Prosecution Insights
Last updated: October 27, 2026

Michael L Westbrook, USPTO Patent Examiner

Listed by the USPTO as WESTBROOK, MICHAEL L

Tech Center 2100 • Art Units: 2139

This examiner grants 75% of resolved cases

Analysis

WESTBROOK, MICHAEL L is assigned to Tech Center 2100 and Art Unit 2139. The record covers 225 resolved cases, with a 74.7% allowance rate and a median of 1051 days to allowance. Interviews show a positive 6.4% lift, although the effect is modest relative to the overall allowance result. The record therefore supports interviews as a useful but not decisive prosecution tool.

The listed companies are Samsung Electronics Co., Ltd., Robert Bosch GmbH, and Avago Technologies International Sales Pte. Limited. The listed firms are Crowell, F. CHAU & ASSOCIATES, LLC, and NORTON ROSE FULBRIGHT US LLP. Practitioners handling work in this docket should account for the 1051-day median and use interviews to clarify claim scope, while preserving written positions that can support later amendments.

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

Performance Statistics

74.7%
Allow Rate
+19.7% vs TC avg
243
Total Applications
+6.4%
Interview Lift
1051
Avg Prosecution Days
Based on 225 resolved cases, 2023–2026

Rejection Statute Breakdown

3.9%
§101 Eligibility
19.6%
§102 Novelty
48.7%
§103 Obviousness
22.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18989513 MEMORY DEVICE USING COMPRESSED ZONES AND OPERATING METHOD THEREOF Final Rejection Samsung Electronics Co., Ltd.
18219547 PROMPT AND GRADUAL MIGRATION SCHEMES Final Rejection Samsung Electronics Co., Ltd.
18834005 METHOD FOR PROVIDING AN ACCESS POINT FOR MEASURING AND CALIBRATING ONE OR MORE FUNCTIONS OF A COMPUTING UNIT Final Rejection Robert Bosch GmbH
18736435 RAID-on-Chip Devices and Clusters Final Rejection Avago Technologies International Sales Pte. Limited
18754923 MAINTAINING INTEGRITY OF A MEMORY COMPONENT Final Rejection Micron Technology, Inc.
18179502 APPLICATION-CONSISTENT SNAPSHOTS Non-Final OA INTERNATIONAL BUSINESS MACHINES CORPORATION
18627334 PROCESSING AND MEMORY DEVICE AND SYSTEM Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.

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Frequently Asked Questions

What is examiner Michael L Westbrook's allowance rate?

74.7% of resolved applications examined by Michael L Westbrook were allowed (225 resolved cases), compared with 76.6% across Art Unit 2139 over the last five years.

Does an interview help with examiner Michael L Westbrook?

This examiner's interview lift is +6.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Michael L Westbrook take to allow a patent?

Applications allowed by Michael L Westbrook took 1,051 days on average from filing to allowance.

Which art unit does examiner Michael L Westbrook work in?

Michael L Westbrook examines applications in Art Unit 2139 in Tech Center 2100 (Computing & Software).

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