Prosecution Insights
Last updated: October 01, 2026

Examiner: TSANG, HENRY

Tech Center 3700 • Art Units: 2495 3781

This examiner grants 80% of resolved cases

Analysis

Examiner Henry Tsang has overseen 475 resolved cases in Art Unit 2495. The examiner maintains an allowance rate of 80.0 percent. A notable data point is the interview lift of 17.1 percent, which indicates that interviews are a productive strategy for advancing applications toward a positive outcome. This 17.1 percent lift suggests that verbal communication can effectively resolve issues that might persist in written prosecution. Practitioners should consider the 80.0 percent allowance rate as a strong baseline for success in Tech Center 3700.

The median time to reach an allowance is 905 days. This duration reflects the typical pendency for successful applications under this examiner's review. Practitioners should use the 905-day median to manage client expectations regarding the timeline for their applications. With 475 resolved cases, the examiner's trends are well-documented. The high allowance rate and the positive impact of interviews are key factors to consider when developing a prosecution strategy. Engaging the examiner directly appears to be a beneficial approach.

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

Performance Statistics

80.0%
Allow Rate
+10.0% vs TC avg
487
Total Applications
+17.1%
Interview Lift
905
Avg Prosecution Days
Based on 475 resolved cases, 2023–2026

Rejection Statute Breakdown

15.1%
§101 Eligibility
5.8%
§102 Novelty
52.7%
§103 Obviousness
17.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18237043 CONSOLIDATED PROTOCOL FOR DECENTRALIZED IDENTIFIER COMMUNICATIONS Final Rejection American Express Travel Related Services Company, Inc.
19198607 COMMUNICATION METHOD, APPARATUS, AND SYSTEM Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18545943 ABNORMALITY DETERMINATION SYSTEM Non-Final OA CANON KABUSHIKI KAISHA
19079791 PROPAGATING IDENTITIES ACROSS DIFFERENT CLOUD SERVICE PROVIDERS Non-Final OA Oracle International Corporation
19046355 MESSAGING BASED ON TRUST LEVELS AND RESOURCE LIMITATIONS IN A MESH NETWORK Non-Final OA ITRON, INC.
18600762 AUTHENTICATION RELAY SERVER AND COMPUTER READABLE STORAGE MEDIUM Final Rejection OMRON Corporation

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