Prosecution Insights
Last updated: April 19, 2026
Application No. 18/468,367

ELECTROMAGNETIC FILTER ASSEMBLY FOR ATTENUATING ELECTROMAGNETIC INTERFERENCES, FEEDTHROUGH ASSEMBLY, ENCLOSURE ASSEMBLY AND VEHICLE

Non-Final OA §102
Filed
Sep 15, 2023
Examiner
SASSERATH, ELISA MARIE
Art Unit
2841
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Volvo Car Corporation
OA Round
1 (Non-Final)
91%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 91% — above average
91%
Career Allow Rate
29 granted / 32 resolved
+22.6% vs TC avg
Moderate +11% lift
Without
With
+11.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
14 currently pending
Career history
46
Total Applications
across all art units

Statute-Specific Performance

§103
59.9%
+19.9% vs TC avg
§102
27.1%
-12.9% vs TC avg
§112
13.0%
-27.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 32 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 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 1-20 are rejected under 35 U.S.C. 102(a)(1) as being unpatentable by Stevenson et. al (US 11147977 B2) hereafter referred to as Stevenson. Regarding claim 1, Stevenson teaches an electromagnetic filter assembly for attenuating electromagnetic interferences, comprising: a base plate (comprised of 118, 112, 116, and 110) comprising a first opening (opening to accommodate 114 lead wire) configured to be penetrated by a first conductor (114 lead wire) from which an electromagnetic interference at least partially originates (col 2 lines 38-60), wherein the base plate comprises an electrically non-conductive carrier layer (118 insulator), an electrically conductive first layer section (110 capacitor), and an electrically conductive second layer section (112 hermetic seal), wherein the first layer section comprises a shielding interface (102 and 104 internal electrodes) configured to connect the first layer section to a shielding in an electrically conductive manner (col 3 lines 20-25), wherein the second layer section comprises a first conductor interface (120 metal ferrule) configured to connect the second layer section to the first conductor in an electrically conductive manner (col 25 lines 13-22) , and wherein the first layer section and the second layer section are capacitively coupled via at least two first discrete capacitor elements (114 lead wire, Fig 3). Regarding claim 2, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the first layer section (110 capacitor) and the second layer section (112 hermetic seal) are arranged in a common plane. (Fig 56) Regarding claim 3, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the first layer section (110 capacitor) and the second layer section (112 hermetic seal) are arranged at least partially opposite each other such that the first layer section and the second layer section form a capacitor (Fig 48). Regarding claim 4, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the at least two first discrete capacitor elements (114’ and 114’’ lead wires) are evenly distributed around a circumference of the first opening (Fig 48 and 56). Regarding claim 5, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the second layer section (112 hermetic seal) is ring-shaped (Fig 41) and wherein the first conductor interface (120 ferrule), extends around the first opening in a circumferentially closed manner. (Fig 41 and 48) Regarding claim 6, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the base plate (comprised of 118, 112, 116, and 110) comprises a second opening (opening to accommodate 114’’ lead wire) configured to be penetrated by a second conductor from which the electromagnetic interference at least partially originates (col 2 lines 38-60, Fig 48), wherein the base plate comprises an electrically conductive third layer section (other side of 112 hermetic seal), wherein the third layer section comprises a second conductor interface (120 metal ferrule) configured to connect the third layer section to the second conductor in an electrically conductive manner (Fig 48), and wherein the first layer section and the third layer section are capacitively coupled via at least two second discrete capacitor elements (col 25 lines 13-22). Regarding claim 7, Stevenson teaches the electromagnetic filter assembly of claim 6, wherein the at least two second discrete capacitor elements (114’’’ and 114’’’’ lead wires) are evenly distributed around a circumference of the first opening (Fig 48 and 56). Regarding claim 8, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the base plate (comprised of 118, 112, 116, and 110) comprises a second opening (opening to accommodate 114 lead wire) configured to receive a second conductor from which the electromagnetic interference at least partially originates (col 2 lines 38-60, Fig 48), wherein the base plate comprises an electrically conductive third layer section (other side of 112 hermetic seal), wherein the third layer section comprises a second conductor interface (120 ferrule) configured to connect the third layer section to the second conductor in an electrically conductive manner (col 3 lines 20-25), wherein the base plate comprises an electrically conductive fourth layer section (110 capacitor), wherein the fourth layer section comprises a shielding interface configured to connect the fourth layer section to the shielding in an electrically conductive manner (col 3 lines 20-25), and wherein the third layer section and the fourth layer section are arranged at least partially opposite each other such that the third layer section and the fourth layer section form a capacitor (Fig 48) or wherein the third layer section and the fourth layer section are capacitively coupled via at least two second discrete capacitor elements (114 lead wire, Fig 56). Regarding claim 9, Stevenson teaches the electromagnetic filter assembly of claim 8, wherein the at least two second discrete capacitor elements (114’’’ and 114’’’’ lead wires) are evenly distributed around a circumference of the first opening (Fig 48 and 56). Regarding claim 10, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the shielding interface (102 and 104 internal electrodes) comprises a plurality of shielding interface sections spaced from one another (102 and 104 internal