Prosecution Insights
Last updated: October 26, 2026

David E Sosnowski, USPTO Patent Examiner

Listed by the USPTO as SOSNOWSKI, DAVID E

Tech Center 3700 • Art Units: 3673 3745

This examiner grants 67% of resolved cases

Analysis

SOSNOWSKI, DAVID E is assigned to tech center 3700 and art unit 3673. The record contains 368 resolved cases, an allowance rate of 67.4%, and a median of 1015 days to allowance. The case volume permits meaningful historical review, while the allowance rate reflects a record with both successful and unsuccessful prosecution outcomes.

Interviews are associated with a 13.2% lift in allowance rate. Seatmate Intellectual Properties, Stryker Corporation, and Purple Innovation LLC are the leading companies shown. The principal firms are DILWORTH & BARRESE, LLP, DINSMORE & SHOHL LLP, and FOLEY & LARDNER LLP. The median timing supports planning for a prosecution process extending beyond an initial examination cycle.

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

Performance Statistics

67.4%
Allow Rate
-2.6% vs TC avg
403
Total Applications
+13.2%
Interview Lift
1015
Avg Prosecution Days
Based on 368 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
25.9%
§102 Novelty
39.4%
§103 Obviousness
29.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18390075 Patient Support Apparatus With Deck Section Lift-Off Limiter Non-Final OA Stryker Corporation

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Frequently Asked Questions

What is examiner David E Sosnowski's allowance rate?

67.4% of resolved applications examined by David E Sosnowski were allowed (368 resolved cases), compared with 46.4% across Art Unit 3673 over the last five years.

Does an interview help with examiner David E Sosnowski?

This examiner's interview lift is +13.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner David E Sosnowski take to allow a patent?

Applications allowed by David E Sosnowski took 1,015 days on average from filing to allowance.

Which art unit does examiner David E Sosnowski work in?

David E Sosnowski examines applications in Art Unit 3673 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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