Prosecution Insights
Last updated: October 26, 2026

Rachel T Sippel, USPTO Patent Examiner

Listed by the USPTO as SIPPEL, RACHEL T

Tech Center 3700 • Art Units: 3636 3771 3785

This examiner grants 52% of resolved cases

Analysis

SIPPEL, RACHEL T works in Tech Center 3700 and art unit 3636. The profile records 813 resolved cases and an allowance rate of 52.5%. The interview lift is 58.2%, which is greater than the allowance rate and makes interview preparation a prominent consideration. The median time to allowance is 1409 days, supporting early development of positions that can be presented clearly during prosecution.

The listed companies are James L Orrington Ii D D S P C, Fisher & Paykel Healthcare Limited, and Samsung Electronics Co., Ltd. The listed firms are Arch & Lake LLP, Carlson, Caspers, Vandenburgh & Lindquist, P.A., and COOLEY LLP. Counsel can use this substantial history to plan interviews, preserve fallback claims, and account for extended prosecution timing.

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

Performance Statistics

52.5%
Allow Rate
-17.5% vs TC avg
858
Total Applications
+58.2%
Interview Lift
1409
Avg Prosecution Days
Based on 813 resolved cases, 2023–2026

Rejection Statute Breakdown

4.1%
§101 Eligibility
15.3%
§102 Novelty
49.0%
§103 Obviousness
26.6%
§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
18315102 RESPIRATOR DEVICES AND FOLDING PATTERNS FOR RESPIRATOR FILTERS Non-Final OA Honeywell Safety Products USA, Inc.
18959482 SLIDING ROD NESTING STRUCTURE Non-Final OA Zhejiang Red And Black Technology Co.,Ltd

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Frequently Asked Questions

What is examiner Rachel T Sippel's allowance rate?

52.5% of resolved applications examined by Rachel T Sippel were allowed (813 resolved cases), compared with 64.2% across Art Unit 3636 over the last five years.

Does an interview help with examiner Rachel T Sippel?

This examiner's interview lift is +58.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Rachel T Sippel take to allow a patent?

Applications allowed by Rachel T Sippel took 1,409 days on average from filing to allowance.

Which art unit does examiner Rachel T Sippel work in?

Rachel T Sippel examines applications in Art Unit 3636 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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