Prosecution Insights
Last updated: October 27, 2026

Vivian Ailinh Tran, USPTO Patent Examiner

Listed by the USPTO as TRAN, VIVIAN AILINH

Tech Center 1700 • Art Units: 1794

This examiner grants 56% of resolved cases

Analysis

TRAN, VIVIAN AILINH is assigned to tech center 1700 and art unit 1794. The profile contains 203 resolved cases, an allowance rate of 55.7%, and a median of 1290 days to allowance. The data show a moderate allowance outcome within a limited case record, together with a timeline that applicants should consider when planning prosecution milestones.

The interview lift is 43.5%, making examiner interviews a material consideration for response planning. The listed companies are Heraeus, Roche Diabetes Care Inc., and Denso Corporation. The listed firms are NIXON & VANDERHYE, PC, PANITCH SCHWARZE BELISARIO & NADEL LLP, and BOSE MCKINNEY & EVANS LLP. These organizations indicate the range of applicants and counsel appearing in the available record.

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

Performance Statistics

55.7%
Allow Rate
-9.3% vs TC avg
232
Total Applications
+43.5%
Interview Lift
1290
Avg Prosecution Days
Based on 203 resolved cases, 2023–2026

Rejection Statute Breakdown

4.6%
§101 Eligibility
10.8%
§102 Novelty
46.8%
§103 Obviousness
32.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18161449 SENSOR CONTROL UNIT Non-Final OA DENSO CORPORATION
18840098 ELECTROLYTE ANALYSIS DEVICE Final Rejection HITACHI HIGH-TECH CORPORATION
18859101 MICRONEEDLE-BASED PLANT SENSORS AND METHODS OF MAKING AND USING THEREOF Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
18811886 METHOD OF RECONFIGURING OXYGEN CONCENTRATION ON METAL OXIDE AND METHOD OF OPERATING GAS SENSORS USING THE METHOD Non-Final OA Seoul National University R&DB FOUNDATION
18725295 ELECTRODE AND ELECTROCHEMICAL MEASUREMENT SYSTEM Non-Final OA NITTO DENKO CORPORATION
18852059 COMPACT SCALABLE DISSOLVED OXYGEN SENSOR Non-Final OA Yale University
18873272 ELECTROCHEMICAL SENSOR AND METHOD OF MANUFACTURING ELECTROCHEMICAL SENSOR Non-Final OA SUMITOMO CHEMICAL COMPANY, LIMITED
18533479 CONTACTING-TYPE CONDUCTIVITY SENSOR WITH CORROSION DIAGNOSTIC Final Rejection Rosemount Inc.

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Frequently Asked Questions

What is examiner Vivian Ailinh Tran's allowance rate?

55.7% of resolved applications examined by Vivian Ailinh Tran were allowed (203 resolved cases), compared with 59.5% across Art Unit 1794 over the last five years.

Does an interview help with examiner Vivian Ailinh Tran?

This examiner's interview lift is +43.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Vivian Ailinh Tran take to allow a patent?

Applications allowed by Vivian Ailinh Tran took 1,290 days on average from filing to allowance.

Which art unit does examiner Vivian Ailinh Tran work in?

Vivian Ailinh Tran examines applications in Art Unit 1794 in Tech Center 1700 (Chemistry & Materials).

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