Prosecution Insights
Last updated: October 02, 2026

Examiner: CHEN, DAVID Z

Tech Center 2800 • Art Units: 2811 2815

This examiner grants 45% of resolved cases

Analysis

David Z. Chen, an examiner in Tech Center 2800 and Art Unit 2811, has 689 resolved cases. The allowance rate is 44.7%, which is below the average for many units. The median days to allowance is 1311, reflecting a standard duration for successful cases. This 1311-day timeline is a key metric for practitioners to manage. The 44.7% rate suggests a rigorous examination process in Art Unit 2811.

The interview lift is 50.1%, which is very high. This suggests that interviews are nearly essential for improving the 44.7% allowance rate. In Tech Center 2800, the 1311-day median pendency can be managed more effectively by engaging the examiner directly. The 50.1% lift is one of the most impactful metrics in this profile. With 689 resolved cases, the data provides a very strong statistical basis for this recommendation.

Practitioners should prioritize interviews given the 50.1% lift over the 44.7% baseline. The 1311-day median to allowance should be the expected timeline for those who succeed. Overall, the 689 cases show that direct communication is a decisive factor for success with this examiner. Applicants in Art Unit 2811 should use the 50.1% lift to navigate the 1311-day duration.

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

Performance Statistics

44.7%
Allow Rate
-23.3% vs TC avg
754
Total Applications
+50.1%
Interview Lift
1311
Avg Prosecution Days
Based on 689 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
24.9%
§102 Novelty
49.1%
§103 Obviousness
25.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18901283 SEMICONDUCTOR DEVICE AND A METHOD FOR FABRICATING THE SAME Final Rejection SAMSUNG ELECTRONICS CO., LTD.
18612828 CHIP-ON-FILM PACKAGE AND MANUFACTURING METHOD THEREOF Non-Final OA Samsung Electronics Co., Ltd.
18610790 SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Samsung Electronics Co., Ltd.
18507905 TRANSISTOR, METHOD OF MANUFACTURING THE TRANSISTOR, ELECTRONIC DEVICE INCLUDING TRANSISTOR, AND ELECTRONIC APPARATUS INCLUDING THE TRANSISTOR Final Rejection Samsung Electronics Co., Ltd.
18370149 SEMICONDUCTOR MEMORY DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18496902 ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS Final Rejection SEIKO EPSON CORPORATION
18028791 LIGHT-EMITTING DIODE CHIP, MANUFACTURING METHOD THEREOF AND DISPLAY APPARATUS Final Rejection BOE TECHNOLOGY GROUP CO., LTD.
18314993 DISPLAY DEVICE AND MANUFACTURING METHOD OF DISPLAY DEVICE Final Rejection Samsung Display Co., LTD.
18127555 DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Samsung Display Co., LTD.
17993252 DISPLAY DEVICE INCLUDING HEAT DISSIPATION PART AND MANUFACTURING METHOD FOR THE SAME Final Rejection Samsung Display Co., LTD.
18540557 DISPLAY DEVICE Non-Final OA LG Display Co., Ltd.
18522699 Display Device Final Rejection LG Display Co., Ltd.
18193539 OPTICAL MEMBER AND LIGHT-EMITTING DEVICE Final Rejection NICHIA CORPORATION
18787281 LIGHT-EMITTING DEVICE HAVING A SUBSTRATE WITH HIGH ACCURACY Non-Final OA InnoLux Corporation
18153984 DISPLAY DEVICE HAVING BAND-PASS FILTER AND LIGHT CONVERSION LAYER Final Rejection Innolux Corporation
18244354 MULTI-PLANARITY OF LIGHT EMITTING SURFACES IN LED COMPONENTS Non-Final OA CreeLED, Inc.
18817038 INKJET PRINTING DEDICATED TEST PINS Non-Final OA QUALCOMM Incorporated
18607986 DIE PACKAGE WITH ENTANGLED VERTICAL INTERCONNECTS COUPLED TO A ROUTING SUBSTRATE FOR REDUCED ROUTING SUBSTRATE LAYERS, AND RELATED INTEGRATED CIRCUIT (IC) PACKAGES AND FABRICATION METHODS Non-Final OA QUALCOMM Incorporated
18532318 QUANTUM DOT IMAGE SENSOR DEVICES AND METHODS OF MANUFACTURING THE SAME Non-Final OA Adeia Semiconductor Bonding Technologies Inc.
17451026 SEMICONDUCTOR DEVICE WITH SEAL RING Non-Final OA Yangtze Memory Technologies Co., Ltd.
18568584 LIGHT DETECTING DEVICE AND ELECTRONIC APPARATUS Non-Final OA SONY SEMICONDUCTOR SOLUTIONS CORPORATION
18006622 SEMICONDUCTOR DEVICE AND ELECTRONIC APPARATUS Non-Final OA SONY SEMICONDUCTOR SOLUTIONS CORPORATION
17534224 SELECTIVE HEAT SINK Non-Final OA BAE Systems Information and Electronic Systems Integration Inc.
17551081 TESTING SEMICONDUCTOR COMPONENTS Non-Final OA TEXAS INSTRUMENTS INCORPORATED
18789668 PACKAGE STRUCTURE AND METHOD OF FORMING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18733880 PACKAGE STRUCTURE WITH REWIRING LAYER AND METHOD OF FORMING THE SAME Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
18363077 INTEGRATION OF LOW AND HIGH VOLTAGE DEVICES ON SUBSTRATE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
17837664 GRAPHENE-CLAD METAL INTERCONNECT Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
18591695 IN SITU REMOVABLE BLOCKING LAYER FORMATION Non-Final OA Tokyo Electron Limited
18369310 INTERPOSER WITH LINES HAVING PORTIONS SEPARATED BY BARRIER LAYERS Non-Final OA Microchip Technology Incorporated

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