Prosecution Insights
Last updated: October 26, 2026

Cao Dang Vuong, USPTO Patent Examiner

Listed by the USPTO as VUONG, CAO DANG

Tech Center 3600 • Art Units: 2153 3694

This examiner grants 70% of resolved cases

Analysis

VUONG, CAO DANG examines in Tech Center 3600 and Art Unit 2153. The record shows 116 resolved cases, a 69.8% allowance rate, and a median of 1163 days to allowance. The interview lift is 23.2%, supporting consideration of examiner discussions while the limited case volume calls for careful application to individual matters.

Qomplx LLC, NEC Corporation, and Amazon Technologies Inc. are the listed companies. The leading firms are NK Patent Law, Blank Rome LLP - Houston General, and HAMILTON, BROOK, SMITH & REYNOLDS, P.C. Counsel may benefit from combining interview preparation with focused written responses and planning for the median prosecution duration.

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

Performance Statistics

69.8%
Allow Rate
+17.8% vs TC avg
136
Total Applications
+23.2%
Interview Lift
1163
Avg Prosecution Days
Based on 116 resolved cases, 2023–2026

Rejection Statute Breakdown

10.4%
§101 Eligibility
14.8%
§102 Novelty
65.5%
§103 Obviousness
6.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19104404 INFORMATION PROCESSING APPARATUS, RELATED WORD DETECTION METHOD, AND STORAGE MEDIUM Final Rejection NEC Corporation
18473152 DYNAMIC PREFETCHING FOR DATABASE QUERIES Final Rejection Amazon Technologies, Inc.
18456021 MINING PATTERNS IN A HIGH-DIMENSIONAL SPARSE FEATURE SPACE Non-Final OA Microsoft Technology Licensing, LLC
18335478 ADAPTIVE TF-IDF INFERENCE ENGINE Non-Final OA International Business Machines Corporation

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Frequently Asked Questions

What is examiner Cao Dang Vuong's allowance rate?

69.8% of resolved applications examined by Cao Dang Vuong were allowed (116 resolved cases), compared with 72.2% across Art Unit 2153 over the last five years.

Does an interview help with examiner Cao Dang Vuong?

This examiner's interview lift is +23.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Cao Dang Vuong take to allow a patent?

Applications allowed by Cao Dang Vuong took 1,163 days on average from filing to allowance.

Which art unit does examiner Cao Dang Vuong work in?

Cao Dang Vuong examines applications in Art Unit 2153 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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