Prosecution Insights
Last updated: October 26, 2026

Charles Logsdon, USPTO Patent Examiner

Listed by the USPTO as LOGSDON, CHARLES

Tech Center 1600 • Art Units: 1662

This examiner grants 72% of resolved cases

Analysis

LOGSDON, CHARLES handles applications in Tech Center 1600 and Art Unit 1662. The record includes 548 resolved cases, a 71.9% allowance rate, and a median of 1050 days to allowance. Interview lift is 11.0%, showing a positive association that is modest relative to the overall allowance result.

The listed companies are Monsanto Technology LLC, Pioneer Hi-bred International Inc., and Fujifilm Corporation. Arnold & Porter Kaye Scholer LLP, BakerHostetler, and DENTONS US LLP are the associated firms. The allowance rate supports a generally favorable outlook, but the median timing indicates that applicants should still plan for sustained prosecution rather than assume rapid resolution.

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

Performance Statistics

71.9%
Allow Rate
+11.9% vs TC avg
566
Total Applications
+11.0%
Interview Lift
1050
Avg Prosecution Days
Based on 548 resolved cases, 2023–2026

Rejection Statute Breakdown

7.7%
§101 Eligibility
14.6%
§102 Novelty
30.1%
§103 Obviousness
37.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18315503 TOMATO PLANT, TOMATO FRUIT, AND METHOD OF CULTIVATING TOMATO PLANT Final Rejection FUJIFILM CORPORATION

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Frequently Asked Questions

What is examiner Charles Logsdon's allowance rate?

71.9% of resolved applications examined by Charles Logsdon were allowed (548 resolved cases), compared with 63.0% across Art Unit 1662 over the last five years.

Does an interview help with examiner Charles Logsdon?

This examiner's interview lift is +11.0 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 Logsdon take to allow a patent?

Applications allowed by Charles Logsdon took 1,050 days on average from filing to allowance.

Which art unit does examiner Charles Logsdon work in?

Charles Logsdon examines applications in Art Unit 1662 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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