Prosecution Insights
Last updated: April 19, 2026
Application No. 18/070,089

METHOD AND APPARATUS FOR MONITORING OPERATIONAL STATE OF ELEVATOR SYSTEM

Non-Final OA §101§103
Filed
Nov 28, 2022
Examiner
CHAN, KAWING
Art Unit
2846
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Otis Elevator Company
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
85%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
559 granted / 765 resolved
+5.1% vs TC avg
Moderate +12% lift
Without
With
+12.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
24 currently pending
Career history
789
Total Applications
across all art units

Statute-Specific Performance

§101
3.3%
-36.7% vs TC avg
§103
51.0%
+11.0% vs TC avg
§102
19.0%
-21.0% vs TC avg
§112
23.3%
-16.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 765 resolved cases

Office Action

§101 §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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement (IDS) submitted on 09/08/2023 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claim 31 is rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The claim(s) does/do not fall within at least one of the four categories of patent eligible subject matter because it is drawn to a computer-readable storage medium, wherein the recording medium can be transitory, i.e., is not explicitly limited as disclosed as only being non-transitory computer readable media. A transitory recording medium can be a signal, a carrier wave, or a data structure, per se, which are non-statutory as noted, infra. A claim directed to a signal, a carrier wave, or a data structure, per se, is non-statutory because it is not: A process, or A machine, or A manufacture, or A composition of matter. Therefore, fail(s) to fall within a statutory category of invention. Applicant should note that adding "non-transitory" to the claim to limit a claimed computer readable medium to being statutory would be acceptable. 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, 8-20 and 23-31 is/are rejected under 35 U.S.C. 103 as being unpatentable over Meng (CN 108802523 A) in view of Nakamura (US 2020/0274477 A1). Regarding claims 1 and 16, discloses a method and a device for monitoring operating status of a motor (e.g. Abstract), comprising: A. acquiring a two-dimensional coordinate transformation value of a three-phase current of the three-phase motor (e.g. Abstract & [0025]: convert 3 phase output to 2 phase Park vector alpha-beta coordination); and B. displaying on the display unit (e.g. Fig. 1: 140) a trajectory generated by the two-dimensional coordinate transformation value (e.g. [0045-0046]: display fault analysis result shown in Figs. 6-11). Meng fails to disclose, but Nakamura teaches a method and a device for monitoring operating status of an elevator system (e.g. Abstract & [0088]), the elevator system comprising a three-phase motor and an inverter for driving the three-phase motor (e.g. Fig. 1: inverter 107, motor 30), the device comprising: Memory; a processor coupled with the memory; and a computer program stored on the memory and running on the processor (e.g. [0027, 0038]). Thus, it would have been obvious to one skilled in the art before the effective filing date of the claimed invention to modify the teachings of Meng (determine motor fault on a generator) with the teachings of Nakamura to determine motor fault on an elevator since it is merely applying a known technology (i.e. detect fault of a motor) in different motor application. The combination would have yielded only predictable results to one skilled in the art since it is no more than simple substitutions of one known device/method with another according to KSR. Regarding claims 13 and 28, Meng discloses a method and a device for monitoring quality of power supply of a power grid (e.g. Abstract: monitoring status of the power grid wind generator based on motor fault determination), the device comprising: a display unit (e.g. Fig. 1: 140); and A'. acquiring a two-dimensional coordinate transformation value of a three-phase voltage or current from the power grid (e.g. Abstract & [0025]: convert 3 phase output to 2 phase Park vector alpha-beta coordination); and B'. displaying on the display unit a trajectory generated by the two-dimensional coordinate transformation value (e.g. [0045-0046]: display fault analysis result shown in Figs. 6-11). Meng fails to disclose, but Nakamura teaches a method and a device for monitoring operating status of an elevator system (e.g. Abstract & [0088]), the elevator system comprising a three-phase motor and an inverter for driving the three-phase motor (e.g. Fig. 1: inverter 107, motor 30), the device comprising: Memory; a processor coupled with the memory; and a computer program stored on the memory and running on the processor (e.g. [0027, 0038]). Thus, it would have been obvious to one skilled in the art before the effective filing date of the claimed invention to modify the teachings of Meng (determine motor fault on a generator) with the teachings of Nakamura to determine motor fault on an elevator since it is merely applying a known technology (i.e. detect fault of a motor) in different motor application. The combination would have yielded only predictable results to one skilled in the art since it is no more than simple substitutions of one known device/method with another according to KSR. Regarding claims 2 and17, Meng discloses the two-dimensional coordinate transformation value is a two-phase current value obtained by