Prosecution Insights
Last updated: October 26, 2026

Tuan C To, USPTO Patent Examiner

Listed by the USPTO as TO, TUAN C

Tech Center 3600 • Art Units: 3661 3662 3663 3667

This examiner grants 86% of resolved cases

Analysis

TO, TUAN C. is assigned to USPTO tech center 3600 and art unit 3661. The record includes 1018 resolved cases, an allowance rate of 86.1%, and a median of 1040 days to allowance. Interviews show a 10.0% lift. The large record supports a favorable allowance expectation, with interviews providing a positive but limited additional signal.

The leading companies are Kabushiki Kaisha Toshiba, Geotab Inc., and Shenzhen Yinwang Intelligent Technology Co., Ltd. OBLON, MCCLELLAND, MAIER & NEUSTADT, L.L.P. is the only listed leading firm. Practitioners handling connected devices, automotive technology, and electronics can use the profile to guide examiner-specific claim and interview preparation.

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

Performance Statistics

86.1%
Allow Rate
+34.1% vs TC avg
1,029
Total Applications
+10.0%
Interview Lift
1040
Avg Prosecution Days
Based on 1018 resolved cases, 2023–2026

Rejection Statute Breakdown

10.7%
§101 Eligibility
9.4%
§102 Novelty
56.5%
§103 Obviousness
16.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19291202 Method For Operating An Assistance System Of An Ego Vehicle Non-Final OA Volkswagen Aktiengesellschaft
19238109 AUTONOMOUS VEHICLE DELIVERY INGESTION AND ROUTING Non-Final OA Uber Technologies, Inc.

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Frequently Asked Questions

What is examiner Tuan C To's allowance rate?

86.1% of resolved applications examined by Tuan C To were allowed (1,018 resolved cases), compared with 77.3% across Art Unit 3661 over the last five years.

Does an interview help with examiner Tuan C To?

This examiner's interview lift is +10.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tuan C To take to allow a patent?

Applications allowed by Tuan C To took 1,040 days on average from filing to allowance.

Which art unit does examiner Tuan C To work in?

Tuan C To examines applications in Art Unit 3661 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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