Prosecution Insights
Last updated: October 02, 2026

Examiner: DUREN, TIMOTHY EDWARD

Tech Center 2800 • Art Units: 2811 2817

This examiner grants 81% of resolved cases

Analysis

Timothy Edward Duren is an examiner in Tech Center 2800, working within Art Unit 2811. He has reached resolutions on 53 cases. This caseload provides an initial basis for evaluating his examination patterns in the fields of semiconductors and electronic components. While the sample size is smaller than some other examiners, these 53 cases offer a clear picture of his early prosecution tendencies.

The examiner has a high allowance rate of 81.1 percent. This suggests a very favorable environment for applicants. He also shows an interview lift of 11.6 percent. This positive lift indicates that interviews are a beneficial tool for overcoming rejections. The 11.6 percent increase in allowance probability following an interview is an indication that direct communication is a useful strategy for practitioners working with Duren to resolve outstanding issues.

The median days to allowance for his cases is 1238. This timeframe indicates a longer prosecution duration. The combination of an 81.1 percent allowance rate and a 1238-day median suggests a successful but potentially time-consuming path to grant. Practitioners should consider the 11.6 percent interview lift as a helpful tactic to navigate this 1238-day timeline and ensure that their applications reach a favorable resolution as efficiently as possible.

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

Performance Statistics

81.1%
Allow Rate
+13.1% vs TC avg
86
Total Applications
+11.6%
Interview Lift
1238
Avg Prosecution Days
Based on 53 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
33.1%
§102 Novelty
51.5%
§103 Obviousness
15.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17969942 THREE-DIMENSIONAL SEMICONDUCTOR MEMORY DEVICE AND DATA STORAGE SYSTEM INCLUDING THE SAME Final Rejection SAMSUNG ELECTRONICS CO., LTD.
17782133 MOUNTED IMAGING DEVICE WITH HEAT DISSIPATION Non-Final OA HITACHI ASTEMO, LTD.
17823162 SEMICONDUCTOR CONDUCTIVE PILLAR DEVICE AND METHOD Non-Final OA Micron Technology, Inc.
18107658 MULTICHANNEL TRANSISTORS WITH SOURCE/DRAIN REGIONS HAVING WAVY INNER PROFILES AND METHODS FOR MANUFACTURING THEREOF Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18175878 Method for Manufacturing Metal Zero Layer Final Rejection Shanghai Huali Integrated Circuit Corporation

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