Prosecution Insights
Last updated: October 26, 2026

Lechi Truong, USPTO Patent Examiner

Listed by the USPTO as TRUONG, LECHI

Tech Center 4100 • Art Units: 2194 4100

This examiner grants 87% of resolved cases

Analysis

TRUONG, LECHI is a USPTO patent examiner in Tech Center 4100 and art unit 2194. The examiner has 894 resolved cases, an allowance rate of 87.2%, and a median of 1104 days to allowance. The interview lift is 36.7%, a substantial positive relationship that makes interview preparation a notable prosecution consideration.

The listed companies are NVIDIA Corporation, International Business Machines Corporation, and Advanced Micro Devices Inc. The listed firms are Harrity & Harrity, LLP, NIXON & VANDERHYE, PC, and Invoke. The combination of a large record, high allowance rate, and positive interview lift supports a deliberate approach to presenting amendments and resolving issues through examiner interaction.

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

Performance Statistics

87.2%
Allow Rate
+27.2% vs TC avg
934
Total Applications
+36.7%
Interview Lift
1104
Avg Prosecution Days
Based on 894 resolved cases, 2023–2026

Rejection Statute Breakdown

18.1%
§101 Eligibility
4.2%
§102 Novelty
63.7%
§103 Obviousness
8.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18214199 Technique For Generating A Bone Plate Design Final Rejection Stryker European Operations Holdings LLC
18826499 Artificial Intelligence AI Control Apparatus and Acceleration Method Non-Final OA Huawei Technologies Co., Ltd.
18685745 Efficiency Engine In A Cloud Computing Architecture Final Rejection Microsoft Technology Licensing, LLC
18595632 SPECULATIVE EXECUTION USING PREDICTED RESPONSES AND DISTRIBUTED CANCEL Final Rejection International Business Machines Corporation
18530001 MIGRATING SENSITIVE DATA ACROSS CLOUD CONFIDENTIAL COMPUTING ENVIRONMENTS Final Rejection International Business Machines Corporation
18070180 APPLICATION PROGRAMMING INTERFACE TO TRANSFER INFORMATION BETWEEN ACCELERATOR MEMORY Final Rejection NVIDIA Corporation
17740041 DATA COMPRESSION API Final Rejection NVIDIA Corporation
17691808 Flexible Migration of Executing Software Between Processing Components Without Need For Hardware Reset Final Rejection NVIDIA Corporation
17572391 APPLICATION PROGRAMMING INTERFACE TO INDICATE EXECUTION OF GRAPH NODES Non-Final OA NVIDIA Corporation
17548433 APPLICATION PROGRAMMING INTERFACES FOR INTEROPERABILITY Non-Final OA NVIDIA Corporation
17548445 APPLICATION PROGRAMMING INTERFACES FOR INTEROPERABILITY Final Rejection NVIDIA Corporation
18197470 METHODS, APPARATUSES, AND COMPUTER PROGRAM PRODUCTS FOR PROVIDING A DYNAMIC EXTERNAL USER INTERFACE TO A PROCESS SIMULATION SERVICE Non-Final OA Honeywell International Inc.
18392228 PERFORMING A SEPARABLE OPERATION ON A TWO-DIMENSIONAL ARRAY OF VALUES AT A PROCESSING UNIT COMPRISING A MEMORY Final Rejection Imagination Technologies Limited
18394797 CONTROLLER FOR AN ARRAY OF DATA PROCESSING ENGINES Final Rejection Advanced Micro Devices, Inc.
18147081 Processing Element-Centric All-to-All Communication Non-Final OA Advanced Micro Devices, Inc.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Lechi Truong's allowance rate?

87.2% of resolved applications examined by Lechi Truong were allowed (894 resolved cases), compared with 68.9% across Art Unit 2194 over the last five years.

Does an interview help with examiner Lechi Truong?

This examiner's interview lift is +36.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lechi Truong take to allow a patent?

Applications allowed by Lechi Truong took 1,104 days on average from filing to allowance.

Which art unit does examiner Lechi Truong work in?

Lechi Truong examines applications in Art Unit 2194 in Tech Center 4100.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month