Prosecution Insights
Last updated: April 19, 2026
Application No. 18/644,134

Glass Walls and Doors Detection and Distance Measuring for Robots and Method of Controlling the Same

Non-Final OA §103
Filed
Apr 24, 2024
Examiner
SONG, HOON K
Art Unit
2884
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Prox Sg Pte. Ltd.
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
94%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
1294 granted / 1505 resolved
+18.0% vs TC avg
Moderate +8% lift
Without
With
+8.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
36 currently pending
Career history
1541
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
39.1%
-0.9% vs TC avg
§102
39.9%
-0.1% vs TC avg
§112
13.2%
-26.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1505 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(s) 1-4, 6-7 and 9-10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Xu (US 20230083293) in view of Holt et al. (US 20140016113). Regarding claim 1, Xu teaches a method for detecting glass wall with reflective surface for an autonomous system (para 58), the method comprising: deploying at least one IR imaging device 114 and at least one IR emitter on the autonomous system, wherein the IR imaging device comprises a field-of-view (FOV) (para 69); determining a distance and angle of the autonomous system from the reflective surface based on the reflected IR thermal signature within the FOV, whereby the reflective surface will be identify as the glass wall 302 (para 94). However Xu fails to teach emitting, by an IR thermal emitter, an IR thermal signature from the autonomous system, wherein the IR thermal signature is located outside of the FOV; detecting presence of the IR thermal signature that reflects on the reflective surface. Holt teaches emitting, by an IR thermal emitter, an IR thermal signature from the autonomous system, wherein the IR thermal signature is located outside of the FOV; detecting presence of the IR thermal signature that reflects on the reflective surface (para 26). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to adapt the emitting of Xu with the emitting as taught by Holt, since it would better glass surface reflectivity. Regarding claim 2, Holt teaches resistors arranged to emits the thermal signature (para 26). Regarding claim 3, Holt teaches a resistor array arranged to form the thermal signature (para 26). Regarding claim 4, Holt teaches the autonomous system determines the distance and angle based on triangulation method (para 28). Regarding claim 6, Xu teaches a sensor assembly of an autonomous system adapted for detecting glass wall, the sensor assembly comprising: at least one infrared (IR) thermal sensor having a Field-of-View (FOV) (para 69); the sensor assembly determines a distance and angle of the IR sensor from the reflective surface and the reflective surface is identified as a glass wall (para 94). However Xu fails to teach at least one IR emitter that operationally emits a thermal signature; whereby operationally, when IR thermal signature is reflected on a reflected surface and the reflected IR thermal signature is captured within the FOV. Holt teaches at least one IR emitter that operationally emits a thermal signature; whereby operationally, when IR thermal signature is reflected on a reflected surface and the reflected IR thermal signature is captured within the FOV (para 26). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to adapt the emitting of Xu with the emitting as taught by Holt, since it would better glass surface reflectivity. Regarding claim 7, Holt teaches each of the IR emitter comprises a resistor array, each resistor unit of the resistor array form a pixel of the thermal signature (para 26). Regarding claim 9, Xu teaches the distance and angle are determined through triangulation (para 28). Regarding claim 10, Xu teaches an autonomous system having a sensor assembly in accordance with Claim 6 (para 3). Claim(s) 5 and 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Xu as modified by Holt further in view of Man (US 20210270677). Regarding claims 5 and 8, Xu fails to teach the IR thermal emitter emits the thermal signature within a long-wavelength IR band. Man teaches an IR thermal emitter emits the thermal signature within a long-wavelength IR band (para 46). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to adapt the IR emitter of Xu with the IR emitter as taught by Man, since it would better depth measurement. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HOON K SONG whose telephone number is (571)272-2494. The examiner can normally be reached M to Th 10am to 7pm. 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, David Makiya can be reached at 571-272-2273. 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. /HOON K SONG/Primary Examiner, Art Unit 2884
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Prosecution Timeline

Apr 24, 2024
Application Filed
Feb 07, 2026
Non-Final Rejection — §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
86%
Grant Probability
94%
With Interview (+8.5%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 1505 resolved cases by this examiner. Grant probability derived from career allow rate.

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