Prosecution Insights
Last updated: October 26, 2026

Michael C Mccullough, USPTO Patent Examiner

Listed by the USPTO as 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 has a 77.2% allowance rate across 801 resolved cases in Art Unit 3600. The median days to allowance is 878. The interview lift of 6.1% shows a positive benefit from direct communication, suggesting that interviews offer an advantage compared to the 77.2% baseline. This positive lift can be a tool for resolving final technical points and ensuring a path to allowance.

Ricoh Company, Ltd., Samsung SDI Co., Ltd., and Inflexion Point Technologies LLC are frequent applicants. Goodhue, Coleman & Owens, P.C., Harness, Dickey & Pierce P.L.C., and Womble Bond Dickinson US LLP are the top firms. The 77.2% allowance rate and 878-day median pendency indicate an efficient prosecution environment. For the electronics and technology companies listed, the 6.1% lift is a tactical option to further enhance their prospects. The data reflects a predictable venue where applications can expect consistent results across 801 resolved cases.

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
809
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
38.1%
§103 Obviousness
32.3%
§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.

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Frequently Asked Questions

What is examiner Michael C Mccullough's allowance rate?

77.2% of resolved applications examined by Michael C Mccullough were allowed (801 resolved cases), compared with 38.8% across Art Unit 3600 over the last five years.

Does an interview help with examiner Michael C Mccullough?

This examiner's interview lift is +6.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Michael C Mccullough take to allow a patent?

Applications allowed by Michael C Mccullough took 878 days on average from filing to allowance.

Which art unit does examiner Michael C Mccullough work in?

Michael C Mccullough examines applications in Art Unit 3600 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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