Prosecution Insights
Last updated: October 27, 2026

Michael D Mcduffie, USPTO Patent Examiner

Listed by the USPTO as MCDUFFIE, MICHAEL D

Tech Center 4100 • Art Units: 3631 3632 3726 4100

This examiner grants 68% of resolved cases

Performance Statistics

67.7%
Allow Rate
+7.7% vs TC avg
880
Total Applications
-10.5%
Interview Lift
923
Avg Prosecution Days
Based on 857 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
27.4%
§102 Novelty
53.7%
§103 Obviousness
14.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19025285 Modular Systems and Components Non-Final OA Milwaukee Electric Tool Corporation
18931267 MOUNTING PLATE Non-Final OA MAHLE INTERNATIONAL GMBH
18917704 CUSHIONING RUBBER, REACTION FORCE ADJUSTING METHOD THEREOF, AND PEDESTAL Final Rejection NOK CORPORATION
18980869 ATTACHMENT FOR MOUNTING AIRCRAFT PROPULSION SYSTEM TO PYLONG STRUCTURE Final Rejection RTX Corporation
19086947 GIMBAL, CONTROL METHOD AND DEVICE OF GIMBAL, AND STORAGE MEDIUM Non-Final OA SZ DJI TECHNOLOGY CO., LTD.
19044281 METHOD AND ASSEMBLY FOR DISPLAYING AND SECURING A WEARABLE DEVICE AGAINST THEFT Non-Final OA SE-KURE CONTROLS, INC.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Michael D Mcduffie's allowance rate?

67.7% of resolved applications examined by Michael D Mcduffie were allowed (857 resolved cases), compared with 56.0% across Art Unit 3631 over the last five years.

Does an interview help with examiner Michael D Mcduffie?

This examiner's interview lift is -10.5 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 D Mcduffie take to allow a patent?

Applications allowed by Michael D Mcduffie took 923 days on average from filing to allowance.

Which art unit does examiner Michael D Mcduffie work in?

Michael D Mcduffie examines applications in Art Unit 3631 in Tech Center 4100.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month