Prosecution Insights
Last updated: October 27, 2026

Lan Dai T Truong, USPTO Patent Examiner

Listed by the USPTO as TRUONG, LAN DAI T

Tech Center 3600 • Art Units: 2152 2444 2452 2454 3685

This examiner grants 91% of resolved cases

Analysis

TRUONG, LAN DAI T is a USPTO patent examiner in Tech Center 3600 and art unit 2152. The examiner has 790 resolved cases, an allowance rate of 91.1%, and a median of 1057 days to allowance. The interview lift is 11.6%, indicating a positive association between interviews and allowance outcomes in the available record.

Samsung Electronics Co., Ltd., ADP Inc., and International Business Machines Corporation appear among the listed companies. The listed firms are FOLEY & LARDNER LLP, Harrity & Harrity, LLP, and Holland & Hart LLP. The high allowance rate and sizable case history make claim presentation and interview preparation important considerations for practitioners handling matters in this art unit.

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

Performance Statistics

91.1%
Allow Rate
+39.1% vs TC avg
802
Total Applications
+11.6%
Interview Lift
1057
Avg Prosecution Days
Based on 790 resolved cases, 2023–2026

Rejection Statute Breakdown

20.3%
§101 Eligibility
2.5%
§102 Novelty
51.6%
§103 Obviousness
14.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19184810 ELECTRONIC DEVICE AND METHOD FOR CONTROLLING SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
19182358 VECTOR-BASED HYBRID SEARCH FOR CHATBOTS Non-Final OA ADP, Inc.
18230986 INTELLIGENT MESSAGE SHARING ACROSS RELATED DEVICES Non-Final OA International Business Machines Corporation
19201824 HYBRID SMS, EMAIL, PHONE SEAMLESS HANDOVER COMMUNICATION SYSTEM Non-Final OA Entrata, Inc.

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Frequently Asked Questions

What is examiner Lan Dai T Truong's allowance rate?

91.1% of resolved applications examined by Lan Dai T Truong were allowed (790 resolved cases), compared with 64.7% across Art Unit 2152 over the last five years.

Does an interview help with examiner Lan Dai T Truong?

This examiner's interview lift is +11.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lan Dai T Truong take to allow a patent?

Applications allowed by Lan Dai T Truong took 1,057 days on average from filing to allowance.

Which art unit does examiner Lan Dai T Truong work in?

Lan Dai T Truong examines applications in Art Unit 2152 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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