Prosecution Insights
Last updated: October 26, 2026

Tu A Vo, USPTO Patent Examiner

Listed by the USPTO as VO, TU A

Tech Center 3700 • Art Units: 3771 3783 3785

This examiner grants 61% of resolved cases

Analysis

VO, TU A examines cases in Tech Center 3700 and Art Unit 3771. The record covers 595 resolved cases, with a 61.0% allowance rate and a median of 1204 days to allowance. Interviews are associated with a 58.0% lift, making interview preparation a particularly relevant prosecution consideration for matters before this examiner.

The listed portfolio includes RESMED Pty Ltd., Koninklijke Philips N.V., and P Tech LLC. Frequently appearing firms are Abel Schillinger, LLP, ANDRUS INTELLECTUAL PROPERTY LAW, LLP, and Botos Churchill IP Law LLP-RMD. Practitioners handling similar matters may benefit from planning claim strategy and interview timing together, while accounting for the extended median path to allowance.

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

Performance Statistics

61.0%
Allow Rate
-9.0% vs TC avg
634
Total Applications
+58.0%
Interview Lift
1204
Avg Prosecution Days
Based on 595 resolved cases, 2023–2026

Rejection Statute Breakdown

3.8%
§101 Eligibility
14.7%
§102 Novelty
37.2%
§103 Obviousness
35.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18389598 TITRATION SUPPORT SYSTEM FOR COMPLICATED PATIENTS AND METHOD OF OPERATION THEREOF Non-Final OA KONINKLIJKE PHILIPS N.V.
18620414 SYSTEMS FOR GENERATING A LIQUID AEROSOL Non-Final OA Altria Client Services LLC
18444213 VEHICLE SEAT Non-Final OA TS TECH CO., LTD.
18985063 Portable Automatic Shirodhara Device Non-Final OA Gagan S Poojari
18651921 MASSAGER AND MASSAGE CHAIR FOR MASSAGING LIMBS Non-Final OA Shanghai Rongtai Health Technology Corporation Limited

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Frequently Asked Questions

What is examiner Tu A Vo's allowance rate?

61.0% of resolved applications examined by Tu A Vo were allowed (595 resolved cases), compared with 65.9% across Art Unit 3771 over the last five years.

Does an interview help with examiner Tu A Vo?

This examiner's interview lift is +58.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tu A Vo take to allow a patent?

Applications allowed by Tu A Vo took 1,204 days on average from filing to allowance.

Which art unit does examiner Tu A Vo work in?

Tu A Vo examines applications in Art Unit 3771 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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