Prosecution Insights
Last updated: October 02, 2026

Examiner: CHUNG, DANIEL WONSUK

Tech Center 2600 • Art Units: 2659

This examiner grants 59% of resolved cases

Analysis

Daniel Wonsuk Chung operates within Art Unit 2659 in Tech Center 2600. With 54 resolved cases, the examiner maintains an allowance rate of 59.3 percent. This baseline indicates the frequency with which applications reach a grant under this examiner's review in this specific technical area.

The data highlights an interview lift of 31.2 percent. This metric suggests that engaging in personal communication with the examiner may improve the probability of allowance compared to the 59.3 percent base rate. Practitioners should consider this strategy as a method to navigate the prosecution process and resolve potential rejections more effectively through direct dialogue.

The median days to allowance for this examiner is 1091. This timeline provides a benchmark for expected pendency when an application is successfully prosecuted to a grant. Understanding these metrics helps in setting client expectations for both the likely outcomes and the total duration of the patent acquisition process under this examiner's review. These figures provide a data-grounded foundation for practitioners to develop an effective prosecution strategy when working with this examiner.

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

Performance Statistics

59.3%
Allow Rate
-2.7% vs TC avg
84
Total Applications
+31.2%
Interview Lift
1091
Avg Prosecution Days
Based on 54 resolved cases, 2023–2026

Rejection Statute Breakdown

24.7%
§101 Eligibility
17.6%
§102 Novelty
50.6%
§103 Obviousness
6.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17972916 ELECTRONIC DEVICE FOR REGISTERING AN EXTERNAL ELECTRONIC DEVICE AND OPERATING METHOD THEREOF Final Rejection SAMSUNG ELECTRONICS CO., LTD.
17939805 SPEECH RECOGNITION FOR MULTIPLE USERS USING SPEECH PROFILE COMBINATION Final Rejection Apple Inc.
18480342 TEXT PROCESSING METHOD AND COMPUTING DEVICE Non-Final OA Huawei Cloud Computing Technologies Co., Ltd.
18775561 Reducing Streaming ASR Model Delay With Self Alignment Final Rejection Google LLC
18055395 Multi-Assistant Warm Words Final Rejection Google LLC
19019072 INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM IN WHICH INFORMATION PROCESSING PROGRAM IS RECORDED Non-Final OA SHARP KABUSHIKI KAISHA
18459136 ARTIFICIAL INTELLIGENCE SYSTEM FOR IDENTIFYING, EVALUATING, AND CONTROLLING OVERLAPPING RULE CODE Non-Final OA PAYPAL, INC.
18280159 LEARNING APPARATUS, ESTIMATION APPARATUS, METHODS AND PROGRAMS FOR THE SAME Non-Final OA NTT, Inc.
18340044 ENHANCING CHATBOTS THROUGH PROMPT-ENGINEERED LARGE LANGUAGE MODELS Final Rejection International Business Machines Corporation
17936101 SYLLABLE-BASED TEXT CONVERSION FOR PRONUNCIATION HELP Final Rejection INTERNATIONAL BUSINESS MACHINES CORPORATION
18373132 LARGE LANGUAGE MODEL CONTROLLER Non-Final OA Salesforce, Inc.
18610552 LANGUAGE CAPABILITY EVALUATION OF LARGE LANGUAGE MODELS Non-Final OA Zoom Video Communications, Inc.
18956845 METHOD AND SYSTEM FOR DIALOGUE DATA GENERATION AND PROCESSING Non-Final OA Hangzhou Alibaba International Internet Industry Co., Ltd.
18340808 Content System with Speech-Related Audio Content Replacement Feature Non-Final OA Roku, Inc.
18729248 SPATIAL CODING OF HIGHER ORDER AMBISONICS FOR A LOW LATENCY IMMERSIVE AUDIO CODEC Non-Final OA DOLBY INTERNATIONAL AB
18539791 GENERATIVE SPEECH MODEL FOR COMPACT DATA-DRIVEN SPEECH VECTORS FOR VERSATILE SPEECH APPLICATIONS Final Rejection Cisco Technology, Inc.

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