Prosecution Insights
Last updated: October 02, 2026

Examiner: LEWIS, CHERYL RENEA

Tech Center 2400 • Art Units: 2151 2154 2155 2166 2167 2492

This examiner grants 93% of resolved cases

Analysis

Cheryl Renea Lewis serves in Art Unit 2151 within Tech Center 2400. The examiner has managed 507 resolved cases, resulting in an allowance rate pct of 92.5. This allowance rate pct indicates the frequency of successful outcomes for applications assigned to this docket. Practitioners should note the interview lift pct of 8.2. This interview lift pct suggests that direct engagement with the examiner is associated with an increased probability of allowance. For applications that are granted, the median days to allowance is 892.

The 892 median days to allowance provides a benchmark for the expected duration of the patent acquisition process. By analyzing the 507 resolved cases, one can see the historical record of practice in Art Unit 2151. The 92.5 allowance rate pct and 8.2 interview lift pct provide metrics for evaluating the prosecution environment. These figures assist in the development of a strategy for patent applications. Understanding these data points is useful for managing expectations and resources during the examination phase.

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

Performance Statistics

92.7%
Allow Rate
+34.7% vs TC avg
519
Total Applications
+7.9%
Interview Lift
892
Avg Prosecution Days
Based on 509 resolved cases, 2023–2026

Rejection Statute Breakdown

22.1%
§101 Eligibility
27.6%
§102 Novelty
29.1%
§103 Obviousness
3.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18604336 AUTOMATED ONTOLOGY MAINTENANCE Non-Final OA SAP SE

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