Prosecution Insights
Last updated: October 02, 2026
Application No. 18/498,106

SINGLE TURN TRANSFORMER WITH MIDDLE POINT CONNECTION

Non-Final OA §102§103
Filed
Oct 31, 2023
Priority
Jan 17, 2023 — provisional 63/480,172
Examiner
LIAN, MANG TIN BIK
Art Unit
Tech Center
Assignee
Lear Corporation
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
945 granted / 1342 resolved
+10.4% vs TC avg
Strong +26% interview lift
Without
With
+26.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
71 currently pending
Career history
1412
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
56.2%
+16.2% vs TC avg
§102
21.8%
-18.2% vs TC avg
§112
20.0%
-20.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1342 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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 10/31/2023 and 12/11/2023 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Drawings The drawings received on 10/31/2023 are acceptable. 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. Claims 1, 2, 5-8, 10, 12 and 14 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Charpentier (U.S. Patent No. 4,176,335). With respect to claim 1, Charpentier teaches a transformer (FIG. 1) comprising: a first electrical conductor 5 and or 6 having a plurality of turns; and a second electrical conductor 13B having only a single turn comprising a first leg 13c (annotated FIG. 1) and a second leg 13d, wherein a first electrical connection 1B for the second electrical conductor is formed at an end 13e of the first leg, a second electrical connection 3B for the second electrical conductor is formed at an end 13f of the second leg, and a middle point electrical connection 2B for the second electrical conductor is formed at a juncture 13g of the first leg and the second leg (col. 4, lines 6-11 and 66-68, col. 5, lines 3-7). PNG media_image1.png 723 492 media_image1.png Greyscale With respect to claim 2, Charpentier teaches the transformer according to claim 1 wherein the second electrical conductor comprises a plate (col. 4, lines 15-18). With respect to claim 5, Charpentier teaches the transformer according to claim 1 further comprising a ferromagnetic material 10 surrounding the first electrical conductor and the second electrical conductor (col. 3, line 67 to col. 4, line 3) . With respect to claim 6, Charpentier teaches the transformer according to claim 1 wherein the first electrical conductor comprises a wire (col. 4, lines 6-12). With respect to claim 7, Charpentier teaches the transformer according to claim 6 further comprising a plastic reel 12a for supporting the wire (col. 4, lines 4-12). With respect to claim 8, Charpentier teaches the transformer according to claim 1 wherein the first electrical connection comprises at least one member (a piece of electrical connection 1B) extending from the end of the first leg (col. 5, lines 3-7). With respect to claim 10, Charpentier teaches the transformer according to claim 1 wherein the second electrical connection comprises at least one member (a piece of electrical connection 3B) extending from the end of the second leg (col. 5, lines 3-7). With respect to claim 12, Charpentier teaches the transformer according to claim 1 wherein the middle point electrical connection comprises at least one member (a piece of electrical connection 2B) extending from the juncture of the first leg and the second leg (col 4, lines 66-68). With respect to claim 14, Charpentier teaches the transformer according to claim 1 wherein the first coil receives a voltage of greater than or equal to 48 volts and the second coil produces a voltage of less than or equal to 24 volts (col. 3, lines 12-20). Charpentier teaches the transformer structure as claimed. Therefore, the transformer of Charpentier would inherently have the claimed limitations. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 3 and 4 are rejected under 35 U.S.C. 103 as being unpatentable over Charpentier, as applied to claim 1 above, in view of Fang et al. (U.S. Patent No. 7,446,642 B2, hereinafter “Fang”). With respect to claim 3, Charpentier teaches the transformer according to claim 1. Charpentier does not expressly teach a ferromagnetic core interposed between the first electrical conductor and the second electrical conductor. Fang teaches a transformer 2 (FIG. 3) comprising a ferromagnetic core 25 interposed between the first electrical conductor 22 and the second electrical conductor 23 (col. 3, lines 1-4). