Prosecution Insights
Last updated: July 17, 2026
Application No. 18/602,904

Two-Stage Suppression for Multi-Class, Multi-Object Detection and Tracking Systems

Non-Final OA §102
Filed
Mar 12, 2024
Priority
Sep 15, 2023 — provisional 63/582,868
Examiner
DESIRE, GREGORY M
Art Unit
2676
Tech Center
2600 — Communications
Assignee
Microsoft Technology Licensing, LLC
OA Round
1 (Non-Final)
91%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 91% — above average
91%
Career Allowance Rate
993 granted / 1095 resolved
+28.7% vs TC avg
Moderate +6% lift
Without
With
+5.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
21 currently pending
Career history
1107
Total Applications
across all art units

Statute-Specific Performance

§101
14.0%
-26.0% vs TC avg
§103
39.6%
-0.4% vs TC avg
§102
30.3%
-9.7% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1095 resolved cases

Office Action

§102
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 . 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. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-20 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Lin et al (12,430,919). Regarding claims 1, 8 and 15 Lin discloses, Receive an image depicting multiple objects belonging to different classes (note col. 7 lines 21-24, cites machine learning recognize object for classification); Generate preliminary bounding boxes for the multiple objects, wherein each of the preliminary bounding boxes comprises a size, a location, a class, and a confidence score (note col. 3 lines 13-30); Select a first subset of bounding boxes by performing a per-class suppression of the preliminary bounding boxes (note col. 3 lines 13-30; Select a second subset of bounding boxes by performing a class-agnostic suppression of the first subset of bounding boxes (note col. 3 lines 13-30); and Based on the second subset of bounding boxes, generate at least one of an enriched image or a video index (note col. 3 lines 13-30). Regarding claims 2 and 16 Lin discloses, Wherein performing the per-class suppression comprises: grouping the preliminary bounding boxes by class (note col. 3 lines 32- col. 4 lines 9, bounding box similarity determined); and separately performing Non-Maximum Suppression (NMS) on each of the groups of preliminary bounding boxes (note col. 4 lines 33-43, bounding box suppressed if it is determined that the newly-detected bounding box is sufficiently similar to a region of merged bounding boxes) Regarding claim 3 Lin disclose Wherein performing the class-agnostic suppression comprises performing NMS on the first subset of bounding boxes without regard to class (note col. 10 lines 30-35, suppression of bounding boxes). Regarding claims 4, 12 and 20 Lin discloses Wherein: the per-class suppression utilizes a per-class intersection-over-union (IoU) threshold (note col. 3 lines 17-26 and col. 10 lines 25-34, suppression utilizes filter); the class-agnostic suppression utilizes a class-agnostic IoU threshold (note col. 10 lines 25-34, suppression utilizes filter); and the class-agnostic IoU threshold is greater than the per-class IoU threshold (note col. 10 lines 25-34, suppression utilizes filter); Regarding claim 5 Lin discloses Wherein the class-agnostic IoU threshold is at least twice the per-class IoU threshold (note col. 10 lines 25-34, suppression utilizes filter). Regarding claims 6, 13, 17 and 19 Lin discloses, Wherein the class-agnostic IoU threshold is greater than 0.8, and the per-class IoU threshold is within a range of 0.3-0.45 (note col. 10 lines 25-34, suppression utilizes filter); Regarding claims 7, 9 and 14 Lin discloses, Wherein the image is part of video data, and the operations comprise generating the video index (note col. 2 lines 9-19, streaming video as image data). Regarding claims 10 and 18 Lin discloses, Wherein the first object at least partially occludes the second object in the image (note col. 3 lines 27-32, overlap). Regarding claim 11 Lin discloses, Wherein the second subset of bounding boxes includes a single bounding box for the first object and a single bounding box for the second object (note col. 12 lines 1-15, second bounding box). Related Prior Art Tang et al (10,565,473) Generate preliminary bounding boxes for the multiple objects, wherein each of the preliminary bounding boxes comprises a size, a location, a class, and a confidence score (note fig. 6 block 605 and 607 and col. 11 lines – col. 12 lines 10). Wang et al (10,755,114) Receive an image depicting multiple objects belonging to different classes (note fig. 7 and col. 10 lines 27-50, input image and tree classifier). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to GREGORY M DESIRE whose telephone number is (571)272-7449. The examiner can normally be reached Monday-Friday 6:30am-3:00pm. 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, Henok Shiferaw can be reached at 571-272-4637. 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. G.D. June 25, 2026 /GREGORY M DESIRE/Primary Examiner, Art Unit 2676
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Prosecution Timeline

Mar 12, 2024
Application Filed
Jun 29, 2026
Non-Final Rejection mailed — §102 (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
91%
Grant Probability
97%
With Interview (+5.9%)
2y 5m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1095 resolved cases by this examiner. Grant probability derived from career allowance rate.

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