Prosecution Insights
Last updated: October 01, 2026

Examiner: LEVIN, JOEL D

Tech Center 1600 • Art Units: 1600 1633

This examiner grants 58% of resolved cases

Analysis

Joel D. Levin is an examiner in Tech Center 1600 and Art Unit 1600. He has 85 resolved cases, resulting in an allowance rate of 57.6 percent. This 57.6 percent rate indicates a balanced approach to examination, where more than half of the applications reach issuance. For practitioners, this figure suggests that success requires thorough technical arguments. The 85 resolved cases provide a solid foundation for evaluating his prosecution trends in Tech Center 1600.

The interview lift is 36.2 percent, which is a significant factor. This 36.2 percent increase suggests that direct communication is very effective at overcoming rejections in his docket. The median days to allowance is 1543, which is a long timeline of over four years. This 1543-day duration indicates that prosecution with this examiner requires a sustained effort and multiple rounds of response. Practitioners should use the 1543-day figure to manage client expectations and prioritize the 36.2 percent interview lift as a key strategy. The data suggests that while the baseline allowance rate is 57.6 percent, an interview can dramatically improve the odds of a successful outcome.

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

Performance Statistics

58.1%
Allow Rate
-1.9% vs TC avg
100
Total Applications
+35.2%
Interview Lift
1544
Avg Prosecution Days
Based on 86 resolved cases, 2023–2026

Rejection Statute Breakdown

3.9%
§101 Eligibility
13.3%
§102 Novelty
49.9%
§103 Obviousness
27.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17416962 METHOD OF PRODUCING ENTERIC NEURONS AND USES THEREOF Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
16312973 BIO-ELECTRIC NOSE Final Rejection NORTHWESTERN UNIVERSITY
17794735 SERUM-FREE MEDIUM AND CULTURING METHOD SUITED FOR CULTURING BLOOD CELLS SUCH AS HUMAN HEMATOPOIETIC STEM CELLS Non-Final OA The University of Tokyo
17369271 METHODS FOR STIMULATING THE PROLIFERATION AND DIFFERENTIATION OF EUKARYOTIC CELLS Final Rejection PURDUE RESEARCH FOUNDATION
17615382 ADENO-ASSOCIATED VIRUS VECTOR DELIVERY OF CYSTATHIONINE BETA-SYNTHASE (CBS) ENZYME FOR TREATING CBS DEFICIENCY Non-Final OA Cornell University
17776932 METHODS OF CELL SELECTION Final Rejection LONZA LTD
17721003 METHODS OF PERFUSION CULTURING A MAMMALIAN CELL Non-Final OA Genzyme Corporation

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