Prosecution Insights
Last updated: October 22, 2026

Hannah Elizabeth Ketcham, USPTO Patent Examiner

Listed by the USPTO as KETCHAM, HANNAH ELIZABETH

Tech Center 4100 • Art Units: 1692 1742 4100

This examiner grants 0% of resolved cases

Performance Statistics

—
Allow Rate
-60.0% vs TC avg
19
Total Applications
—
Interview Lift
0
Avg Prosecution Days
Based on 0 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
27.0%
§102 Novelty
46.0%
§103 Obviousness
21.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18393154 BASE METAL ISOMERIZATION CATALYSTS Final Rejection EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
18399511 PROCESS FOR PREPARING FLUID CATALYTIC CRACKING CATALYSTS, FLUID CATALYTIC CRACKING CATALYSTS AND USES THEREOF Non-Final OA PETROLEO BRASILEIRO S.A. - PETROBRAS
18534331 PHOTOCATALYST COATING LIQUID Final Rejection SHARP KABUSHIKI KAISHA
18841579 etal catalysts in tandem with carbon-based catalysts for CO2 conversion to carbon-based molecules Non-Final OA The Board of Trustees of the Leland Stanford Junior University
18682704 LOW-TEMPERATURE NITROGEN OXIDE ADSORBER BASED ON METAL OXIDE-SUPPORTED PLATINUM/GAMMA-ALUMINA CATALYST AND METHOD FOR PREPARING SAME Non-Final OA KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

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

Which art unit does examiner Hannah Elizabeth Ketcham work in?

Hannah Elizabeth Ketcham examines applications in Art Unit 1692 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