Prosecution Insights
Last updated: April 19, 2026
Application No. 18/441,671

SECONDARY ARCING CONTACT FOR AN ELECTRICAL SWITCH

Non-Final OA §102§103
Filed
Feb 14, 2024
Examiner
CAROC, LHEIREN MAE ANGLO
Art Unit
2831
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Eaton Intelligent Power Limited
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
91%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
769 granted / 990 resolved
+9.7% vs TC avg
Moderate +14% lift
Without
With
+13.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
33 currently pending
Career history
1023
Total Applications
across all art units

Statute-Specific Performance

§103
40.8%
+0.8% vs TC avg
§102
42.2%
+2.2% vs TC avg
§112
13.2%
-26.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 990 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 . 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 12-14 and 16 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hammer et al. [Hammer hereinafter, US 20230045643]. In regard to claim 12, Hammer discloses [in Figs. 1-3] an apparatus comprising: a movable electrical contact assembly [12] configured to move relative to a stationary electrical contact [14]; an arcing contact [18] attached to the movable electrical contact assembly [12]; a secondary arcing contact [17] electrically connected to the movable electrical contact assembly [12]; and an elastic connection [46] attached to the movable electrical contact assembly [12] and the secondary arcing contact [17]. In regard to claims 13 and 14, Hammer discloses [in Figs. 1-3] the apparatus of claim 12, wherein that the secondary arcing contact [17] is electrically connected to the movable electrical contact assembly [12] through an electrically conductive element [16], wherein the electrically conductive element [16] is flexible. In regard to claim 16, Hammer discloses [in Figs. 1-3] the apparatus of claim 12, wherein the secondary arcing contact [17] and the arcing contact [18] comprise a first electrically conductive material, and the movable electrical contact assembly comprises a second electrically conductive material that has a higher electrical conductivity than the first electrically conductive material. 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 17 is rejected under 35 U.S.C. 103 as being unpatentable over Hammer et al. [Hammer hereinafter, US 20230045643] in view of Maier [US 4,713,504]. Hammer discloses [in Figs. 1-6] a system comprising: a stationary electrical contact [14]; a movable electrical contact assembly [12] configured to move relative to the stationary electrical contact [14]; a first arcing contact [18] on the movable electrical contact assembly [12]; an electrical element [16] electrically connected to the movable electrical contact assembly [12]; an elastic connection [46] attached to the movable electrical contact assembly [12]; and a secondary arcing contact [17] connected to the electrical element [16] and the elastic connection [46]. Hammer does not disclose a second arcing contact on the stationary electrical contact. Maier teaches [in Fig. 3] a second arcing contact [34] on the stationary electrical contact [31]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to combine the second arcing contact of Maier with the apparatus of Hammer in order to further reduce deterioration of the contacts. Allowable Subject Matter Claims 1-11 are allowed. In regard to claim 1, in combination with other limitations, a second arcing contact on the first stationary electrical contact, wherein the secondary arcing contact is connected to the second arcing contact when the switch is closed and remains connected to the second arcing contact during at least part of an opening operation of the switch is neither disclosed nor suggested by the prior art. Claim 15 is 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. In combination with other limitations, the movable electrical contact assembly comprises a first contact portion and a second contact portion, and the secondary arcing contact being between the first contact portion and the second contact portion is neither disclosed nor suggested by the prior art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LHEIREN MAE A CAROC whose telephone number is (571)272-2730. 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, Renee Luebke can be reached at 571-272-2009. 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. /LHEIREN MAE A CAROC/Primary Examiner, Art Unit 2833
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Prosecution Timeline

Feb 14, 2024
Application Filed
Jan 10, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603237
PUSH BUTTON FOR ACTUATING SWITCH
2y 5m to grant Granted Apr 14, 2026
Patent 12597571
BUTTON APPARATUS AND ELECTRONIC EQUIPMENT
2y 5m to grant Granted Apr 07, 2026
Patent 12592351
PYROTECHNIC CIRCUIT BREAKER
2y 5m to grant Granted Mar 31, 2026
Patent 12586740
STACK KEY STRUCTURE AND BALANCE-SHAFT SEAT THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12578802
ELECTRICAL KEY SUPPORT MEMBRANE
2y 5m to grant Granted Mar 17, 2026
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
78%
Grant Probability
91%
With Interview (+13.7%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 990 resolved cases by this examiner. Grant probability derived from career allow rate.

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