Prosecution Insights
Last updated: October 02, 2026

Examiner: UNDERDAHL, THANE E

Tech Center 1600 • Art Units: 1651 1652 1656 1657 1699

This examiner grants 59% of resolved cases

Analysis

Thane E. Underdahl is an examiner in Tech Center 1600 and Art Unit 1651, where he has handled 551 resolved cases. His allowance rate is 58.8%, which suggests a more challenging examination process than in some other units. This 58.8% rate serves as a baseline for applicants to gauge their chances of success. The 551 cases resolved by this examiner offer a reliable sample size for these performance metrics.

A standout data point for this examiner is the interview lift of 50.8%, which is exceptionally high. This figure indicates that conducting an interview is a highly effective strategy for moving an application toward allowance. Furthermore, the median days to allowance is 1358, suggesting a relatively long prosecution cycle. The high 50.8% lift suggests that the time spent in an interview can be a pivotal investment in overcoming the challenges that contribute to the 1358-day median pendency.

Practitioners should prioritize scheduling interviews early in the process given the 50.8% lift observed across 551 cases. While the 58.8% allowance rate indicates a rigorous review, the significant impact of verbal communication cannot be overlooked. The 1358-day median to allowance should be factored into the overall strategy, with the understanding that direct dialogue is a primary driver of success. This profile highlights the importance of active engagement in Tech Center 1600.

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

Performance Statistics

58.8%
Allow Rate
-1.2% vs TC avg
590
Total Applications
+50.8%
Interview Lift
1358
Avg Prosecution Days
Based on 551 resolved cases, 2023–2026

Rejection Statute Breakdown

4.6%
§101 Eligibility
13.2%
§102 Novelty
39.7%
§103 Obviousness
25.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18323912 MICROBES WITH REDUCED ADHESION CHARACTERISTICS Final Rejection Wisconsin Alumni Research Foundation
18151935 AIR TO LIQUID MICRO-FLUIDIC CHAMBER Final Rejection Government of the United States as represented by the Secretary of the Air Force
18392380 CELL CULTURE METHOD, CELL CULTURE KIT, AND CELL CULTURE SYSTEM Non-Final OA TOYO SEIKAN GROUP HOLDINGS, LTD.
18871908 COMBINATIONS COMPRISING VITAMIN C AND BIFIDOBACTERIUM ANIMALIS SSP. LACTIS Non-Final OA DSM IP ASSETS B.V.
18871675 VITAMINS FOR USE IN IMPROVING GUT HEALTH Non-Final OA DSM IP ASSETS B.V.
18358437 ENHANCED DETECTION OF BIOFILM-EMBEDDED AND ADHERED PATHOGENS ON CONTAMINATED FOODS OR SURFACES USING ENZYMES Final Rejection UNIVERSITY OF VIRGINIA PATENT FOUNDATION
18569063 CARDIOMYOCYTE SUBTYPES AND METHODS OF MAKING AND USING Non-Final OA University Health Network
18864732 A Mixture of Probiotic Strains to Improve Health and Growth Performance of Ruminants Non-Final OA CHR. HANSEN A/S
17365027 ECONOMIC SUGAR STREAM, PROCESSES AND SYSTEMS OF PRODUCING SAME Non-Final OA POET Research, Inc.
18405956 COMPOUND AND METHOD FOR AN ALLELE-SPECIFIC EDITING OF THE ELANE GENE Final Rejection Eberhard Karls Universität Tübingen Medizinische Fakultät

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