Prosecution Insights
Last updated: August 18, 2026

Examiner: DITMER, KATHRYN ELIZABETH

Tech Center 3700 • Art Units: 3764 3778 3782 3785

This examiner grants 58% of resolved cases

Performance Statistics

57.7%
Allow Rate
-12.3% vs TC avg
812
Total Applications
+49.6%
Interview Lift
1293
Avg Prosecution Days
Based on 763 resolved cases, 2023–2026

Rejection Statute Breakdown

2.4%
§101 Eligibility
14.9%
§102 Novelty
42.5%
§103 Obviousness
32.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17371460 VACCINE ADMINISTRATION APPARATUS AND SINGLE DOSE CHAMBERS Final Rejection Stamford Devices Limited
18457277 HEAT AND MOISTURE EXCHANGER DEVICE FOR A PATIENT INTERFACE Non-Final OA ResMed Pty Ltd
18150421 POWER SUPPLY FOR RESPIRATORY THERAPY DEVICE Final Rejection ResMed Pty Ltd
17875103 WIRE HEATED TUBE WITH TEMPERATURE CONTROL SYSTEM, TUBE TYPE DETECTION, AND ACTIVE OVER TEMPERATURE PROTECTION FOR HUMIDIFIER FOR RESPIRATORY APPARATUS Final Rejection ResMed Pty Ltd
17509741 Jet Air Curtain For Personal Respiratory Protection Non-Final OA THE REGENTS OF THE UNIVERSITY OF MICHIGAN
18603423 CPAP SYSTEM, CPAP DEVICE, AND CPAP DEVICE PROGRAM Non-Final OA Murata Manufacturing Co., Ltd.
18474965 SPIRALLY REINFORCED TUBES FOR MEDICAL SYSTEMS Final Rejection Fisher & Paykel Healthcare Limited
17310155 ADJUSTABLE EXPIRATORY RELIEF IN RESPIRATORY THERAPY Non-Final OA Fisher & Paykel Healthcare Limited
17046152 HEADGEAR FOR USE WITH A PATIENT INTERFACE OF A RESPIRATORY THERAPY SYSTEM Non-Final OA Fisher & Paykel Healthcare Limited
16967320 COLLAPSIBLE CONDUIT, PATIENT INTERFACE AND HEADGEAR CONNECTOR Non-Final OA Fisher & Paykel Healthcare Limited
18042790 BREATHING APPARATUS AND CHARGING SYSTEM Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
17706702 METHOD OF JETTING A FLUID THAT IS SYNCHRONIZED WITH BREATHING Final Rejection BRADY WORLDWIDE, INC.

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