Prosecution Insights
Last updated: October 27, 2026

Karen Joyce Armstrong, USPTO Patent Examiner

Listed by the USPTO as ARMSTRONG, KAREN JOYCE

Tech Center 1700 • Art Units: 1700 1726

This examiner grants 67% of resolved cases

Analysis

ARMSTRONG, KAREN JOYCE examines in tech center 1700 and art unit 1700. The record includes 36 resolved cases, a 66.7% allowance rate, an 11.1% interview lift, and a median of 1313 days to allowance. Because the resolved-case total is limited, the figures provide useful directional information but should be considered with the size of the underlying record in mind.

The principal companies listed are LG Energy Solution Ltd., BYD Company Limited, and Toyota Motor Corporation. The listed firms are Calfee, Halter & Griswold LLP, Barron & Young PLLC, and BIRCH STEWART KOLASCH & BIRCH, LLP. Practitioners handling matters in this art unit can use the profile to frame expectations about allowance, while allowing for a prosecution period that may extend well beyond initial examination activity.

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

Performance Statistics

66.7%
Allow Rate
+1.7% vs TC avg
99
Total Applications
+11.1%
Interview Lift
1313
Avg Prosecution Days
Based on 36 resolved cases, 2023–2026

Rejection Statute Breakdown

1.9%
§101 Eligibility
23.2%
§102 Novelty
62.0%
§103 Obviousness
11.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18062846 THERMOELECTRIC GENERATOR IN A BATTERY PACK Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18470533 ENERGY STORAGE DEVICE HAVING CELL WITH COATING Non-Final OA DEERE & COMPANY
18004853 BATTERY WELD PLATES Final Rejection TECHTRONIC CORDLESS GP
18068553 COATING LIQUID, COMPOSITE PARTICLE MANUFACTURING METHOD, AND COMPOSITE PARTICLE Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
17981017 ELECTRODE, SECONDARY BATTERY, AND ELECTRODE MANUFACTURING METHOD Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
17854236 SILICON-BASED NEGATIVE ELECTRODE MATERIAL AND METHOD FOR PREPARING SAME, BATTERY, AND TERMINAL Final Rejection HUAWEI TECHNOLOGIES CO., LTD.
17910094 ELECTRODE FOR BATTERIES, AND BATTERY Final Rejection PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
18025728 Positive Electrode Active Material for Lithium Secondary Battery, Method for Preparing the Same and Lithium Secondary Battery Comprising the Same Final Rejection LG Energy Solution, Ltd.
17918104 LITHIUM-SULFUR SECONDARY BATTERY COMPRISING ELECTROLYTE CONTAINING S-O-BASED CYCLIC COMPOUND Final Rejection LG ENERGY SOLUTION, LTD.
17800720 Positive Electrode for Lithium Secondary Battery with Primer Layer Comprising Lithium Iron Phosphate Non-Final OA LG Energy Solution, Ltd.
17783691 Battery Management System, Battery Pack, Electric Vehicle and Battery Management Method Final Rejection LG Energy Solution, Ltd.
17860101 BATTERY DEVICE AND USE THEREOF IN A MOTOR VEHICLE Final Rejection Mahle International GmbH
18427211 APPARATUS FOR MANUFACTURING SHAPE-CHANGED MEMBRANE-ELECTRODE ASSEMBLY Non-Final OA KIA CORPORATION
18567659 ELASTOMERIC ELECTROLYTE FOR HIGH-ENERGY ALL-SOLID-STATE METAL BATTERIES Non-Final OA KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
18083622 POSITIVE ELECTRODE, SECONDARY BATTERY, AND ELECTRONIC DEVICE Non-Final OA SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
17912452 ALL-SOLID-STATE BATTERY COMPRISING SILICON (SI) AS ANODE ACTIVE MATERIAL Final Rejection THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18524030 NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME Non-Final OA SAMSUNG SDI CO,LTD.
18102182 SECONDARY BATTERY Final Rejection SAMSUNG SDI CO., LTD.
17798717 METHOD FOR MANUFACTURING A BATTERY, AND CORRESPONDING MANUFACTURING DEVICE Non-Final OA AUDI AG
17898661 ANODE CURRENT COLLECTOR INCLUDING POROUS PLATING LAYER, AND ANODE FOR LITHIUM SECONDARY BATTERY INCLUDING SAME Final Rejection SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
17988023 BATTERY, BATTERY PACK, AND VEHICLE Final Rejection BYD COMPANY LIMITED
17800664 CELL ARRAY, BATTERY PACK, AND VEHICLE Non-Final OA BYD COMPANY LIMITED
18431037 ANODE SUB-SYSTEM LAYOUT FOR SINGLE VALVE FREEZE PURGE CAPABILITY Non-Final OA GM Global Technology Operations LLC
18558089 SILICON-BASED NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF Non-Final OA Tianmulake Excellent Anode Materials Co, Ltd.

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Frequently Asked Questions

What is examiner Karen Joyce Armstrong's allowance rate?

66.7% of resolved applications examined by Karen Joyce Armstrong were allowed (36 resolved cases), compared with 40.4% across Art Unit 1700 over the last five years.

Does an interview help with examiner Karen Joyce Armstrong?

This examiner's interview lift is +11.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Karen Joyce Armstrong take to allow a patent?

Applications allowed by Karen Joyce Armstrong took 1,313 days on average from filing to allowance.

Which art unit does examiner Karen Joyce Armstrong work in?

Karen Joyce Armstrong examines applications in Art Unit 1700 in Tech Center 1700 (Chemistry & Materials).

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