Prosecution Insights
Last updated: October 27, 2026

Xuan Marian Thai, USPTO Patent Examiner

Listed by the USPTO as THAI, XUAN MARIAN

Tech Center 3700 • Art Units: 3715

This examiner grants 2% of resolved cases

Analysis

Xuan Marian Thai is an examiner in Tech Center 3700, Art Unit 3715, with 179 resolved cases. The allowance rate is 2.2%. The data shows an interview lift of 5.9%, and the median days to allowance for successful cases is 1466.

The primary company listed is Shanghai Lilith Technology Corporation, represented by Stevens Law Group. The 2.2% allowance rate suggests a difficult environment for applicants seeking to secure patent rights. With 179 resolved cases, this rate is based on a significant sample size. The 1466 days median pendency further illustrates the duration of the prosecution path. While the 5.9% interview lift is positive, it may not be enough to overcome the overall probability of grant. Practitioners should prepare for extensive prosecution when assigned to this examiner in Tech Center 3700. The 1466 days median is a key figure for managing expectations. The 2.2% allowance rate and 179 resolved cases provide a clear view of the challenges in Art Unit 3715.

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

Performance Statistics

2.2%
Allow Rate
-67.8% vs TC avg
195
Total Applications
+5.9%
Interview Lift
1466
Avg Prosecution Days
Based on 179 resolved cases, 2023–2026

Rejection Statute Breakdown

23.0%
§101 Eligibility
17.2%
§102 Novelty
39.7%
§103 Obviousness
17.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18698668 Method for Controlling Virtual Objects in Virtual Environment, Medium, and Electronic Device Non-Final OA Shanghai Lilith Technology Corporation

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Frequently Asked Questions

What is examiner Xuan Marian Thai's allowance rate?

2.2% of resolved applications examined by Xuan Marian Thai were allowed (179 resolved cases), compared with 56.8% across Art Unit 3715 over the last five years.

Does an interview help with examiner Xuan Marian Thai?

This examiner's interview lift is +5.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Xuan Marian Thai take to allow a patent?

Applications allowed by Xuan Marian Thai took 1,466 days on average from filing to allowance.

Which art unit does examiner Xuan Marian Thai work in?

Xuan Marian Thai examines applications in Art Unit 3715 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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