Prosecution Insights
Last updated: October 25, 2026

Eric S Keasel, USPTO Patent Examiner

Listed by the USPTO as KEASEL, ERIC S

Tech Center 3700 • Art Units: 3753 3761

This examiner grants 80% of resolved cases

Analysis

Eric S. Keasel is assigned to tech center 3700 and art unit 3753, with 588 resolved cases. The allowance rate is 79.8%, and the median time to allowance is 927 days. Interview lift is 14.6%, indicating a favorable association between interviews and allowance outcomes.

The principal companies are Bayerische Motoren Werke Aktiengesellschaft, Vulcan Industrial Holdings LLC, and Fujikoki Corporation. The principal firms are AVEK IP, LLC (OP Orig), Cantor Colburn LLP - Collins Aerospace, and CROWELL & MORING LLP. The data supports focused interviews and written responses in a record with a high allowance rate and moderate timing.

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

Performance Statistics

79.8%
Allow Rate
+9.8% vs TC avg
598
Total Applications
+14.6%
Interview Lift
927
Avg Prosecution Days
Based on 588 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
17.4%
§102 Novelty
36.2%
§103 Obviousness
39.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18539014 SYSTEMS, ASSEMBLIES, APPARATUSES, AND METHODS PROVIDING ENHANCED ENGAGEMENT BETWEEN VALVE BODIES AND VALVE SEALS Final Rejection Vulcan Industrial Holdings, LLC
18466372 VALVE HEATING ARRANGEMENT Non-Final OA Goodrich Corporation
19081860 GAS VALVE ASSEMBLY Non-Final OA Planet Safety System Technologies LLC
18915152 SYSTEMS AND APPARATUS FOR CONTROLLING FLUID FLOW Non-Final OA Ichor Systems, Inc.
18878976 ACTUATOR FOR OPENING/CLOSING VALVE Non-Final OA BSC CO., LTD
18807537 PULSED PRESSURE CONTROL SYSTEM (METHOD) Non-Final OA KOGE MICRO TECH CO., LTD.

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Frequently Asked Questions

What is examiner Eric S Keasel's allowance rate?

79.8% of resolved applications examined by Eric S Keasel were allowed (588 resolved cases), compared with 65.5% across Art Unit 3753 over the last five years.

Does an interview help with examiner Eric S Keasel?

This examiner's interview lift is +14.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Eric S Keasel take to allow a patent?

Applications allowed by Eric S Keasel took 927 days on average from filing to allowance.

Which art unit does examiner Eric S Keasel work in?

Eric S Keasel examines applications in Art Unit 3753 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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