Prosecution Insights
Last updated: October 27, 2026

Brent D Castiaux, USPTO Patent Examiner

Listed by the USPTO as CASTIAUX, BRENT D

Tech Center 2800 • Art Units: 2618 2622 2623 2691 2695 2815 2841

This examiner grants 84% of resolved cases

Analysis

Brent D. Castiaux has a record of 550 resolved cases in Art Unit 2618 within Tech Center 2800. His allowance rate is 83.5%, which indicates a consistent path to grant for most applicants. The median days to allowance is 750, reflecting the typical duration for his docket.

The data highlights a 15.0% interview lift, demonstrating that personal engagement with the examiner can enhance the likelihood of an allowance beyond the 83.5% baseline. This lift is particularly relevant for top companies like LG Display Co., Ltd., BOE Technology Group Co., Ltd., and Samsung Display Co., Ltd. These entities are frequently represented by firms such as WHDA, LLP, Birch Stewart Kolasch & Birch, LLP, and Cantor Colburn LLP.

Practitioners should note the 750-day median pendency when setting expectations for their clients. The 15.0% lift suggests that an interview is a productive tactical choice to resolve potential issues. With 550 resolved cases, the examiner's trends in Tech Center 2800 provide a reliable basis for strategic planning.

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

Performance Statistics

83.5%
Allow Rate
+15.5% vs TC avg
570
Total Applications
+15.0%
Interview Lift
750
Avg Prosecution Days
Based on 550 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
26.6%
§102 Novelty
61.1%
§103 Obviousness
8.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19352177 DISPLAY APPARATUS Non-Final OA LG DISPLAY CO., LTD.
19253229 DISPLAY APPARATUS Final Rejection LG Display Co., Ltd.
18793516 DISPLAY DEVICE Non-Final OA LG Display Co., Ltd.
19265378 DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC DEVICE USING THE SAME Final Rejection SAMSUNG DISPLAY CO., LTD.
18994109 PIXEL CIRCUIT, DRIVING METHOD, AND DISPLAY DEVICE Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
18852748 PIXEL CIRCUIT, PIXEL DRIVING METHOD AND DISPLAY DEVICE Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
19261154 TOUCH MODULE, ELECTRONIC DEVICE, TOUCH ACCESSORY, AND TOUCH DETECTION METHOD Non-Final OA Huawei Technologies Co., Ltd.

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Frequently Asked Questions

What is examiner Brent D Castiaux's allowance rate?

83.5% of resolved applications examined by Brent D Castiaux were allowed (550 resolved cases), compared with 57.3% across Art Unit 2618 over the last five years.

Does an interview help with examiner Brent D Castiaux?

This examiner's interview lift is +15.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Brent D Castiaux take to allow a patent?

Applications allowed by Brent D Castiaux took 750 days on average from filing to allowance.

Which art unit does examiner Brent D Castiaux work in?

Brent D Castiaux examines applications in Art Unit 2618 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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