Prosecution Insights
Last updated: October 27, 2026

Esther Jiesi Tan, USPTO Patent Examiner

Listed by the USPTO as TAN, ESTHER JIESI

Tech Center 4100 • Art Units: 1725 1751 4100

This examiner grants 0% of resolved cases

Performance Statistics

—
Allow Rate
-60.0% vs TC avg
40
Total Applications
—
Interview Lift
0
Avg Prosecution Days
Based on 0 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
22.0%
§102 Novelty
52.8%
§103 Obviousness
23.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18262240 Fuel Cell Gas Diffusion Layers Non-Final OA Robert Bosch GmbH
18710809 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Non-Final OA Panasonic Energy Co., Ltd.
18312744 COOLING SYSTEM FOR ONE OR MORE BATTERY CELLS OF AN ELECTRIC BATTERY Final Rejection VOLVO TRUCK CORPORATION
18290931 ANODE COMPOSITION, ANODE COMPRISING SAME FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY COMPRISING ANODE, AND METHOD FOR PREPARING ANODE COMPOSITION Non-Final OA LG ENERGY SOLUTION, LTD.
18469915 BATTERY PACK Non-Final OA Nanjing Chervon Industry Co., Ltd.
18231010 ALL-SOLID-STATE BATTERY HAVING UNIFORM INTERFACES BETWEEN ELECTRODES AND SOLID ELECTROLYTE LAYER Final Rejection Kia Corporation
18312368 CATHODE ACTIVE MATERIAL FOR ALL-SOLID-STATE BATTERY WITH CONTROLLED PARTICLE SIZE AND PREPARATION METHOD THEREOF Final Rejection Kia Corporation
18592859 BATTERY CELL, BATTERY, POWER CONSUMING APPARATUS, AND MANUFACTURING METHOD AND APPARATUS FOR BATTERY CELL Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18610151 NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME Non-Final OA SAMSUNG SDI CO., LTD.
18557499 RECIRCULATION GAS FLOW CONTROL AND DISTRIBUTION MODULE FOR FUEL CELLS Non-Final OA Eaton Intelligent Power Limited
18318209 ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME Final Rejection SK ON CO., LTD.
18313380 BATTERY CELL AND METHOD OF MANUFACTURING THE SAME Final Rejection SK ON CO., LTD.
18473996 LITHIUM ION BATTERY AND POWERED VEHICLE Final Rejection BYD COMPANY LIMITED
18313375 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Final Rejection Prime Planet Energy & Solutions, Inc.
18520655 LAYERED DOUBLE HYDROXIDE, METHOD FOR PRODUCING LAYERED DOUBLE HYDROXIDE, AIR ELECTRODE, AND METAL-AIR SECONDARY BATTERY Non-Final OA NGK INSULATORS, LTD.
18667479 HIGH-POWER ALL-SOLID-STATE BATTERY CELL WITH SULFIDE SOLID ELECTROLYTE AND SILICON ANODE ELECTRODE Non-Final OA GM GLOBAL TECHNOLOGY OPERATIONS LLC
17949524 ELECTRODE SHEET AND ELECTRODE SHEET ASSEMBLY Non-Final OA Hithium Tech HK Limited
18575946 Positive Electrode Current Collector Coated With Adhesion Enhancement Layer and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Comprising the Same Non-Final OA LG Chem, Ltd.
18394374 ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS Non-Final OA Ningde Amperex Technology Limited
18697435 MULTILAYER SOLID ELECTROLYTE AND BATTERIES COMPRISING THEM Non-Final OA FUNDACIÓN CENTRO DE INVESTIGACIÓN COOPERATIVA DE ENERGÍAS ALTERNATIVAS CIC ENERGIGUNE FUNDAZIOA
18359714 SEPARATOR PLATE FOR AN ELECTROCHEMICAL SYSTEM Final Rejection Reinz-Dichtungs-GmbH

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Frequently Asked Questions

Which art unit does examiner Esther Jiesi Tan work in?

Esther Jiesi Tan examines applications in Art Unit 1725 in Tech Center 4100.

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