Prosecution Insights
Last updated: October 02, 2026

Examiner: VU, STEPHEN A

Tech Center 4100 • Art Units: 3619 3651 3652 3654 3658 4100

This examiner grants 82% of resolved cases

Analysis

Examiner Stephen A Vu, working in Art Unit 3619 of Tech Center 4100, has a volume of 1139 resolved cases. The data reveals an allowance rate of 82.1 percent for these applications. Furthermore, the median days to allowance is 758, which establishes the timeline for the prosecution path. This combination of the allowance rate and a 758-day median timeline provides a basis for applicant expectations in this docket. The data provides a basis for predicting the outcome of applications.

The interview lift for this examiner is 14.8 percent. This 14.8 percent lift is measured as an increase relative to the 82.1 percent allowance rate. Practitioners should consider interviews to resolve specific issues, although the baseline probability of allowance is already established. With 1139 resolved cases, the examiner's performance metrics are based on a large volume of records. The median to allowance and the interview lift suggest how the prosecution process in Tech Center 4100 moves toward a final disposition in Art Unit 3619.

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

Performance Statistics

82.1%
Allow Rate
+22.1% vs TC avg
1,151
Total Applications
+14.8%
Interview Lift
758
Avg Prosecution Days
Based on 1139 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
35.0%
§102 Novelty
30.7%
§103 Obviousness
26.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18565048 WIND TURBINE BLADE HANDLING TOOL AND METHOD FOR HANDLING OF A WIND TURBINE BLADE Non-Final OA Siemens Gamesa Renewable Energy A/S
18797088 SUBSTRATE TRANSFER APPARATUS AND SUBSTRATE TRANSFER METHOD Non-Final OA Tokyo Electron Limited
18356914 END EFFECTOR CONNECTOR FOR A ROBOTIC MANIPULATOR Non-Final OA Ocado Innovation Limited
18217088 Lifting Device and Method for Manipulating Appliance Non-Final OA Midea Group Co., Ltd.
18509669 GRIPPING TOOL Non-Final OA Sky Fabrication Inc.

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