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the ferromagnetic core between the first and second electrical conductors as taught by Fang to the transformer of Charpentier to provide the required magnetic path to meet design requirements. With respect to claim 4, Charpentier in view of Fang teaches the transformer according to claim 3 wherein the ferromagnetic core comprises a plate (Fang, col. 3, lines 1-4). Claims 9 and 11 are rejected under 35 U.S.C. 103 as being unpatentable over Charpentier, as applied to claim 1 above, in view of Tsai et al. (U.S. PG. Pub. No. 2009/0309684 A1, hereinafter “Tsai”). With respect to claim 9, Charpentier teaches the transformer according to claim 1. Charpentier does not expressly teach the first electrical connection provides electrical connection and mechanical fixation of the transformer to a printed circuit board. Tsai teaches a transformer 1 (FIGs. 1 and 2), wherein the first electrical connection 131 provides electrical connection and mechanical fixation of the transformer to a printed circuit board 2 (para. [0024]). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the electrical connection mechanical fixation of the transformer to a printed circuit board as taught by Tsai to the transformer of Charpentier to provide the required electrical connection between the transformer and other electrical elements. With respect to claim 11, Charpentier teaches the transformer according to claim 1. Charpentier does not expressly teach the second electrical connection provides electrical connection and mechanical fixation of the transformer to a printed circuit board. Tsai teaches a transformer 1 (FIGs. 1 and 2), wherein the second electrical connection 131 provides electrical connection and mechanical fixation of the transformer to a printed circuit board 2 (para. [0024]). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the electrical connection mechanical fixation of the transformer to a printed circuit board as taught by Tsai to the transformer of Charpentier to provide the required electrical connection between the transformer and other electrical elements. Claim 13 is rejected under 35 U.S.C. 103 as being unpatentable over Charpentier, as applied to claim 1 above, in view of Lazzerini et al. (U.S. Patent No. 9,000,878 B1, hereinafter “Lazzerini”). With respect to claim 13, Charpentier teaches the transformer according to claim 1. Charpentier does not expressly teach the middle point electrical connection provides electrical connection and mechanical fixation of the transformer to a printed circuit board. Lazzerini teaches a transformer 1 (FIG. 10B), wherein the middle point electrical connection 202 provides electrical connection and mechanical fixation of the transformer to a printed circuit board (not expressly shown) (col. 9, lines 35-41). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the electrical connection mechanical fixation of the transformer to a printed circuit board as taught by Tsai to the transformer of Charpentier to provide the required electrical connection between the transformer and other electrical elements. Claim 15 is rejected under 35 U.S.C. 103 as being unpatentable over Tsai in view of Charpentier. With respect to claim 15, Tsai teaches a DC-to-DC converter (FIG. 4) comprising the transformer 1 (para. [0026]). Tsai does not expressly teach the transformer according to claim 1. Charpentier teaches a transformer (FIG. 1) according to claim 1 (col. 4, lines 6-11 and 66-68, col. 5, lines 3-7). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the transformer as taught by Charpentier to the DC-to-DC converter of Tsai to provide low impedance output paths (col. 2, lines 25-32). Claims 16, 17 and 19 are rejected under 35 U.S.C. 103 as being unpatentable over Charpentier in view of Lazzerini. With respect to claim 16, Charpentier teaches a transformer (FIG. 1) comprising: a first electrical conductor 5 and or 6 having a plurality of turns; a second electrical conductor 13B having only a single turn comprising a first leg 13c (annotated FIG. 1) and a second leg 13d; a first electrical connection 1B for the second electrical conductor comprising at least one member extending from the first leg; a second electrical connection 3B for the second electrical conductor comprising at least one member extending from the end of the second leg; and a middle point electrical connection 2B for the second electrical conductor comprising at least one member extending from a juncture of the first leg and the second leg (col. 4, lines 6-11 and 66-68, col. 5, lines 3-7). Charpentier does not expressly teach a first electrical connection for the second electrical conductor comprising at least one member extending from the first leg to provide electrical connection and mechanical fixation of the transformer to a printed circuit board; a second electrical connection for the second electrical conductor comprising at least one member extending from the end of the second leg to provide electrical connection and mechanical fixation of the transformer to the printed circuit board; and a middle point electrical connection for the second electrical conductor comprising at least one member extending from