Prosecution Insights
Last updated: October 04, 2026

Examiner: MCCULLOUGH, MICHAEL C

Tech Center 3600 • Art Units: 3600 3646 3649 3651 3653 3654 3671

This examiner grants 77% of resolved cases

Analysis

Michael C. McCullough is an examiner in Tech Center 3600 and Art Unit 3600. With 801 resolved cases, the examiner has an allowance rate of 77.2%. This is a high rate, suggesting a favorable environment for applicants where a large majority of cases result in a grant. The 77.2% allowance rate indicates that the examiner is generally receptive to the arguments and claim sets presented in this art unit.

The interview lift is 6.1%, which is a modest increase. This suggests that while interviews are helpful, the high baseline allowance rate of 77.2% means many applications are allowed through written prosecution alone. The median days to allowance is 878, which is a relatively efficient timeframe for prosecution. This 878-day median indicates that successful applications move through the system quickly. For practitioners, the combination of a 77.2% allowance rate and a fast 878-day median pendency across 801 resolved cases suggests a predictable and productive prosecution experience. While the 6.1% interview lift is small, it remains a useful secondary tactic for resolving any final issues that may arise in Tech Center 3600.

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

Performance Statistics

77.2%
Allow Rate
+25.2% vs TC avg
807
Total Applications
+6.1%
Interview Lift
878
Avg Prosecution Days
Based on 801 resolved cases, 2023–2026

Rejection Statute Breakdown

1.9%
§101 Eligibility
24.8%
§102 Novelty
38.3%
§103 Obviousness
32.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18664747 DRIVE TRANSMISSION DEVICE, SHEET CONVEYING DEVICE, AND IMAGE FORMING APPARATUS Non-Final OA RICOH COMPANY, LTD.
19199200 SYSTEM AND METHOD FOR TRANSPORTING SEPARATOR BY USING AIR GUIDE ROLLER Non-Final OA Samsung SDI Co., Ltd.

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