Prosecution Insights
Last updated: October 26, 2026

Thane E Underdahl, USPTO Patent Examiner

Listed by the USPTO as UNDERDAHL, THANE E

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

This examiner grants 59% of resolved cases

Analysis

UNDERDAHL, THANE E has 553 resolved cases in tech center 1600 and art unit 1651. The allowance rate is 58.8%, and the interview lift is 50.2%. The median time to allowance is 1357 days. The interview figure is substantial relative to the allowance rate, indicating that interview participation is an important feature of this prosecution record. The median also points to a long path to allowance.

The principal company clients are Tohoku University, DSM IP Assets B.V., and Cerbios-Pharma SA. The leading firms are NIXON & VANDERHYE, PC, HOWSON & HOWSON LLP, and WENDEROTH, LIND & PONACK, L.L.P. Applicants handled in this docket may benefit from counsel that can combine technical presentation with sustained prosecution management over the recorded timeline.

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
597
Total Applications
+50.2%
Interview Lift
1357
Avg Prosecution Days
Based on 553 resolved cases, 2023–2026

Rejection Statute Breakdown

4.6%
§101 Eligibility
13.2%
§102 Novelty
40.2%
§103 Obviousness
25.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
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.
18725018 COMPOSITIONS AND METHODS FOR SOLUBILIZING GLYCOSYLTRANSFERASES Non-Final OA CORNELL UNIVERSITY

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Frequently Asked Questions

What is examiner Thane E Underdahl's allowance rate?

58.8% of resolved applications examined by Thane E Underdahl were allowed (553 resolved cases), compared with 31.6% across Art Unit 1651 over the last five years.

Does an interview help with examiner Thane E Underdahl?

This examiner's interview lift is +50.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Thane E Underdahl take to allow a patent?

Applications allowed by Thane E Underdahl took 1,357 days on average from filing to allowance.

Which art unit does examiner Thane E Underdahl work in?

Thane E Underdahl examines applications in Art Unit 1651 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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