Prosecution Insights
Last updated: October 26, 2026

Tuankhanh D Phan, USPTO Patent Examiner

Listed by the USPTO as PHAN, TUANKHANH D

Tech Center 2100 • Art Units: 2154 2156 2163

This examiner grants 79% of resolved cases

Analysis

PHAN, TUANKHANH D is a USPTO patent examiner in tech center 2100 and art unit 2154. The profile reports 591 resolved cases, an allowance rate of 79.4%, and a median of 1225 days to allowance. The interview lift is 12.6%, showing a positive association between interviews and allowance outcomes in the reported cases.

The listed companies are Pure Storage Inc., Beijing Zitiao Network Technology Co., Ltd., and Mercedes-Benz Group AG. The listed firms are FIG. 1 Patents, Keller Preece PLLC, and Patent Portfolio Builders, PLLC. Practitioners can use the allowance rate to establish initial expectations and the median timing to plan prosecution activity. The interview measure supports considering direct examiner engagement when written submissions alone may not efficiently address claim interpretation or technical distinctions.

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

Performance Statistics

79.4%
Allow Rate
+24.4% vs TC avg
609
Total Applications
+12.6%
Interview Lift
1225
Avg Prosecution Days
Based on 591 resolved cases, 2023–2026

Rejection Statute Breakdown

14.1%
§101 Eligibility
21.1%
§102 Novelty
53.6%
§103 Obviousness
4.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18570583 CONVERSION METHOD AND APPARATUS FOR MULTIMEDIA EDITING FILE, DEVICE AND MEDIUM Final Rejection Beijing Zitiao Network Technology Co., Ltd.
19016507 RAPID DATA REPLICATION IN A DISTRIBUTED FLASH STORAGE SYSTEM Non-Final OA PURE STORAGE, INC.
18593140 DYNAMICALLY CONFIGURABLE STORAGE SYSTEM Non-Final OA PURE STORAGE, INC.
18878166 METHOD FOR PROCESSING LOG FILES, DATA PROCESSING SYSTEM AND VEHICLE Non-Final OA MERCEDES-BENZ GROUP AG
18594376 DIGITAL CONTENT GENERATION FROM A TEXT-BASED INPUT Non-Final OA Adobe Inc.

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Frequently Asked Questions

What is examiner Tuankhanh D Phan's allowance rate?

79.4% of resolved applications examined by Tuankhanh D Phan were allowed (591 resolved cases), compared with 67.7% across Art Unit 2154 over the last five years.

Does an interview help with examiner Tuankhanh D Phan?

This examiner's interview lift is +12.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tuankhanh D Phan take to allow a patent?

Applications allowed by Tuankhanh D Phan took 1,225 days on average from filing to allowance.

Which art unit does examiner Tuankhanh D Phan work in?

Tuankhanh D Phan examines applications in Art Unit 2154 in Tech Center 2100 (Computing & Software).

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