Prosecution Insights
Last updated: October 27, 2026

Phuong Thao Cao, USPTO Patent Examiner

Listed by the USPTO as CAO, PHUONG THAO

Tech Center 2100 • Art Units: 2154 2164

This examiner grants 78% of resolved cases

Analysis

Phuong Thao Cao has overseen 778 resolved cases in Art Unit 2154, maintaining an allowance rate of 78.1 percent. The median pendency to reach an allowance is 1068 days within Tech Center 2100. An interview lift of 14.6 percent is also recorded for these cases.

The 14.6 percent interview lift indicates that verbal advocacy can improve the 78.1 percent allowance probability. This lift is a relevant factor for practitioners to consider alongside the 1068-day median wait. The 778 resolved cases provide the basis for these metrics in this specific art unit.

International Business Machines Corporation, Google LLC, and Tencent Technology (Shenzhen) Company Limited are the top companies appearing before this examiner. Firms such as Anova Law Group, PLLC and Blueshift IP LLC have experience with these cases. Cooper Legal Group LLC also appears as a key firm.

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

Performance Statistics

78.1%
Allow Rate
+23.1% vs TC avg
803
Total Applications
+14.6%
Interview Lift
1068
Avg Prosecution Days
Based on 778 resolved cases, 2023–2026

Rejection Statute Breakdown

17.6%
§101 Eligibility
6.6%
§102 Novelty
41.4%
§103 Obviousness
24.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19216687 MULTI-VECTOR RETRIEVAL VIA FIXED DIMENSIONAL ENCODINGS Non-Final OA Google LLC
19359421 DATABASE RECOVERY METHOD AND APPARATUS, STORAGE MEDIUM, AND ELECTRONIC DEVICE Non-Final OA TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
19345953 DATASET PREPARATION Non-Final OA INTERNATIONAL BUSINESS MACHINES CORPORATION
18322727 GENERATION OF GRAPHICAL ICONS FOR TAXONOMY NODES Non-Final OA International Business Machines Corporation
18075467 PRESENTING CONTENT OF AN APPLICATION Non-Final OA Yahoo Assets LLC

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Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Phuong Thao Cao's allowance rate?

78.1% of resolved applications examined by Phuong Thao Cao were allowed (778 resolved cases), compared with 67.7% across Art Unit 2154 over the last five years.

Does an interview help with examiner Phuong Thao Cao?

This examiner's interview lift is +14.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Phuong Thao Cao take to allow a patent?

Applications allowed by Phuong Thao Cao took 1,068 days on average from filing to allowance.

Which art unit does examiner Phuong Thao Cao work in?

Phuong Thao Cao examines applications in Art Unit 2154 in Tech Center 2100 (Computing & Software).

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