
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
56.5%
+16.5% vs TC avg
§102
19.8%
-20.2% vs TC avg
§112
18.3%
-21.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1263 resolved cases

Office Action

§102
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)(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. (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) 1-3 and 13-15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Fujita Shinji et al. [WO 2019181152 A1]. Regarding claims 1-2, Fujita Shinji et al. disclose winding arrangement for a transformer [figures 1A-5], wherein the winding arrangement comprises: - a winding block [4, 6]; - a top end press element/structure [9, 10, 11] and a bottom end press element/structure [9, 10, 11]; wherein the top end press element/structure is arranged on a top end of the winding block and the bottom end press element/structure is arranged on a bottom end of the winding block, and - at least one stabilizing element [3, 5], wherein the at least one stabilizing element is arranged to make the winding arrangement self-supporting and isolated from short circuit forces, wherein the at least one stabilizing element comprises at least one insulated cylinder [3, 5] arranged around the winding block and between the top end press element/structure and the bottom end press element/structure, wherein at least one stabilizing element is assembled with the winding block to compress the winding block [figures 1A-5]. Regarding claims 3 and 13, Fujita Shinji et al. disclose the use of the winding arrangement in a transformer [stationary induction apparatus such as a transformer], wherein at least one stabilizing element is assembled with the winding block to compress the winding block [figures 1A-5]. Regarding claims 14-15, Fujita Shinji et al. disclose the winding block comprises one or more windings [4, 6], wherein the winding arrangement further comprises a barrier [] around each of the one or more windings. Claim(s) 16-17 and 19-21 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Zhao et al. [CN 109671559 A]. Regarding claim 16, Zhao et al. discloses a winding arrangement for a transformer [figures 1-4], wherein the winding arrangement comprises: - a winding block [figures 3-4]; - a top end press element [9] arranged on a top end of the winding block; - a bottom end press element [10] arranged on a bottom end of the winding block; and - a stabilizing element connected to the top end press element and the bottom end press element, wherein the stabilizing element is arranged to make the winding arrangement self-supporting and isolated from short circuit forces; comprises at least one insulated tie-rod [11] made of fiber-glass or plastic wherein at least one stabilizing element is assembled with the winding block to compress the winding block and arranged between top end press element and the bottom end press element, wherein the winding arrangement further comprises a barrier [epoxy resin arranged between windings 1, 2, 3, see translation of the specification] around each of one or more windings [1, 2, 3]. Zhao et al. further discloses the insulated tie-rod [11] arrange in radial space of the winding arrangement [figure 3] used for dielectric purposes [or electromagnetic influence]. Regarding claim 17, Zhao et al. discloses the winding block comprises the one or more windings [1, 2, 3, figure 3]. Regarding claims 19-20, Zhao et al. discloses the winding block is locked or fixed with the stabilizing element [figure 4], wherein the stabilizing element is assembled with the winding block to compress the winding block [figure 4]. Regarding claim 21, Zhao et al. discloses the transformer using the winding arrangement. Response to Arguments Applicant’s arguments with respect to claim(s) 1-3, 13-17 and 19-21 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. 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

Jan 26, 2023
Application Filed
Mar 12, 2026
Non-Final Rejection mailed — §102
Jun 12, 2026
Response Filed
Aug 25, 2026
Final Rejection mailed — §102
Sep 28, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12749613
INDUCTOR DEVICE
3y 10m to grant Granted Sep 29, 2026
Patent 12744149
WOUND CORE
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Patent 12738404
MULTILAYER COIL COMPONENT
3y 7m to grant Granted Sep 15, 2026
Patent 12731723
INTEGRATED BOTTOM SUNKEN SURFACE MOUNT AND/OR SWING INDUCTOR AND FABRICATION METHODS
3y 10m to grant Granted Sep 08, 2026
Patent 12725726
INDUCTOR
3y 11m to grant Granted Sep 01, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
82%
Grant Probability
83%
With Interview (+1.2%)
2y 7m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1263 resolved cases by this examiner. Grant probability derived from career allowance rate.

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