Prosecution Insights
Last updated: October 02, 2026

Examiner: CHOI, CALVIN Y

Tech Center 4100 • Art Units: 2812 4127

This examiner grants 82% of resolved cases

Analysis

Calvin Y Choi, working in Tech Center 4100 and Art Unit 2812, has resolved 869 cases. The allowance rate is 81.8%, which is a high success rate for applicants. The interview lift is 17.6%, indicating that interviews are a productive way to improve the 81.8% chance of allowance. This suggests that verbal advocacy is an effective tool for overcoming rejections in this examiner's practice.

The median days to allowance is 816, reflecting an efficient prosecution timeline for the 869 resolved cases. This 816-day metric is a key advantage for practitioners in Art Unit 2812. Practitioners should use the 17.6% interview lift to their advantage to move cases toward a grant. The 81.8% allowance rate suggests a consistent examination process, with a relatively fast path to allowance. These metrics from Tech Center 4100 provide a reliable foundation for strategic planning.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

81.8%
Allow Rate
+21.8% vs TC avg
885
Total Applications
+17.6%
Interview Lift
816
Avg Prosecution Days
Based on 869 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
21.7%
§102 Novelty
68.2%
§103 Obviousness
5.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18651993 IMAGE SENSOR AND METHOD OF MANUFACTURING THE SAME Non-Final OA Samsung Electronics Co., Ltd.
18601447 SEMICONDUCTOR MEMORY DEVICE Non-Final OA Samsung Electronics Co., Ltd.
18583514 DISPLAY DEVICE Non-Final OA Samsung Display Co., Ltd.
18545054 DISPLAY DEVICE AND DISPLAY PANEL Final Rejection LG Display Co., Ltd.
18601704 LIGHT SOURCE AND LIGHT-EMITTING MODULE Non-Final OA NICHIA CORPORATION
18455197 TRANSISTOR HAVING HIGH ELECTRON MOBILITY (HEMT), TRANSISTOR ASSEMBLY, METHOD FOR CONTROLLING AN HEMT, AND METHOD FOR PRODUCING AN HEMT Final Rejection Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
18848913 ADHESIVE FILM FOR SEMICONDUCTORS, INTEGRATED DICING/DIE BONDING FILM AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE Non-Final OA Resonac Corporation
18622671 ELECTRONIC DEVICES COMPRISING REDUCED CHARGE CONFINEMENT REGIONS IN STORAGE NODES OF PILLARS AND RELATED METHODS AND SYSTEMS Non-Final OA Micron Technology, Inc.
18426140 SEMICONDUCTOR DEVICE, SEMICONDUCTOR PACKAGE AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18601062 CARRIER MODIFICATION DEVICES FOR AVOIDING CHANNEL LENGTH REDUCTION AND METHODS FOR FABRICATING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company Limited
18610288 SEMICONDUCTOR DEVICE Non-Final OA ROHM CO., LTD.
18509591 SWITCHING MEMORY ELEMENTS ACCESSED BY HETEROJUNCTION BIPOLAR TRANSISTORS Non-Final OA GlobalFoundries U.S. Inc.

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