Prosecution Insights
Last updated: October 27, 2026

Chau D Le, USPTO Patent Examiner

Listed by the USPTO as LE, CHAU D

Tech Center 2400 • Art Units: 2408 2431 2447 2493

This examiner grants 85% of resolved cases

Performance Statistics

85.3%
Allow Rate
+27.3% vs TC avg
562
Total Applications
+16.8%
Interview Lift
1026
Avg Prosecution Days
Based on 544 resolved cases, 2023–2026

Rejection Statute Breakdown

15.9%
§101 Eligibility
15.0%
§102 Novelty
44.0%
§103 Obviousness
7.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18892284 DIGITAL CREDENTIAL REVOCATION Non-Final OA Apple Inc.
18996636 SHARING METHOD FOR CONTENT SPACE, ELECTRONIC DEVICE, AND STORAGE MEDIUM Non-Final OA Beijing Zitiao Network Technology Co., Ltd.
19111722 IOT SYSTEM AND PROGRAM Non-Final OA KABUSHIKI KAISHA TOSHIBA
19248029 PROVISIONING OF A SHIPPABLE STORAGE DEVICE AND INGESTING DATA FROM THE SHIPPABLE STORAGE DEVICE Non-Final OA Amazon Technologies, Inc.
19197868 PRIVACY-PRESERVING DATA DEDUPLICATION Non-Final OA Visa International Service Association

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Frequently Asked Questions

What is examiner Chau D Le's allowance rate?

85.3% of resolved applications examined by Chau D Le were allowed (544 resolved cases), compared with 89.4% across Art Unit 2408 over the last five years.

Does an interview help with examiner Chau D Le?

This examiner's interview lift is +16.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Chau D Le take to allow a patent?

Applications allowed by Chau D Le took 1,026 days on average from filing to allowance.

Which art unit does examiner Chau D Le work in?

Chau D Le examines applications in Art Unit 2408 in Tech Center 2400 (Networking & Security).

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