Prosecution Insights
Last updated: October 26, 2026

Tho V Duong, USPTO Patent Examiner

Listed by the USPTO as DUONG, THO V

Tech Center 3700 • Art Units: 3743 3744 3763

This examiner grants 67% of resolved cases

Analysis

DUONG, THO V is a USPTO patent examiner in tech center 3700 and art unit 3743. The profile records 1221 resolved cases, a 67.0% allowance rate, and a median of 1205 days to allowance. Interviews show a 17.6% lift, indicating a positive association that can inform examiner-engagement decisions.

The listed companies are Hanon Systems, Valeo S.A., and Cooler Master Co., Ltd. The listed firms are Barron & Young PLLC, BCF LLP (Misc.), and BIRCH STEWART KOLASCH & BIRCH, LLP. The large resolved-case record provides a substantial historical reference, while the pendency figure supports attention to response timing and portfolio scheduling.

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

Performance Statistics

67.0%
Allow Rate
-3.0% vs TC avg
1,253
Total Applications
+17.6%
Interview Lift
1205
Avg Prosecution Days
Based on 1221 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
30.8%
§102 Novelty
42.4%
§103 Obviousness
24.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18558668 COOLING STRUCTURE, POWER MODULE COMPRISING SUCH A COOLING STRUCTURE, ELECTRICAL POWER CONVERTER, SUCH AS AN INVERTER, COMPRISING SUCH A POWER MODULE Final Rejection Valeo eAutomotive Germany GmbH
18604515 MICRO-CHANNEL HEAT EXCHANGER AND HEAT PUMP SYSTEM HAVING THE SAME Final Rejection Carrier Corporation
18734392 REFRIGERANT PIPE, HEAT EXCHANGER, AND METHOD FOR PRODUCING REFRIGERANT PIPE Non-Final OA DAIKIN INDUSTRIES, LTD.
18966245 LOW-PRESSURE HEAT PIPES AND HEAT TRANSFER METHODS USING LOW-PRESSURE FOR HEAT PIPES Non-Final OA HONEYWELL INTERNATIONAL INC.
19048720 AIR CONDITIONER FOR VEHICLE Non-Final OA Hanon Systems
18248471 COOLER WITH TWO SUBSTANTIALLY PARALLEL FLOW CHAMBERS AND THREE SUBSTANTIALLY PARALLEL PLATES Non-Final OA Hanon Systems
18207527 COMPOSITE HEAT EXCHANGE APPARATUS FOR A TURBINE ENGINE Non-Final OA Raytheon Technologies Corporation

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Frequently Asked Questions

What is examiner Tho V Duong's allowance rate?

67.0% of resolved applications examined by Tho V Duong were allowed (1,221 resolved cases), compared with 0.0% across Art Unit 3743 over the last five years.

Does an interview help with examiner Tho V Duong?

This examiner's interview lift is +17.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tho V Duong take to allow a patent?

Applications allowed by Tho V Duong took 1,205 days on average from filing to allowance.

Which art unit does examiner Tho V Duong work in?

Tho V Duong examines applications in Art Unit 3743 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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