Prosecution Insights
Last updated: October 27, 2026

David H Tan, USPTO Patent Examiner

Listed by the USPTO as TAN, DAVID H

Tech Center 4100 • Art Units: 2141 2142 2145 2148 2171 2172 2177 4100

This examiner grants 32% of resolved cases

Analysis

TAN, DAVID H is assigned to tech center 4100 and art unit 2141. The profile includes 109 resolved cases, a 32.1% allowance rate, and a median of 1484 days to allowance. Interview lift is 16.6%, providing a positive but limited additional signal in the recorded outcomes.

Salesforce Inc., Beijing Zitiao Network Technology Co., Ltd., and Google LLC are the leading companies. The listed firms are Artegis Law Group, LLP, BakerHostetler, and COOLEY LLP. The allowance result and extended median timing support early claim development and realistic client scheduling, while the interview figure indicates that interviews may contribute without replacing substantive response work.

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

Performance Statistics

32.1%
Allow Rate
-27.9% vs TC avg
150
Total Applications
+16.6%
Interview Lift
1484
Avg Prosecution Days
Based on 109 resolved cases, 2023–2026

Rejection Statute Breakdown

5.9%
§101 Eligibility
20.7%
§102 Novelty
68.9%
§103 Obviousness
3.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18585753 ARTIFICIAL INTELLIGENCE TRAINING USING ACCESIBILITY DATA Non-Final OA Oracle International Corporation
18574623 METHOD, APPARATUS, DEVICE, AND STORAGE MEDIUM FOR MESSAGE PROCESSING Final Rejection Beijing Zitiao Network Technology Co., Ltd.
18424633 TRAINING NEURAL NETWORKS BY RESETTING DORMANT NEURONS Non-Final OA Google LLC
18666930 CONSTRUCTION METHOD AND APPARATUS FOR BIPARTITE GRAPH, AND DISPLAY METHOD AND APPARATUS FOR BIPARTITE GRAPH Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18288942 Industrial Ethernet Configuration Tool With Preview Capabilities Final Rejection ZEBRA TECHNOLOGIES CORPORATION
17106029 CAPTURING FEATURE ATTRIBUTION IN MACHINE LEARNING PIPELINES Final Rejection Amazon Technologies, Inc.
17928251 TWO-WAY HUMAN-MACHINE COMMUNICATION Non-Final OA THALES
17023458 METHOD AND SYSTEM FOR SCALABLE AND DECENTRALIZED INCREMENTAL MACHINE LEARNING WHICH PROTECTS DATA PRIVACY Final Rejection Siemens Healthcare GmbH
18422819 Systems and Methods for Constrained Text Generation Using Large Language Models Non-Final OA Salesforce, Inc.
17489284 CONFIGURING DYNAMIC INTERACTIONS BETWEEN APPLICATION ELEMENTS Non-Final OA Salesforce, Inc.
18304542 CONTEXTUAL ARTIFICIAL INTELLIGENCE (AI) BASED WRITING ASSISTANCE Final Rejection Microsoft Technology Licensing, LLC
17861407 CONFIGURATION OF ASSET MONITORING SYSTEMS Non-Final OA Baker Hughes Holdings LLC
17456243 ASSISTED COLLABORATIVE NAVIGATION IN SCREEN SHARE ENVIRONMENTS Non-Final OA International Business Machines Corporation
18497453 POWER-SPACE EFFICIENT PHOTONIC FOURIER CONVOLUTIONAL NEURAL NETWORK Non-Final OA HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
17952107 ARTIFICIAL INTELLIGENCE WORK CENTER Non-Final OA SAP SE
17587793 OPTIMIZATION OF TUNING FOR MODELS USED FOR MULTIPLE PREDICTION GENERATION Non-Final OA Databricks, Inc.
17030072 LEARNING MODEL GENERATION METHOD, RECORDING MEDIUM, EYEGLASS LENS SELECTION SUPPORT METHOD, AND EYEGLASS LENS SELECTION SUPPORT SYSTEM Final Rejection HOYA LENS THAILAND LTD.
18127551 ALLOCATING COMPUTING RESOURCES BETWEEN MODEL SIZE AND TRAINING DATA DURING TRAINING OF A MACHINE LEARNING MODEL Final Rejection DeepMind Technologies Limited

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Frequently Asked Questions

What is examiner David H Tan's allowance rate?

32.1% of resolved applications examined by David H Tan were allowed (109 resolved cases), compared with 26.4% across Art Unit 2141 over the last five years.

Does an interview help with examiner David H Tan?

This examiner's interview lift is +16.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner David H Tan take to allow a patent?

Applications allowed by David H Tan took 1,484 days on average from filing to allowance.

Which art unit does examiner David H Tan work in?

David H Tan examines applications in Art Unit 2141 in Tech Center 4100.

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