Prosecution Insights
Last updated: October 27, 2026

Bartholomew Andrew Hornsby, USPTO Patent Examiner

Listed by the USPTO as HORNSBY, BARTHOLOMEW ANDREW

Tech Center 4100 • Art Units: 1728 4100

This examiner grants 75% of resolved cases

Analysis

HORNSBY, BARTHOLOMEW ANDREW is assigned to Tech Center 4100 and Art Unit 1728. The profile records 186 resolved cases, a 74.7% allowance rate, and a median of 1101 days to allowance. The 20.0% interview lift indicates a higher allowance outcome for cases involving interviews in this dataset.

LG Energy Solution Ltd., Samsung SDI Co., Ltd., and Eve Power Co., Ltd. are the listed companies. The listed firms are SUGHRUE MION, PLLC, Womble Bond Dickinson US LLP, and Bryan Cave Leighton Paisner LLP (DC). The statistics support preparing a focused interview when it can address the specific reasons for refusal. The allowance rate and median timing also support disciplined claim management and early communication about the expected course of prosecution.

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

Performance Statistics

74.7%
Allow Rate
+14.7% vs TC avg
231
Total Applications
+20.0%
Interview Lift
1101
Avg Prosecution Days
Based on 186 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
19.5%
§102 Novelty
60.3%
§103 Obviousness
17.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18339448 LITHIUM BATTERY Non-Final OA Samsung Electronics Co., Ltd.
18049047 ELECTRICAL CONNECTION MEANS FOR CONNECTING TERMINALS OF BATTERY UNITS IN BATTERY PACK Final Rejection TECHTRONIC CORDLESS GP
18729011 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Non-Final OA Panasonic Energy Co., Ltd.
18726742 SECONDARY BATTERY Non-Final OA LG ENERGY SOLUTION, LTD.
17800085 LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME Non-Final OA LG Energy Solution, Ltd.
17800121 Electrode Lead, Method For Manufacturing The Same And Pouch Type Secondary Battery Non-Final OA LG Energy Solution, Ltd.
18083596 BATTERY COVER ASSEMBLY AND CYLINDRICAL BATTERY Non-Final OA EVE POWER CO., LTD.
18084493 CAP ASSEMBLY OF BATTERY, CYLINDRICAL BATTERY, AND BATTERY PACK Non-Final OA EVE POWER CO., LTD.
18618431 ENERGY STORAGE CONTAINER, AND METHOD AND APPARATUS FOR PRODUCING ENERGY STORAGE CONTAINER Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18017191 METHOD FOR FABRICATING SECONDARY BATTERY AND MANUFACTURING APPARATUS FOR SECONDARY BATTERY Final Rejection Semiconductor Energy Laboratory Co., Ltd.
18726992 POSITIVE ELECTRODE FOR SOLID-STATE SECONDARY BATTERY AND SOLID-STATE SECONDARY BATTERY INCLUDING THE SAME Non-Final OA SAMSUNG SDI CO., LTD.
18611163 BATTERY PACK Non-Final OA Samsung SDI Co., Ltd.
17975382 CYLINDRICAL SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Samsung SDI Co., Ltd.
18624546 FIRE AND EXPLOSION PROTECTION SYSTEM FOR BATTERY PACK Non-Final OA Carrier Corporation
18027137 Separator for Lead Acid Storage Batteries, and Lead Acid Storage Battery Final Rejection Asahi Kasei Kabushiki Kaisha
18015167 ADHESIVE FILM FOR METAL TERMINALS, METAL TERMINAL WITH ADHESIVE FILM FOR METAL TERMINALS, POWER STORAGE DEVICE USING SAID ADHESIVE FILM FOR METAL TERMINALS, AND METHOD FOR MANUFACTURING POWER STORAGE DEVICE Final Rejection DAI NIPPON PRINTING CO., LTD.
17613893 POWER BATTERY PACK AND VEHICLE Final Rejection BYD COMPANY LIMITED
18684122 SINTERED MANGANESE SPINEL BATTERY ELECTRODES Non-Final OA University of Virginia Patent Foundation
18296374 Negative Electrode and Non-Aqueous Electrolyte Secondary Battery Final Rejection Prime Planet Energy & Solutions, Inc.
18329574 STORAGE BATTERY CONNECTION MODULE, WIRE HARNESS, AND POWER STORAGE SYSTEM Final Rejection YAZAKI CORPORATION
18264646 FLASH RECYCLING OF BATTERIES Non-Final OA William Marsh Rice University
17005609 GRAPHENE-PROTECTED LITHIOPHILIC OR NATHIOPHILIC METAL ANODE FOR AN ALKALI METAL BATTERY Non-Final OA Global Graphene Group, Inc.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Bartholomew Andrew Hornsby's allowance rate?

74.7% of resolved applications examined by Bartholomew Andrew Hornsby were allowed (186 resolved cases), compared with 65.5% across Art Unit 1728 over the last five years.

Does an interview help with examiner Bartholomew Andrew Hornsby?

This examiner's interview lift is +20.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Bartholomew Andrew Hornsby take to allow a patent?

Applications allowed by Bartholomew Andrew Hornsby took 1,101 days on average from filing to allowance.

Which art unit does examiner Bartholomew Andrew Hornsby work in?

Bartholomew Andrew Hornsby examines applications in Art Unit 1728 in Tech Center 4100.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month