Prosecution Insights
Last updated: October 27, 2026

Hien Dieu Thi Khuu, USPTO Patent Examiner

Listed by the USPTO as KHUU, HIEN DIEU THI

Tech Center 3600 • Art Units: 2116 2119 2121 2123 2615 2857 2863 2865 3652

This examiner grants 87% of resolved cases

Analysis

KHUU, HIEN DIEU THI is a USPTO patent examiner in tech center 3600 and art unit 2116. The profile records 476 resolved cases, an allowance rate of 87.2%, and a median of 934 days to allowance. Interview lift is 14.1%, reflecting a higher allowance outcome for interview-associated cases than for the corresponding cases without interviews.

The listed companies are Samsung Electronics Co., Ltd., Toyota Motor Corporation, and Vestas Wind Systems A/S. The leading firms are Nixon & Vanderhye PC, IPUSA, P.L.L.C, and MAIER & MAIER, PLLC. The allowance history provides a useful basis for evaluating prosecution expectations. An interview may be considered as part of response planning, while the median timing supports scheduling, budgeting, and client updates.

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

Performance Statistics

87.2%
Allow Rate
+35.2% vs TC avg
505
Total Applications
+14.1%
Interview Lift
934
Avg Prosecution Days
Based on 476 resolved cases, 2023–2026

Rejection Statute Breakdown

17.5%
§101 Eligibility
33.5%
§102 Novelty
25.8%
§103 Obviousness
17.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18974462 AIR CONDITIONER AND METHOD FOR CONTROLLING THE SAME Non-Final OA Samsung Electronics Co., Ltd.
18589740 DISPLAY CONTROL METHOD AND ELECTRONIC DEVICE FOR SUPPORTING SAME Non-Final OA Samsung Electronics Co., Ltd.
18485468 AUTOMATED TRANSPORTATION SYSTEM Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18843048 A METHOD FOR CONTROLLING A POWER PLANT Non-Final OA VESTAS WIND SYSTEMS A/S
18847314 ADDITIVE MANUFACTURING PATH GENERATION DEVICE, ADDITIVE MANUFACTURING PATH GENERATION METHOD, ADDITIVE MANUFACTURING SYSTEM, AND ADDITIVE MANUFACTURING METHOD Non-Final OA Mitsubishi Electric Corporation
19002285 DEVICE MANAGEMENT APPARATUS, HEAT SOURCE SYSTEM, MANAGEMENT APPARATUS, AND DEVICE MANAGEMENT SYSTEM Non-Final OA DAIKIN INDUSTRIES, LTD.
18683796 POWER TRANSACTION SYSTEM, POWER SUPPLY TRANSACTION MANAGEMENT METHOD, AND POWER DEMAND TRANSACTION MANAGEMENT METHOD Final Rejection HITACHI, LTD.
19099160 SEMICONDUCTOR DEVICE MANUFACTURING SYSTEM, SERVER, AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD Non-Final OA HITACHI HIGH-TECH CORPORATION
18782667 SYSTEM AND METHOD FOR DYNAMICALLY ADJUSTING THIN-FILM DEPOSITION PARAMETERS Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18670026 PRODUCTION MANAGEMENT DEVICE AND PRODUCTION DEVICE Final Rejection SUMITOMO HEAVY INDUSTRIES, LTD.
17955529 SYSTEMS AND METHODS OF REMOTELY CONTROLLING CHANNEL RESETS FOR INPUT/OUTPUT MODULES OF INDUSTRIAL SYSTEMS Final Rejection ROCKWELL AUTOMATION TECHNOLOGIES, INC.
18010505 TECHNOLOGY FOR PROCESSING AND EXCHANGING SIGNALS BETWEEN A FIELD DEVICE AND A CONTROLLER Final Rejection Phoenix Contact GmbH & Co. KG
18849526 SIMULATION DEVICE, SIMULATION METHOD AND SIMULATION PROGRAM Non-Final OA THE JAPAN STEEL WORKS, LTD.

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Frequently Asked Questions

What is examiner Hien Dieu Thi Khuu's allowance rate?

87.2% of resolved applications examined by Hien Dieu Thi Khuu were allowed (476 resolved cases), compared with 70.1% across Art Unit 2116 over the last five years.

Does an interview help with examiner Hien Dieu Thi Khuu?

This examiner's interview lift is +14.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hien Dieu Thi Khuu take to allow a patent?

Applications allowed by Hien Dieu Thi Khuu took 934 days on average from filing to allowance.

Which art unit does examiner Hien Dieu Thi Khuu work in?

Hien Dieu Thi Khuu examines applications in Art Unit 2116 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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