Prosecution Insights
Last updated: October 27, 2026

Kathryn Elizabeth Ditmer, USPTO Patent Examiner

Listed by the USPTO as DITMER, KATHRYN ELIZABETH

Tech Center 3700 • Art Units: 3764 3778 3782 3785

This examiner grants 58% of resolved cases

Analysis

DITMER, KATHRYN ELIZABETH examines applications in Tech Center 3700 and Art Unit 3764. The record includes 769 resolved cases, with a 57.6% allowance rate and a median of 1294 days to allowance. The 49.4% interview lift is a prominent feature, indicating that interviews are associated with materially improved allowance outcomes.

The listed companies are Fisher & Paykel Healthcare Limited, RESMED Pty Ltd., and Philip Morris International Inc. The leading firms are Knobbe, Martens, Olson & Bear, LLP, NIXON & VANDERHYE, PC, and Bayramoglu Law Offices LLC. Counsel may benefit from treating interviews as a central part of prosecution planning in this record.

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
823
Total Applications
+49.4%
Interview Lift
1294
Avg Prosecution Days
Based on 769 resolved cases, 2023–2026

Rejection Statute Breakdown

2.4%
§101 Eligibility
14.9%
§102 Novelty
42.4%
§103 Obviousness
32.5%
§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
18762709 ABSORBENT ARTICLE WITH A WAISTBAND AND LEG CUFFS HAVING GATHERS Non-Final OA The Procter & Gamble Company
17730774 INTEGRATED DISPLAY FOR SEALED FACE MASKS Final Rejection Federal Express Corporation
17762248 INHALER ARTICLE WITH A TWISTED DISTAL END ELEMENT Non-Final OA PHILIP MORRIS PRODUCTS S.A.
18680916 HUMIDIFICATION OF RESPIRATORY GASES Non-Final OA Fisher & Paykel Healthcare Limited
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
16967320 COLLAPSIBLE CONDUIT, PATIENT INTERFACE AND HEADGEAR CONNECTOR Non-Final OA Fisher & Paykel Healthcare Limited
17706702 METHOD OF JETTING A FLUID THAT IS SYNCHRONIZED WITH BREATHING Final Rejection BRADY WORLDWIDE, INC.
17740820 VENTILATION APPARATUS FOR AIRCRAFT Final Rejection Aviation Works Ltd
17909364 ADJUSTABLE AIRWAY STABILIZATION SYSTEM FOR PATIENT FACIAL GEOMETRIES OF VARIOUS SIZES AND FOR PEDIATRIC AND NEONATAL APPLICATIONS Final Rejection Securisyn Medical, LLC
18108817 Intubation Stylet and Related Methods Final Rejection Individual inventor

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Kathryn Elizabeth Ditmer's allowance rate?

57.6% of resolved applications examined by Kathryn Elizabeth Ditmer were allowed (769 resolved cases), compared with 0.0% across Art Unit 3764 over the last five years.

Does an interview help with examiner Kathryn Elizabeth Ditmer?

This examiner's interview lift is +49.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Kathryn Elizabeth Ditmer take to allow a patent?

Applications allowed by Kathryn Elizabeth Ditmer took 1,294 days on average from filing to allowance.

Which art unit does examiner Kathryn Elizabeth Ditmer work in?

Kathryn Elizabeth Ditmer examines applications in Art Unit 3764 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month