Prosecution Insights
Last updated: July 17, 2026
Application No. 18/105,343

POWER TRANSFORMER HAVING A NOISE REDUCTION FUNCTION

Non-Final OA §102§103
Filed
Feb 03, 2023
Priority
Aug 12, 2022 — TW 111208755
Examiner
NGUYEN, TUYEN T
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Fortune Electric Co. Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
1014 granted / 1245 resolved
+13.4% vs TC avg
Minimal +1% lift
Without
With
+0.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
57 currently pending
Career history
1306
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
82.5%
+42.5% vs TC avg
§102
5.6%
-34.4% vs TC avg
§112
5.8%
-34.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1245 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 B, Figure 3, Claims 1 and 3-10 in the reply filed on 2/6/2026 is acknowledged. 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, 7 and 9 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Matthews [US 1,846,887]. Regarding claims 1 and 7, Matthews discloses a transformer [figures 1-2] comprising: - a transformer housing including a sidewall [15] and an accommodating space surrounded by the sidewall, wherein the sidewall has a vacuum or air/space layer formed therein [figures 1-2]; and - an electromagnetic assembly disposed in the accommodating space and including an iron core and a coil structure disposed on the iron core [12], wherein the iron core includes a plurality of limb portions, and the coil structure includes a plurality of core windings that are respectively wound onto the limb portions [figures 1-2]. Regarding claim 9, Matthews discloses an electrical insulating oil [11] is present in the accommodating space of the transformer housing, and the electromagnetic assembly is immersed in the electrical insulating oil [figures 1-2]. 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) 3-6 and 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Matthews in view of Specht et al. [US 3,260,974]. Regarding claims 3 and 5, Matthew discloses the instant claimed invention except for reinforcing structure. Specht et al. discloses a transformer [figure 2 or 4] comprising: - a tank [28, 86]; - a core/coil assembly [32, 34] disposed inside the tank; - oil [162] filled the tank and the core/coil assembly emerged in the tank with oil; and - reinforcing structure [30, 31, 100, 104, 106] disposed on outside of the tank, wherein at least one of the reinforcing structure formed of anti-vibration material [glass fiber or air, column 3], wherein the at least one hollow reinforcing structure surrounds the sidewall of the transformer housing [figure 2 or 4]. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to include reinforcing structure to the tank of Matthews, as suggested by Specht et al., for the purpose of providing reinforcing. Regarding claim 4, Specht et al. further discloses other reinforcing structure [106] attached to the tank and filled with sand [108]. Regarding claim 6, Specht et al. discloses more than one reinforcing structure arranged outside the tank [see 30, 31, 100, 104 of figures 2 and 4]. Regarding claim 8, Specht et al. further discloses a plurality of fastening members [35, 95] that are configured to join together the iron core and the coil structure. Claim(s) 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Matthews in view of Zheng [CN 207409348 U]. Regarding claim 10, Matthews disclose the instant claimed invention except for an oil storage tank. Zheng discloses the use of an oil storage tank or reservoir [17] in communication with a transformer structure arranged inside a housing [15] filled with oil. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to include an oil storage tank in Matthews, as suggested by Zheng, for the purpose of providing oil for the transformer. 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

Feb 03, 2023
Application Filed
May 13, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683065
COIL COMPONENT
3y 2m to grant Granted Jul 14, 2026
Patent 12665120
REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
3y 9m to grant Granted Jun 23, 2026
Patent 12665121
Stationary Induction Electric Apparatus
3y 7m to grant Granted Jun 23, 2026
Patent 12665124
COIL COMPONENT
3y 5m to grant Granted Jun 23, 2026
Patent 12658353
REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
3y 9m to grant Granted Jun 16, 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
81%
Grant Probability
82%
With Interview (+0.9%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1245 resolved cases by this examiner. Grant probability derived from career allowance rate.

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