Prosecution Insights
Last updated: October 12, 2026

Keith D Walker, USPTO Patent Examiner

Listed by the USPTO as WALKER, KEITH D

Tech Center 1700 • Art Units: 1722 1726 1735 1738 1795

This examiner grants 35% of resolved cases

Performance Statistics

35.1%
Allow Rate
-29.9% vs TC avg
356
Total Applications
+23.5%
Interview Lift
1680
Avg Prosecution Days
Based on 345 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
17.8%
§102 Novelty
55.1%
§103 Obviousness
21.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18086247 Positive Electrode Slurry Composition, Positive Electrode and Lithium Secondary Battery Manufactured Using the Same Final Rejection LG Energy Solution, Ltd.
18203505 SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL Non-Final OA MURATA MANUFACTURING CO., LTD.
18468777 STORAGE METHOD Final Rejection ISUZU MOTORS LIMITED

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Frequently Asked Questions

What is examiner Keith D Walker's allowance rate?

35.1% of resolved applications examined by Keith D Walker were allowed (345 resolved cases), compared with 60.5% across Art Unit 1722 over the last five years.

Does an interview help with examiner Keith D Walker?

This examiner's interview lift is +23.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Keith D Walker take to allow a patent?

Applications allowed by Keith D Walker took 1,680 days on average from filing to allowance.

Which art unit does examiner Keith D Walker work in?

Keith D Walker examines applications in Art Unit 1722 in Tech Center 1700 (Chemistry & Materials).

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