Prosecution Insights
Last updated: October 26, 2026

Hubert G Cheung, USPTO Patent Examiner

Listed by the USPTO as CHEUNG, HUBERT G

Tech Center 2100 • Art Units: 2152 2157 2159 2161 2169

This examiner grants 63% of resolved cases

Analysis

CHEUNG, HUBERT G works in tech center 2100 and art unit 2152, with 399 resolved cases. The allowance rate is 63.4%, and the median time to allowance is 1547 days. The interview lift is 47.8%, indicating a strong positive association, although the median timeline points to extended prosecution.

The leading companies are Ocient Inc., Innovasoft Tech Holdings Ltd., and ORACLE INTERNATIONAL Corporation. The leading firms are Dinsmore & Shohl LLP, Levenfeld Pearlstein, LLC, and MATTINGLY & MALUR, PC. Applicants should plan for sustained prosecution and use interviews to clarify issues efficiently.

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

Performance Statistics

63.4%
Allow Rate
+8.4% vs TC avg
429
Total Applications
+47.8%
Interview Lift
1547
Avg Prosecution Days
Based on 399 resolved cases, 2023–2026

Rejection Statute Breakdown

12.3%
§101 Eligibility
16.7%
§102 Novelty
50.4%
§103 Obviousness
14.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19194901 OPTIMIZING COMPUTER CODE USING SERIALIZED DATA STRUCTURES Final Rejection Oracle International Corporation
18882685 INTEGRATION DEVICE AND METHOD FOR INTEGRATING DATABASES THAT AVOIDS CONFLICTS Final Rejection Hitachi, Ltd.

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Frequently Asked Questions

What is examiner Hubert G Cheung's allowance rate?

63.4% of resolved applications examined by Hubert G Cheung were allowed (399 resolved cases), compared with 64.7% across Art Unit 2152 over the last five years.

Does an interview help with examiner Hubert G Cheung?

This examiner's interview lift is +47.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hubert G Cheung take to allow a patent?

Applications allowed by Hubert G Cheung took 1,547 days on average from filing to allowance.

Which art unit does examiner Hubert G Cheung work in?

Hubert G Cheung examines applications in Art Unit 2152 in Tech Center 2100 (Computing & Software).

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