Prosecution Insights
Last updated: October 26, 2026

Yu-Hsi David Sun, USPTO Patent Examiner

Listed by the USPTO as SUN, YU-HSI DAVID

Tech Center 2800 • Art Units: 2800 2817 2895 2897

This examiner grants 78% of resolved cases

Analysis

Sun, Yu-Hsi David works in Tech Center 2800 and Art Unit 2800. The profile covers 887 resolved cases and reports a 77.6% allowance rate. The large record gives practitioners a strong reference for evaluating likely outcomes and planning claim development in the relevant examination environment.

The interview lift is 8.5%, showing a positive association between interviews and allowance outcomes. The median time to allowance is 974 days. The listed companies are Samsung Electronics, Wolfspeed, and Samsung Display. The listed firms are NORTH AMERICA INTELLECTUAL PROPERTY CORPORATION, CKC & Partners, and DORITY & MANNING. Counsel may use the profile when setting prosecution expectations.

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

Performance Statistics

77.6%
Allow Rate
+9.6% vs TC avg
912
Total Applications
+8.5%
Interview Lift
974
Avg Prosecution Days
Based on 887 resolved cases, 2023–2026

Rejection Statute Breakdown

3.6%
§101 Eligibility
22.4%
§102 Novelty
45.9%
§103 Obviousness
20.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18766960 SEMICONDUCTOR DEVICE Non-Final OA Samsung Electronics Co., Ltd.
18746889 IMAGE SENSOR Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18660294 SEMICONDUCTOR PACKAGE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18674046 DISPLAY DEVICE Non-Final OA SAMSUNG DISPLAY CO., LTD.
18534698 SEMICONDUCTOR ELEMENT, ELECTRONIC DEVICE COMPRISING SEMICONDUCTOR ELEMENT, AND SEMICONDUCTOR CHIP Final Rejection InnoLux Corporation
18781853 TECHNIQUES FOR POSITIONING BOND PADS OF MICROELECTRONIC DEVICES AND RELATED MICROELECTRONIC DEVICES AND SYSTEMS Non-Final OA Micron Technology, Inc.
18658874 APPARATUSES AND METHODS FOR COUPLING A PLURALITY OF SEMICONDUCTOR DEVICES Non-Final OA MICRON TECHNOLOGY, INC.
18641571 EX-SITU MANUFACTURE OF METAL MICRO-WIRES AND FIB PLACEMENT IN IC CIRCUITS Non-Final OA Texas Instruments Incorporated
18735859 SIDEWALL PINCH-OFF OF WORK FUNCTION METAL Non-Final OA INTERNATIONAL BUSINESS MACHINES CORPORATION
18444858 SELF-ALIGNED STORAGE NODE CONTACT IN DYNAMIC RANDOM ACCESS MEMORY (DRAM) DEVICE Non-Final OA Applied Materials, Inc.
18779268 SEMICONDUCTOR DEVICES Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.

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Frequently Asked Questions

What is examiner Yu-Hsi David Sun's allowance rate?

77.6% of resolved applications examined by Yu-Hsi David Sun were allowed (887 resolved cases), compared with 69.7% across Art Unit 2800 over the last five years.

Does an interview help with examiner Yu-Hsi David Sun?

This examiner's interview lift is +8.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yu-Hsi David Sun take to allow a patent?

Applications allowed by Yu-Hsi David Sun took 974 days on average from filing to allowance.

Which art unit does examiner Yu-Hsi David Sun work in?

Yu-Hsi David Sun examines applications in Art Unit 2800 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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