Prosecution Insights
Last updated: April 19, 2026
Application No. 18/674,287

SWITCHING DEVICE FOR DELAYED UNLOCKING FUNCTION

Non-Final OA §102§103§112
Filed
May 24, 2024
Examiner
NEUBAUER, THOMAS L
Art Unit
3675
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Shanghai Ming Wei Hardware Co. Ltd.
OA Round
2 (Non-Final)
66%
Grant Probability
Favorable
2-3
OA Rounds
3y 6m
To Grant
86%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allow Rate
326 granted / 493 resolved
+14.1% vs TC avg
Strong +20% interview lift
Without
With
+19.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
40 currently pending
Career history
533
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
41.9%
+1.9% vs TC avg
§102
28.7%
-11.3% vs TC avg
§112
26.0%
-14.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 493 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office 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 the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 1 (and claims 2-9 by dependency) are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Regarding claim 1, a flat-push type emergency door lock is undefined as to what is required to satisfy “type”. As written, one of ordinary skill in the art would be unable to determine what is required by the applicant. Review of the specification shows no clarification or definition of the recitation as written in the claim. Claims are interpreted broadly until otherwise clarified in light of the identified specification discrepancy. 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. Claim(s) 1-3, 7 and 8 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lin (US 2021/0381278). Regarding claim 1, Lin discloses a switching device for delayed unlocking function, disposed at a flat-push type emergency door-lock device, the flat-push type emergency door-lock device being disposed at an emergency door board, the flat-push type emergency door-lock device including a door-lock base (annotated Fig.2) and a flat-push rod (22) disposed at the door-lock base, the switching device for delayed unlocking function comprising: a switching-device base (21 parallel portion to annotated door lock base), fixed on the door-lock base; a mobile assembly (2b), movably disposed at the switching-device base, including a stopper (23), wherein when the mobile assembly is driven, the stopper is moved between a stop position (Fig.5B) and an avoidance position (Fig. 5C), wherein the stopper is switchably (moveable) at the avoidance position in a delayed unlocking function disabled state and is preset at the stop position in a delayed unlocking function enabled state; a linkage rod (24), pivoted to the door-lock base (about 241), connected to the flat-push rod in a coherent manner; a sensing assembly (including sensor/switch 27), fixed on the switching-device base, sending an unlocking-triggering signal in the delayed unlocking function enabled state when sensing that the flat-push rod is pushed and starts to move along a push-down driving stroke; a timing control assembly ([0043]), electrically connected to the sensing assembly, thereby sending a state-switching signal after the unlocking-triggering signal is received and a predetermined delay time is passed; and an electromagnetic traction assembly ([0042]), disposed at the switching-device base, dragging the mobile assembly to move the stopper from the stop position to the avoidance position after receiving the state-switching signal; wherein when the stopper is at the stop position (Fig.5b), the linkage rod is blocked to prevent the flat-push rod from continuing to move along the push-down driving stroke and prohibit unlocking; wherein when the stopper is at the avoidance position, the linkage rod is avoided to allow the flat-push rod to continue to move along the push-down driving stroke to complete unlocking. PNG media_image1.png 608 862 media_image1.png Greyscale Annotated Figure taken from Lin (US 2021/0381278) Regarding claim 2, Lin discloses the switching device for delayed unlocking function of claim 1, wherein the mobile assembly further includes: a mobile frame (28) of assembly, including a mobile frame body and the stopper (23) fixed on the mobile frame body; and a fixing pin (pin or rod extending from 25) , plugged and fixed on the mobile frame body and the electromagnetic traction assembly, thereby the stopper is dragged in conjunction when the electromagnetic traction assembly drags the mobile frame body. Regarding claim 3, Lin discloses the switching device for delayed unlocking function of claim 2, wherein the switching-device base includes: a base (20), fixed on the door-lock base; and a protection cover (sides of 21 perpendicular to switching device base), fixed on the base, including at least one stroke limiting groove (between 210) to limit the movement of the mobile frame, thereby the stopper is limited to move between the stop position and the avoidance position. Regarding claim 7, Lin discloses the switching device for delayed unlocking function of claim 1, wherein the timing control assembly includes: a circuit board (26), disposed at the door-lock base; a controller (2b, electric control assembly), disposed at the circuit board, electrically connected to the sensing assembly, used to generate a timing signal after receiving the unlocking-triggering signal in the delayed unlocking function enabled state; and a timer ([0015]), electrically connected to the controller, used to start timing after receiving the timing signal in the delayed unlocking function enabled state, used to send a timing-off signal after the timing reaches the predetermined delay time, thereby causing the controller to send the state-switching signal. Regarding claim 8, Lin discloses the switching device for delayed unlocking function of claim 7, further including a buzzer (alarm [0056]), the buzzer electrically connected to the controller, the controller further generating an alarm signal after receiving the unlocking-triggering signal(alarm [0056]) in the delayed unlocking function enabled state, the controller transmitting the alarm signal to the buzzer to cause the buzzer to issue an alarm. 