Prosecution Insights
Last updated: May 29, 2026

Examiner: KESSEL, MARIS R

Tech Center 1700 • Art Units: 1699 1758 1759 1795

This examiner grants 50% of resolved cases

Performance Statistics

50.2%
Allow Rate
-14.8% vs TC avg
441
Total Applications
+50.4%
Interview Lift
1380
Avg Prosecution Days
Based on 438 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
8.3%
§102 Novelty
71.7%
§103 Obviousness
13.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18216802 METHODS AND APPARATUS TO POSITION THIN-FILM SPECIMENS Non-Final OA Illinois Tool Works Inc.
17233078 SYSTEMS AND METHODS FOR PERSONALIZED SAMPLE ANALYSIS Final Rejection The Trustees of Princeton University

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