Prosecution Insights
Last updated: October 26, 2026

Charles E Cooley, USPTO Patent Examiner

Listed by the USPTO as COOLEY, CHARLES E

Tech Center 3700 • Art Units: 1736 1774 1791 1797 3761 3762

This examiner grants 79% of resolved cases

Analysis

COOLEY, CHARLES E works in Tech Center 3700 and Art Unit 1736. The profile covers 1513 resolved cases, with a 79.0% allowance rate and a 1034-day median to allowance. Interviews are associated with a 15.3% lift in the allowance outcome, making interview preparation a relevant prosecution consideration for applications assigned to this examiner.

The listed company activity includes Alfa Laval Corporate AB, Gea Westfalia Separator Group GmbH, and MILWAUKEE ELECTRIC TOOL Corporation. Frequently listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, Patent Portfolio Builders, PLLC, and BakerHostetler. Applicants can use these prosecution patterns to plan claim presentation, interview timing, and response strategy.

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

Performance Statistics

79.0%
Allow Rate
+9.0% vs TC avg
1,573
Total Applications
+15.3%
Interview Lift
1034
Avg Prosecution Days
Based on 1513 resolved cases, 2023–2026

Rejection Statute Breakdown

0.8%
§101 Eligibility
26.7%
§102 Novelty
33.1%
§103 Obviousness
29.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17861923 CONCRETE VIBRATOR Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18648511 IMPELLER ASSEMBLY AND BATTERY SLURRY MIXING AND STIRRING EQUIPMENT HAVING SAME Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
17773393 PROTECTION DEVICE FOR AN AGITATOR SHAFT OF AN AGITATOR Final Rejection BASF Coatings GmbH
18714995 A CENTRIFUGAL SEPARATOR AND AN INTERFACE LEVEL SENSOR Non-Final OA Alfa Laval Corporate AB
18691321 A CENTRIFUGAL SEPARATOR HAVING A HERMETIC INLET AND OUTLET Non-Final OA ALFA LAVAL CORPORATE AB
18286423 MODULAR CENTRIFUGAL SEPARATOR SYSTEM AND EXCHANGEABLE SEPARATION INSERT Non-Final OA Alfa Laval Corporate AB

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Frequently Asked Questions

What is examiner Charles E Cooley's allowance rate?

79.0% of resolved applications examined by Charles E Cooley were allowed (1,513 resolved cases), compared with 62.6% across Art Unit 1736 over the last five years.

Does an interview help with examiner Charles E Cooley?

This examiner's interview lift is +15.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Charles E Cooley take to allow a patent?

Applications allowed by Charles E Cooley took 1,034 days on average from filing to allowance.

Which art unit does examiner Charles E Cooley work in?

Charles E Cooley examines applications in Art Unit 1736 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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