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 4-6 are rejected under 35 U.S.C. 103(a) as being unpatentable over Lin (US 2021/03812787) in view of Szerszen (10,669,740). Regarding claim 4, Lin discloses the switching device for delayed unlocking function of claim 1, further including: a delayed unlocking function switching lock (abstract), disposed at the door-lock base, driven to move between a function-enabled position and a function-disabled position; and an on/off position-detecting module (51), disposed at the door-lock base, electrically connected to the timing control assembly, thereby when sensing the delayed unlocking function switching lock is at the function-enabled position, a function-on signal ([009]-[0010]) is sent to the timing control assembly, so that the timing control assembly enters the delayed unlocking function enabled state; thereby when sensing the delayed unlocking function switching lock is at the function-disabled position, a function-off signa([009]-[0010]) l is sent to the timing control assembly, so that the timing control assembly enters the delayed unlocking function disabled state. Lin does not disclose: a key. Szerszen teaches a key for the purpose of the expected benefit of activating or deactivating a device as is old and known in latching a door. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify Lin with a key as taught by Szerszen for the expected benefit of activating or deactivating a device as is old and known in latching a door. Regarding claim 5, Lin as modified by Szerszen shows the switching device for delayed unlocking function of claim 4, wherein the on/off position-detecting module further includes a first micro-switch sensor (27), wherein when the delayed unlocking function switching lock is at the function-enabled position, the first micro-switch sensor contacts with the delayed unlocking function switching lock to generate and send the function-on signal ([009]-[0010]) accordingly, wherein when the delayed unlocking function switching lock is at the function-disabled position, the first micro-switch sensor is separated from the delayed unlocking function switching lock to generate and send the function-off signal accordingly. Regarding claim 6, Lin as modified by Szerszen shows the switching device for delayed unlocking function of claim 5, further including a lever (3), the lever being disposed at the door-lock base and being driven by the delayed unlocking function switching lock, wherein when the delayed unlocking function switching lock is at the function-enabled position, the lever contacts with the first micro-switch sensor so that the first micro-switch sensor detects that the delayed unlocking function switching lock is at the function-enabled position. Claim 9 is/are rejected under 35 U.S.C. 103(a) as being unpatentable over Lin (US 2021/03812787). Regarding claim 9, Lin discloses the switching device for delayed unlocking function of claim 1, wherein the sensing assembly includes a second micro-switch sensor, the second micro-switch sensor being disposed at the switching-device base and contacting with the flat-push rod, wherein when the flat-push rod is pushed in the delayed unlocking function enabled state so that the second micro-switch sensor contacts with the flat-push rod and sends the unlocking-triggering signal. Lin discloses the claimed invention except for a second micro switch sensor. It would have been obvious to one having ordinary skill in the art at the time the invention was made to specify a second microswitch sensor, since mere duplication of the essential working parts of a device involves only routine skill in the art. Response to Arguments Applicant’s arguments from the response filed on 24 May 2024 have been fully considered and will be addressed below in the order in which they appeared. All positively recited structure in claim 1 of the instant application is present in the prior art of Lin (US 2021/03812787). In the previous office action some of the structure identified appeared inaccurately labeled. For that reason clarifications are made and the office action is made as a Non-final. Applicant has failed to provide positive recitation which would distinguish the instant application over the prior art of reference. The applicant’s arguments are unpersuasive. Applicant argues “switchable” but fails to recite a “switch”. Recitation is taken broadly any element that is moveable will be considered switchably meeting the current recitation. Applicant’s argument, page 1; a mechanical mechanism does not change position instantaneously. In any physical system there is a delay between initial action and subsequent mechanism movement. Absent positive recitation of structure that would enable a function that the prior art cannot achieve it is reasonable that the interpretation of the prior art discloses the applicant’s invention as currently claimed. Applicant’s argument, page 1; regarding connection in “a coherent manner”, any assembly of individual components is connected in some way. Where the applicant fails to articulate a positive structural recitation as to what is required, the interpretation is broadly applied. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure as it may affect the patentability of applicant’s claimed invention is listed on the attached PTO-892. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Thomas L. Neubauer whose telephone number is 571.272.4864. The examiner can normally be reached on Monday - Friday, 8:00 AM through 5:00 PM EST. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Kristina R. Fulton can be reached on 571.272.7376. 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. /T. L. N./ Examiner, Art Unit 3675 /KRISTINA R FULTON/Supervisory Patent Examiner, Art Unit 3675
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Prosecution Timeline

May 24, 2024
Application Filed
Aug 15, 2025
Non-Final Rejection — §102, §103, §112
Nov 04, 2025
Response Filed
Feb 11, 2026
Non-Final Rejection — §102, §103, §112
Apr 06, 2026
Examiner Interview Summary
Apr 06, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601202
LOCK WITH OVERRIDE MECHANISM
2y 5m to grant Granted Apr 14, 2026
Patent 12595690
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Patent 12584332
DISPENSER LATCHING SYSTEM
2y 5m to grant Granted Mar 24, 2026
Patent 12577806
NARROW-TYPE DOOR-LOCK DRIVING DEVICE
2y 5m to grant Granted Mar 17, 2026
Patent 12565793
BATHROOM LOCK STRUCTURE
2y 5m to grant Granted Mar 03, 2026
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
66%
Grant Probability
86%
With Interview (+19.7%)
3y 6m
Median Time to Grant
Moderate
PTA Risk
Based on 493 resolved cases by this examiner. Grant probability derived from career allow rate.

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