Prosecution Insights
Last updated: October 26, 2026

Caitlyn Mingyun Sun, USPTO Patent Examiner

Listed by the USPTO as SUN, CAITLYN MINGYUN

Tech Center 3700 • Art Units: 1645 1795 3791

This examiner grants 64% of resolved cases

Analysis

Sun, Caitlyn Mingyun works in Tech Center 3700 and Art Unit 1645. The profile covers 328 resolved cases and reports a 63.7% allowance rate. The record is large enough to provide practitioners with a useful reference when planning claim scope and anticipating prosecution issues.

The interview lift is 11.8%, showing a positive association between interviews and allowance outcomes in the reported cases. The median time to allowance is 1105 days. The listed companies are Hitachi, the University of Cincinnati, and McMaster University. The listed firms include Knobbe Martens, SMART & BIGGAR, and WOOD, HERRON & EVANS.

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

Performance Statistics

63.7%
Allow Rate
-6.3% vs TC avg
401
Total Applications
+11.8%
Interview Lift
1105
Avg Prosecution Days
Based on 328 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
17.0%
§102 Novelty
50.5%
§103 Obviousness
28.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18708750 METHOD FOR EVALUATING THE CORROSION RESISTANCE OF A SURFACE Final Rejection SAFRAN LANDING SYSTEMS
18635090 SENSOR UNIT OF A NUCLEIC ACID ANALYSIS SYSTEM Non-Final OA Robert Bosch GmbH
18841122 PORTABLE ELECTROCHEMICAL DEVICE FOR BIOSENSING AND METHODS OF MAKING AND USES THEREOF Non-Final OA McMaster University
18026043 ELECTROCHEMICAL BIOSENSOR FOR TARGET ANALYTE DETECTION Final Rejection McMaster University
18302588 ELECTROCHEMICAL SENSOR FOR SIMULTANEOUS DETECTION OF DOPAMINE AND SEROTONIN AND MANUFACTURING METHOD THEREOF Final Rejection KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
19054056 ELECTROPHORETIC METHODS FOR SPATIAL ANALYSIS Non-Final OA 10x Genomics, Inc.
18670230 REGENERATION OF A CHEMICAL SENSOR Final Rejection THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18871231 METHOD FOR CONTINUOUSLY USING SEPARATION MEDIUM Non-Final OA HITACHI HIGH-TECH CORPORATION
18294267 ELECTROLYTE ANALYZER AND ANALYSIS METHOD Non-Final OA HITACHI HIGH-TECH CORPORATION
18246009 DEVICES AND METHODS FOR URINE SAMPLE ANALYSIS Non-Final OA Roche Sequencing Solutions, Inc.
18879269 REGULATING THE ELECTROCHEMICAL REDOX BEHAVIOR OF SEMICONDUCTING POLYMERS ON SOFT AND STRETCHABLE SUBSTRATES AND METHODS OF USE Non-Final OA The University of Hong Kong
18722440 HIGH VOLTAGE DRIVING USING TOP PLANE SWITCHING Non-Final OA Nuclera LTD

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Frequently Asked Questions

What is examiner Caitlyn Mingyun Sun's allowance rate?

63.7% of resolved applications examined by Caitlyn Mingyun Sun were allowed (328 resolved cases), compared with 49.5% across Art Unit 1645 over the last five years.

Does an interview help with examiner Caitlyn Mingyun Sun?

This examiner's interview lift is +11.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Caitlyn Mingyun Sun take to allow a patent?

Applications allowed by Caitlyn Mingyun Sun took 1,105 days on average from filing to allowance.

Which art unit does examiner Caitlyn Mingyun Sun work in?

Caitlyn Mingyun Sun examines applications in Art Unit 1645 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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