Prosecution Insights
Last updated: October 27, 2026

Michael Xuefei Tang, USPTO Patent Examiner

Listed by the USPTO as TANG, MICHAEL XUEFEI

Tech Center 3600 • Art Units: 1735 2115 3654 3662

This examiner grants 84% of resolved cases

Analysis

TANG, MICHAEL XUEFEI examines in tech center 3600 and art unit 1735. The profile covers 329 resolved cases, with an allowance rate of 83.6% and a median of 902 days to allowance. Interview lift is 18.9%, indicating a positive interview-related association in the recorded cases.

The leading companies are Siemens Aktiengesellschaft, Applied Materials Inc., and ABB Schweiz AG. The listed firms are Bayramoglu Law Offices LLC, Calfee, Halter & Griswold LLP, and Fitch, Even, Tabin & Flannery, LLP. The outcome pattern supports active prosecution planning, while the median timing suggests that applicants should preserve flexibility for a process extending beyond the initial examination cycle.

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

Performance Statistics

83.6%
Allow Rate
+31.6% vs TC avg
357
Total Applications
+18.9%
Interview Lift
902
Avg Prosecution Days
Based on 329 resolved cases, 2023–2026

Rejection Statute Breakdown

15.3%
§101 Eligibility
11.7%
§102 Novelty
49.8%
§103 Obviousness
15.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18616621 Pre-Trained Rule Engine and Method to Provide Assistance to Correct Abnormal Events in Equipment Non-Final OA ABB Schweiz AG
18600250 ADDITIVE MANUFACTURING SYSTEMS WITH ERROR CORRECTION AND ASSOCIATED METHODS Final Rejection Align Technology, Inc.
18937812 DOMAIN CONTROLLER, ENERGY STORAGE SYSTEM AND CONTROL METHOD OF ENERGY STORAGE SYSTEM Non-Final OA Contemporary Amperex Technology (Hong Kong) Limited
18938281 TRANSFORMER STATUS MONITORING USING FIBER SENSING Non-Final OA NEC Laboratories America, Inc.
18839631 METHOD FOR CONTROLLING A MACHINE BY MEANS OF A LEARNING-BASED CONTROL AGENT, AND CONTROLLER Non-Final OA Siemens Aktiengesellschaft
17786404 Integrity Monitoring System, Method for Operating an Integrity Monitoring System, and Integrity Monitoring Unit Final Rejection Siemens Aktiengesellschaft
18848597 SYSTEM AND METHOD FOR MONITORING INDUSTRIAL PLANT EQUIPMENT Non-Final OA BASF SE
18791478 METHOD AND SYSTEM FOR RATIONALIZING ALARMS Non-Final OA Honeywell International Inc.
18525660 FAULT EVENT RECOVERY IN MULTI-SLOT PROCESSING CHAMBERS Final Rejection Applied Materials, Inc.
18200921 SUBSTRATE PLACEMENT OPTIMIZATION USING SUBSTRATE MEASUREMENTS Non-Final OA APPLIED MATERIALS, INC.
17822009 SUBSTRATE PLACEMENT OPTIMIZATION USING SUBSTRATE MEASUREMENTS Non-Final OA APPLIED MATERIALS, INC.
18803378 GENERATIVE DESIGN SHAPE OPTIMIZATION WITH SINGULARITIES AND DISCONNECTION PREVENTION FOR COMPUTER AIDED DESIGN AND MANUFACTURING Non-Final OA Autodesk, Inc.
18600806 ANALYSIS METHOD AND ANALYSIS DEVICE FOR SEMICONDUCTOR MANUFACTURING PROCESS Final Rejection United Microelectronics Corp

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Frequently Asked Questions

What is examiner Michael Xuefei Tang's allowance rate?

83.6% of resolved applications examined by Michael Xuefei Tang were allowed (329 resolved cases), compared with 48.9% across Art Unit 1735 over the last five years.

Does an interview help with examiner Michael Xuefei Tang?

This examiner's interview lift is +18.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Michael Xuefei Tang take to allow a patent?

Applications allowed by Michael Xuefei Tang took 902 days on average from filing to allowance.

Which art unit does examiner Michael Xuefei Tang work in?

Michael Xuefei Tang examines applications in Art Unit 1735 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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