Prosecution Insights
Last updated: October 01, 2026

Examiner: HATFIELD, MARSHALL MU-NUO

Tech Center 2800 • Art Units: 2897

This examiner grants 93% of resolved cases

Analysis

Marshall Mu-Nuo Hatfield is a patent examiner in Tech Center 2800, specifically Art Unit 2897. The examiner has 96 resolved cases and a high allowance rate of 92.7 percent. This rate suggests a very favorable environment for applicants, with the vast majority of cases resulting in a grant. The 96 resolved cases provide a clear picture of the examiner's receptive approach in Tech Center 2800.

The interview lift for this examiner is 4.4 percent. This relatively low lift indicates that interviews do not significantly change the already high probability of allowance. Since the baseline allowance rate is 92.7 percent, most applications are likely to reach a grant without the need for the additional 4.4 percent lift provided by an interview in Art Unit 2897.

The median days to allowance for this examiner is 1237. This pendency figure shows that while the probability of success is high, the process still takes a considerable amount of time. Practitioners in Art Unit 2897 can expect a 92.7 percent chance of success, but should plan for a median timeline of 1237 days to reach that outcome.

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

Performance Statistics

92.7%
Allow Rate
+24.7% vs TC avg
106
Total Applications
+4.4%
Interview Lift
1237
Avg Prosecution Days
Based on 96 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
32.4%
§102 Novelty
52.0%
§103 Obviousness
15.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18637650 SEMICONDUCTOR DEVICES Non-Final OA Samsung Electronics Co., Ltd.
18694526 SWITCH STRUCTURE, METHOD FOR PREPARING SAME, AND RF CHIP Non-Final OA BOE Technology Group Co., Ltd.
18669814 APPARATUS FOR MANUFACTURING DISPLAY DEVICE, METHOD OF MANUFACTURING DISPLAY DEVICE USING APPARATUS FOR MANUFACTURING DISPLAY DEVICE, AND DISPLAY DEVICE MANUFACTURED BY METHOD OF MANUFACTURING DISPLAY DEVICE Non-Final OA Samsung Display Co., LTD.
18520673 DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME Non-Final OA Samsung Display Co., LTD.
17676045 DISPLAY DEVICE Non-Final OA Samsung Display Co., LTD.
17594547 DISPLAY PANEL AND ELECTRONIC DEVICE Non-Final OA Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
18341644 DEVICE, SYSTEM, AND MOVING BODY Final Rejection CANON KABUSHIKI KAISHA
17935647 INTEGRATED CIRCUIT DEVICES WITH CONTACTS USING NITRIDIZED MOLYBDENUM Non-Final OA Intel Corporation
18440444 SUBSTRATES WITH DOWNSET Non-Final OA Micron Technology, Inc.
18789164 METAL FUSE STRUCTURE BY VIA LANDING Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18782515 TUNING GATE LENGTHS IN MULTI-GATE FIELD EFFECT TRANSISTORS Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.

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