performing a Clark transformation on a measured value of the three-phase current (e.g. Abstract: Park and Clark transformation are known in the art 2-phase to 3-phase conversion method). Regarding claims 3 and 18, Meng discloses the three-phase current is a measured value of the three-phase current on an input side of the three-phase motor or on an output side of the inverter (e.g. Abstract: output current/voltage). Regarding claims 4 and 19, Meng discloses the running of the computer program further causes: C. displaying a standard trajectory on the device, the standard trajectory is a trajectory when the three-phase motor operates normally (e.g. Figs. 6-7). Regarding claims 5 and 20, Meng discloses the standard trajectory is circular (e.g. Figs. 6-7). Regarding claims 8 and 23, Nakamura teaches the measured value of the three-phase current is the measured value when an elevator car moves at a uniform speed (e.g. [0042]: failure diagnosis is performed during regeneration operation when rotation speed reaches a predetermined value; thus, uniform speed when measuring). Regarding claims 9 and 24, Meng discloses the running of the computer program causes operation B to be performed in the following manner: obtaining a trajectory of the three-phase current in a phase plane by connecting temporally adjacent two-dimensional coordinate transformation values in the phase plane with straight lines or curves (e.g. Figs. 6-11: vectors are connecting in lines or curves to form the trajectory). Regarding claims 10 and 25, discloses a time span of the two-dimensional coordinate transformation value is greater than or equal to one or more periods of the three-phase current (e.g. Figs. 4-11: time span more than 1 period). Regarding claims 11 and 26, Meng discloses the generated trajectory is suitable for determining presence and type of faults of the three-phase motor and inverter (e.g. Abstract & Figs. 8-11: different faults). Regarding claims 12 and 27, Meng discloses the running of the computer program further causes: D. displaying on the display unit trajectories of the three-phase current before (e.g. Figs. 6-7: no fault) and after a phase change of the three-phase motor for distinguishing the faults of the three-phase motor and inverter (e.g. Figs. 8-11: different faults). Regarding claims 14 and 29, Meng discloses the two-dimensional coordinate transformation value is a two-phase current value or two-phase voltage value obtained by performing a Clark transformation on the three-phase current or three-phase voltage (e.g. Abstract). Regarding claims 15 and 30, Meng discloses the generated trajectory is suitable for determining quality of power supply of the power grid and the presence of faults of an inverter connected with the power grid (e.g. Abstract). Regarding claim 31, Nakamura teaches a computer-readable storage medium having instructions stored in the computer-readable storage medium, when the instructions are executed by a processor, the processor is caused to execute the method of claim 16 (e.g. [0027, 0038]). Claim(s) 6-7 and 21-22 is/are rejected under 35 U.S.C. 103 as being unpatentable over Meng (CN 108802523 A) in view of Nakamura (US 2020/0274477 A1) as applied to claims 1 and 16 above, and further in view of Brinkman (US 2019/0254136 A1). Regarding claims 6 and 21, Meng fails to disclose, but Brinkman teaches the device is one of the following: a portable computer, a tablet computer, a mobile phone and a handheld fault diagnosis instrument (e.g. Figs. 1-2 and 8: 10 & [0050, 0053, 0056, 0226, 0234]: handheld/portable diagnostic device that could be IoT and readily be retrofitted onto existing devices). Thus, it would have been obvious to one skilled in the art to implement diagnosis control module as taught by Meng and Nakamura into a handheld/portable device as taught by Brinkman so as to be used with any motor device needed easy malfunction diagnosis. Regarding claims 7 and 22, Meng, Nakamura and Brinkman in combination discloses the claimed invention. Meng and Nakamura in combination discloses receiving the two-dimensional coordinate transformation value transmitted by the inverter (see rejections of claims 1 and 16). Meng and Nakamura in combination fails to disclose, but Brinkman teaches the device further comprises a communication unit (e.g. [0043, 0063]), and using IoT (e.g. [0232]) to receive data transmitted by motor (e.g. [0050]). Thus, Meng, Nakamura and Brinkman in combination discloses the claimed invention, and it would have been obvious to one skilled in the art to implement diagnosis control module as taught by Meng and Nakamura into a handheld/portable device as taught by Brinkman so as to be used with any motor device needed easy malfunction diagnosis. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAWING CHAN whose telephone number is (571)270-3909. The examiner can normally be reached Mon-Fri 9am-5pm. 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, Eduardo Colon-Santana can be reached at 571-272-2060. 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. /KAWING CHAN/ Primary Examiner, Art Unit 2846
Read full office action

Prosecution Timeline

Nov 28, 2022
Application Filed
Jan 24, 2026
Non-Final Rejection — §101, §103 (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
73%
Grant Probability
85%
With Interview (+12.1%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 765 resolved cases by this examiner. Grant probability derived from career allow rate.

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