Prosecution Insights
Last updated: October 26, 2026

Douglas Kay, USPTO Patent Examiner

Listed by the USPTO as KAY, DOUGLAS

Tech Center 4100 • Art Units: 2857 2865 4100

This examiner grants 63% of resolved cases

Analysis

Douglas Kay is assigned to tech center 4100 and art unit 2857, with 386 resolved cases. The allowance rate is 63.0%, and the median time to allowance is 1247 days. Interview lift is 28.9%, indicating a favorable association that may support using interviews to address outstanding claim issues.

The principal companies are Halliburton Energy Services Inc., NEC Corporation, and Panasonic Holdings Corporation. The principal firms are BALLARD SPAHR LLP, Bayramoglu Law Offices LLC, and C. Tumey Law Group PLLC - HES. Applicants may combine interview preparation with written amendments that keep the path to allowance organized.

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

Performance Statistics

63.0%
Allow Rate
+3.0% vs TC avg
417
Total Applications
+28.9%
Interview Lift
1247
Avg Prosecution Days
Based on 386 resolved cases, 2023–2026

Rejection Statute Breakdown

28.0%
§101 Eligibility
5.3%
§102 Novelty
36.7%
§103 Obviousness
24.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17360423 Annulus Velocity Independent Time Domain Structure Imaging In Cased Holes Using Multi-Offset Secondary Flexural Wave Data Final Rejection Halliburton Energy Services, Inc.
18630083 MONITORING SYSTEM, MONITORING APPARATUS, AND MONITORING METHOD Non-Final OA NEC Corporation
18721151 BATTERY ABNORMALITY DETECTION SYSTEM, BATTERY ABNORMALITY DETECTION METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18265725 Battery Monitoring Apparatus and Method Non-Final OA LG Energy Solution, Ltd.
18680577 METHOD FOR INSPECTING A POWERPLANT COMPONENT Non-Final OA RTX Corporation
18712560 METHODS OF DETERMINING A MECHANICAL PROPERTY OF A LAYER APPLIED TO A SUBSTRATE, AND ASSOCIATED DEVICES Non-Final OA ASML NETHERLANDS B.V.
18680494 ISOLATION RESISTANCE MONITORING SYSTEM Non-Final OA GM Global Technology Operations LLC

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Frequently Asked Questions

What is examiner Douglas Kay's allowance rate?

63.0% of resolved applications examined by Douglas Kay were allowed (386 resolved cases), compared with 72.0% across Art Unit 2857 over the last five years.

Does an interview help with examiner Douglas Kay?

This examiner's interview lift is +28.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Douglas Kay take to allow a patent?

Applications allowed by Douglas Kay took 1,247 days on average from filing to allowance.

Which art unit does examiner Douglas Kay work in?

Douglas Kay examines applications in Art Unit 2857 in Tech Center 4100.

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