Prosecution Insights
Last updated: October 02, 2026

Examiner: VO, TU A

Tech Center 3700 • Art Units: 3771 3783 3785

This examiner grants 61% of resolved cases

Analysis

Tu A Vo is assigned to Tech Center 3700 and Art Unit 3771. The examiner has 589 resolved cases. The allowance rate is 60.6 percent. This rate indicates a moderate level of difficulty for applicants in this art unit. Practitioners should be prepared to present clear and persuasive arguments to secure a grant from this examiner.

The interview lift is 58.9 percent, which is quite high. This suggests that interviews are extremely effective at increasing the chances of allowance from the 60.6 percent baseline. Practitioners should prioritize interviews as a primary strategy when working with this examiner. The data indicates that direct communication in Art Unit 3771 is a powerful tool for resolving rejections.

The median days to allowance is 1203. This figure shows the typical duration for an application to reach a grant. With 589 resolved cases, the examiner has a well-documented history in Tech Center 3700. This timeline provides a benchmark for applicants to manage their expectations regarding the length of the prosecution process.

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

Performance Statistics

60.6%
Allow Rate
-9.4% vs TC avg
619
Total Applications
+58.9%
Interview Lift
1203
Avg Prosecution Days
Based on 589 resolved cases, 2023–2026

Rejection Statute Breakdown

3.7%
§101 Eligibility
14.7%
§102 Novelty
37.4%
§103 Obviousness
35.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17694789 DETECTION OF ASYNCHRONY Final Rejection ResMed Pty Ltd
18389598 TITRATION SUPPORT SYSTEM FOR COMPLICATED PATIENTS AND METHOD OF OPERATION THEREOF Non-Final OA KONINKLIJKE PHILIPS N.V.
18893853 Vibratory Energy Systems and Methods for Occluded Body Cavities Final Rejection P Tech, LLC
18886736 PATHOGEN-INACTIVATING FACIAL MASK Non-Final OA ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
18620414 SYSTEMS FOR GENERATING A LIQUID AEROSOL Non-Final OA Altria Client Services LLC
18486226 DEVICE FOR CALMING OR MIXING GASES, PROCESS AND COMPUTER PROGRAM FOR MANUFACTURING A DEVICE FOR CALMING OR MIXING GASES Non-Final OA Drägerwerk AG & Co. KGaA
18797070 BREATHING CIRCUIT COMPONENTS FOR RESPIRATORY APPARATUS Non-Final OA Fisher & Paykel Healthcare Limited
18485219 COMPONENTS FOR MEDICAL CIRCUITS Non-Final OA Fisher & Paykel Healthcare Limited
18273662 SYSTEMS AND METHODS FOR LEAK DETECTION IN A RESPIRATORY THERAPY SYSTEM Final Rejection ResMed Sensor Technologies Limited
18024100 DRUG DELIVERY DEVICES WITH MULTIPLE DRUG VIALS Non-Final OA JANSSEN PHARMACEUTICA NV
18651921 MASSAGER AND MASSAGE CHAIR FOR MASSAGING LIMBS Non-Final OA Shanghai Rongtai Health Technology Corporation Limited

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