Prosecution Insights
Last updated: October 27, 2026

Son T Le, USPTO Patent Examiner

Listed by the USPTO as LE, SON T

Tech Center 2800 • Art Units: 2858 2863 2868

This examiner grants 83% of resolved cases

Analysis

LE, SON T works in Tech Center 2800 and Art Unit 2858. The record covers 679 resolved cases, with an allowance rate of 82.6% and a median of 968 days to allowance. Interviews are associated with a 14.1% lift in allowance outcomes. That combination indicates that interview preparation may be a meaningful part of prosecution strategy before relying on written exchanges alone.

The recorded company portfolio includes ZTE Corporation, SHIMADZU Corporation, and The Furukawa Battery Co., Ltd. The listed firms are Muir Patent Law, PLLC, Vivacqua Crane, and YOUNG BASILE. Counsel handling matters here can use the allowance history as a baseline for claim presentation, while treating the interview figure as a reason to evaluate whether examiner discussions could improve case positioning.

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

Performance Statistics

82.6%
Allow Rate
+14.6% vs TC avg
690
Total Applications
+14.1%
Interview Lift
968
Avg Prosecution Days
Based on 679 resolved cases, 2023–2026

Rejection Statute Breakdown

5.8%
§101 Eligibility
26.7%
§102 Novelty
53.4%
§103 Obviousness
9.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18907148 DATA PROCESSING METHOD, RECORDING MEDIUM, AND DATA PROCESSING SYSTEM Non-Final OA SHIMADZU CORPORATION

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Frequently Asked Questions

What is examiner Son T Le's allowance rate?

82.6% of resolved applications examined by Son T Le were allowed (679 resolved cases), compared with 83.6% across Art Unit 2858 over the last five years.

Does an interview help with examiner Son T Le?

This examiner's interview lift is +14.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Son T Le take to allow a patent?

Applications allowed by Son T Le took 968 days on average from filing to allowance.

Which art unit does examiner Son T Le work in?

Son T Le examines applications in Art Unit 2858 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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