Prosecution Insights
Last updated: October 26, 2026

Karl Duc Truong, USPTO Patent Examiner

Listed by the USPTO as TRUONG, KARL DUC

Tech Center 3600 • Art Units: 2614 3645

This examiner grants 64% of resolved cases

Analysis

TRUONG, KARL DUC works in tech center 3600 and art unit 2614. The record includes 53 resolved cases, an allowance rate of 64.2%, and a median of 997 days to allowance. The limited case history calls for measured interpretation, while the available figures indicate a moderate observed allowance outcome and a timeline requiring deliberate prosecution planning.

The interview lift is 34.0%, making interviews a relevant option when counsel is addressing specific examination issues. The listed companies are Samsung Electronics Co., Ltd., Canon Inc., and Google LLC. The listed firms are Jefferson IP Law, LLP, BANNER & WITCOFF, LTD., and BIRCH STEWART KOLASCH & BIRCH, LLP. These names provide context for the profile’s applicant and counsel activity.

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

Performance Statistics

64.2%
Allow Rate
+12.2% vs TC avg
90
Total Applications
+34.0%
Interview Lift
997
Avg Prosecution Days
Based on 53 resolved cases, 2023–2026

Rejection Statute Breakdown

1.6%
§101 Eligibility
8.3%
§102 Novelty
86.5%
§103 Obviousness
2.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19193192 ELECTRONIC DEVICE, OPERATION METHOD, AND STORAGE MEDIUM FOR ANALYZING AND IMPROVING IMAGE QUALITY OF TRANSPARENT BACKGROUND IMAGE Non-Final OA Samsung Electronics Co., Ltd.
18965137 IMAGING DEVICE FOR COMPOSITING VIRTUAL IMAGE AND REAL IMAGE, AND CONTROL METHOD OF SAME Final Rejection CANON KABUSHIKI KAISHA
18880501 IMAGE SYNTHESIS PARAMETER DETERMINATION METHOD AND APPARATUS, AND IMAGE SYNTHESIS METHOD AND APPARATUS Non-Final OA Beijing Zitiao Network Technology Co., Ltd.
18355154 HYBRID REPRESENTATION FOR PHOTOREALISTIC SYNTHESIS, ANIMATION AND RELIGHTING OF HUMAN EYES Non-Final OA GOOGLE LLC
19104337 INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM Non-Final OA SONY GROUP CORPORATION
18841708 INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM Non-Final OA NEC Corporation
18035121 IMAGE RENDERING METHOD FOR TOMOGRAPHIC IMAGE DATA Non-Final OA KONINKLIJKE PHILIPS N.V.
18675247 Cloud Data Processing Non-Final OA Tencent Technology (Shenzhen) Company Limited
18036556 TRANSPARENCY RANGE FOR VOLUMETRIC VIDEO Final Rejection InterDigital CE Patent Holdings, SAS
18961873 ENCODING METHOD AND APPARATUS, DECODING METHOD AND APPARATUS, AND DEVICE Non-Final OA VIVO MOBILE COMMUNICATION CO., LTD.
18197327 Physical World Driven Environmental Themes for Avatars in Virtual/Augmented Reality Systems Non-Final OA International Business Machines Corporation
18519521 Dynamically Allocated Memory-Backed Traversal Stack for Ray Tracing Hardware Final Rejection Advanced Micro Devices, Inc.
19011059 SYSTEMS AND METHODS FOR CONTEXTUAL GENERATIVE TRANSFORMATIONS Final Rejection Dell Products L.P.

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Frequently Asked Questions

What is examiner Karl Duc Truong's allowance rate?

64.2% of resolved applications examined by Karl Duc Truong were allowed (53 resolved cases), compared with 66.9% across Art Unit 2614 over the last five years.

Does an interview help with examiner Karl Duc Truong?

This examiner's interview lift is +34.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Karl Duc Truong take to allow a patent?

Applications allowed by Karl Duc Truong took 997 days on average from filing to allowance.

Which art unit does examiner Karl Duc Truong work in?

Karl Duc Truong examines applications in Art Unit 2614 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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