Prosecution Insights
Last updated: October 26, 2026

Hao D Mai, USPTO Patent Examiner

Listed by the USPTO as MAI, HAO D

Tech Center 3700 • Art Units: 3732 3772

This examiner grants 49% of resolved cases

Analysis

MAI, HAO D works in Tech Center 3700 and art unit 3732. The profile reports 719 resolved cases and an allowance rate of 49.2%. The median days to allowance is 1336, suggesting that applicants should plan for a lengthy prosecution horizon and maintain room for iterative claim development.

The interview lift is 39.4%, a strong positive association that makes examiner interviews an important option when clarifying claim scope or narrowing disputes. The listed companies are Align Technology Inc., Young Innovations Inc., and Rdk Company LLC. The listed firms are FERGUSON CASE ORR PATERSON LLP, FisherBroyles, LLP - Align Technology, Inc., and GORDON & JACOBSON, P.C. The profile is concentrated in dental and medical-device technology.

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

Performance Statistics

49.2%
Allow Rate
-20.8% vs TC avg
773
Total Applications
+39.4%
Interview Lift
1336
Avg Prosecution Days
Based on 719 resolved cases, 2023–2026

Rejection Statute Breakdown

2.4%
§101 Eligibility
24.5%
§102 Novelty
43.6%
§103 Obviousness
26.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18682504 Improved Interproximal Contacts in Dental Restoration Molds Final Rejection Solventum Intellectual Properties Company

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Frequently Asked Questions

What is examiner Hao D Mai's allowance rate?

49.2% of resolved applications examined by Hao D Mai were allowed (719 resolved cases), compared with 52.0% across Art Unit 3732 over the last five years.

Does an interview help with examiner Hao D Mai?

This examiner's interview lift is +39.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hao D Mai take to allow a patent?

Applications allowed by Hao D Mai took 1,336 days on average from filing to allowance.

Which art unit does examiner Hao D Mai work in?

Hao D Mai examines applications in Art Unit 3732 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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