Prosecution Insights
Last updated: October 02, 2026

Examiner: CHEUNG, HUBERT G

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

This examiner grants 63% of resolved cases

Analysis

Hubert G. Cheung is an examiner in Tech Center 2100 and Art Unit 2152. The examiner has 396 resolved cases. The data shows an allowance rate of 63.4 percent for these cases. This 63.4 percent rate provides a baseline for applicants to evaluate the probability of success when their applications are assigned to this examiner.

The interview lift for this examiner is 47.5 percent. This 47.5 percent lift is a comparison to the 63.4 percent allowance rate, indicating that direct communication is a significant factor in the prosecution process. Practitioners can use this figure to evaluate the impact of conducting an interview, as it correlates with an increased probability of reaching an allowance compared to the baseline.

The median days to allowance for Cheung is 1549. This 1549-day measure provides an expectation for the duration of the patent prosecution cycle. With 396 resolved cases, the examiner has a history that supports these metrics. The combination of the allowance rate and the 1549-day median pendency helps in planning patent strategies for Art Unit 2152.

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
425
Total Applications
+47.5%
Interview Lift
1549
Avg Prosecution Days
Based on 396 resolved cases, 2023–2026

Rejection Statute Breakdown

12.1%
§101 Eligibility
16.5%
§102 Novelty
51.1%
§103 Obviousness
14.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18554281 COMPUTER-IMPLEMENTED METHOD, COMPUTER PROGRAM AND DEVICE FOR EXTENDING A GRAPH OIN AN ERROR-AVOIDING MANNER BY AN EXTENSION THAT INCLUDES THE AT LEAST ONE PERMISSIBLE INSTANCE AND/OR THE LEAST ONE PERMISSIBLE LITERAL Final Rejection Robert Bosch GmbH
18647229 SYSTEMS AND METHODS FOR SIMULATING RANGE QUERIES IN A KEY/VALUE STORE Final Rejection Stripe, Inc.
19469278 ITERATIVE SEARCH PROCESSING Non-Final OA AMADEUS S.A.S.
19194901 OPTIMIZING COMPUTER CODE USING SERIALIZED DATA STRUCTURES Final Rejection Oracle International Corporation
18885531 UNIFIED RDBMS FRAMEWORK FOR HYBRID VECTOR SEARCH ON DIFFERENT DATA TYPES VIA SQL AND NOSQL Final Rejection Oracle International Corporation
18543798 DATA SOURCE MAPPER FOR ENHANCED DATA RETRIEVAL Non-Final OA INTUIT INC.
18882685 INTEGRATION DEVICE AND METHOD FOR INTEGRATING DATABASES THAT AVOIDS CONFLICTS Final Rejection Hitachi, Ltd.
19281254 AI AGENTIC SYSTEMS FOR SCENE UNDERSTANDING Non-Final OA NVIDIA Corporation
18700797 FRAGMENTED RECORD DETECTION BASED ON RECORDS MATCHING TECHNIQUES Final Rejection EQUIFAX INC.

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