a juncture of the first leg and the second leg to provide electrical connection and mechanical fixation of the transformer to the printed circuit board. Lazzerini teaches a transformer 1 (FIGs. 1 and 2) comprising: a first electrical connection 200 a for the second electrical conductor comprising at least one member (end member) extending from the first leg to provide electrical connection and mechanical fixation of the transformer to a printed circuit board (not expressly shown); a second electrical connection 204 for the second electrical conductor comprising at least one member (end member) extending from the end of the second leg to provide electrical connection and mechanical fixation of the transformer to the printed circuit board; and a middle point electrical connection 202 for the second electrical conductor comprising at least one member (end member) extending from a juncture of the first leg and the second leg to provide electrical connection and mechanical fixation of the transformer to the printed circuit board (col. 9, lines 35-41). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the electrical connection mechanical fixation of the transformer to a printed circuit board as taught by Tsai to the transformer of Charpentier to provide a center tap connection of the transformer to get different output as needed to meet design requirements. With respect to claim 17, Charpentier in view of Lazzerini teaches the transformer according to claim 16 wherein the second electrical conductor comprises a plate (Charpentier, col. 4, lines 15-18). With respect to claim 19, Charpentier in view of Lazzerini teaches the transformer according to claim 16 wherein the first coil receives a voltage of greater than or equal to 48 volts and the second coil produces a voltage of less than or equal to 24 volts (Charpentier, col. 3, lines 12-20). Charpentier teaches the transformer structure as claimed. Therefore, the transformer of Charpentier would inherently have the claimed limitations. Claim 18 is rejected under 35 U.S.C. 103 as being unpatentable over Charpentier in view of Lazzerini, as applied to claim 16 above, and further in view of Fang. With respect to claim 18, Charpentier in view of Lazzerini teaches the transformer according to claim 16. Charpentier in view of Lazzerini does not expressly teach a ferromagnetic plate interposed between the first electrical conductor and the second electrical conductor. Fang teaches a transformer 2 (FIG. 3) comprising a ferromagnetic core 25 interposed between the first electrical conductor 22 and the second electrical conductor 23 (col. 3, lines 1-4). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the ferromagnetic core between the first and second electrical conductors as taught by Fang to the transformer of Charpentier in view of Lazzerini to provide the required magnetic path to meet design requirements. Claim 20 is rejected under 35 U.S.C. 103 as being unpatentable over Tsai in view of Charpentier and Lazzerini. With respect to claim 20, Tsai teaches a DC-to-DC converter (FIG. 4) comprising the transformer (para. [0026]). Tsai does not expressly teach the transformer according to claim 16. Charpentier in view of Lazzerini teaches a transformer (FIG. 1) according to claim 1 (col. 4, lines 6-11 and 66-68, col. 5, lines 3-7). It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to have the transformer as taught by Charpentier in view of Lazzerini to the DC-to-DC converter of Tsai to provide low impedance output paths (col. 2, lines 25-32). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. A list of pertinent prior art is attached in form PTO-892. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MANGTIN LIAN whose telephone number is (571)270-5729. The examiner can normally be reached Monday-Friday 0800-1700. 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 S. 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. /MANG TIN BIK LIAN/ Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Oct 31, 2023
Application Filed
Sep 15, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12738411
INDUCTOR PACKAGES EMPLOYING WIRE BONDS OVER A LEAD FRAME TO FORM INTEGRATED INDUCTOR(S), AND RELATED INTEGRATED CIRCUIT (IC) PACKAGES AND FABRICATION METHODS
4y 1m to grant Granted Sep 15, 2026
Patent 12738409
COIL COMPONENT
4y 2m to grant Granted Sep 15, 2026
Patent 12738415
HV APPARATUS AND A METHOD OF MANUFACTURING SUCH APPARATUS
3y 6m to grant Granted Sep 15, 2026
Patent 12731724
COIL COMPONENT
3y 8m to grant Granted Sep 08, 2026
Patent 12725727
DRY-TYPE TRANSFORMER AND WINDING METHOD THEREOF
4y 3m to grant Granted Sep 01, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
70%
Grant Probability
96%
With Interview (+26.0%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1342 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month