Prosecution Insights
Last updated: April 19, 2026
Application No. 18/476,330

WOUND CAPACITOR PACKAGE STRUCTURE AND SEALING ELEMENT THEREOF

Non-Final OA §103§112
Filed
Sep 28, 2023
Examiner
RAMASWAMY, ARUN
Art Unit
2848
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Apaq Technology Co. Ltd.
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
97%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allow Rate
660 granted / 784 resolved
+16.2% vs TC avg
Moderate +13% lift
Without
With
+12.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
37 currently pending
Career history
821
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
54.9%
+14.9% vs TC avg
§102
30.5%
-9.5% vs TC avg
§112
9.0%
-31.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 784 resolved cases

Office Action

§103 §112
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 § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 2 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. It is unclear if the oleophobic structural layer surrounds the elastomeric seal completely or partially. For example lines 10-15 of claim 2 describe an oleophobic structure that covers the upper surface, and therefore, all surfaces of the elastomeric seal. However, lines 22-26 describe an oleophobic structure that covers the upper surface, and therefore, only partially covers the elastomeric seal structure. The claim will be examined as best understood. Claim 3 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. It is unclear if the oleophobic structural layer surrounds the elastomeric seal completely or partially. For example lines 10-15 of claim 3 describe an oleophobic structure that covers the upper surface, and therefore, all surfaces of the elastomeric seal. However, lines 16-21 describe an oleophobic structure that covers the upper surface, and therefore, only partially covers the elastomeric seal structure. The claim will be examined as best understood. Claim 6 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. It is unclear if the oleophobic structural layer surrounds the elastomeric seal completely or partially. For example lines 10-15 of claim 2 describe an oleophobic structure that covers the upper surface, and therefore, all surfaces of the elastomeric seal. However, lines 22-26 describe an oleophobic structure that covers the upper surface, and therefore, only partially covers the elastomeric seal structure. The claim will be examined as best understood. Claim 7 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. It is unclear if the oleophobic structural layer surrounds the elastomeric seal completely or partially. For example lines 10-15 of claim 3 describe an oleophobic structure that covers the upper surface, and therefore, all surfaces of the elastomeric seal. However, lines 16-21 describe an oleophobic structure that covers the upper surface, and therefore, only partially covers the elastomeric seal structure. The claim will be examined as best understood. Claim 10 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. It is unclear if the oleophobic structural layer surrounds the elastomeric seal completely or partially. For example lines 10-15 of claim 2 describe an oleophobic structure that covers the upper surface, and therefore, all surfaces of the elastomeric seal. However, lines 22-26 describe an oleophobic structure that covers the upper surface, and therefore, only partially covers the elastomeric seal structure. The claim will be examined as best understood. 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 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) 1, 5, and 9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Takashi et al. (WO2021049190A1) in view of Shinichi et al. (JP2008078534A). In re claim 1, Takashi discloses a wound capacitor package structure, comprising: a wound assembly (3 – Figure 4, ¶30) including a wound positive conductive foil (5 – Figure 4, ¶30), a wound negative conductive foil (7 – Figure 4, ¶30) and two wound insulating separators (6 – Figure 4, ¶30); a conductive assembly including a first conductive pin (8 – Figure 4, ¶31) electrically contacting the wound positive conductive foil (5 – Figure 4) and a second conductive pin (9 – Figure 4, ¶31) electrically contacting the wound negative conductive foil (7 – Figure 4); a package casing (2 – Figure 3, ¶29) configured to receive the wound assembly (Figure 3, Figure 4); and a sealing element (4 – Figure 3, ¶39) disposed inside the package casing (2 – Figure 3) and cooperating with the package casing (Figure 3), wherein the sealing element is configured to prevent the wound assembly from contacting an external environment (See Figure 3); wherein one of the two wound insulating separators (6 – Figure 4) is disposed between the wound positive conductive foil (5 – Figure 4) and the wound negative conductive foil (7 – Figure 4), and one of the wound positive conductive foil and the wound negative conductive foil (5 – Figure 4) is disposed between the two wound insulating separators (6 – Figure 4); wherein the first conductive pin (8 – Figure 3) includes a first embedded portion (8 within 11 – Figure 4, ¶99) accommodated inside the package casing (2 – Figure 3) and enclosed by the sealing element (4 – Figure 3), and a first exposed portion (8 outside of 4 – Figure 3) exposed outside the package casing (2 – Figure 3), and the second conductive pin (9 – Figure 3) includes a second embedded portion (9 within 11 – Figure 3) accommodated inside the package casing (2 – Figure 3) and enclosed by the sealing element (4 – Figure 3), and a second exposed portion (9 outside of 4 – Figure 3) exposed outside the package casing (2 – Figure 3); wherein the package casing has a surrounding concave position-limiting portion (13 – Figure 3, ¶45) recessed inward to press the sealing element (4 – Figure 3), and a surrounding convex end portion (portion of 2 surrounding 13 – Figure 3) protruding from the surrounding concave position-limiting portion to abut against the sealing element (4 – Figure 3); wherein the