Prosecution Insights
Last updated: October 27, 2026

Joseph Steven Del Sole, USPTO Patent Examiner

Listed by the USPTO as DEL SOLE, JOSEPH STEVEN

Tech Center 4100 • Art Units: 1700 1743 1744 1754 1761 1763 1791 4100

This examiner grants 37% of resolved cases

Analysis

DEL SOLE, JOSEPH STEVEN is a USPTO patent examiner in tech center 4100 and art unit 1700. The profile records 139 resolved cases, with an allowance rate of 36.7%. The median time to allowance is 1209 days. Interview lift is 14.1%, indicating that interviews have a limited reported association with allowance results.

The principal companies are Henkel AG & Co. KGaA, The Japan Steel Works Ltd., and Whitewater West Industries, Ltd. The leading firms are BUCHALTER, FOLEY & LARDNER LLP, and Fox Rothschild LLP. Applicants should anticipate the need for focused claim analysis and should not rely on interviews as a substitute for a strong written record.

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

Performance Statistics

36.7%
Allow Rate
-23.3% vs TC avg
147
Total Applications
+14.1%
Interview Lift
1209
Avg Prosecution Days
Based on 139 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
20.2%
§102 Novelty
53.4%
§103 Obviousness
19.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17817739 DEBONDABLE PRESSURE SENSITIVE ADHESIVES AND USES THEREOF Non-Final OA Henkel AG & CO, KGaA
18265674 CUTTER BLADE AND GRANULATION APPARATUS Final Rejection THE JAPAN STEEL WORKS, LTD.
16608065 POLYMERS Final Rejection The University of Liverpool

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Frequently Asked Questions

What is examiner Joseph Steven Del Sole's allowance rate?

36.7% of resolved applications examined by Joseph Steven Del Sole were allowed (139 resolved cases), compared with 40.4% across Art Unit 1700 over the last five years.

Does an interview help with examiner Joseph Steven Del Sole?

This examiner's interview lift is +14.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Joseph Steven Del Sole take to allow a patent?

Applications allowed by Joseph Steven Del Sole took 1,209 days on average from filing to allowance.

Which art unit does examiner Joseph Steven Del Sole work in?

Joseph Steven Del Sole examines applications in Art Unit 1700 in Tech Center 4100.

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