Prosecution Insights
Last updated: July 17, 2026
Application No. 18/529,913

SWITCHING DEVICE

Non-Final OA §103
Filed
Dec 05, 2023
Priority
Jun 08, 2021 — DE 102021114675.5 +2 more
Examiner
HOMZA, LISA NHUNG
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
TDK Corporation
OA Round
2 (Non-Final)
87%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
683 granted / 788 resolved
+18.7% vs TC avg
Minimal +1% lift
Without
With
+1.3%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
52 currently pending
Career history
811
Total Applications
across all art units

Statute-Specific Performance

§103
67.9%
+27.9% vs TC avg
§102
9.8%
-30.2% vs TC avg
§112
9.8%
-30.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 788 resolved cases

Office Action

§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 . 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 20 is rejected under 35 U.S.C. 103 as being unpatentable over Fukuda Sumihisa et al. (the IDS - JP 2014157830). Regarding claim 20, Fukuda discloses: at least one fixed contact (33), a contact bridge (35, 832) and an upper yoke element (63) in a switching chamber (3), wherein the upper yoke element (63) is attached to a switching chamber wall (61) of the switching chamber (3), wherein the upper yoke element (63) is held to an inside of the switching chamber (3) by a fastening part made of a plastic material. Although Fukuda does not explicitly disclose the fastening part made of a plastic material, it would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention to make the plastic fastening part for the purpose of reducing cost and resisting the corrosion from moisture or chemicals. Since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Fukuda teaches the claimed subject as disclosed above, however, fails to explicitly disclose the switching chamber wall (61) comprises a ceramic material. Fukuda discloses the container 73 is made of a heat-resistant material such as a ceramic material (para. [0005]). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention to have use the ceramic material as taught by Fukuda to make the switching chamber wall for the purpose of resisting heat. Since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Response to Arguments Applicant's arguments filed on 2/23/26 have been fully considered but they are not persuasive. In the REMARKS: Applicant argued that: “Fukuda does not teach or suggest that "the upper yoke element is held to an inside of the switching chamber by a fastening part made of a plastic material." This argument is not found to be persuasive, because although Fukuda does not explicitly disclose the fastening part made of a plastic material, it would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention to make the plastic fastening part for the purpose of reducing cost and resisting the corrosion from moisture or chemicals. Since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. Allowable Subject Matter Claims 1-9, 16, 18, 19 and 21 are allowed. The following is an examiner’s statement of reasons for allowance: The prior art does not teach or suggest the switching device comprising Claim 1: the retaining member comprises at least one clip member, which comprises the at least one guide element and the at least one stop and which at least partially embraces the contact bridge, including along with the remaining limitations of claim 1. Claim 21: the retaining member comprises at least one clip member, which comprises the at least one guide element and the at least one stop and which at least partially embraces the contact bridge, including along with the remaining limitations of claim 21. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion THIS ACTION IS MADE FINAL. 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 should be directed to Lisa Homza whose telephone number is (571) 272-3592. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Shawki Ismail can be reached on (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 an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Lisa Nhung Homza/ Patent Examiner - Art Unit 2837 May 11, 2026 /SHAWKI S ISMAIL/Supervisory Patent Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Dec 05, 2023
Application Filed
Jan 27, 2026
Non-Final Rejection mailed — §103
Feb 23, 2026
Response Filed
May 13, 2026
Final Rejection mailed — §103
Jun 16, 2026
Response after Non-Final Action

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
87%
Grant Probability
88%
With Interview (+1.3%)
2y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 788 resolved cases by this examiner. Grant probability derived from career allowance rate.

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