Prosecution Insights
Last updated: October 02, 2026

Examiner: BUTLER, MICHAEL E

Tech Center 3600 • Art Units: 3653 3655

This examiner grants 51% of resolved cases

Analysis

Michael E. Butler is assigned to Tech Center 3600 and Art Unit 3653. He has 454 resolved cases. His allowance rate is 51.3 percent. This 51.3 percent rate shows the proportion of applications that result in a patent grant in Art Unit 3653.

The interview lift for this examiner is 21.9 percent. This 21.9 percent lift indicates that interviews are an effective strategy for improving the odds of a grant. Practitioners should consider the 21.9 percent lift when deciding whether to request an interview for the 454 resolved cases, as it increases the probability of success compared to the base rate.

The median days to allowance is 1541. This 1541 day figure represents the typical time required for an application to move from filing to a grant. The 1541 day median provides a benchmark for pendency in Tech Center 3600. Understanding the 51.3 percent allowance rate and the 1541 day median helps in setting realistic expectations for the prosecution process.

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

Performance Statistics

51.3%
Allow Rate
-0.7% vs TC avg
464
Total Applications
+21.9%
Interview Lift
1541
Avg Prosecution Days
Based on 454 resolved cases, 2023–2026

Rejection Statute Breakdown

5.6%
§101 Eligibility
23.0%
§102 Novelty
58.0%
§103 Obviousness
11.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17854110 SYSTEM FOR DETERMINING DISPOSAL OF SURGICAL INSTRUMENT AND RELATED METHODS Non-Final OA Cilag GmbH International
18763856 VISUAL LOGIN Non-Final OA NETRADYNE, INC.
17996964 Apparatus and Method for Charging a Load Handling Device on a Grid Non-Final OA Ocado Innovation Limited
18605596 Load Handling Sensors for a Material Handling Vehicle Non-Final OA The Raymond Corporation

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