Prosecution Insights
Last updated: April 19, 2026
Application No. 18/400,154

PORTABLE LEAKAGE PROTECTION PLUG

Non-Final OA §103
Filed
Dec 29, 2023
Examiner
NGUYEN, TRUC T
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Dongguan City Tuocheng Industries Co. Ltd.
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
2y 0m
To Grant
94%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allow Rate
1112 granted / 1274 resolved
+19.3% vs TC avg
Moderate +7% lift
Without
With
+7.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
40 currently pending
Career history
1314
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
33.7%
-6.3% vs TC avg
§102
39.8%
-0.2% vs TC avg
§112
21.7%
-18.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1274 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. Claims 1-3 are rejected under 35 U.S.C. 103 as being unpatentable over Zou (CN 201425994). Regarding claim 1, Zou discloses a portable leakage protection plug, comprising a housing (1), an output electric wire (not shown) and plug pins (2, 4), wherein a control circuit board (5), a tripping assembly (7), an inductor (62), a wiring base (not shown) and a switch (12) are provided inside the housing; the switch is mounted at an upper side of the control circuit board and is located outside the housing; the control circuit board is located at an upper side inside the housing; a static contact (723) and a movable contact (742) are fixedly connected on the control circuit board, the movable contact is an elastic structure, the static contact is in communication with the plug pin by a conductor wire (not shown), the movable contact is in communication with the wiring base by an induction wire (not shown) in a way of bypassing the inductor, and the tripping assembly is used for connecting and disconnecting the static contact and the movable contact. Zou substantially disclosed the claimed invention except the arrangement of the tripping assembly and the inductor are located at left and right sides of the middle part of the housing; and the plug pin and the wiring base are located at left and right sides of a bottom end inside the housing. It would have been obvious to one having ordinary skill in the art at the time the invention was made to rearrange the parts to a desired locations for saving space, since it has been held that rearranging parts of an invention involves only routine skill in the art. In re Japikse, 86 USPQ 70. Although Zou does not specifically show the “output electric wire”, “wire base”, “conductor wire” and “induction wire” in the plug assembly. However, these features are seen to be an inherent teaching since other related components were disclosed. Therefore, the claimed feature must be presented in the assembly to be functioned as intended. Regarding claim 2, in the modified leakage protection, Zou discloses the housing (1) comprises an upper cover (13), a lower cover (14) and a movable cover (103); and the lower cover and the movable cover are both fixedly connected to the upper cover by screws. [AltContent: textbox (screws)][AltContent: textbox (Movable cover)][AltContent: arrow][AltContent: arrow] PNG media_image1.png 373 701 media_image1.png Greyscale Regarding claim 3, in the modified portable leakage protection plug, Zou does not specifically show the first and second coils in the inductor assembly. However, these features are seen to be an inherent teaching since the inductor was disclosed. Therefore, the first and second coils must be presented in the inductor assembly to be functioned as intended. Allowable Subject Matter Claims 4-7 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TRUC T NGUYEN whose telephone number is (571)272-2011. The examiner can normally be reached monday-friday (7-4). 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, Christopher M. Koehler can be reached at 5712723560. 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. /TRUC T NGUYEN/Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Dec 29, 2023
Application Filed
Feb 04, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12592523
ELECTRICAL CONNECTOR WITH IMPROVED GROUND SHIELDING EFFECT
2y 5m to grant Granted Mar 31, 2026
Patent 12586952
CONNECTING ASSEMBLY AND RELATED ELECTRONIC APPARATUS
2y 5m to grant Granted Mar 24, 2026
Patent 12580351
CABLE CAP WITH POWER INDICATOR
2y 5m to grant Granted Mar 17, 2026
Patent 12580342
CONNECTOR ASSEMBLY
2y 5m to grant Granted Mar 17, 2026
Patent 12580338
CONNECTOR AND MANUFACTURING METHOD THEREOF
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
87%
Grant Probability
94%
With Interview (+7.2%)
2y 0m
Median Time to Grant
Low
PTA Risk
Based on 1274 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month