Prosecution Insights
Last updated: October 02, 2026

Examiner: DITMER, KATHRYN ELIZABETH

Tech Center 3700 • Art Units: 3764 3778 3782 3785

This examiner grants 58% of resolved cases

Analysis

Kathryn Elizabeth Ditmer serves as an examiner in Tech Center 3700 and Art Unit 3764. The data indicates 767 resolved cases with an allowance rate of 57.6 percent. The median days to allowance is 1294. This 1294-day period is the time required for the 767 cases to reach a resolution. The 57.6 percent allowance rate is a metric for applicants to consider. These data points provide a perspective on the prosecution cycle in this unit.

The interview lift is 49.6 percent. This 49.6 percent lift can be viewed in relation to the 57.6 percent allowance rate. Practitioners might use the 49.6 percent lift to inform their approach to office actions. The 767 resolved cases show the examiner's experience in Art Unit 3764. With a median pendency of 1294 days, the timeline for prosecution is established. The 57.6 percent allowance rate and 49.6 percent interview lift are data points for the cases resolved. These numbers help define the prosecution landscape.

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

Performance Statistics

57.6%
Allow Rate
-12.4% vs TC avg
814
Total Applications
+49.6%
Interview Lift
1294
Avg Prosecution Days
Based on 767 resolved cases, 2023–2026

Rejection Statute Breakdown

2.4%
§101 Eligibility
14.9%
§102 Novelty
42.7%
§103 Obviousness
32.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
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
18603423 CPAP SYSTEM, CPAP DEVICE, AND CPAP DEVICE PROGRAM Non-Final OA Murata Manufacturing Co., Ltd.
17730774 INTEGRATED DISPLAY FOR SEALED FACE MASKS Final Rejection Federal Express Corporation
18266142 INHALER ARTICLE AND MOUTHPIECE FOR USE WITH THE SAME Final Rejection Philip Morris Products S.A.
17762248 INHALER ARTICLE WITH A TWISTED DISTAL END ELEMENT Non-Final OA PHILIP MORRIS PRODUCTS S.A.
18732007 ABSORBENT ARTICLE Non-Final OA KIMBERLY-CLARK WORLDWIDE, INC.
18042790 BREATHING APPARATUS AND CHARGING SYSTEM Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
18530327 BREATHING GAS HUMIDIFIER Non-Final OA Drägerwerk AG & Co. KGaA
18474965 SPIRALLY REINFORCED TUBES FOR MEDICAL SYSTEMS Final Rejection Fisher & Paykel Healthcare Limited
17661612 CONTROL OF HUMIDIFIER CHAMBER TEMPERATURE FOR ACCURATE HUMIDITY CONTROL 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
17284547 WATER RESERVOIR FOR A DEVICE FOR GAS HUMIDIFICATION IN LAPAROSCOPY Final Rejection NOVANTA MEDICAL GMBH

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