Prosecution Insights
Last updated: October 26, 2026

Charlene Bermudez, USPTO Patent Examiner

Listed by the USPTO as BERMUDEZ, CHARLENE

Tech Center 2800 • Art Units: 1721 2855

This examiner grants 37% of resolved cases

Analysis

Bermudez, Charlene handled 84 resolved cases in Tech Center 2800 and Art Unit 1721. The allowance rate was 36.9%, and the median time to allowance was 1477 days. Interview lift was 26.3%, indicating a positive association between interviews and allowance outcomes.

The leading companies were Contemporary Amperex Technology Co., Limited, LG Energy Solution Ltd., and Samsung SDI Co., Ltd. The principal firms were BIRCH STEWART KOLASCH & BIRCH, LLP, Bryan Cave Leighton Paisner LLP (DC), and Womble Bond Dickinson US LLP. The low allowance rate and long median timeline indicate substantial prosecution difficulty. Practitioners may benefit from early interviews supported by carefully bounded amendments and a clear explanation of the technical distinctions at issue.

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

Performance Statistics

36.9%
Allow Rate
-31.1% vs TC avg
115
Total Applications
+26.3%
Interview Lift
1477
Avg Prosecution Days
Based on 84 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
24.3%
§102 Novelty
56.2%
§103 Obviousness
17.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18562577 CONVEYING DEVICE FOR A FUEL CELL SYSTEM FOR CONVEYING AND/OR RECIRCULATING A GASEOUS MEDIUM, IN PARTICULAR HYDROGEN Non-Final OA Robert Bosch GmbH
18486595 CONTROLLED RELEASE OF ANTIOXIDANT FOR FUEL CELLS Non-Final OA Toyota Motor Engineering & Manufacturing North America, Inc.
18145749 SECONDARY BATTERY AND TERMINAL Final Rejection Huawei Technologies Co., Ltd.
17782724 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Non-Final OA PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
18281173 BATTERY PACK AND VEHICLE COMPRISING THE SAME Final Rejection LG ENERGY SOLUTION, LTD.
17788223 BUTTON-TYPE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME Final Rejection LG ENERGY SOLUTION, LTD.
18596091 THREE ELECTRODE CELL INCLUDING SOLID ELECTROLYTE Non-Final OA Schaeffler Technologies AG & Co. KG
17520010 BATTERY MODULE AND ELECTRIC DEVICE Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
18659632 BATTERY END COVER ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18532827 BATTERY, ELECTRICAL DEVICE, AND METHOD AND APPARATUS FOR MANUFACTURING BATTERY Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18339988 BATTERY MODULE Final Rejection Samsung SDI Co., Ltd.
18558865 Electrical Energy Storage Device Non-Final OA Mercedes-Benz Group AG
16980658 UNIT CELL AND METHOD FOR MANUFACTURING THE SAME Final Rejection LG CHEM, LTD.

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 Charlene Bermudez's allowance rate?

36.9% of resolved applications examined by Charlene Bermudez were allowed (84 resolved cases), compared with 40.6% across Art Unit 1721 over the last five years.

Does an interview help with examiner Charlene Bermudez?

This examiner's interview lift is +26.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Charlene Bermudez take to allow a patent?

Applications allowed by Charlene Bermudez took 1,477 days on average from filing to allowance.

Which art unit does examiner Charlene Bermudez work in?

Charlene Bermudez examines applications in Art Unit 1721 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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