Prosecution Insights
Last updated: October 02, 2026

Examiner: DANG, ANH TIEU

Tech Center 3700 • Art Units: 3731 3771

This examiner grants 66% of resolved cases

Analysis

Anh Tieu Dang operates within Art Unit 3731 of Tech Center 3700, where he has handled 660 resolved cases. His overall allowance rate of 65.5% serves as a primary indicator of his disposition toward applications. For practitioners, the interview lift of 35.5% is a critical figure, as it shows that verbal engagement with the examiner significantly improves the chances of reaching an allowance.

The median days to allowance for this examiner is 1220. This timeline indicates that applicants should prepare for a prosecution cycle lasting over three years. The 65.5% allowance rate, combined with the 35.5% interview lift, suggests that while the process may be lengthy, active advocacy through interviews is highly effective. In Art Unit 3731, the 1220-day median pendency is a key planning factor for those managing 660 resolved cases or similar portfolios.

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

Performance Statistics

65.5%
Allow Rate
-4.5% vs TC avg
689
Total Applications
+35.5%
Interview Lift
1220
Avg Prosecution Days
Based on 660 resolved cases, 2023–2026

Rejection Statute Breakdown

1.9%
§101 Eligibility
24.6%
§102 Novelty
44.6%
§103 Obviousness
21.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19189539 ARTICULATION MECHANISMS AND METHODS OF USE Non-Final OA Boston Scientific Scimed, Inc.
18070531 SURGICAL INSTRUMENT WITH SELECTOR Non-Final OA Cilag GmbH International
16612035 DEVICE TO FACILITATE PERFORMING DESCEMET'S MEMBRANE ENDOTHELIAL KERATOPLASTY (DMEK) Non-Final OA THE JOHNS HOPKINS UNIVERSITY
18967745 KNIFE FOR CANNULATED SURGERY Final Rejection Warsaw Orthopedic, Inc.
18898967 SURGICAL INSTRUMENTS HAVING REDUCED ADHERENCE TO VITREOUS Final Rejection Alcon Inc.
19194479 SLOTTED CANULLA FOR ARTHROSCOPIC SURGERY Non-Final OA Smith & Nephew, Inc.
18888585 SURGICAL INSTRUMENTS FOR PHACOEMULSIFICATION SURGERY Non-Final OA Johnson & Johnson Surgical Vision, Inc.
18195405 METHOD AND SYSTEM FOR REDUCING LIMB ISCHEMIA Non-Final OA ABIOMED, Inc.
18385019 DEVICE AND METHOD TO REMOVE OBSTRUCTION FROM THROAT OF A USER Final Rejection HCL Technologies Limited
18410384 AORTIC PUNCH Non-Final OA The University of Toledo
18427167 Controlled Tissue Dissection Systems and Methods Final Rejection BioProtect Ltd.
18465258 UNIVERSAL FACIAL REJUVENATION TREATMENT SYSTEM (U-FRTS) Non-Final OA Skin Aesthetics Inc.

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