Prosecution Insights
Last updated: October 01, 2026

Examiner: HORNSBY, BARTHOLOMEW ANDREW

Tech Center 4100 • Art Units: 1728 4100

This examiner grants 74% of resolved cases

Analysis

Bartholomew Andrew Hornsby serves in Tech Center 4100 and Art Unit 1728. The examiner has 184 resolved cases. The data indicates an allowance rate of 74.5 percent. This figure serves as a primary metric for assessing the probability of success. The median days to allowance is 1098. This duration represents the time required to reach a grant. Applicants should account for this timeframe when planning their patent strategy.

The interview lift for Hornsby is 20.7 percent. This percentage shows that interviews are an effective tool for advancing applications. The 20.7 percent interview lift is lower than the 74.5 percent allowance rate. For the 184 resolved cases, the median days to allowance of 1098 provides a clear expectation for the prosecution lifecycle. In Art Unit 1728, the interview lift suggests that direct engagement is a beneficial approach. This data offers a baseline for practitioners in Tech Center 4100.

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

Performance Statistics

74.5%
Allow Rate
+14.5% vs TC avg
220
Total Applications
+20.7%
Interview Lift
1098
Avg Prosecution Days
Based on 184 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
18.9%
§102 Novelty
61.7%
§103 Obviousness
16.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18339448 LITHIUM BATTERY Non-Final OA Samsung Electronics Co., Ltd.
18083596 BATTERY COVER ASSEMBLY AND CYLINDRICAL BATTERY Non-Final OA EVE POWER CO., 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.
18017191 METHOD FOR FABRICATING SECONDARY BATTERY AND MANUFACTURING APPARATUS FOR SECONDARY BATTERY Final Rejection Semiconductor Energy Laboratory Co., Ltd.
18611163 BATTERY PACK Non-Final OA Samsung SDI Co., Ltd.
18163139 CYLINDRICAL SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
17975382 CYLINDRICAL SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Samsung SDI Co., Ltd.
18618431 ENERGY STORAGE CONTAINER, AND METHOD AND APPARATUS FOR PRODUCING ENERGY STORAGE CONTAINER Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18332749 POUCH-TYPE SECONDARY BATTERY INCLUDING FIRE EXTINGUISHING DEVICE Final Rejection SK On Co., Ltd.
18624546 FIRE AND EXPLOSION PROTECTION SYSTEM FOR BATTERY PACK Non-Final OA Carrier Corporation
18332825 VEHICLE BATTERY PACK INCLUDING A THERMAL MANAGEMENT ASSEMBLY Final Rejection Ford Global Technologies, LLC
18049047 ELECTRICAL CONNECTION MEANS FOR CONNECTING TERMINALS OF BATTERY UNITS IN BATTERY PACK Final Rejection TECHTRONIC CORDLESS GP
17613893 POWER BATTERY PACK AND VEHICLE Final Rejection BYD COMPANY LIMITED
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.
18296374 Negative Electrode and Non-Aqueous Electrolyte Secondary Battery Final Rejection Prime Planet Energy & Solutions, Inc.
18264646 FLASH RECYCLING OF BATTERIES Non-Final OA William Marsh Rice University
18329574 STORAGE BATTERY CONNECTION MODULE, WIRE HARNESS, AND POWER STORAGE SYSTEM Final Rejection YAZAKI CORPORATION
17924186 ENERGY STORAGE DEVICE Final Rejection GS Yuasa International Ltd.
18608447 Lithium Metal Oxide Based Cathode Chemistries for Lithium Batteries Non-Final OA Nissan North America, Inc.
18684835 COMPOSITE PARTICLES, ELECTRODE FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE Non-Final OA ZEON CORPORATION
18268515 POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY Final Rejection POSCO CHEMICAL CO., LTD
17005609 GRAPHENE-PROTECTED LITHIOPHILIC OR NATHIOPHILIC METAL ANODE FOR AN ALKALI METAL BATTERY Non-Final OA Global Graphene Group, Inc.

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