Prosecution Insights
Last updated: October 27, 2026

Chuck Y Mah, USPTO Patent Examiner

Listed by the USPTO as MAH, CHUCK Y

Tech Center 3600 • Art Units: 3677

This examiner grants 80% of resolved cases

Performance Statistics

79.6%
Allow Rate
+27.6% vs TC avg
1,438
Total Applications
+10.4%
Interview Lift
725
Avg Prosecution Days
Based on 1416 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
27.1%
§102 Novelty
26.7%
§103 Obviousness
40.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19337982 HINGE FOR A DOOR OF AN AIRCRAFT, WITH PASSAGE FOR A CABLE Non-Final OA Airbus Operations (S.A.S.)
18993855 FOLDABLE MECHANISM, ELECTRONIC DEVICE, AND DISASSEMBLY-ASSEMBLY STRUCTURE Non-Final OA HONOR DEVICE CO., LTD.
18689613 Auxiliary handle for a hand-held power tool Non-Final OA Hilti Aktiengesellschaft
19046780 EXTENDABLE POLE FOR CLEANING TOOL Final Rejection Unger Marketing International, LLC

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Frequently Asked Questions

What is examiner Chuck Y Mah's allowance rate?

79.6% of resolved applications examined by Chuck Y Mah were allowed (1,416 resolved cases), compared with 55.1% across Art Unit 3677 over the last five years.

Does an interview help with examiner Chuck Y Mah?

This examiner's interview lift is +10.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Chuck Y Mah take to allow a patent?

Applications allowed by Chuck Y Mah took 725 days on average from filing to allowance.

Which art unit does examiner Chuck Y Mah work in?

Chuck Y Mah examines applications in Art Unit 3677 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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