Prosecution Insights
Last updated: October 04, 2026

Examiner: KALLIS, RUSSELL

Tech Center 1600 • Art Units: 1638 1663

This examiner grants 87% of resolved cases

Analysis

Examiner Russell Kallis operates within Tech Center 1600 and Art Unit 1638, where he has managed 1148 resolved cases. The data shows an allowance rate pct of 86.9 and a median days to allowance of 834. For practitioners, the combination of 1148 resolved cases and an 86.9 percent allowance rate provides a statistical basis for predicting prosecution outcomes. The 834 days to allowance establishes a timeline for case resolution in Art Unit 1638.

The interview lift pct of 7.9 indicates that personal engagement with the examiner results in an increase in the probability of success. This 7.9 percent lift suggests that direct communication can be a useful tool for resolving specific examiner concerns. Practitioners should view the 1148 resolved cases as a sample size that supports these performance metrics. The 86.9 percent allowance rate remains the primary indicator of success for applications assigned to this examiner in Tech Center 1600.

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

Performance Statistics

86.9%
Allow Rate
+26.9% vs TC avg
1,154
Total Applications
+7.9%
Interview Lift
834
Avg Prosecution Days
Based on 1148 resolved cases, 2023–2026

Rejection Statute Breakdown

5.4%
§101 Eligibility
19.8%
§102 Novelty
14.1%
§103 Obviousness
51.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17781797 Compositions and Methods for Producing Tobacco Plants and Products Having Altered Alkaloid Levels Final Rejection ALTRIA CLIENT SERVICES LLC
18465634 ALTERATION OF TOBACCO ALKALOID CONTENT THROUGH MODIFICATION OF SPECIFIC CYTOCHROME P450 GENES Non-Final OA University of Kentucky Research Foundation
18605199 WATERMELON VARIETY NUN 32117 WMW Non-Final OA NUNHEMS B.V.

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