Prosecution Insights
Last updated: October 26, 2026

Henry Tsang, USPTO Patent Examiner

Listed by the USPTO as TSANG, HENRY

Tech Center 3700 • Art Units: 2495 3781

This examiner grants 80% of resolved cases

Analysis

Henry Tsang has managed 477 resolved cases in Art Unit 2495 of Tech Center 3700. The examiner maintains a high allowance rate of 80.1% and a median time to allowance of 905 days. These metrics suggest a favorable environment for applicants, with a high probability of success and efficient timelines. The 477 resolved cases offer a reliable statistical profile for this examiner.

The interview lift is 17.0%, indicating that direct communication is associated with a significant increase in the 80.1% allowance rate. Major companies such as American Express Travel Related Services Company, Inc., ORACLE INTERNATIONAL Corporation, and Omron Corporation are frequent participants. These clients are often represented by JCIPRNET, KILYK & BOWERSOX, P.L.L.C., and KLARQUIST SPARKMAN, LLP. The 905-day median pendency is a positive factor for practitioners to consider. The combination of high success and a 17.0% lift makes this a positive environment for prosecution.

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

Performance Statistics

80.1%
Allow Rate
+10.1% vs TC avg
493
Total Applications
+17.0%
Interview Lift
905
Avg Prosecution Days
Based on 477 resolved cases, 2023–2026

Rejection Statute Breakdown

15.3%
§101 Eligibility
5.7%
§102 Novelty
52.5%
§103 Obviousness
17.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19079791 PROPAGATING IDENTITIES ACROSS DIFFERENT CLOUD SERVICE PROVIDERS Non-Final OA Oracle International Corporation
19114041 METHOD FOR OPTIMIZING AN EXECUTION OF A CRYPTOGRAPHIC PROCESS BASED ON MATRIX EXPANSION Non-Final OA THALES DIS FRANCE SAS

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Frequently Asked Questions

What is examiner Henry Tsang's allowance rate?

80.1% of resolved applications examined by Henry Tsang were allowed (477 resolved cases), compared with 71.9% across Art Unit 2495 over the last five years.

Does an interview help with examiner Henry Tsang?

This examiner's interview lift is +17.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Henry Tsang take to allow a patent?

Applications allowed by Henry Tsang took 905 days on average from filing to allowance.

Which art unit does examiner Henry Tsang work in?

Henry Tsang examines applications in Art Unit 2495 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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