Prosecution Insights
Last updated: October 02, 2026

Examiner: DUONG, OANH

Tech Center 2400 • Art Units: 2155 2441 2455 2459

This examiner grants 80% of resolved cases

Analysis

Oanh Duong is an examiner in Art Unit 2155, though the profile is associated with Tech Center 2400. With 604 resolved cases, the examiner maintains an allowance rate of 80.1 percent. The median days to allowance is 1004, showing the duration for the patent grant process. The 604 resolved cases provide a statistical basis for these performance metrics.

The interview lift is 12.2 percent, indicating that interviews are a way to advance prosecution. Given the 80.1 percent allowance rate, an interview can solidify the chances of success. The 1004-day median timeline is a factor for applicants to consider when filing in Art Unit 2155. With 604 resolved cases, the 12.2 percent lift and 80.1 percent allowance rate suggest that engagement is a strategy for most patent applications.

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

Performance Statistics

80.1%
Allow Rate
+22.1% vs TC avg
622
Total Applications
+12.2%
Interview Lift
1004
Avg Prosecution Days
Based on 604 resolved cases, 2023–2026

Rejection Statute Breakdown

10.0%
§101 Eligibility
19.2%
§102 Novelty
45.8%
§103 Obviousness
14.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18497365 SYSTEMS AND METHODS FOR RECEIVING SERVICE IDENTIFIERS FOR QUALITY OF SERVICE DECISIONS Final Rejection Verizon Patent and Licensing Inc.
18654492 PRIORITIZATION OF DATA STREAMS BETWEEN A SOURCE OF AUDIO/VIDEO CONTENT AND TELECOMMUNICATION CLIENTS Final Rejection Orange
19012424 SYSTEMS AND METHODS FOR ENABLING COMMUNICATIONS IN AN EXTENDED REALITY ENVIRONMENT Non-Final OA Adeia Guides Inc.
18880582 PACKET GENERATION METHOD, PACKET TRANSMISSION METHOD, NETWORK DEVICE, MEDIUM, AND PRODUCT Non-Final OA ZTE CORPORATION
18435688 PHYSICAL SPACE RECOMMENDATIONS TO OPTIMIZE USER APPLICATION QUALITY OF EXPERIENCE IN OFFICE ENVIRONMENTS Non-Final OA Cisco Technology, Inc.
19097002 METHODS AND SYSTEMS FOR ROUTING MEDIA Non-Final OA GENETEC INC.

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