Prosecution Insights
Last updated: October 27, 2026

Bao D Nguyen, USPTO Patent Examiner

Listed by the USPTO as NGUYEN, BAO D

Tech Center 3700 • Art Units: 3743 3762

This examiner grants 54% of resolved cases

Analysis

NGUYEN, BAO D is assigned to Technology Center 3700 and Art Unit 3743. The record covers 371 resolved cases, with an allowance rate of 54.4%. That rate indicates a materially mixed prosecution record, so applicants should expect claim strategy and response quality to matter. The median time to allowance is 1271 days, making prosecution planning and client expectations important from the outset.

Interviews are associated with a 27.6% lift in allowance outcomes. That figure gives practitioners a concrete reason to consider examiner interviews when claim scope or technical distinctions require clarification. The leading company filers are LG Electronics Inc., Samsung Electronics Co., Ltd., and Koninklijke Philips N.V. The leading firms are ARC PATENTS, Blank Rome LLP, and Dority & Manning, P.A. and Haier US Appliance.

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

Performance Statistics

54.4%
Allow Rate
-15.6% vs TC avg
397
Total Applications
+27.6%
Interview Lift
1271
Avg Prosecution Days
Based on 371 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
13.5%
§102 Novelty
56.3%
§103 Obviousness
29.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18714859 CLOTHING PROCESSING APPARATUS Non-Final OA LG Electronics Inc.
17690598 LAUNDRY TREATING APPARATUS Final Rejection LG Electronics Inc.
18334075 SUBSTRATE PROCESSING APPARATUS AND METHOD OF PROCESSING A SUBSTRATE USING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18037792 WATER ION GENERATION DEVICE AND PERSONAL CARE APPLIANCE Non-Final OA KONINKLIJKE PHILIPS N.V.
18191871 METHOD OF MANUFACTURING SEALED BATTERY Final Rejection Prime Planet Energy & Solutions, Inc.
18020668 DRYING OF FILTER MODULES AND FILTER HOUSINGS USING A FREQUENCY-GUIDED MICROWAVE PROCESS Non-Final OA Fricke und Mallah Microwave Technology GmbH

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Frequently Asked Questions

What is examiner Bao D Nguyen's allowance rate?

54.4% of resolved applications examined by Bao D Nguyen were allowed (371 resolved cases), compared with 0.0% across Art Unit 3743 over the last five years.

Does an interview help with examiner Bao D Nguyen?

This examiner's interview lift is +27.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Bao D Nguyen take to allow a patent?

Applications allowed by Bao D Nguyen took 1,271 days on average from filing to allowance.

Which art unit does examiner Bao D Nguyen work in?

Bao D Nguyen examines applications in Art Unit 3743 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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