Prosecution Insights
Last updated: October 02, 2026

Examiner: CHAN, KO HUNG

Tech Center 3700 • Art Units: 3631 3632 3637 3654 3735 3736

This examiner grants 67% of resolved cases

Analysis

Ko Hung Chan operates within Tech Center 3700 and is assigned to Art Unit 3631. The examiner has reached a resolution in 1293 cases, demonstrating experience with the specific legal and technical requirements of this unit. This number of resolved cases offers a dataset for observing prosecution outcomes and understanding the examiner's decision-making history.

The data reveals an allowance rate of 66.7 percent. This rate shows the proportion of applications handled by this examiner that result in a patent grant. The median days to allowance is 796, which indicates the timeline for those applications that overcome rejections or objections within the 3700 tech center. Practitioners can use this information to forecast the duration of the examination process.

Practitioners may evaluate direct communication, as the interview lift stands at 15.0 percent. This increase in the likelihood of allowance following an interview suggests that the examiner clarifies technical nuances through discussion. Utilizing interviews is a strategy for applicants to address rejections and modify their success rate when working with this particular examiner.

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

Performance Statistics

66.7%
Allow Rate
-3.3% vs TC avg
1,314
Total Applications
+15.0%
Interview Lift
796
Avg Prosecution Days
Based on 1293 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
31.0%
§102 Novelty
40.3%
§103 Obviousness
27.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19080718 DAMPING ELEMENT AND RETAINING SYSTEM FOR A VEHICLE Non-Final OA HELLA GmbH & Co. KGaA
18946513 DEVICES, SYSTEMS, AND METHODS FOR HANGING FLUID RESERVOIRS IN SYSTEMS TO SUPPLY FLUIDS TO AN ENDOSCOPE Non-Final OA Boston Scientific Scimed, Inc.
18918718 WAREWASH RACK SYSTEM AND WAREWASHER WITH ASSOCIATED WAREWASH RACK SYSTEM Final Rejection ILLINOIS TOOL WORKS INC.
19223853 Slot Structure, Support, Support Apparatus, Lock Mechanism, and Vehicle Non-Final OA Yinwang Intelligent Technologies Co., Ltd.
19052543 SECTOR FRAME ANTENNA MOUNT ASSEMBLIES Non-Final OA Outdoor Wireless Networks LLC
19032604 WALL-MOUNTABLE ACCESSORY Final Rejection Salto, LLC

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