Prosecution Insights
Last updated: October 26, 2026

Grace Yeh-Eun Saet Cha, USPTO Patent Examiner

Listed by the USPTO as CHA, GRACE YEH-EUN SAET

Tech Center 2800 • Art Units: 2811 2897

This examiner grants 96% of resolved cases

Analysis

CHA, GRACE YEH-EUN SAET has 50 resolved cases, with an allowance rate of 96.0% and a median of 1283 days to allowance. The profile is assigned to Tech Center 2800 and art unit 2811. The 5.6% interview lift indicates a limited measured change associated with interviews in this record.

The listed company portfolio is concentrated in display technology, including Samsung Display Co., Ltd., BOE Technology Group Co., Ltd., and LG Display Co., Ltd. BIRCH STEWART KOLASCH & BIRCH, LLP, Womble Bond Dickinson US LLP, and AMPACC Law Group, PLLC are the leading listed firms. Practitioners handling similar display matters can use the allowance rate and interview measure together when planning prosecution strategy.

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

Performance Statistics

96.0%
Allow Rate
+28.0% vs TC avg
74
Total Applications
+5.6%
Interview Lift
1283
Avg Prosecution Days
Based on 50 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
27.1%
§102 Novelty
65.7%
§103 Obviousness
7.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18566943 RED-LIGHT-EMITTING SEMICONDUCTOR LIGHT-EMITTING DEVICE AND METHOD FOR MANUFACTURING SAME Final Rejection LG ELECTRONICS INC.
18530342 SEMICONDUCTOR MEMORY DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17854508 ORGANIC LIGHT EMITTING DISPLAY APPARATUS Final Rejection LG Display Co., Ltd.
17855036 Thin-Film Transistor Array Substrate and Display Device Non-Final OA LG Display Co., Ltd.
18782804 DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME Non-Final OA Samsung Display Co., LTD.
18188303 DISPLAY DEVICE Non-Final OA Samsung Display Co., Ltd.
17944313 DISPLAY DEVICE INCLUDING LAYERS HAVING PARTICULAR REFRACTIVE INDEXES Non-Final OA Samsung Display Co., LTD.
18034048 DISPLAY SUBSTRATES, DISPLAY PANELS AND DISPLAY APPARATUSES Non-Final OA BOE Technology Group Co., Ltd.
18044806 DISPLAY SUBSTRATE AND DISPLAY DEVICE WITH NARROWED LOWER BORDER Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
18022924 DISPLAY BASE PLATE AND METHOD FOR MANUFACTURING THE SAME, AND DISPLAY PANEL Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
18265090 Display Device, Method For Manufacturing Display Device, and Electronic Device Final Rejection Semiconductor Energy Laboratory Co., LTD.
18624206 COAXIAL VIA FORMATION WITH SIDEWALL CONTACTS Non-Final OA International Business Machines Corporation
18501872 SEMICONDUCTOR DEVICE INCLUDING MEMORY CELLS STACKED IN VERTICAL DIRECTION Non-Final OA SK hynix Inc.
18505274 RESISTOR-DIODE LADDER, ESD PROTECTION CIRCUIT INCLUDING SAME, SEMICONDUCTOR DEVICE INCLUDING SAME, AND METHOD OF MANUFACTURING SAME Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18464508 INTEGRATED CIRCUIT, SYSTEM AND METHOD OF FORMING THE SAME Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.

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Frequently Asked Questions

What is examiner Grace Yeh-Eun Saet Cha's allowance rate?

96.0% of resolved applications examined by Grace Yeh-Eun Saet Cha were allowed (50 resolved cases), compared with 72.2% across Art Unit 2811 over the last five years.

Does an interview help with examiner Grace Yeh-Eun Saet Cha?

This examiner's interview lift is +5.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Grace Yeh-Eun Saet Cha take to allow a patent?

Applications allowed by Grace Yeh-Eun Saet Cha took 1,283 days on average from filing to allowance.

Which art unit does examiner Grace Yeh-Eun Saet Cha work in?

Grace Yeh-Eun Saet Cha examines applications in Art Unit 2811 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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