electrodes, Fig 8). Regarding claim 11, Stevenson teaches the electromagnetic filter assembly of claim 10, wherein each shielding interface section (102 and 104) at least partially extends around a respective shielding connection hole configured to receive a shielding connection bolt (Fig 8 shows 1022 and 104 extending around the opening). Regarding claim 12, Stevenson teaches the electromagnetic filter assembly of claim 1, wherein the shielding interface (102 and 104 internal electrodes) comprises at least one shielding interface section extending along an edge of the first layer section (Fig 10). Regarding claim 13, Stevenson teaches a feedthrough assembly, comprising: an electromagnetic filter assembly for attenuating electromagnetic interferences, the electromagnetic filter assembly comprising: an electromagnetic filter assembly for attenuating electromagnetic interferences, comprising: a base plate (comprised of 118, 112, 116, and 110) comprising a first opening (opening to accommodate 114 lead wire) configured to be penetrated by a first conductor (114 lead wire) from which an electromagnetic interference at least partially originates (col 2 lines 38-60), wherein the base plate comprises an electrically non-conductive carrier layer (118 insulator), an electrically conductive first layer section (110 capacitor), and an electrically conductive second layer section (112 hermetic seal), wherein the first layer section comprises a shielding interface (102 and 104 internal electrodes) configured to connect the first layer section to a shielding in an electrically conductive manner (col 3 lines 20-25), wherein the second layer section comprises a first conductor interface (120 metal ferrule) configured to connect the second layer section to the first conductor in an electrically conductive manner (col 25 lines 13-22) , and wherein the first layer section and the second layer section are capacitively coupled via at least two first discrete capacitor elements (114 lead wire, Fig 56) and a first conductor, wherein the first conductor extends through the first opening (Fig 56) and is connected to the second layer section in an electrically conductive manner via the first conductor interface (Fig 56). Regarding claim 14, Stevenson teaches an enclosure assembly for at least one electric component, comprising: an electromagnetic filter assembly for attenuating electromagnetic interferences, the electromagnetic filter assembly comprising: a base plate (comprised of 118, 112, 116, and 110) comprising a first opening (opening to accommodate 114 lead wire) configured to be penetrated by a first conductor (114 lead wire) from which an electromagnetic interference at least partially originates (col 2 lines 38-60), wherein the base plate comprises an electrically non-conductive carrier layer (118 insulator), an electrically conductive first layer section (110 capacitor), and an electrically conductive second layer section (112 hermetic seal), wherein the first layer section comprises a shielding interface (102 and 104 internal electrodes) configured to connect the first layer section to a shielding in an electrically conductive manner (col 3 lines 20-25), wherein the second layer section comprises a first conductor interface (120 metal ferrule) configured to connect the second layer section to the first conductor in an electrically conductive manner (col 25 lines 13-22) , and wherein the first layer section and the second layer section are capacitively coupled via at least two first discrete capacitor elements (114 lead wire, Fig 3); and an enclosure comprising at least one wall (200 insulative washer), wherein the wall comprises a wall opening at least partially covered by the base plate of the electromagnetic filter assembly (Fig 56), and wherein the first layer section is connected to the wall in an electrically conductive manner via the shielding interface (Fig 56 and 48). Regarding claim 15, Stevenson teaches the enclosure assembly of claim 14, further comprising: a first conductor, wherein the first conductor extends through the first opening and is connected to the second layer section in an electrically conductive manner via the first conductor interface. Regarding claim 16, Stevenson teaches the enclosure assembly of claim 14, wherein the enclosure assembly forms part of a drivetrain of a vehicle. Regarding claim 17, Stevenson teaches an enclosure assembly of claim 14, wherein the first layer section (110 capacitor) and the second layer section (112 hermetic seal) are arranged in a common plane. (Fig 56) Regarding claim 18, Stevenson teaches the enclosure assembly of claim 14, wherein the first layer section (110 capacitor) and the second layer section (112 hermetic seal) are arranged at least partially opposite each other such that the first layer section and the second layer section form a capacitor (Fig 48). Regarding claim 19, Stevenson teaches the enclosure assembly of claim 14, wherein the at least two first discrete capacitor elements (114’, 114’’, 114’’’, and 114’’’’ lead wires. Regarding claim 20, Stevenson teaches the enclosure assembly of claim 14, wherein the second layer section (112 hermetic seal) is ring-shaped (Fig 41) and wherein the first conductor interface (120 ferrule, extends around the first opening in a circumferentially closed manner. (Fig 41 and 48) Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ELISA SASSERATH whose telephone number is (703)756-5847. The examiner can normally be reached Monday - Friday 9:00am - 5:00pm. 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, Allen Parker can be reached at (303) 297-4722. 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. /E.S./Examiner, Art Unit 2841 /HUNG S. BUI/Acting Patent Examiner, 2841/2800
Read full office action

Prosecution Timeline

Sep 15, 2023
Application Filed
Jan 23, 2026
Non-Final Rejection — §102
Apr 14, 2026
Interview Requested

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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
91%
Grant Probability
99%
With Interview (+11.1%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 32 resolved cases by this examiner. Grant probability derived from career allow rate.

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