Prosecution Insights
Last updated: October 02, 2026

Examiner: LEE, TSU-CHANG

Tech Center 4100 • Art Units: 2121 2122 2123 2126 2127 2128 2129 2148 4100

This examiner grants 73% of resolved cases

Analysis

Tsu-Chang Lee, in Tech Center 4100 and Art Unit 2121, has 431 resolved cases. The allowance rate is 72.6 percent. The interview lift is 14.0 percent, which is a moderate boost to the chances of allowance.

The median days to allowance is 1299. This timeline is based on the 431 resolved cases. The 72.6 percent allowance rate indicates a favorable environment for applicants. The 14.0 percent interview lift suggests that interviews are a useful tool for resolving issues.

In Art Unit 2121, the 1299 median days to allowance is a key planning figure. The allowance rate across resolved cases shows a consistent pattern of success. The interview lift is a helpful metric for practitioners to consider when developing their strategy. This data set provides a reliable outlook for future filings.

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

Performance Statistics

72.7%
Allow Rate
+12.7% vs TC avg
458
Total Applications
+13.8%
Interview Lift
1299
Avg Prosecution Days
Based on 432 resolved cases, 2023–2026

Rejection Statute Breakdown

39.2%
§101 Eligibility
6.4%
§102 Novelty
31.5%
§103 Obviousness
18.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18434691 CROSS-MODAL TRANSFER WITH CONTINUOUSLY WEIGHTED CONTRASTIVE LOSS Non-Final OA Samsung Electronics Co., Ltd.
18468351 LEARNING DATA GENERATION METHOD, LEARNING DATA GENERATION SYSTEM, AND COUNTERFEIT DETECTION SYSTEM Non-Final OA Samsung Electronics Co., Ltd.
18299342 Co-attentive Fusion with Unified Label Graph Representation for Low-resource Text Classification Non-Final OA Robert Bosch GmbH
18477171 PREDICTING DEPOSITIONAL ENVIRONMENTS USING WIRELINE LOGS, CORE INTERPRETATION, AND MACHINE LEARNING Non-Final OA Saudi Arabian Oil Company
17442770 INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD Non-Final OA SONY GROUP CORPORATION
18650164 COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM, DATA PROCESSING APPARATUS, AND DATA PROCESSING METHOD Non-Final OA Fujitsu Limited
18572100 METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PROVIDING AN ATTENTION BLOCK FOR NEURAL NETWORK-BASED IMAGE AND VIDEO COMPRESSION Non-Final OA Nokia Technologies Oy
18503606 TECHNIQUES FOR ENABLING ON-DEVICE INK STROKE PROCESSING Non-Final OA Microsoft Technology Licensing, LLC
18230138 AUTOMATIC DECOMPOSITION METHOD FOR MDP Final Rejection International Business Machines Corporation
18214406 COGNITIVE FRAMEWORK FOR NON-FUNCTIONAL REQUIREMENT BASED TECHNICAL DISPOSITION Non-Final OA International Business Machines Corporation
18026361 DEVICE, COMPUTING PLATFORM AND METHOD OF ANALYZING LOG FILES OF AN INDUSTRIAL PLANT Final Rejection SIEMENS AKTIENGESELLSCHAFT
18405091 METHOD OF DISEASE PREDICTION AND DISEASE ANALYSIS FOR DISEASE PROGRESSION MONITORING AND DISEASE MANAGEMENT AND APPARATUS FOR PERFORMING METHOD Non-Final OA WELT CORP., LTD
18407469 COMPUTING SYSTEM FOR PROCESSING NEURAL NETWORK AND METHOD OF OPERATING THE SAME Non-Final OA SK hynix Inc.
18448049 TRAINING MACHINE LEARNING MODELS USING SIMULATION FOR ROBOTICS SYSTEMS AND APPLICATIONS Non-Final OA NVIDIA CORPORATION
18233971 CLASSIFYING FAILURE MODES OF LARGE LANGUAGE MODELS (LLMS) FOR COMPUTER NETWORK ANALYTICS Final Rejection Cisco Technology, Inc.
18315752 SYSTEMS AND METHODS FOR TRAINING AND USING A MACHINE-LEARNING MODEL FOR DETERMINING THE SIMILARITY OF ENTITIES Final Rejection SHOPIFY INC.
18572377 METHOD AND APPARATUS FOR COMPUTER VISION PROCESSING Non-Final OA TSINGHUA UNIVERSITY
18520800 MODULARIZED ARCHITECTURE OPTIMIZATION FOR SEMI-SUPERVISED INCREMENTAL LEARNING Non-Final OA SRI International
18623731 METHOD FOR GENERATING INFECTIOUS DISEASE PREDICTION KEYWORD THAT CHANGES OVER TIME BASED ON WORD EMBEDDING AND APPARATUS PERFORMING THE SAME Non-Final OA THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION

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