Prosecution Insights
Last updated: October 27, 2026

Laureen Chan, USPTO Patent Examiner

Listed by the USPTO as CHAN, LAUREEN

Tech Center 1700 • Art Units: 1713 1715 1716 1717

This examiner grants 58% of resolved cases

Analysis

CHAN, LAUREEN has 238 resolved cases, an allowance rate of 57.6%, and a median of 1278 days to allowance. The profile is in Tech Center 1700 and art unit 1713. The 54.5% interview lift is the most pronounced measured feature in the profile and supports deliberate interview preparation.

The listed companies are Tokyo Electron Limited, Samsung Display Co., Ltd., and Lam Research Corporation. CANTOR COLBURN LLP, JCIPRNET, and Xsensus are the leading listed firms. Counsel should pair the interview signal with careful substantive prosecution planning because the allowance rate remains below a majority and the median timing is extended.

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

Performance Statistics

57.6%
Allow Rate
-7.4% vs TC avg
279
Total Applications
+54.5%
Interview Lift
1278
Avg Prosecution Days
Based on 238 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
15.1%
§102 Novelty
55.7%
§103 Obviousness
25.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18654289 DEPOSITION APPARATUS Non-Final OA Samsung Display Co., Ltd.
19393253 TAPERED UPPER ELECTRODE FOR UNIFORMITY CONTROL IN PLASMA PROCESSING Non-Final OA Lam Research Corporation
18750539 PLASMA PROCESSING APPARATUS Non-Final OA Tokyo Electron Limited
18120050 UPPER ELECTRODE AND PLASMA PROCESSING APPARATUS Final Rejection Tokyo Electron Limited
18227226 CHAMBER FOR SUBSTRATE BACKSIDE AND BEVEL DEPOSITION Final Rejection Applied Materials, Inc.
17023186 PLASMA CHAMBER WITH A MULTIPHASE ROTATING MODULATED CROSS-FLOW Final Rejection Applied Materials, Inc.

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Frequently Asked Questions

What is examiner Laureen Chan's allowance rate?

57.6% of resolved applications examined by Laureen Chan were allowed (238 resolved cases), compared with 62.4% across Art Unit 1713 over the last five years.

Does an interview help with examiner Laureen Chan?

This examiner's interview lift is +54.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Laureen Chan take to allow a patent?

Applications allowed by Laureen Chan took 1,278 days on average from filing to allowance.

Which art unit does examiner Laureen Chan work in?

Laureen Chan examines applications in Art Unit 1713 in Tech Center 1700 (Chemistry & Materials).

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