Prosecution Insights
Last updated: October 02, 2026

Examiner: MAH, CHUCK Y

Tech Center 3600 • Art Units: 3677

This examiner grants 80% of resolved cases

Analysis

Chuck Y Mah is an examiner in Art Unit 3677 and Tech Center 3600, with 1414 resolved cases. The allowance rate is 79.6 percent, indicating the probability of success for applicants. The median days to allowance is 725, which shows the prosecution timeline for this examiner. This large volume of cases provides a stable set of metrics for practitioners to use when planning their strategy.

The data also shows an interview lift of 10.4 percent. This lift indicates that interviews provide a benefit in reaching an allowance, alongside the baseline allowance rate of 79.6 percent. The 1414 resolved cases provide a reliable basis for these observations. The 725 median days to allowance is a figure for those seeking a grant within a specific timeframe.

In Tech Center 3600, the examiner's 79.6 percent allowance rate and 10.4 percent interview lift are indicators of their approach to patent examination. The 725 median days to allowance further describes the timing in Art Unit 3677. With 1414 resolved cases, these statistics offer a guide for patent prosecution and resource allocation for applicants.

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

Performance Statistics

79.6%
Allow Rate
+27.6% vs TC avg
1,431
Total Applications
+10.4%
Interview Lift
725
Avg Prosecution Days
Based on 1415 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
27.1%
§102 Novelty
26.8%
§103 Obviousness
40.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18689613 Auxiliary handle for a hand-held power tool Non-Final OA Hilti Aktiengesellschaft
18993855 FOLDABLE MECHANISM, ELECTRONIC DEVICE, AND DISASSEMBLY-ASSEMBLY STRUCTURE Non-Final OA HONOR DEVICE CO., LTD.
19046780 EXTENDABLE POLE FOR CLEANING TOOL Final Rejection Unger Marketing International, LLC

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