Prosecution Insights
Last updated: October 02, 2026

Examiner: SIPPEL, RACHEL T

Tech Center 3700 • Art Units: 3771 3785

This examiner grants 52% of resolved cases

Analysis

Rachel T Sippel is an examiner in Art Unit 3771, part of Tech Center 3700. Across 811 resolved cases, the examiner maintains an allowance rate of 52.4%. This suggests that more than half of the applications result in a grant. The interview lift of 58.3% is very high, indicating that interviews are exceptionally effective for reaching an allowance. The median days to allowance is 1410.

Given the 52.4% allowance rate, practitioners should strongly consider interviews to navigate the 1410-day timeline in Art Unit 3771. The 58.3% interview lift is one of the most significant metrics for this examiner. Across 811 resolved cases, the examiner has demonstrated that verbal advocacy is highly effective in Tech Center 3700. Strategy should prioritize direct engagement to improve the 52.4% baseline grant probability. The 1410-day median pendency should be factored into all planning.

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

Performance Statistics

52.4%
Allow Rate
-17.6% vs TC avg
846
Total Applications
+58.3%
Interview Lift
1410
Avg Prosecution Days
Based on 811 resolved cases, 2023–2026

Rejection Statute Breakdown

4.2%
§101 Eligibility
15.3%
§102 Novelty
49.3%
§103 Obviousness
26.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17586926 METHOD AND APPARATUS FOR RECOGNIZING GAIT TASK Non-Final OA Samsung Electronics Co., Ltd.
18296049 REPLACEABLE FILTER SYSTEMS FOR MECHANICAL VENTILATION Non-Final OA Covidien LP
18109506 SYSTEMS AND METHODS FOR INTELLIGENT GAS SOURCE MANAGEMENT Non-Final OA Mallinckrodt Pharmaceuticals Ireland Limited
17603646 AEROSOLIZED COMPOSITIONS COMPRISING MITOCHONDRIA AND METHODS OF USE THEREOF Final Rejection Children`s Medical Center Corporation
18467576 NASAL CANNULA WITH FLOW RESTRICTOR Final Rejection Fisher & Paykel Healthcare Limited
18174511 BREATHING ASSISTANCE APPARATUS WITH SERVICEABILITY FEATURES Non-Final OA Fisher & Paykel Healthcare Limited
17442321 MUFFLER Final Rejection Fisher & Paykel Healthcare Limited
18312837 COMPRESSION GARMENT Final Rejection Koya Medical, Inc.
18001288 HIGH QUALITY MASK Non-Final OA NANA PRODUCTS LLC
17964392 VOICE PROSTHESIS WITH UMBRELLA VALVE Non-Final OA Freudenberg Medical, LLC

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