Prosecution Insights
Last updated: October 27, 2026

Nathanael T Zemui, USPTO Patent Examiner

Listed by the USPTO as ZEMUI, NATHANAEL T

Tech Center 1700 • Art Units: 1723 1725 1727

This examiner grants 56% of resolved cases

Analysis

ZEMUI, NATHANAEL T is a USPTO patent examiner in tech center 1700 and art unit 1723. The profile records 484 resolved cases, a 55.6% allowance rate, and a median of 1336 days to allowance. The allowance figure shows that more than half of recorded resolved cases reached allowance, while the pendency figure indicates an extended timeline.

The interview lift is 23.7%, indicating a positive association between interviews and allowance outcomes. LG Energy Solution Ltd., Panasonic Holdings Corporation, and Contemporary Amperex Technology Co., Limited are the listed companies. The listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, HARNESS DICKEY (DETROIT), and Rimon PC - Panasonic Corporation. Practitioners can use these recurring relationships when evaluating matters in art unit 1723.

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

Performance Statistics

55.6%
Allow Rate
-9.4% vs TC avg
558
Total Applications
+23.7%
Interview Lift
1336
Avg Prosecution Days
Based on 484 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
17.7%
§102 Novelty
65.9%
§103 Obviousness
14.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18180129 INORGANIC SOLID ELECTROLYTE-CONTAINING COMPOSITION, SHEET FOR ALL-SOLID STATE SECONDARY BATTERY, AND ALL-SOLID STATE SECONDARY BATTERY, AND MANUFACTURING METHODS FOR SHEET FOR ALL-SOLID STATE SECONDARY BATTERY AND ALL-SOLID STATE SECONDARY BATTERY Non-Final OA FUJIFILM Corporation
18200258 MANUFACTURING DEVICE FOR ASSEMBLED BATTERY Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18332280 ELECTROCHEMICAL DEVICE Non-Final OA TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
18720834 POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES, AND SECONDARY BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18406080 BATTERY AND METHOD FOR PRODUCING THE SAME Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
17659774 MAGNESIUM SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SOLUTION FOR MAGNESIUM SECONDARY BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18777235 BATTERY Non-Final OA Panasonic Holdings Corporation
18572855 COLLECTOR PLATE AND POWER STORAGE DEVICE USING SAME Non-Final OA Panasonic Energy Co., Ltd.
19332345 Positive Electrode and Lithium Secondary Battery Including the Same Final Rejection LG Energy Solution, Ltd.
18835095 Electrolyte Solution Additive for Lithium Secondary Battery and Non-Aqueous Electrolyte Solution for Lithium Secondary Battery Including the Same and Lithium Secondary Battery Non-Final OA LG Energy Solution, Ltd.
18672751 SULFUR-CARBON COMPOSITE, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME Non-Final OA LG ENERGY SOLUTION, LTD.
17780642 Positive Electrode Optimized for Improving High-Temperature Life Characteristics and Secondary Battery Comprising the Same Non-Final OA LG Energy Solution, Ltd.
17774588 Battery Module and Battery Pack Including the Same Final Rejection LG Energy Solution, Ltd.
17772644 Crosslinked Separator for Lithium Secondary Battery Including Crosslinked Polyolefin and Method for Manufacturing the Same Final Rejection LG Energy Solution, Ltd.
19434362 PROCESSING AID FOR ELECTRODE FABRICATION Non-Final OA ARKEMA INC.
18422000 SECONDARY BATTERY AND SECONDARY BATTERY MODULE Non-Final OA HONDA MOTOR CO., LTD.
18185398 APPARATUS FOR MANUFACTURING ALL-SOLID-STATE BATTERY Final Rejection HONDA MOTOR CO., LTD.
18531936 ELECTRIC WORK VEHICLE Non-Final OA KUBOTA CORPORATION
18362258 BATTERY PACK DEVICE FOR VEHICLE Non-Final OA Kia Corporation
18079445 SOLID ELECTROLYTE FREE-STANDING MEMBRANE FOR ALL-SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREOF Non-Final OA KIA CORPORATION
18512056 Secondary Battery, Battery Module, Battery Pack and Electrical Device Final Rejection CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
18180831 POSITIVE ELECTRODE ACTIVE MATERIAL AND RELATED ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND APPARATUS THEREOF Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
19237007 POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE SHEET, SECONDARY BATTERY, AND ELECTRIC DEVICE Final Rejection CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18637433 BATTERY AND POWER CONSUMING DEVICE Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
17727300 POSITIVE ELECTRODE ACTIVE MATERIAL AND MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIAL Non-Final OA SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
18760755 SOLID-STATE LITHIUM-ION CONDUCTOR AND METHODS OF MANUFACTURE THEREOF Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
19368893 NICKEL-BASED LITHIUM METAL COMPOSITE OXIDE, PREPARING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE INCLUDING THE SAME Final Rejection SAMSUNG SDI CO., LTD.
17446044 ALL-SOLID SECONDARY BATTERY Final Rejection Samsung SDI Co., Ltd.
18791460 CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME Non-Final OA SK ON CO., LTD.
18681682 BATTERY Non-Final OA Maxell, Ltd.

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Frequently Asked Questions

What is examiner Nathanael T Zemui's allowance rate?

55.6% of resolved applications examined by Nathanael T Zemui were allowed (484 resolved cases), compared with 60.0% across Art Unit 1723 over the last five years.

Does an interview help with examiner Nathanael T Zemui?

This examiner's interview lift is +23.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Nathanael T Zemui take to allow a patent?

Applications allowed by Nathanael T Zemui took 1,336 days on average from filing to allowance.

Which art unit does examiner Nathanael T Zemui work in?

Nathanael T Zemui examines applications in Art Unit 1723 in Tech Center 1700 (Chemistry & Materials).

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