Prosecution Insights
Last updated: October 02, 2026

Examiner: LUO, DAVID S

Tech Center 3600 • Art Units: 2837 2846 3611

This examiner grants 90% of resolved cases

Analysis

David S. Luo handles cases in Art Unit 2837 within Tech Center 3600. With 1151 resolved cases, the examiner has a high allowance rate of 90.4 percent. This suggests a very positive outlook for applicants in this unit. The 90.4 percent rate indicates that the vast majority of applications reaching a final resolution are successful, making this a highly favorable environment for patent acquisition.

The interview lift is 6.5 percent. While interviews provide a benefit, the high baseline allowance rate of 90.4 percent suggests that success is often achieved through standard prosecution. Practitioners may still find interviews useful for clarification, even with a modest 6.5 percent lift. This figure indicates that while verbal engagement is helpful, it is not the primary driver of the high success rate seen in this unit.

The median days to allowance is 788. This is a relatively short timeline for reaching a grant, representing just over two years. The efficiency of this unit is demonstrated by both the 90.4 percent allowance rate and the 788-day median pendency. These metrics provide a strong foundation for predicting a fast and successful outcome for applications assigned to this examiner.

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

Performance Statistics

90.4%
Allow Rate
+38.4% vs TC avg
1,161
Total Applications
+6.5%
Interview Lift
788
Avg Prosecution Days
Based on 1151 resolved cases, 2023–2026

Rejection Statute Breakdown

1.6%
§101 Eligibility
48.5%
§102 Novelty
47.1%
§103 Obviousness
2.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18968562 WASHING MACHINE AND CONTROL METHOD THEREFOR Non-Final OA Samsung Electronics Co., Ltd.
18946449 TECHNIQUE FOR CONTROLLING MOTOR IN ELECTRIC WORK MACHINE Non-Final OA MAKITA CORPORATION
18894475 SEMICONDUCTOR DEVICE, MOTOR SYSTEM, AND VEHICLE Non-Final OA ROHM CO., LTD.
18982943 MOTOR DRIVING SYSTEM, VEHICLE AND DRIVING SYSTEM CONTROL METHOD Non-Final OA BYD COMPANY LIMITED

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