Prosecution Insights
Last updated: October 27, 2026

Anh Tieu Dang, USPTO Patent Examiner

Listed by the USPTO as DANG, ANH TIEU

Tech Center 3700 • Art Units: 3731 3771

This examiner grants 66% of resolved cases

Analysis

DANG, ANH TIEU is a Tech Center 3700 examiner in Art Unit 3731 with 664 resolved cases. The allowance rate is 65.7%, and the median time to allowance is 1222 days. Practitioners can use the established case volume to examine how claim scope and response sequencing affect prosecution before this examiner.

The interview lift is 34.8%, showing a positive association with interviews. A focused discussion may help identify acceptable distinctions and make a later written response more precise.

The listed companies are Alcon Inc., Bioprotect Ltd., and Boston Scientific Corporation. Foley & Lardner LLP, SHAY GLENN LLP, and The Belles Group, P.C. are the listed firms.

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

Performance Statistics

65.7%
Allow Rate
-4.3% vs TC avg
703
Total Applications
+34.8%
Interview Lift
1222
Avg Prosecution Days
Based on 664 resolved cases, 2023–2026

Rejection Statute Breakdown

2.0%
§101 Eligibility
24.7%
§102 Novelty
44.4%
§103 Obviousness
22.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18898863 MEDICAL DEVICE Non-Final OA TERUMO KABUSHIKI KAISHA
19270350 INTRAOCULAR LENS INJECTOR Non-Final OA Alcon Inc.
18278371 DILATION DEVICES AND RELATED METHODS Non-Final OA Mayo Foundation for Medical Education and Research
18967745 KNIFE FOR CANNULATED SURGERY Final Rejection Warsaw Orthopedic, Inc.
18195405 METHOD AND SYSTEM FOR REDUCING LIMB ISCHEMIA Non-Final OA ABIOMED, Inc.
18898337 SYSTEMS AND METHODS FOR SHUNTING AND DEVICE IMPLANTATION Final Rejection EDWARDS LIFESCIENCES CORPORATION
19194479 SLOTTED CANULLA FOR ARTHROSCOPIC SURGERY Non-Final OA Smith & Nephew, Inc.
17346180 ADJUSTABLE-SHAPE SNARE FOR ENDOSCOPIC PROCEDURES Final Rejection Endovision Foundation

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Frequently Asked Questions

What is examiner Anh Tieu Dang's allowance rate?

65.7% of resolved applications examined by Anh Tieu Dang were allowed (664 resolved cases), compared with 63.1% across Art Unit 3731 over the last five years.

Does an interview help with examiner Anh Tieu Dang?

This examiner's interview lift is +34.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Anh Tieu Dang take to allow a patent?

Applications allowed by Anh Tieu Dang took 1,222 days on average from filing to allowance.

Which art unit does examiner Anh Tieu Dang work in?

Anh Tieu Dang examines applications in Art Unit 3731 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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