Prosecution Insights
Last updated: October 26, 2026

Michael C Zarroli, USPTO Patent Examiner

Listed by the USPTO as ZARROLI, MICHAEL C

Tech Center 3600 • Art Units: 2831 2833 2839 3649 3658 3664

This examiner grants 72% of resolved cases

Analysis

ZARROLI, MICHAEL C is a USPTO patent examiner in tech center 3600 and art unit 2831. The record includes 975 resolved cases, a 72.4% allowance rate, and a median of 839 days to allowance. The substantial case volume supports review of recurring prosecution patterns, and the allowance figure indicates that a majority of resolved cases reached allowance.

The interview lift is 15.8%, reflecting a positive association between interviews and allowance outcomes. Mellanox Technologies Ltd., NEC Corporation, and Denso Corporation are the listed companies. The listed firms are BANNER & WITCOFF, LTD., CANTOR COLBURN LLP, and K&L Gates LLP. These recurring applicant and counsel relationships may inform prosecution planning for applications in art unit 2831.

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

Performance Statistics

72.4%
Allow Rate
+20.4% vs TC avg
999
Total Applications
+15.8%
Interview Lift
839
Avg Prosecution Days
Based on 975 resolved cases, 2023–2026

Rejection Statute Breakdown

4.6%
§101 Eligibility
25.9%
§102 Novelty
29.9%
§103 Obviousness
38.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19158078 PROCESSING SYSTEM, PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM Non-Final OA NEC Corporation
19101924 METHOD AND SYSTEM FOR EXPLORING A REAL-WORLD ENVIRONMENT Non-Final OA Dyson Technology Limited
19101929 Autonomous Driving Sensing Method and System, Controller and Computer-Readable Storage Medium Non-Final OA ZTE CORPORATION

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 C Zarroli's allowance rate?

72.4% of resolved applications examined by Michael C Zarroli were allowed (975 resolved cases), compared with 72.3% across Art Unit 2831 over the last five years.

Does an interview help with examiner Michael C Zarroli?

This examiner's interview lift is +15.8 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 Zarroli take to allow a patent?

Applications allowed by Michael C Zarroli took 839 days on average from filing to allowance.

Which art unit does examiner Michael C Zarroli work in?

Michael C Zarroli examines applications in Art Unit 2831 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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