Prosecution Insights
Last updated: October 25, 2026
Application No. 18/598,486

TRANSFORMER ARRANGEMENT

Final Rejection §102§103
Filed
Mar 07, 2024
Priority
Mar 16, 2023 — EU 23162470.1
Examiner
ESKRIDGE, CORY W
Art Unit
3624
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Infineon Technologies AG
OA Round
2 (Final)
73%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
475 granted / 652 resolved
+20.9% vs TC avg
Moderate +8% lift
Without
With
+7.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
31 currently pending
Career history
683
Total Applications
across all art units

Statute-Specific Performance

§101
15.3%
-24.7% vs TC avg
§103
45.1%
+5.1% vs TC avg
§102
27.4%
-12.6% vs TC avg
§112
9.5%
-30.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 652 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 . Response to Arguments Applicant’s arguments with respect to claims 1 – 7, and 9 – 15 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. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 – 7 and 9 – 15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wahl (US 2013/0087921). Regarding claim 1, Wahl teaches (FIG. 10): A transformer arrangement, comprising: an electrically insulating carrier (40); a first integrated circuit comprising a first semiconductor die (42); and a transformer comprising a first winding (38) and a second winding (39) that are inductively coupled ([0046]), wherein one of the first and second windings is connected to the first integrated circuit ([0046]), wherein each of the first and second windings is embedded in or arranged on top of the electrically insulating carrier (FIG. 10), wherein the electrically insulating carrier comprises an insulating core layer (40) and a first insulating layer (34/35/36) formed on top of a first surface of the insulating core layer, wherein the first semiconductor die is embedded in the insulating core layer (FIG. 10), wherein at least one of the first winding and the second winding is embedded in the first insulating layer (FIG. 10). Regarding claim 2, Wahl teaches (FIG. 17): The transformer arrangement of claim 1, further comprising: a second integrated circuit (71/72) comprising a second semiconductor die embedded in or arranged on top of the electrically insulating carrier, wherein the other one of the first and second windings is connected to the second integrated circuit (FIG. 17). Regarding claim 3, Wahl teaches (FIG. 10): The transformer arrangement of claim 1, wherein the first integrated circuit comprises one of a transmitter circuit and a receiver circuit ([0051]). Regarding claim 4, Wahl teaches (FIG. 10): The transformer arrangement of claim 1, further comprising: a package comprising a package body and a plurality of legs protruding from the body, wherein the electrically insulating carrier is embedded in the package body. Regarding claim 5, Wahl teaches (FIG. 17): The transformer arrangement of claim 4, further comprising: a further semiconductor die embedded in the package body and spaced apart from the electrically insulating carrier. Regarding claim 6, Wahl teaches (FIG. 10): The transformer arrangement of claim 1, wherein the first winding is arranged in a first horizontal plane of the electrically insulating carrier, wherein the second winding is arranged in a second horizontal plane of the electrically insulating carrier, and wherein the first horizontal plane is spaced apart from the second horizontal plane in a vertical direction of the electrically insulating carrier. Regarding claim 10, Wahl teaches (FIG. 19): The transformer arrangement of claim 1, wherein the other one of the first winding and the second winding is embedded in the insulating core layer (78). Regarding claim 11, Wahl teaches (FIG. 10): The transformer arrangement of claim 1,wherein the insulating core layer comprises a mold compound ([0045]). Regarding claim 12, Wahl teaches (FIG. 10): The transformer arrangement of claim 1,wherein the insulating core layer comprises a glass ([0035]). Regarding claim 15, Wahl teaches (FIG. 10): The transformer arrangement of claim 1, wherein the one of the first and second windings that is connected to the first integrated circuit is connected to the first integrated circuit through bond wires or through connections arranged within the electrically insulating carrier. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. 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 7 is rejected under 35 U.S.C. 103 as being unpatentable over Wahl as applied to claim 1 above, and further in view of French et al. (US 2012/0002377). Regarding claim 7, Wahl teaches various transformer embodiments, but fails to expressly disclose: The transformer arrangement of claim 1, wherein the first winding and the second winding are arranged in a same horizontal plane of the electrically insulating carrier. However, French teaches a transformer for galvanic isolation wherein the two coils are arranged on a same horizontal plane (FIG. 4). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to utilize the conventional single layer transformer design of French in the device of Wahl for the predictable advantage of reducing metallization layers in a conventional manner. Claim 7 is rejected under 35 U.S.C. 103 as being unpatentable over Wahl as applied to claim 1 above, and further in view of Meyer et al. (US 2008/0135977). Regarding claim 9, Wahl teaches various transformer embodiments, but fails to expressly disclose: The transformer arrangement of claim 1, wherein the electrically insulating carrier further comprises a second insulating layer formed on top of a second surface opposite the first surface of the insulating core layer, and wherein the other one of the first winding and the second winding is embedded in the second insulating layer. However, Meyer teaches forming winding structures on both the upper and lower surfaces of an embedded device structure (FIG. 25). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to utilize the conventional double sided layout of Meyer to enable an embedded device with transformer structure in a thin package. 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 CORY W ESKRIDGE whose telephone number is (571)272-0543. The examiner can normally be reached M - F 9 - 5. 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, Julio Madonado can be reached at 571-272-1864. 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. /CORY W ESKRIDGE/Primary Examiner, Art Unit 2898
Read full office action

Prosecution Timeline

Mar 07, 2024
Application Filed
May 05, 2026
Non-Final Rejection mailed — §102, §103
Jul 23, 2026
Response Filed
Sep 30, 2026
Final Rejection mailed — §102, §103 (current)

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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
73%
Grant Probability
80%
With Interview (+7.6%)
2y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 652 resolved cases by this examiner. Grant probability derived from career allowance rate.

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