Prosecution Insights
Last updated: October 25, 2026

Keith Campbell, USPTO Patent Examiner

Listed by the USPTO as CAMPBELL, KEITH

Tech Center 3600 • Art Units: 3651

This examiner grants 90% of resolved cases

Analysis

CAMPBELL, KEITH is assigned to tech center 3600 and art unit 3651. The profile records 603 resolved cases, an 89.7% allowance rate, and a 0.9% interview lift. The median days to allowance are 574.

The listed companies are Krones AG, Ats Corporation, and Jls Automation. The listed firms are BARLEY SNYDER, CAESAR RIVISE, PC, and Gowling WLG (Canada) LLP. The strong allowance rate and short median timing are the central planning signals. The minimal interview lift suggests that interviews should be selected for case-specific value rather than assumed to materially change the outcome.

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

Performance Statistics

89.7%
Allow Rate
+37.7% vs TC avg
614
Total Applications
+0.9%
Interview Lift
574
Avg Prosecution Days
Based on 603 resolved cases, 2023–2026

Rejection Statute Breakdown

3.6%
§101 Eligibility
25.2%
§102 Novelty
33.9%
§103 Obviousness
35.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18983675 DAMPING ELEMENT Non-Final OA KRONES AG
19095814 LINEAR MOTOR CONVEYOR SYSTEM AND MOVING ELEMENTS THEREFOR INCLUDING A BEARING SUSPENSION Non-Final OA ATS Corporation
19042099 DRAFT HANDLER SYSTEM Non-Final OA JLS Automation
18994788 CONVEYING DEVICE FOR CONVEYING MATERIAL Non-Final OA ONEJOON GMBH
18411824 BELT CONVEYOR BRAKE SYSTEMS AND CONTROLLERS Non-Final OA Intelligrated Headquarters, LLC
18589409 CONVEYOR STATIONS FOR EMPTYING DEBRIS COLLECTING ROBOTS Non-Final OA ViaBot Inc.

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Frequently Asked Questions

What is examiner Keith Campbell's allowance rate?

89.7% of resolved applications examined by Keith Campbell were allowed (603 resolved cases), compared with 65.4% across Art Unit 3651 over the last five years.

Does an interview help with examiner Keith Campbell?

This examiner's interview lift is +0.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Keith Campbell take to allow a patent?

Applications allowed by Keith Campbell took 574 days on average from filing to allowance.

Which art unit does examiner Keith Campbell work in?

Keith Campbell examines applications in Art Unit 3651 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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