sealing element (4 – Figure 3) includes an elastomeric seal structure pressed by the surrounding concave position-limiting portion (¶45), and an oleophobic structure (¶42) for protecting the elastomeric seal structure (Figure 3). Takashi does not disclose the oleophobic structure of the sealing element is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid. Shinichi discloses the sealing element (5 – Figure 3, ¶17) is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid (8 – Figure 3, ¶22-23; Note that the Examiner is not considering the invocation of U.S.C. 112(f) because significant structure has been introduced.). It would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to incorporate the oil reservoir of Shinichi to suppress degradation of the electronic component (¶20 – Shinichi). In re claim 5, Takashi discloses a wound capacitor package structure, comprising: a wound assembly (3 – Figure 4, ¶30); a conductive assembly including a first conductive pin (8 – Figure 4, ¶31) and a second conductive pin (9 – Figure 4, ¶31); a package casing (2 – Figure 3, ¶29) configured to receive the wound assembly (Figure 3, Figure 4); and a sealing element (4 – Figure 3, ¶39) disposed inside the package casing (2 – Figure 3) and cooperating with the package casing (Figure 3), wherein the sealing element is configured to prevent the wound assembly from contacting an external environment (See Figure 3); wherein the package casing has a surrounding concave position-limiting portion (13 – Figure 3, ¶45) recessed inward to press the sealing element (4 – Figure 3), and a surrounding convex end portion (portion of 2 surrounding 13 – Figure 3) protruding from the surrounding concave position-limiting portion to abut against the sealing element (4 – Figure 3); wherein the sealing element (4 – Figure 3) includes an elastomeric seal structure pressed by the surrounding concave position-limiting portion (¶45), and an oleophobic structure (¶42) for protecting the elastomeric seal structure (Figure 3). Takashi does not disclose the oleophobic structure of the sealing element is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid. Shinichi discloses the sealing element (5 – Figure 3, ¶17) is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid (8 – Figure 3, ¶22-23; Note that the Examiner is not considering the invocation of U.S.C. 112(f) because significant structure has been introduced.). It would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to incorporate the oil reservoir of Shinichi to suppress degradation of the electronic component (¶20 – Shinichi). In re claim 9, Takashi discloses a sealing element (4 – Figure 3) applied to a wound capacitor package structure (1 – Figure 3, ¶57) including: a wound assembly (3 – Figure 4, ¶30), a conductive assembly (8, 9 – Figure 3, Figure 4) and a package casing (2 – Figure 3, ¶29); and wherein the sealing element (4 – Figure 3, ¶39) is disposed inside the package casing (2 – Figure 3) and cooperating with the package casing (Figure 3), and the sealing element is configured to prevent the wound assembly from contacting an external environment (See Figure 3); wherein the package casing has a surrounding concave position-limiting portion (13 – Figure 3, ¶45) recessed inward to press the sealing element (4 – Figure 3), and a surrounding convex end portion (portion of 2 surrounding 13 – Figure 3) protruding from the surrounding concave position-limiting portion to abut against the sealing element (4 – Figure 3); wherein the sealing element (4 – Figure 3) includes an elastomeric seal structure pressed by the surrounding concave position-limiting portion (¶45), and an oleophobic structure (¶42) for protecting the elastomeric seal structure (Figure 3). Takashi does not disclose the oleophobic structure of the sealing element is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid. Shinichi discloses the sealing element (5 – Figure 3, ¶17) is configured to reduce the corrosiveness of the elastomeric seal structure by an oil-containing cooling liquid (8 – Figure 3, ¶22-23; Note that the Examiner is not considering the invocation of U.S.C. 112(f) because significant structure has been introduced.). It would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to incorporate the oil reservoir of Shinichi to suppress degradation of the electronic component (¶20 – Shinichi). Allowable Subject Matter Claims 4 and 8 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The prior art does not teach nor suggest (in combination with other claim limitations) the oleophobic structure includes a plurality of oleophobic fillers each containing a predetermined oil-resistant material, and the oleophobic fillers are mixed into the elastomeric seal structure so as to form the sealing element having an oleophobic function. The predetermined oil-resistant material includes polyurethane rubber, acrylate rubber, fluoro rubber or nitrile rubber, the fluoro rubber is chlorohydrin rubber, fluorosilicone rubber or fluoro-phosphazene rubber, and the nitrile rubber is hydrogenated nitrile rubber. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Chen et al. (US Publication 2018/0166221) Figure 1 Any inquiry concerning this communication or earlier communications from the examiner should be directed to ARUN RAMASWAMY whose telephone number is (571)270-1962. The examiner can normally be reached Monday - Friday, 9:00 am - 5:00 pm. 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, Timothy Dole can be reached at (571) 272-2229. 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. /ARUN RAMASWAMY/ Primary Examiner, Art Unit 2848
Read full office action

Prosecution Timeline

Sep 28, 2023
Application Filed
Feb 07, 2026
Non-Final Rejection — §103, §112 (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

1-2
Expected OA Rounds
84%
Grant Probability
97%
With Interview (+12.8%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 784 resolved cases by this examiner. Grant probability derived from career allow rate.

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