Prosecution Insights
Last updated: October 27, 2026

Hy Khanh Doan, USPTO Patent Examiner

Listed by the USPTO as DOAN, HY KHANH

Tech Center 3700 • Art Units: 3791

This examiner grants 64% of resolved cases

Analysis

DOAN, HY KHANH handles matters in Tech Center 3700 and Art Unit 3791. The record includes 33 resolved cases, with a 63.6% allowance rate and a median of 1183 days to allowance. The 42.9% interview lift indicates that interviews are associated with a substantial improvement in allowance outcomes.

The listed companies are Terumo Corporation, Cardinal Health Inc., and Meta Platforms Technologies LLC. The leading firms are BUCHANAN, INGERSOLL & ROONEY PC, Greenberg Traurig, LLP - Meta Platforms, Inc., and HSML P.C. The limited case volume warrants caution, but applicants may want to prioritize interview preparation.

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

Performance Statistics

63.6%
Allow Rate
-6.4% vs TC avg
54
Total Applications
+42.9%
Interview Lift
1183
Avg Prosecution Days
Based on 33 resolved cases, 2023–2026

Rejection Statute Breakdown

8.3%
§101 Eligibility
24.8%
§102 Novelty
39.5%
§103 Obviousness
24.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18962744 TRANSFER INSTRUMENT Non-Final OA Terumo Kabushiki Kaisha
18882966 OPTO-ELECTRONIC HARDWARE CONFIGURATIONS FOR IMPLANTABLE CHEMICAL SENSORS Non-Final OA Cardiac Pacemakers, Inc.
18069083 IN-EAR TEMPERATURE SENSORS FOR AR/VR APPLICATIONS AND DEVICES Non-Final OA Meta Platforms Technologies, LLC

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Frequently Asked Questions

What is examiner Hy Khanh Doan's allowance rate?

63.6% of resolved applications examined by Hy Khanh Doan were allowed (33 resolved cases), compared with 53.3% across Art Unit 3791 over the last five years.

Does an interview help with examiner Hy Khanh Doan?

This examiner's interview lift is +42.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hy Khanh Doan take to allow a patent?

Applications allowed by Hy Khanh Doan took 1,183 days on average from filing to allowance.

Which art unit does examiner Hy Khanh Doan work in?

Hy Khanh Doan examines applications in Art Unit 3791 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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